CN1177678C

CN1177678C - Fibre board and its mfg. method

Info

Publication number: CN1177678C
Application number: CNB001037315A
Authority: CN
Inventors: 川井秀一; 司; 大西兼司; 三; 奥平有三; 实; 菅原亮; 上田卓实
Original assignee: Matsushita Electric Works Ltd
Current assignee: Panasonic Electric Works Co Ltd
Priority date: 1999-03-03
Filing date: 2000-03-03
Publication date: 2004-12-01
Anticipated expiration: 2020-03-03
Also published as: HK1030187A1; CN1266768A

Abstract

To provide a composite filament board which is lightweight and easy to handle and yet has an outstanding strength, dimensional stability and surface smoothness. This composite filament board 5 is manufactured by combining plural sets of a particle layer 2 consisting of plural pieces of particle 1 obtained by processing an adhesive-dispersed lignocellulose material and a fiber layer 4 consisting of plural pieces of an adhesive-dispersed lignocellulose filament 3 and thermally pressing this combination into a platelike shape. The fiber layer 4 constituted of the lignocellulose filament 3 with 6 mm or more fiber length is laminated on both surfaces of the particle layer 2 composed of the particles 1 with 0.2 or less specific gravity obtained by processing the lignocellulose material. Thus this composite filament board 5 is of a three- layered structure.

Description

Fiberboard and manufacture method thereof

Technical field

The present invention relates to by lignocellulosic the long fibre for example manufacture method of the formed fiberboard of mestha long fibre and fiberboard or the composite fiber plate made from the method.

Background technology

Recently, replace with round log as the glued board of main material as construction material for example floor, wallboard, ceiling, accessory plate such as door-plate, base board, sidewall and furniture material as the wood based panel of a flakeboard and MDF (medium density fibre board (MDF)) class, be widely used in every field.

Flakeboard be with adhesive with through grinding or pulverizing timber and the particles (wood particulate) that obtains mixes or adhesive is administered on this particles, hot pressing then obtains to form tabular.MDF is with adhesive and is lower than 6 millimeters fine fibre by the length that timber obtains and mixes or adhesive is administered on this fine fibre, hot pressing then and obtaining.

By particles and formed flakeboard of timber fine fibre and MDF that various timber, chips, waste wood, defect wood etc. obtain, its advantage is that quality is difficult for variation, lower, the machine-processed good processability of cost, smooth surface etc.

Yet these wood based panels are to be that particle and the wood-fibred of 0.4-0.7 is pressed into tabular formation with proportion; Therefore, the proportion of plate is 0.6-0.9, and (proportion: 0.4-0.6) grade is heavy than glued board.Thus, aspect the easy carrying of plate, produced problem.

Because they by wooden composition for example timber fine fibre and particles constitute, bigger stick portion is arranged between these compositions.Therefore, can not make wooden composition bonding securely each other.The result who causes is that these wood based panel majorities do not have enough big intensity because the insufficient strength of wooden composition self is strong.

Owing to compound wood becomes branch because the suction and the moisture absorption expand, so the overall dimensions of plate changes greatly.So just produced the dimensional stability problem in the plane that is parallel to the plate surface.

Recently, because the global environment problem from the position that conserves forests, has been strengthened the rules of lumbering.Like this, to adopting non-wood raw material plate to increase to some extent with the demand of the wood based panel that replaces traditional chopping wood or hardwood material.

At these demands, developed the plate that adopts non-wood raw material, and concentrated on the material of non-wood lignocellulosic material as this plate, for example bagasse, Chinese sorghum, oil palm, jute, bamboo.

Just use the plate of non-wood raw material, also have some inventions to carry out the research of relevant fiberboard, wherein the length that will obtain from the bast position of mestha (mallow annual plant) reaches about 200 millimeters mestha long fibre as raw material, the direction orientation that long fibre is unidirectional or the edge is perpendicular to one another.The inventor herein has been found that: use the mestha long fibre as material, can make intensity and the dimensional stability plate than conventional wooden plate hight, such patent is implemented (Japanese patent application discloses flat 10-240596 (the flat 10-240596 of Tokugan)).

Yet, be raw-material plate for what have above-mentioned good characteristic with the mestha long fibre, also there is further requirement, promptly performance is better, cost is lower, also requires to improve the manufacture method of plate.

Manufacture method to those inventors have been found that is described as follows:

With in the about 2-6 of diameter centimetre of results, the mestha of highly about 2-4 rice immersion water, make it be divided into bast position and core position, these are used as raw material.To obtain from the bast position wide 1-2 centimetre, thick several millimeters approximately, the mestha bast fibre bundle (long fibre bundle) of long 2-4 rice, cut off along its length, the long fibre bundle of these cut-outs is fed for example opener of fiber opening equipment disorderly, and carry out the fiber opening operation.In this case, if attempt to be about mestha bast fibre bundle (long fibre bundle) the feeding fiber opening device of 2-4 rice, the fiber branch is split or shredding and do not cut off it, be difficult to make the abundant shredding of fiber so, this is with disordered state feeding fiber opening machine because of the long fibre bundle.Therefore, fiber opening is difficult to, unless mestha bast fibre bundle (long fibre bundle) has been cut into suitable length.In other words, when fiber length separately was irregular, the shredding of fiber just became task very consuming time; Therefore, carry out smoothly in order to make the fiber opening operation, mestha bast fibre bundle (long fibre bundle) just needs to cut off along its length.In opener, the mechanism that has a cylinder that band is sold to rotate at a high speed makes the kenaf bundle be divided by the fiber opening operation and splits or shredding; Obtaining length thus and be tens to 200 millimeters, diameter is the mestha long fibre of 0.05-0.6 millimeter.

Here the mestha long fibre that has adhesive that provides forms the long fibre pad with their residing disordered states, and perhaps the mestha long fibre is put into orientation apparatus, and making and forming machine direction is the long fibre pad of unidirectional array.Afterwards, the long fibre pad individually or with the particle lamination that obtains by processing mestha core after, carry out hot pressing, form plate; Thus, high strength, high-dimensional stability, lightweight plate have been made.

Yet, adopt above-mentioned conventional method, when trial further improves performance, when reducing cost, following point can occur by simplified manufacturing technique.

1. be the performance of raw-material plate in order to improve those with long fibre, proposed a kind of method, wherein fiber that will be longer is as the sheet material material.Yet for traditional manufacture method, very difficult processing is not shorter than 200 millimeters long fibre, and for adhesive is provided between fiber equably, splits or the fiber of shredding for treating to divide in advance, also needs a kind of technology so that its length reaches tens to 200 millimeters.

2. when manufacturing has the long stapled plate of orientation, be orientated in order to make through the disordered state long fibre uniaxially of fiber opening operation or along the direction that is perpendicular to one another, need a kind of specific fiber orientation procedure.

3. in traditional manufacture method, just keep the shape of long fibre pad there by the long fibre that has the interlocking.For this reason, be 200 millimeters the formed long fibre pad of kenaf for being about most by length, be difficult to keep its shape, and also be difficult to make continuously mat thus.In other words, the machinability of mat goes wrong, and is difficult to implement to make continuously.

For the problems referred to above 1 and 3, improved specification requirement has been proposed, can not be used as the sheet material material even be not shorter than 200 millimeters mestha long fibre yet.In addition, for the problems referred to above 1 and 2, a kind of new manufacture method of demand, the branch that can simplify traditional fiber opening operation, adhesive greatly spills the operation of operation or fiber orientation.

Summary of the invention

An object of the present invention is to provide in light weight, easy processing, intensity height, dimensional stability height and ganoid fiberboard or composite fiber plate, and the method for the such fiberboard of preparation is provided.

Another object of the present invention be for form fiberboard that the plate shape obtains by hot pressing mestha long fibre and by combination mestha long fibre and mestha particle, then hot pressing forms for the composite fiber plate that the plate shape obtains, and improves the performance of plate; The present invention also provides the method for making fiberboard and composite fiber plate, it can simplify the fiber opening operation greatly, adhesive operation and fiber orientation procedure are provided, and purpose is to improve the machinability of long fibre pad in the mat forming process, and technology can be made continuously.

The present invention relates to by lignocellulosic the long fibre for example manufacture method of the formed fiberboard of mestha long fibre and fiberboard or the composite fiber plate that adopts this method to make.

A first aspect of the present invention relates to the method that a kind of fiber mat that contains adhesive by hot pressing is made fiberboard, and it comprises the steps:

Made the mestha long fibre aggregation with fiber directionality by following steps: the approximate long fibre bundle that obtains from mestha bast position that is arranged in parallel when long fibre Shu Fangxiang applies tension force to fibre bundle, makes fibre bundle carry out shredding; Make the pad that contains mestha long fibre aggregation, then, by with containing the aqueous solution impregnated pads of thermosetting resin adhesive, and adhesive joined in the mestha long fibre pad, in this aqueous solution the content of resin solid be 20% or below; Mestha long fibre pad is carried out drying; Then, the mestha long fibre pad that is added with adhesive is carried out hot pressing.

A second aspect of the present invention relates to a kind of method of making fiberboard by the hot pressing fiber mat.Described fiber mat comprises: comprise the mestha that contains adhesive long stapled mestha long fibre pad and comprise the particle pad of the mestha particle that contains adhesive.This method comprises the steps:

Made the mestha long fibre aggregation with fiber directionality by following steps: the approximate long fibre bundle that obtains from mestha bast position that is arranged in parallel when long fibre Shu Fangxiang applies tension force to fibre bundle, makes fibre bundle carry out shredding; Laminate aggregation, to provide mestha long fibre pad; By with containing the aqueous solution impregnated pads of thermosetting resin adhesive, and adhesive is joined in the mestha long fibre pad, in this aqueous solution the content of resin solid be 20% or below; Then, laminate mestha long fibre pad and mestha particle pad, to provide fiber mat, then, the hot pressing fiber mat.

Description of drawings

Fig. 1 is the view that explanation is used for mestha long fibre bundle of the present invention.

Fig. 2 is the fiber opening state is implemented in explanation by the fiber opening machine a key diagram.

Fig. 3 is the key diagram of the state that sprayed by the adhesive sprinkler of explanation adhesive.

Fig. 4 is that the explanation adhesive spills the key diagram that device divides the state that spills by the adhesive branch.

Fig. 5 is the view that explanation is dispersed with the long stapled coherent condition of mestha of adhesive.

Fig. 6 is the view of explanation mestha long fibre pad.

Fig. 7 is the fibrolaminar view of explanation one-way orientation.

Fig. 8 is the view that explanation mestha long fibre aggregation forms the state of pad.

Fig. 9 is the key diagram of the manufacture method of explanation composite fiber plate.

Figure 10 is the view of explanation composite fiber plate.

Figure 11 is the key diagram of the another kind of manufacture method of explanation composite fiber plate.

Figure 12 is an explanation mestha long fibre Shu Jinhang fiber opening and Xiang Qifen spills adhesive and the view of the method for the formed mestha long fibre pad of reeling.

Figure 13 is the key diagram that another method of composite fiber plate is made in explanation.

Figure 14 is that the part of explanation composite fiber plate is analysed view.

Figure 15 is the key diagram of another method of the manufacture method of explanation composite fiber plate.

Figure 16 is the composite fiber plate sectional drawing that is formed by composite pad, and wherein the mestha particle is scattered in position, the long stapled space of mestha.

Figure 17 is explanation divides the equipment that spills adhesive on the mestha particle a key diagram.

Figure 18 be the explanation composite fiber plate another embodiment view.

Figure 19 is the fibrolaminar view of explanation along the direction orientation that is perpendicular to one another.

Figure 20 is the key diagram of explanation manufacturing along the state of the kenaf pad of both direction orientation.

Figure 21 shows that the mestha long fibre carries out the key diagram that the acupuncture operation makes the embodiment of interlocking to each other.

Figure 22 be wherein the mestha long fibre each other in the view of the kenaf pad of interlocking.

Figure 23 is the view of fiber mat.

Figure 24 is the view of the composite fiber plate in explanation an embodiment of the invention.

Figure 25 (a) is that proportion that explanation compression is used for the present invention is the view of the state of 0.2 particle.

Figure 25 (b) is the key diagram of the state of the traditional woody debris of explanation compression.

Figure 26 is the view of explanation another embodiment of the present invention (example of five-layer structure).

Figure 27 is the view of explanation another embodiment of the invention (example that has the long stapled three-decker of lignocellulosic of one-way orientation).

Figure 28 has the view of analysing part, and another embodiment of the present invention (example that has the long stapled five-layer structure of lignocellulosic of one-way orientation) is described.

Figure 29 is the view of explanation another embodiment of the present invention (example that has the vertical orientated long stapled three-decker of lignocellulosic).

Figure 30 has the view of analysing part, and another embodiment of the present invention (example that has the vertical orientated long stapled five-layer structure of lignocellulosic) is described.

Figure 31 is the view of explanation another embodiment of the present invention (the long stapled example of knitting lignocellulosic).

The specific embodiment

The present invention relates to make by the fiber mat that hot pressing contains adhesive the method for fiberboard, it is characterized in that: the long fibre Shu Jinhang fiber opening by the bast position of mestha obtains provides the mestha long fibre aggregation with fiber directionality; After making the mat that contains mestha long fibre aggregation or before, adhesive is added in the mat; Then hot pressing is added with the mestha long fibre mat of adhesive, adopts the method to make fiberboard or composite fiber plate.

With reference to accompanying drawing, the following describes embodiments of the present invention.

In the present invention, the bast position by mestha obtains the long fibre bundle.

The mestha long fibre bundle 3 that Fig. 1 explanation obtains from mestha bast position.As shown in Figure 1, the width of mestha long fibre bundle 3 is the 10-20 millimeter, and thickness is the 1-5 millimeter, and length reaches the 2000-4000 millimeter.These mestha long fibre bundles 3 are that the mestha elongated fibers 1 of 0.05-0.6 millimeter constitutes by the diameter that forms pencil.

In the manufacture method of fiberboard of the present invention, it is to make 3 shreddings of mestha long fibre bundle by employing fiber opening machine 10 that an operation is arranged, as shown in Figure 2.Fiber opening device 10 shown in Figure 2 is equipped with conveyer, and what for example apply tension force transports roller 10a, when applying tension force, transports mestha long fibre bundle 3 along the direction shown in the arrow among Fig. 2, and the mechanism that the cylinder 10b with many tip pins is rotated at a high speed also is housed.The roller 10a that transports that applies tension force is positioned over before or after the cylinder 10b that is with pin, the mestha long fibre bundle 3 that makes feeding is released by the roller 10a that transports that applies tension force that is positioned at before or after the band pin cylinder 10b, and is transported by the tension force that tension force transports between the roller 10a that applies that puts on before or after the cylinder.

Then, mestha long fibre bundle 3 wide 10-20 millimeter, thick 1-5 millimeter, that be about the 2000-4000 millimeter, along in the direction shown in the arrow feeding fiber opening machine 10 among Fig. 2, as shown in Figure 2, long fibre bundle 3 is arranged in parallel with each other in fact along carriage direction.In fiber opening machine 10, for example apply the long fibre bundle 3 that roller 10a is fed that transports of tension force by conveyer, along being transported under the tension force effect that direction applied of long fibre bundle 3, and separate by the acting on the width of cylinder 10b that has pin of rotation at a high speed.Thus, obtain the mestha long fibre.They are not still upset the orientation of fiber by shredding, so that make many fibre diameters be not more than 0.6 millimeter mestha long fibre 1 shredding by this way: make in fact along same direction orientation.In other words, obtained the mestha long fibre aggregation that relative mestha long fibre has fiber directionality.In the fiber opening operation, the long fibre bundle 3 that obtains from mestha bast position carries out fiber opening and does not upset the orientation of fiber, and when the direction along long fibre bundle 3 applied tension force, long fibre bundle 3 was arranged parallel to each other in fact.Therefore, the aggregation (mestha long fibre aggregation) that many diameters are not more than 0.6 millimeter mestha long fibre 1 is separated, make in fact along same direction orientation, the result who causes is as them, the mestha long fibre bundle 3 that length is about the 2000-4000 millimeter carries out the fiber opening operation by fiber opening machine 10, and do not need to cut off in the longitudinal direction, the mestha long fiber length of formation is not shorter than 200 millimeters.In addition, when carrying out fiber opening owing to mestha long fibre aggregation in the fiber opening operation, arrange along same direction in fact, this becomes possibility with regard to the orientation procedure that makes the specific orientation equipment that saves conventional needs carry out machine direction.

For the fiber opening method, specifically be not subjected to the restriction of said method, can use any method, as long as obtain that long fibre bundle 3 carries out fiber opening and the orientation that do not upset fiber by mestha bast position, and when the direction of long fibre bundle 3 applied tension force, long fibre bundle 3 was arranged in parallel with each other in fact.For example, when tension force was applied to long fibre bundle 3, they can repeatedly pass through the cylinder position.In addition, can carry out preprocessing, wherein mestha long fibre bundle 3 can immerse in the water in advance, makes it to reduce the bonding strength between the single mestha long fibre 1, and can remove the bonding composition of mestha long fibre bundle 3 inside.

The mestha long fibre preferably fully carries out fiber opening.If the fiber opening of fibre bundle is insufficient, adhesive can fully not be added between fiber, and binder fibre, causes the decline of the bonding strength between the fiber in the fiberboard.

In addition, fibre length preferably due to not being shorter than 200 millimeters, more preferably is not shorter than 600 millimeters.The machinability that length is not shorter than 200 millimeters fiber might improve mat and be shaped the time is also improved the performance of fiberboard.

In manufacture method of the present invention, requirement by the operating condition of change equipment, is determined the fiber opening operation long stapled length of mestha afterwards in the fiber opening operation.Though be subjected to the effect length as the mestha long fibre bundle 3 at the bast position of material, fibre length can be controlled in about 200 millimeters-2000 millimeters scope.

The manufacture method of fiberboard of the present invention comprises the operation that adhesive is provided.This provides the operation of adhesive to implement immediately after obtaining the long fibre aggregation.In addition, provide the operation of adhesive also can implement with after forming mat at stacked long fibre aggregation.At first, following explanation is relevant such situation: by obtain the long fibre aggregation, to fiber aggregate adhesive is provided, the step that then forms mat, hot pressing mat with aggregation prepares fiberboard.Provide the operation of adhesive to spill device 11 example explanations by the adhesive branch shown in Fig. 3 and 4.The adhesive branch spills device 11 and mechanism's (not shown) of the aggregation 9 of carrying many mestha long fibres 1 is housed and sprays in aggregation or divide the mechanism of spilling adhesive 12, and wherein mestha long fibre 1 adopts band and roller to get available from the fiber opening operation.In Fig. 3, the adhesive branch spills device 11 and is made of the sprinkler 11a of adhesive 12, and in Fig. 4, the adhesive branch spills device 11 and spills device 11b by the adhesive branch and constitute.As shown in Figure 2, because the fiber opening of mestha long fibre bundle 3 fully also separates the mestha long fibre that is orientated along same direction in fact that forms many length.When the aggregation 9 of mestha long fibre 1 transports along the direction consistent with the differently-oriented directivity of mestha long fibre 1, shown in Fig. 3 and 4, adopt the adhesive branch to spill device 11 and divide herein and spill adhesive 12.Thus, adhesive 12 evenly branch spills in the position, space of the aggregation 9 of mestha long fibre 1, or branch is sprinkled upon on the surface of mestha long fibre 1.

Fig. 5 illustrates the aggregation 9 that branch spills adhesive mestha long fibre 1 afterwards.

For being used for adhesive 12 of the present invention, adhesive can use with liquid form or powder type.Using under the situation of liquid form, adhesive 12 sprays as shown in Figure 3, and under the situation of using powder type, adhesive 12 divides as shown in Figure 4 and spills.

The kind of adhesive 12 is not particularly limited.Usually, their example comprises: urea resin, melamine resin, phenolic resins, resorcinol resin, polyurethane resin, furfural resin, isocyanate resin, they all are thermosetting resins, are cured by heat.

The stacked mestha long fibre aggregation that has adhesive provides mat.In the operation that mat is shaped, the aggregation 9 of mestha long fibre 1 that wherein is dispersed with adhesive 12 is stacked by this way: the machine direction of mestha long fibre 1 be similar to one-way orientation, makes formation mestha long fibre pad 4 as shown in Figure 6.

Afterwards, if desired, mestha long fibre pad 4 tentatively compresses (precompressed), then forms the plate shape through hot pressing process.Obtain to contain the fiberboard 2 of mestha long fibre 1 thus.Fig. 7 has shown an example of the fiberboard 2 that is obtained by the present invention.In Fig. 6 and 7, the differently-oriented directivity of arrow indicating fiber.

In mat forming process of the present invention, the aggregation 9 of the stacked mestha long fibre 1 that is dispersed with adhesive 12 to form the method for mestha long fibre pad 4, is not subject to this especially.For example, illustrate following method.

(1) a kind of method, wherein mestha long fibre aggregation 9 is gone up at length direction (machine direction) and is cut off, and the many of aggregation 9 that length is predetermined are stacked.

(2) a kind of method is wherein made the mestha long fibre bundle 3 at mestha bast position, is not interruptedly spilt after the operation through fiber opening operation and adhesive branch, adopts the aggregation 9 of the stacked formed mestha long fibre 1 of equipment shown in Figure 8.Thus, form mestha long fibre pad 4 continuously.In Fig. 8, the aggregation 9 of mestha long fibre 1 is by cross-level 13 supply when moving back and forth on perpendicular to the B direction of the carriage direction of mestha long fibre pad 4, and the aggregation 9 of Gong Ying mestha long fibre 1 is transported in this way, and formation mestha long fibre pad 4.

In fiber opening operation of the present invention, the aggregation 9 of the mestha long fibre 1 that is obtained by the fiber opening of mestha long fibre bundle 3 is arranged along machine direction, or arranges along their differently-oriented directivity of mestha long fibre 1.

Therefore, in the mat forming process, can use above-mentioned wherein a kind of method, it is possible easily forming the mestha long fibre pad 4 with state of orientation that mestha long fibre 1 kept.

In mat forming process of the present invention, be used for forming mestha long fibre pad 4 owing to will not be shorter than the aggregation 9 of 200 millimeters mestha long fibre 1, strengthened the interlocking between the mestha long fibre 1, make to keep the function of shape of cushion to be strengthened.In other words, the machinability of improving formed mestha long fibre pad 4 is possible, and to form mestha long fibre pad 4 continuously also be possible.Therefore, this method can be produced continuously.

With regard to the compression method of mestha long fibre pad 4 in the hot pressing process of the present invention, can adopt the plate pressure method and the continuous compression method of batch systems; Yet the present invention is not limited.Temperature, time and pressure when determining hot pressing aptly according to the kind of adhesive and desired fiberboard thickness, density and other factors.

Above-mentioned manufacture method can be summarized as follows.

(1) fiber opening operation, wherein the long fibre bundle 3 that obtains from mestha bast position is arranged in rows, and makes and makes long fibre bundle 3 parallel to each other in fact, then, when the direction along long fibre bundle 3 applies tension force, carries out fiber opening, and does not upset the orientation of fiber; Thus, separate many mestha long fibres 1 by this way: make to be orientated along same direction in fact, provide mestha long fibre aggregation with this.

(2) provide the operation of adhesive for mestha long fibre aggregation.

(3) the mat forming process of formation mestha long fibre pad.

(4) mestha long fibre pad 4 is formed the hot pressing process of plate shapes.

In above-mentioned manufacture method, before the operation of preparation mat, implement to provide the operation of adhesive.Provide the operation of adhesive also can after the operation of preparation mat, implement.More specifically, fiberboard can be made by following step:

(1) the approximate row abreast of the long fibre bundle that will obtain from mestha bast position puts;

(2) along fibre bundle vertically with the Shu Jinhang fiber opening, and make many mestha long fibres have almost consistent directionality;

(3) mat for preparing with mestha long fibre through fiber opening;

(4) the long stapled mat of hot pressing mestha is to provide fiberboard.

If desired, the long stapled mat of mestha can and provide enforcement acupuncture operation between the operation (3) of adhesive in the operation (2) of preparation mat, as shown in figure 21.Thus, between the mestha long fibre aggregation or the interlocking intensity between mestha long fibre self become strong.The intensity height of formed fiberboard, excellent size stability, and anisotropy is low.Interlocking between the fiber is strengthened, and has just improved the dimensional stability along thickness direction.

Under the situation of above-mentioned manufacture method, provide the operation of adhesive can be as hereinbefore.In addition, when adhesive provides to mat, require to use the method for spray adhesive solution, in binder solution the method for dipping mat, apply the method for adhesive by roller.From being easy to processing and security consideration, requiring binder solution is the aqueous solution that contains adhesive.Consider especially preferred dipping method from the angle that adhesive evenly is provided between the space of mestha long fibre pad.Below, represent binder solution with the aqueous solution (binder aqueous solution) that contains adhesive.

The preferred adhesive aqueous solution contains the adhesive of 5-20% (weight) (being designated hereinafter simply as " % ") adhesive solids (nonvolatile matter), in the weight of solution.Such binder aqueous solution has higher infiltrated performance to the fiber mat space, can more effectively and equably provide adhesive at short notice, boosts productivity, and reduces cost.

When aerodux is used as adhesive, can provide following effect.

Wherein the solids content of resin is adjusted in the aerodux in the above-mentioned scope, and except the infiltrated performance height to the pad space, it is infiltrated fiber inside in depth.

Therefore, improve the intensity of fiber self, retrained the variation of size on fibre length and diametric(al).As a result, the intensity and the dimensional stability of fiberboard have been strengthened.Especially greatly reduce the change in size on plate thickness direction.

In the operation of adhesive is provided, but can use two or more to the different aqueous solution of the long stapled accessibility of mestha.Thus, it can prevent to provide excessive adhesive in fiber mat inside.Can control infiltrated fiber pad inside adhesive amount and in the amount of carrying out bonding adhesive around the fiber mat surface.As a result, realized the adhesive inside of infiltrated fiber aggregation in depth,, especially improved dimensional stability along thickness direction to improve intensity and dimensional stability.

In addition,, can be reduced to the amount of the necessary adhesive of bonding strength that reaches the fiberboard requirement, the cost of adhesive is descended because adhesive can be provided at fiber surface effectively.

When using two or more to provide adhesive, preferably use aerodux to the different aqueous solution of the long stapled permeable performance of mestha.The permeability of the aqueous solution of aerodux can make it to change by adopting the different phenolic resins of molecular weight.

After the operation of adhesive was provided, particularly, after the dipping operation, preferably mat carried out compression section.Compression section is to exert pressure to mat, mat fully and is equably flooded with binder aqueous solution with required amount, and remove the excess adhesive aqueous solution that is contained in the mat space.Can implement compression section for example by making fiber mat a pair of roller of process under pressure.Compression section can be realized the binder aqueous solution fiber interior space of fill-in pad equably, and makes adhesive arrive fiber surface effectively.As a result, in the fiberboard that forms, fiber is glued together each other securely, has improved the intensity and the dimensional stability of fiberboard.

Mestha long fibre aggregation is provided after the adhesive, can similarly implement compression section.

After the compression section of mat, fiber mat carries out drying, and making moisture is 50% or following (with respect to fibre weight).Unnecessary water can be removed by drying, so that follow-up hot pressing is carried out easily.Though drying means is not limited to specific method, preferably baking temperature is 100 ℃ or following.If baking temperature is too high, the adhesive that is contained in the fiber mat can form gel before hot pressing, and cause such defective: for example bonding strength is not high enough.

After the drying, mat carries out hot pressing process.

Owing to provide these (1)-(4) operation, the present invention to make manufacturing become possibility as raw-material fiberboard with the mestha long fibre that is not shorter than 200 millimeters.Traditional manufacture method only can be used the fiber that is about below 200 millimeters.The operation of adhesive is provided, this operation is dispersed with adhesive in through the aggregation of the mestha long fibre 1 of fiber opening or pad, the aggregation of mestha long fibre 1 and rim strip have many fibre lengths not to be shorter than 200 millimeters, differently-oriented directivity is consistent in fact mestha long fibre, and this operation makes provides adhesive to become possibility as mentioned above easily, equably.As a result, evenly providing of adhesive improved bond properties, and makes with longer fiber and become possibility as fibre board material.Therefore, just might make the improved fiberboard 2 of intensity and dimensional stability.

In addition,, also obtain many advantages in other respects except the performance of fiberboard 2, that is, and aspect manufacturing process.

For example, (1) branch of having simplified fiber opening operation or adhesive spills operation; (2) might easily under the state of orientation that keeps mestha long fibre 1, form mestha long fibre pad 4, thereby remove specific fiber orientation procedure from; (3) owing to strengthened the function that keeps shape of cushion, improved the machinability of mestha long fibre pad 4, and can make mestha long fibre pad 4 continuously.

In other words, compare, simplified manufacturing process greatly, can realize continuous production with classical production process; Thus, reached the purpose that reduces cost.Therefore the manufacture method of fiberboard 2 of the present invention makes higher performance of acquisition and low cost become possibility.

Below, the method for making composite fiber plate is described.

In the manufacture method of composite fiber plate 15 of the present invention, operation except above-mentioned formation long fibre pad, comprise that also inside is dispersed with the mat forming operation of the mestha particle 5 of adhesive, then carry out such operation: wherein the mat 6 of mestha particle 5 and above-mentioned mestha long fibre pad 4 laminate, make to form composite pad 7, also have such operation: wherein composite pad 7 carries out hot pressing.

Fig. 9 has illustrated an embodiment of manufacture method of the present invention.

Fig. 9 has shown such manufacture method: wherein pass through the mestha long fibre pad 4 that aforementioned fibers shredding operation, the operation that adhesive is provided and mat forming operation are obtained, with by adhesive 12 being provided, then implementing the mestha particle pad 6 that the mat forming operation obtains for pulverizing mestha particle 5 that the mestha core obtained, laminate, make it to make composite fiber plate with three-decker.Use the method, might make composite fiber plate 15, as shown in figure 10, the particle layer 15b that will contain the mestha particle is overrided to form with the fibrage 15a that contains mestha long fibre 1.

For by laminating the method for mestha long fibre pad 4 and mestha particle pad 6 formation composite pads 7, have no particular limits.For example, as shown in Figure 9, a kind of like this method has been proposed: wherein laminate mestha particle pad 6 being cut in advance on the mestha long fibre pad 4 of preliminary dimension, on mestha particle pad 6, laminate mestha long fibre pad 4 again.

Usually, have the performance of the composite fiber plate 15 of structure as shown in figure 10, greatly be subjected to the influence of fracture strength or the dimensional stability of fibrage 15a.Composite fiber plate 15 uses that obtained by manufacture method of the present invention form fibrage 15a by long fibre pad 4, fiber mat 4 forms like this: make mestha long fibre Shu Kaisong through the fiber opening operation, form many mestha long fibre aggregations, also passed through operation and mat forming process that adhesive is provided for mestha long fibre aggregation.Therefore, because the mestha long fibre pad 4 that is made of long fibre (promptly not being shorter than 200 millimeters mestha long fibre) is used as fibrage 15a, just might make the composite fiber plate 15 that intensity and dimensional stability are improved.

In addition, in above-mentioned mestha long fibre pad 4, the mestha long fibre that is not shorter than 200 millimeters is interlocked with one another, the interlocked that has strengthened thus between the mestha long fibre is used, the machinability of mestha long fibre pad 4 can be improved, and, can easily form composite pad 7 by adopting method shown in Figure 9.

In addition, can also simplify the fiber opening operation or the operation of adhesive is provided, and might remove specific fiber orientation procedure from.Like this, compare, simplified manufacturing process greatly, and make higher performance of acquisition and lower cost become possibility with classical production process.

Figure 11 has illustrated the manufacture method of the composite fiber plate 15 of another embodiment.In the embodiment of Figure 11, supply continuous mestha long fibre pad 4 and without interruptionly laminate mestha particle pad 6 continuously by the material of adhesive to the mestha particle forms being provided, making.In addition, mestha long fibre pad 4 supplies on the mestha particle pad 6 that is laminated continuously, makes it to make continuously the composite fiber plate 15 with three-decker.

In manufacture method of the present invention, form by laminating the composite pad that mestha long fibre pad 4 and mestha particle pad 6 form continuously, the formed composite pad 7 of hot pressing makes it to make the plate with three-decker as shown in figure 10.

Method for forming continuous mestha long fibre pad 1 is not particularly limited.For example, use equipment as shown in figure 12, make long fibre bundle 3 spill the adhesive operation (because the branch that fiber opening in the fiber opening operation 10 and adhesive branch spill the adhesive 12 in the device 11 spills through fiber opening operations and branch as the mestha bast position of material, identical with above-mentioned explanation, so omit its explanation), and do not interrupt, the result obtains mestha long fibre pad 4, and the orientation of its fiber is parallel to the direction that provides mat continuously.In addition, use equipment as shown in Figure 8, also make the mestha long fibre pad 4 that provides such become possibility, the differently-oriented directivity of its fiber is perpendicular to the direction that provides mat continuously.

The continuous mestha long fibre pad 4 of Huo Deing, coiling as shown in figure 12 like this.

Thus, might be provided at outstanding machinability in the mat processing that forms composite pad.

Figure 13 has illustrated that the manufacturing of another kind of employing similarity method has the method for the composite fiber plate 15 of five-layer structure.Figure 14 has illustrated the plate structure of method acquisition thus.In Figure 14, the differently-oriented directivity of arrow indicating fiber.

The feature of manufacture method shown in Figure 13 is that this method can combine with known flakeboard production line.Usually, as shown in figure 13, use the flakeboard production line of chips to have such operation: the particle pad that wherein forms three-decker with top layer and nexine.

Therefore, using continuous mestha long fibre pad 4 to make it to form the low composite pad of production cost 7 becomes possibility, and can reduce the cost of manufacture process thus greatly.

In the manufacture method shown in Figure 11 of the present invention and 13, be used as fiber mat by the mestha long fibre 1 formed unbroken long fibre pad 4 that is not shorter than 200 millimeters, therefore, just might make intensity and dimensional stability and be able to improved long fibre composite pad 15.

In addition, owing to simplified the fiber opening operation or the operation of adhesive is provided, and owing to can save specific fiber orientation procedure, so compare with conventional fabrication processes, just simplified manufacturing technique greatly owing to can realize continuous production, just might reduce cost.Therefore, the manufacture method of composite fiber plate 15 of the present invention makes and obtains more high-performance and the more low-cost possibility that becomes.

Figure 15 has illustrated another embodiment of manufacture method of the present invention.

In the manufacture method of the composite fiber plate of present embodiment, operation except above-mentioned formation long fibre pad, such operation is also arranged: wherein, form composite pad 8, and wherein composite pad 8 carries out hot pressing by dividing the mestha particle 5 that spills adhesive 12 in the position, space that is dispersed in long fibre pad 4.

Figure 15 has illustrated an example of the manufacture method of present embodiment.

Manufacture method shown in Figure 15 comprises such operation: the mestha particle 5 that wherein branch is spilt adhesive is distributed to and passes through fiber opening as mentioned above, provides on the prepared mestha long fibre pad 4 of the operation of adhesive and formation mat, make the composite pad that is dispersed with mestha particle 5 in the position, space that is formed on mestha long fibre pad 4, also comprise the operation of hot pressing composite pad 8.This method makes manufacturing composite fiber plate as shown in figure 16 become possibility.

Form the method for composite pad 8 for mestha particle 5 is scattered in the position, space of mestha long fibre pad 4, be not subjected to the concrete restriction of said method.Except said method, for example also proposed another kind of method: wherein attempt mestha particle 5 and be scattered in equably in the position, space of mestha long fibre pad 4, mestha particle 5 is scattered in the upper surface of mestha long fibre pad 4, as shown in figure 15, then, composite pad 8 is vibrated.

Composite fiber plate by above-mentioned manufacture method acquisition, have such composite construction: wherein mestha particle 5 is scattered in many positions, space that are not shorter than 200 millimeters mestha long fibre 1, and the mestha long fibre 1 of composite plate 8 inside makes the change in size that improves plate intensity, also reduces in the plate become possibility.Thus, might make the long fibre plate that intensity and dimensional stability are improved.

Owing to simplified the manufacturing process of mestha long fibre pad 4, and, just might reduce cost owing to can realize continuous production.Therefore, the manufacture method of composite fiber plate 15 of the present invention makes and makes high performance composite fiber plate 15 become possibility under low cost.

Constitute the mestha long fibre 1 of composite fiber plate 15 and the weight ratio of mestha particle 5 and be not particularly limited, yet preferably the weight rate with mestha long fibre 1 is decided to be 5-50%, more preferably 10-30%.

The amount that adds the adhesive of mestha long fibre 1 or mestha particle 5 also is not particularly limited, yet, preferably it is decided to be 2-30% (weight), more preferably 8-15% (weight).

Provide the method for adhesive 12 to be not particularly limited to mestha particle 5 of the present invention, for example, shown a kind of method as shown in figure 17.In Figure 17, reference numerals 17 is agitators that its inside has stirring vane 18, and mestha particle 5 is by import 19 feedings that are positioned at an end.Adhesive is by sprinkling position 21 supplies at the top that is positioned at adhesive supply position 20, adhesive supply position 20 place import 19 near, Gong Ying mestha particle 5 and adhesive transport under stirring in mixing with by stirring vane 18 like this, from outlet 22 dischargings, adhesive 12 is scattered in the mestha particle 5.

In yet another embodiment of the present invention, another kind of manufacture method has been proposed, wherein in the operation that forms mestha long fibre pad 4, many mestha long fibre pad 4 fiber orientation directions at them are perpendicular to one another and laminate under the situation, so just formed the mestha long fibre pad 4 of fiber along two direction orientations (being vertical orientated pad) that are perpendicular to one another, then the vertical orientated pad that forms carries out hot pressing separately, make fiberboard 2, or fiber is along the mestha long fibre pad 4 and mestha particle pad 6 formation composite pads 7 of two direction orientations (being vertical orientated pad) that are perpendicular to one another, this composite pad 7 of hot pressing is made composite fiber plate 15.

Method for forming vertical orientated pad is not particularly limited.

For example can propose another kind of method, be that the mestha long fibre pad 4 of Qie Duaning laminated like this after the mestha long fibre pad 4 of one-way orientation was cut into preliminary dimension in machine direction wherein, and their fiber orientation directions is perpendicular to one another.

In addition, the mestha long fibre pad 4 of one-way orientation can laminate, purpose is by adopting method shown in Figure 20, making becomes plumbness each other, can form the mestha long fibre pad 4 of fiber so continuously, i.e. the vertical orientated pad of mestha long fibre 1 along two direction orientations (being vertical orientated pad) that are perpendicular to one another.In Figure 20, mestha long fibre 1 aggregation 9 of one-way orientation transports in the direction of arrow A, when by using cross-level 13 when the B direction moves back and forth, in this direction supply with laminate mestha long fibre 1 aggregation 9 of other one-way orientation, the B direction is perpendicular to the carriage direction of mestha long fibre 1 aggregation 9 that transports along the A direction; Can form the mestha long fibre pad 4 of fiber by they are laminated like this along two direction orientations (being vertical orientated pad) that are perpendicular to one another.

A composite fiber plate 15 that is obtained by above-mentioned manufacture method and an example of fiberboard 2 are shown in Figure 18 and 19.

Figure 18 has illustrated the composite fiber plate 15 that obtains by the composite pad 7 of hot pressing three-decker and mestha particle pad 6, and composite pad 7 contains the fiber that the laminates mestha long fibre pad 4 along two directions orientations that are perpendicular to one another.Figure 19 has illustrated the fiberboard 2 that obtains along the kenaf pad 4 of two directions orientations of being perpendicular to one another by the hot pressing fiber.The differently-oriented directivity of the arrow indicating fiber among Figure 18 and 19.

Then carry out composite fiber plate 15 and the fiberboard 2 that hot pressing obtains by making these vertical orientated pads, adopt mestha long fibre pad 4 the fibrages that contain the mestha long fibre 1 that is not shorter than 200 millimeters as them; Thus, can improve the intensity on the both direction of mestha long fibre 1 orientation, and the anisotropy of their less generation intensity.In addition,, also might on two differently-s oriented directivity, reduce the variation of size, and therefore the anisotropy of change in size be reduced to minimum of a value about dimensional stability.

In manufacture method of the present invention, fiber is used as fibrage along the kenaf pad 4 that two directions that are perpendicular to one another are orientated.Therefore, might be formed in intensity and dimensional stability are improved on the direction that is perpendicular to one another fiberboard 2 and composite fiber plate 15, and reduce anisotropy.

In addition, owing to simplified fiber opening operation and the operation that adhesive is provided, and owing to can reduce or remit specific fiber orientation procedure, compare with conventional fabrication processes, simplified manufacturing technique greatly just, and owing to can realize continuous production, might reduce cost.Therefore, manufacture method of the present invention makes higher performance of acquisition and lower cost become possibility.

In another embodiment of the present invention, the manufacture method of fiberboard 2 and composite fiber plate 15 has been proposed, wherein, in the operation that forms mestha long fibre pad 4, long fibre pad 4 carries out the acupuncture operation, can form the long fibre pad 4 that the interlocking between the mestha long fibre 1 is strengthened, then, the long fibre pad 4 that forms carries out hot pressing separately, or mestha long fibre pad 4 forms composite pad, this composite pad of hot pressing with mestha particle pad 5.

The method of mestha long fibre pad 4 that has the mestha long fibre 1 of interlocking for formation, for example by adopting method shown in Figure 21, the mestha long fibre pad 4 that has the one-way orientation fiber adopts pin 23 to carry out acupuncture processing, as shown in figure 22, can form the mestha long fibre pad 4 that the interlocking between the mestha long fibre 1 is strengthened continuously.

Afterwards, hot pressing mestha long fibre pad 4 provides fiberboard 2 as shown in figure 23.Figure 23 has shown by hot pressing and has had the fiberboard 2 that the mestha long fibre pad 1 of the mestha long fibre 1 of interlocking obtains.

In addition, the composite pad 7 that is made of the mestha long fibre pad 1 and the mestha particle pad 6 of the mestha long fibre 1 that has interlocking carries out hot pressing, can obtain to have in the fibrage composite fiber plate 15 of the mestha long fibre 1 of interlocking.

In these fiberboards 2 and composite fiber plate 15,, can further bring into play the characteristic of mestha long fiber material because the interlocking between the mestha long fibre 1 is strengthened.As a result, might obtain to reduce intensity and dimensional stability anisotropy, improve intensity, reduce the function of change in size.Thus, make that the anisotropy that obtains intensity is less, intensity is high, in the plane on the direction outstanding fiberboard and the composite fiber plate of dimensional stability become possibility.

Manufacture method of the present invention makes utilization contain the long stapled unbroken long fibre pad of the mestha that is not shorter than 200 millimeters becomes possibility as fibrage, and it comprises that formation has the operation of the long stapled pad of interlocking; Thus, intensity or dimensional stability might be improved, and less fiberboard of anisotropy and composite fiber plate might be produced.In addition, owing to simplified the fiber opening operation or the operation of adhesive is provided, and owing to can reduce or remit specific fiber orientation procedure, compare with traditional manufacturing process, just simplified manufacturing technique greatly owing to can realize continuous production, might reduce cost.Thus, manufacture method of the present invention makes higher performance of acquisition and lower cost become possibility.

Composite fiber plate 105 shown in Figure 24 forms like this: will be by the mestha particle 101 formed particle layers 102 that have adhesive (i.e. the layer that is made of many particles 101 that are dispersed with adhesive), with combine by many mestha long fibre 103 formed fibrages 104 that are dispersed with adhesive (i.e. the layer that is constituted by many mestha long fibres 103 that are dispersed with adhesive), apply heat and pressure, purpose is the shape that forms plate, its layer structure is the three-decker that comprises particle layer 102 and fibrage 104, particle layer 102 by proportion be not higher than 0.2 by processing mestha material and the particle 1 that obtains constitutes, fibrage 104 is laminated on two surfaces of particle layer, is made of mestha long fibre 103.

Usually, such part that laminates that is formed by long fibre layer and particle layer depends between particle layer and fibrolaminar intensity and the laminate at the interface bonding strength.When load by on when putting on the structure composite fiber plate shown in Figure 24, the bending strength of plate depends mainly on following three factors:

(1) on the plate surface corresponding to the fracture strength of the surface fiber layer of maximum flexural stress.

(2) in plate corresponding to the anti-shearing fracture strength that acts on the particle layer of the maximum shear stress.

(3) at the interface the intensity of anti-separation between fibrage and particle layer.

The intensity effect that had by interlocking degree and fibre composition between the fiber as the fracture strength of (1) described surface fiber layer.

Consider from the angle that improves aforesaid bending strength, because as long as the length of fiber is at least 6 millimeters, it just might make the fiber interlocking, so except the mestha long fibre, can adopt the various long fibres that obtained by the lignocellulosic long fibre.Because as its main component, the intensity of fiber self is higher with cellulose and lignin for the lignocellulosic long fibre.In other words, because many fibers self are interlockings, the high strength of fiber self just has been reflected on the fibrolaminar intensity well.Specifically, fiber is long more, and the above-mentioned effect that is obtained is effective more.From then on consider, more have reason to understand: it is preferred that fibrage is made of the mestha long fibre aggregation that obtains from said method.

Particularly, contain under the two-layer at least situation at fiberboard, be 200 millimeters of one decks or longer mestha long fibre and one deck mestha particle, more specifically, fiberboard contain two-layer, wherein one deck mestha long fibre laminates under the situation that one deck mestha particle, pad by 2 layers of hot pressing or multilayer form at least, it comprises:

The mestha long fibre pad of making by following steps and contain the pad of mestha particle and adhesive:

The long fibre Shu Jinhang shredding that will obtain from mestha bast position is to provide the mestha long fibre aggregation that fiber has directionality;

Laminate aggregation, to provide mestha long fibre pad;

In pad, add adhesive,

Such fiberboard fracture strength is higher.When mestha long fibre layer is in when topmost forming, the fracture strength of fiberboard can further be improved.And be in when topmost forming when mestha particle layer, can improve surface property, and keep the fracture strength of mestha long fibre layer simultaneously from low-density mestha flakeboard.

For (1) factor in addition, the fracture strength of the anti-shearing stress in the particle layer (2) is influenced by the ratio of defect part, and for example hole can form the starting point of fracture in the particle layer.

Anti-at the interface intensity of separating is influenced by the anti-peeling strength on the particle laminar surface mainly between the lamination (3), and this is because the particle layer is compared with the surface fiber layer, and is more responsive to the material fracture that takes place because of separation.Anti-intensity of separating is influenced by the ratio of defect part in the particle layer also mainly on the surface, and its mode is identical with the fracture strength of anti-shearing stress.

In the above-described embodiment, the particle layer is not higher than 0.2 mestha particle by proportion and forms, and this particle obtains by processing mestha core.As long as material can provide and the fracture strength of the same high anti-shearing stress of mestha particle and the high strength of anti-surface isolation, the particle that is obtained by other ligno-cellulosic materials (being different from the mestha core) also can use.

In other words, the proportion of particle 101 influences the ratio of defect part in the plate that is obtained by molding usually.Figure 25 has illustrated this problem.Figure 25 (a) and 25 (b) are profiles, when wherein each has all illustrated on applying pressure to the different from top to bottom particle of proportion 101 aggregations, up to they being pressed into proportion when not being higher than 0.6 particle layer, the hole state in the particle layer 102.

For example, shown in Figure 25 (b), the proportion that is obtained by process wood is the particle 101 of 0.4-0.7, when formation proportion is not higher than 0.6 plate, because compression ratio is low, the area that particle 101 contacts with each other becomes less, forms such result: defect part for example hole can occur in plate.On the contrary, when using proportion not to be higher than 0.2 particle 101, it is enough big that compression ratio becomes, and shown in Figure 25 (a), even also is like this when the proportion of plate is not higher than 0.6.Therefore, this situation just makes the particle layer be difficult for form the hole that defect part for example can influence the intensity of the fracture strength of anti-shearing stress and anti-surface isolation.

In other words and since the defect part that can cause fracture for example the ratio of hole become less, flakeboard 102 is not easy to take place shear fracture, makes thus to improve the 102 anti-fracture of particle layer and intensity becomes possibility.The particle layer 102 that fracture strength is improved is as near the nexine the plate inner core, shear pressure maximum herein; Thus, this makes raising plate intensity become possibility.

In addition, because the ratio of defect part diminishes in the particle layer 102, the intensity of anti-surface isolation is improved, the result, might stop because the function that improves plate intensity is brought into play in the lamination intensity that separation caused decline at the interface between surface fiber layer 104 and the inner particle layer 102 thus.

For above-mentioned reasons, composite fiber plate 105 of the present invention has three-decker, wherein have: be not higher than the particle layer 102 that 0.2 particle 101 constitutes by proportion, the fibrage 104 that on two surfaces of particle layer 102, laminates, wherein every layer all as superficial layer, constitute by the lignocellulosic long fibre 103 that is not shorter than 6 millimeters.Thus, the fracture strength of the lip-deep fibrage 104 of plate is improved, and the fracture strength of the anti-shearing stress of particle layer 102 and the intensity of anti-surface isolation also are improved in the plate.As a result, make structure as shown in figure 24 composite fiber plate 105 in addition be not higher than at proportion under 0.6 the situation, also show high strength.

For being used for particle 101 of the present invention, although be not particularly limited, as long as use proportion be not higher than 0.2 and also the material that obtains by the processing ligno-cellulosic materials just passable, but its example comprises: for the core of annual plant mestha malvaceous, by pulverizing or milling apparatus light wood and the cotton stem processed of beating crusher and ring-type flaker for example.Has tiny uniform hole by processing particle 101 inside that these ligno-cellulosic materials obtain, so they are very light.For the size and dimension of particle 101 of the present invention, though be not particularly limited, general used thickness is decided to be usually and is not more than 5 millimeters, width and is decided to be the particle 101 that 1-10 millimeter, length are decided to be the 5-20 millimeter.In the composite fiber plate 105 shown in Figure 101, fibrolaminar weight rate preferably is decided to be 5-50%, and more preferably 10-30% in these scopes, might obtain preferable intensity.

Below, with reference to Figure 26, another embodiment of the present invention is described.

Many by making up by particle 101 formed particle layers 102, form composite fiber plate 105 as shown in Figure 3, particle 101 obtains like this: processing has the ligno-cellulosic materials with fibrage 104 of adhesive, fibrage 104 is formed by the lignocellulosic long fibre 103 that has adhesive, apply heat and pressure, make to form the plate shape.It is five layers a layer structure, comprise: by the particle layer 102 that proportion is not higher than 0.2, the particle 101 that obtains by the processing ligno-cellulosic materials is constituted, be laminated on 102 liang of surface of particle layer,, further be laminated on the proportion of going up, obtaining by the processing ligno-cellulosic materials in its two surface and be not higher than the particle layer 2 that 0.2 particle 101 constitutes by the fibrage 4 that the lignocellulosic long fibre 103 that is not shorter than 6 millimeters constitutes.

In this embodiment, because inner particle layer 102 is made of the particle 101 that is not higher than 0.2 by the proportion that obtains of processing ligno-cellulosic materials, the fracture strength of anti-shearing stress is improved with the intensity that anti-lamination separates at the interface, and because the fibrage 104 that is made of the lignocellulosic long fibre 103 that is not shorter than 6 millimeters is positioned over the both sides of the particle layer 102 that is positioned at the center, bending stress increases, as above-mentioned embodiment.Further be laminated on the surface separately of two fibrages 104 by the particle layer 102 that proportion is not higher than 0.2, the particle 101 that obtains by the processing ligno-cellulosic materials is constituted, therefore, owing to be positioned at particle layer 102 on the outermost surface and be and be not higher than 0.2 particle 102 by proportion and make, the plate surface is not easy to produce for example hole of defect part, thereby improves surface flatness.

As a result, though the composite fiber plate 105 with five-layer structure of the present invention is thistle boards, its excellent strength, surface flatness is also excellent.This plate especially be well suited for as except intensity also require design performance good, easily the coating and good internals and the furniture material of decorative effect.

In composite fiber plate as shown in figure 26, fibrolaminar weight rate preferably is decided to be 5-50%, more preferably 10-30%.For the weight rate of the particle layer 102 that constitutes plate outermost layer and internal layer, though be not particularly limited, preferably due to being not less than 5%, the weight rate of internal layer is preferably due to being not less than 40% for the weight rate of each superficial layer.For example, the weight rate of surperficial particle layer fixes on and makes the raising surface flatness become possibility in the above-mentioned scope, and the weight rate of inner particle layer fixes in the above-mentioned scope, and making provides superior strength to become possibility.

Under composite fiber plate 105 situations of the composite fiber plate of 3-tier architecture and 5 layers of structure, use mestha as the material of making composite fiber plate 105, can make plate in light weight, have good intensity and surface flatness.

Mestha is the year living plant in the high mallow family plant, mainly is grown in ground such as China, South Asia, and mestha is used to make rope and cereal bag always usually.In recent years, mestha is as the paper pulp material of non-wood basic paper; Yet, hardly as flakeboard and fibre board material.

Yet, partly be easy to make the lignocellulosic long fibre 103 that length is not less than 6 millimeters (proportion: 0.4-0.7), and can easily make low-gravity particle 101 by the core segment of handling kenaf by the bast of mestha.The tensile strength of the fiber that is partly made by the mestha bast is 2,000-5,000kgf/cm ², an anti-Young's modulus is 70-190 * 10 ³Kgf/cm ²Therefore, compare with the wood-fibred that makes from cork or hardwood, the high 2-14 of its strength ratio wood-fibred doubly.So, use the long fibre that partly makes from its bast, can improve fibrolaminar fracture strength.

The core segment voidage of mestha is not less than 90%, and it is lighter than common timber, is easy to processing, therefore can obtain proportion by broken or grinding and be not more than 0.15 very light particle 101.Use and handle this class low-gravity particle 101 that the mestha core segment obtains, can improve compression ratio.

Owing to this reason, by seldom producing defect part as the space by handling particle layer 102 that low-gravity particle 101 that the mestha core segment obtains forms; Therefore, owing to foregoing reason, can reach the effect of the intensity of the fracture strength that improves anti-shearing stress and anti-surface isolation.

Therefore, these effects have improved the fracture strength of particle layer 102, and the intensity of separating on the anti-stacked interface of fibrage 104, except the fracture strength that improves the long fibre layer 104 that lignocellulosic long fibre that length is not less than 6 millimeters forms, can make the plate that has superior strength and improved surface flatness.

With reference to Figure 24 and Figure 25, they show another embodiment of the invention.

Composite fiber plate 105 of the present invention is composite fiber plates 105 of 3-tier architecture shown in Figure 24, or the composite fiber plate 105 of 5 layers of structure shown in Figure 26.Be characterized in being arranged with fibrage 104.In other words, in this embodiment, in the fibrage 104 that the lignocellulosic long fibre 103 that is not less than 6 millimeters by length forms, lignocellulose fiber 103 is regularly arranged, and its machine direction is an one-way orientation.

The lignocellulosic long fibre has such characteristic, particularly, and at the intensity height of its machine direction; Therefore, when lignocellulosic long fibre 103 according to shown in the embodiment of Figure 27 and Figure 28 when regularly arranged, form fibrage 104 according to its machine direction one-way orientation, improved the fracture strength of fibrage 4 in the differently-oriented directivity of lignocellulosic long fibre 103, the result can make more high-intensity plate.

Lignocellulosic long fibre 103 has such characteristic, when when suction or moisture absorption gas, the tensile strain rate of machine direction is very little, owing to this reason, in Figure 27 and embodiment shown in Figure 28, the change in size of differently-oriented directivity (machine direction of fibrage 104 that the lignocellulosic long fibre 103 of orientation is arranged) can be minimum.

In Figure 27 and composite fiber plate 105 shown in Figure 28, make the effect of the change in size of the whole composite plate of stacked fibrage 104 performance restrictions.Therefore, can make the fiberboard 105 of dimensional stability with superior strength and differently-oriented directivity (machine direction).

In embodiment shown in Figure 28, form on plate surface by proportion and be not more than the particle layer 102 that 0.2 particle makes, can improve surface flatness.

In the composite fiber plate of the present invention, lignocellulosic long fibre 103 should be made as with differently-oriented directivity with the inclination (directionality) of machine direction+and 30 ° to-30 ° ,+20 ° to-20 ° are better.

The long stapled method of orientation lignocellulosic is not particularly limited; Yet, for example use by the present inventor and apply among the No.295090/1998 (Japanese patent application No. (Tokuganhei) 10-295090) manufacturing equipment that is used to be orientated long fiber material that discloses at JP, can easily make the orientation long fiber material, as be orientated long fibre mat and the long fine bundle of orientation, wherein be orientated lignocellulosic long fibre 103.

With reference to Figure 29 and 30, they show another embodiment of the invention.

Composite fiber plate 105 of the present invention is composite fiber plates 105 of 3-tier architecture shown in Figure 24, or the composite fiber plate 105 of 5 layers of structure shown in Figure 26.Be characterized in the form of fibrage 104.In other words, in this embodiment, in the fibrage 104 that is formed by lignocellulosic long fibre 103, lignocellulose fiber 103 is orientated on two mutually orthogonal directions.

Because fibrage 104 is to form according to the mode that lignocellulosic long fibre 103 is orientated on two mutually orthogonal directions, on the both direction of lignocellulosic long fibre 103 orientations, has improved intensity, and can make the intensity anisotropy minimum.For dimensional stability, can also be reduced in the change in size on this both direction, therefore make the anisotropy minimum of change in size.

In the embodiment shown in Figure 30, form on plate surface and to be not more than 0.2 particle 101 by proportion and to form particle layer 102, can improve surface flatness.

With reference to Figure 31, it shows one embodiment of the invention.

Composite fiber plate 105 of the present invention is composite fiber plates 105 of 3-tier architecture shown in Figure 24, is characterized in the form of fibrage 104.In other words, in this embodiment,, can make by knitting (knitting manufacturing) or woven (woven manufacturing) lignocellulosic long fibre 103 by the fibrage 104 that lignocellulosic long fibre 103 forms.

In this method, owing to make fibrage 104, strengthened the interlocking of 103 of long fibres, made the characteristic of the fiber component that lignocellulosic long fibre 103 further is provided by knitting (knitting manufacturing) or woven (woven manufacturing) lignocellulosic long fibre 103.In other words, as previously described, the superior strength of lignocellulosic long fibre 103 display fibers directions, change in size is minimum during suction or during moisture absorption gas.Therefore, brought into play the intensity that improves whole composite fiber plate 105, reduced the effect of its change in size by the fibrage 103 that knitting or woven lignocellulosic long fibre 103 forms.

So, can make the little composite plate 105 of anisotropy of intensity, this plate has high intensity, the excellent size stability of board plane direction.The dimensional stability of in-plane refers to be parallel to the change in size on the plane on plate surface when plate is molded as sheet shape.

Figure 31 has enumerated the composite plate 105 of 3-tier architecture; Yet, also have the plate 105 of 5 layers of structure shown in Figure 26, can form fibrage 104 by knitting (knitting manufacturing) or woven (woven manufacturing) lignocellulosic long fibre 103.In this case, by the mode identical with the front embodiment, fibrage 104 performances that form by knitting or woven lignocellulosic long fibre 103 improve whole fiberboard 105 intensity, and reduce the effect of its change in size, can make the little composite plate 105 of anisotropy of intensity, this plate has high intensity, the excellent size stability of board plane direction.

The composite fiber plate 105 of above-mentioned 3-tier architecture and 5 layers of structure can be according to Fig. 9, Figure 11 and continuous manufacturing shown in Figure 12, or describedly progressively carries out according to following.

The lignocellulosic long fibre mat that the fibre length that adhesive wherein is provided is not less than 6 millimeters is put into frame.In this case, the mat of fibers of using lignocellulosic long fibre one-way orientation wherein or being orientated with orthogonal both direction.Perhaps, use the mat of fibers that makes by knitting or woven lignocellulosic long fibre.

To be not more than 0.2 particle and be dispersed in the fibrage by handling proportion that ligno-cellulosic materials that adhesive wherein is provided obtains, form particle layer (mat), and according to above-mentioned identical mode, in frame, on the particle mat, form fibrage.Make the mat of 3-tier architecture thus, this mat has mat of fibers that the lignocellulosic long fibre that is not less than 6 millimeters forms as the top layer, is not more than particle mat that 0.2 particle forms as internal layer by handling proportion that ligno-cellulosic materials obtains.

To the mat of 5 layers of structure constituting by long fibre mat and particle mat, can make after the same method.

From frame, take out mat then, use hot-press equipment hot pressing, make mat become plate shape, solidify the adhesive in the mat simultaneously; Make composite fiber plate thus.

In this manufacture method, will by the proportion that obtains of processing ligno-cellulosic materials be not more than that 0.2 particle forms layer and fibre length be not less than stacking layer by layer that 6 millimeters lignocellulosic long fibre forms and form mat, hot pressing then; Thereby can improve the bond properties of each interlayer, make it to adopt simple method that the plate with good intensity, dimensional stability and surface flatness is provided, although plate is very light.

Another embodiment of the composite fiber plate 105 of foregoing 3-tier architecture and 5 layers of structure also will be described.

With wherein being provided, the lignocellulosic long fibre mat or the particle mat of adhesive put into frame respectively.In this case, as described above, can one-way orientation or the lignocellulosic long fibre that on orthogonal both direction, is orientated make mat of fibers, or make by knitting or woven lignocellulosic long fibre.

From frame, take out according to top described mat of fibers that makes or particle mat, use hot-press equipment hot pressing then respectively, make mat of fibers or particle mat become tabular, solidify the adhesive in it simultaneously, make respectively by fibre length be not less than layer that 6 millimeters lignocellulosic long fibre forms and by handle that proportion that ligno-cellulosic materials obtains is not more than that 0.2 particle forms layer.

The layer of layer that stack and bonding lignocellulosic long fibre form and particle formation makes the 3-tier architecture shown in Figure 24 and Figure 26-31 that is made of fibrage 104 and particle layer 102 or the composite fiber plate of 5 layers of structure.

In this manufacture method, make the layer that constitutes by fibrage 104 and particle layer 102 respectively.Behind stacked these layers, bonding these layers.Therefore, can accurately control the thickness and the density of each layer, make it to adopt simple method that the plate with good intensity, dimensional stability and surface flatness is provided, although plate is very light.

Embodiment

Example I-1

(loose: 1-2 centimetre, thick: several millimeters, long: the long fine bundle that about 2-4 rice) makes offers fiber opening equipment, and this equipment has the device of the high speed swing roller that pin is arranged shown in Figure 2 by mestha bast part.Being parallel to fiber opening equipment provides the long fine bundle that is partly made by the mestha bast, and can not cut off long fine bundle.Long fine the bundle tightened in the long fibre direction, and branch splits or the long fine bundle of shredding, and do not destroy the orientation of fiber, and therefore, numerous mestha long fibres almost separate on same direction.After the fiber opening process.The long stapled length of mestha separately is about the 0.2-2 millimeter, and diameter is about the 50-600 micron, and is the long stapled aggregates of arranging with same direction of mestha after opening fiber technology.

By spraying equipment shown in Figure 3, in fiber opening technology, make and on the mestha long fibre aggregates of same direction orientation even a kind of adhesive of spraying, therefore make the fibril aggregation material that has wherein disperseed adhesive shown in Figure 5.Use phenolic resins to be adhesive.The adhesive dispersion amount is the adhesive solids in 10% (weight) of fibre weight.

The mestha long fibre superposes in one 300 * 900 millimeters mould with the aggregates that is scattered in adhesive wherein, obtains the mestha long fibre mat (mat) with a direction arrangement shown in Figure 6.Mestha long fibre mat size is 300 * 900 millimeters, and weight per unit area is 0.24 gram per centimeter ²

From mould, take out mestha long fibre mat, between hot plate, handle.Thick 4 millimeters pad rod is arranged in around the mestha long fibre mat.This mat of hot pressing makes the kenaf plate.Hot pressing condition: press temperature: 150 ℃; Pressing pressure: 50kgf/cm ²Press time: 5 minutes.

The fiberboard that makes is shown in Fig. 7, and its size is: 4 millimeters thick, 300 * 900 millimeters, proportion is 0.60.

Example I-2

Make the long stapled aggregates of mestha according to the mode identical by opening fiber with example I-1.With adhesive dispersing apparatus shown in Figure 4, even distribution powder adhesives on aggregates.The adhesive that uses is the phenolic resins powder.The binder powders dispersion amount is 10% of a fibre weight.

The stack of mestha long fibre quadrature obtains orthogonally oriented mestha long fibre mat.This long fibre mat size is 300 * 900 millimeters, and weight per unit area is 0.24 gram per centimeter ²Orthogonally oriented mat (mestha long fibre mat) makes fiberboard according to the mode hot pressing identical with example I-1.

The fiberboard that makes is shown in Figure 19, and its size is: 4 millimeters thick, 300 * 900 millimeters, proportion is 0.61.

Example I-3

Make the long stapled aggregates of mestha according to the mode identical by fiber opening technology and adhesive dispersing technology with example I-1.This aggregates that superposes, making weight per unit area is 0.24 gram per centimeter ², and carry out needle point method shown in Figure 21 and handle, make the long stapled mat of mestha of interlocking shown in Figure 22.This mestha long fibre mat makes fiberboard according to the mode hot pressing identical with example I-1.

The fiberboard that makes is with shown in Figure 23 identical, and its size is: 4 millimeters thick, 300 * 900 millimeters, proportion is 0.60.

Example I-4

Make the long stapled aggregates of mestha according to the mode identical by fiber opening technology and adhesive dispersing technology with example I-1.This aggregates is supplied with equipment shown in Figure 8, make the long stapled mat of mestha of one-way orientation.The mestha long fibre mat that cutting makes, the mat of fibers (the mestha long fibre mat of one-way orientation) of acquisition orientation, its size is 300 * 900 millimeters, weight per unit area is 0.045 gram per centimeter ²

Pulverizing proportion with annular chipper is 0.15 core segment, and making average thickness is 0.5 millimeter, and mean size is 4 * 8 millimeters a mestha particle.With 8% solid of particle weight, on the mestha particle that obtains, spray urea melamine resin.

Carry out the dispersion of adhesive with stirring the blending machine.

When making the combination mattress of fibrage and particle layer, adopt method shown in Figure 9.After the mestha long fibre mat of orientation is put into a mould, coat the mestha particle of the adhesive of dispersion, making mestha particle weight per unit area is 0.36 gram per centimeter ²The mestha long fibre mat of stack orientation makes the three stacked combination mattress that add structure.

From mould, take out this combination mattress, between heating platen, handle.Thick 9 millimeters pad rod is arranged in around this mat.This mat of hot pressing makes mestha long fibre composite plate.Hot pressing condition: press temperature: 150 ℃; Pressing pressure: 50kgf/cm ²Press time: 5 minutes.

The structure of the fiberboard that makes is shown in Figure 10, and its size is: 9 millimeters thick, 300 * 900 millimeters, proportion is 0.51.

Example I-5

The long stapled mat of orientation mestha that makes in the mode identical with example I-4 combines with mestha particle mat, and after making combination mattress shown in following, this combination mattress of hot pressing makes the long stapled composite plate of mestha.The method, adhesive kind and the dispersion amount thereof that adhesive are distributed to mestha long fibre and mestha particle are used identical with example I-4.

According to following described manufacturing compound.

The mestha particle that is dispersed with adhesive is layered in 300 * 900 millimeters the mould, making weight per unit area is 0.045 gram per centimeter ²Stack weight per unit area is 0.045 gram per centimeter on it ²The long stapled mat of orientation mestha.The mestha particle has been layered on the long stapled mat of mestha, and making weight per unit area is 0.027 gram per centimeter ²The weight per unit area that superposes thereon again is 0.045 gram per centimeter ²Orientation mestha long fibre mat.The mestha particle has been layered on the long stapled mat of mestha, making weight per unit area is 0.045 gram per centimeter again ²Make 5 layers compound thus.

From mould, take out this combination mattress, between heating platen, handle.Thick 9 millimeters pad rod is arranged in around this mat.This mat of hot pressing makes mestha long fibre composite plate.Hot pressing condition: press temperature: 150 ℃; Pressing pressure: 50kgf/cm ²Press time: 10 minutes.

The structure of the fiberboard that makes is shown in Figure 14, and its size is: 9 millimeters thick, 300 * 900 millimeters, proportion is 0.49.

Example I-6

According to method shown in Figure 12,, make the long stapled continuous mat of orientation for fiber opening technology and adhesive dispersing technology provide the long fine bundle of mestha bast part continuously.The method, adhesive kind and the dispersion amount thereof that adhesive are distributed to mestha long fibre and mestha particle are used identical with example I-1.The width of mestha long fibre mat is about 300 millimeters.

The continuous mat of mestha long fibre is contained on the laboratory scale flakeboard production line shown in Figure 13, makes 5 layers of combination mattress.This mat of hot pressing obtains the long stapled composite plate of mestha.

Weight per unit area, the hot pressing condition of mestha long fibre mat and mestha particle mat are identical with example I-1.

The fiberboard that makes has structure shown in Figure 14, and its size is: 9 millimeters thick, 300 * 900 millimeters, proportion is 0.52.

Example I-7

Make the long stapled aggregates of mestha according to the mode identical by fiber opening technology and adhesive dispersing technology with example I-1.This aggregates is supplied with equipment shown in Figure 20, make the long stapled mat of orthogonally oriented mestha.The mestha long fibre mat size that makes is 300 * 900 millimeters, and weight per unit area is 0.045 gram per centimeter ²Orthogonally oriented mestha long fibre mat has weight much at one each other on both direction.

Mestha long fibre mat combines with mestha particle mat makes 3 layers of combination mattress.This mat of hot pressing obtains the long stapled composite plate of mestha.

The method, adhesive kind and the dispersion amount thereof that adhesive are distributed to mestha long fibre and mestha particle are used identical with example I-4.

The fiberboard that makes is shown in Figure 14, and its size is: 9 millimeters thick, 300 * 900 millimeters, proportion is 0.50.

Example I-8

Make combination mattress according to the mode identical with example I-5, difference is to use carries out the long stapled mat of mestha that needle point method is handled.This combination mattress of hot pressing obtains the long stapled composite plate of mestha.

When making combination mattress, mestha long fibre weight is with mestha particle weight, method, adhesive kind and the dispersion amount of dispersing binder are identical with example I-5 therein.

Make the long stapled mat of mestha that the needle point method in this embodiment is handled according to the mode identical with example I-3.Fiber is interlocked in the mat.The mat size that makes is 300 * 900 millimeters, and its weight per unit area is 0.045 gram per centimeter ²

The fiberboard size that makes is 9 millimeters thick, and 300 * 900 millimeters, proportion is 0.51.

Example I-9

According to the mode identical with example I-1 manufacturer's area weight in a mould is 0.18 gram per centimeter ²Mestha long fibre mat.Then, will according to and the mestha particle that makes of example I-4 same way as be layered on the mestha long fibre mat, making weight per unit area is 0.27 gram per centimeter ²

Apply vibration in 10 minutes on the mat that forms by particle and long fibre in the mould, use 300 * 900 millimeters piece plate to exert pressure simultaneously, make the mestha particle be dispersed in the space of mestha long fibre mat.Combination mattress according to the mode hot pressing identical with example I-4 gets obtains the long stapled composite plate of mestha.

The plate structure that makes is shown in Figure 16, and its size is: 9 millimeters thick, 300 * 900 millimeters, proportion is 0.50.

Example I-10

The mestha long fibre aggregates that the machine direction that makes according to the mode identical with example I-1 is orientated superposes in 300 * 900 millimeters mould, makes the long stapled mat of mestha of one-way orientation.

This mestha long fibre mat is immersed in the aerodux solution, and this solution solid content is 15%, makes this mat soak into this binder solution.

Afterwards, the mat that soaks into passes through between pair of rolls.Mat was in 100 ℃ of dryings 5 minutes, and the hydration rate that makes mat is 40%.

The mat size that makes is 300 * 900 millimeters, and weight per unit area is 0.24 gram per centimeter ², binder content is 10% (weight).

Mode hot pressing mestha long fibre mat according to identical with example I-1 obtains the kenaf plate.

The fiberboard structure that makes is shown in Fig. 7, and its size is: 4 millimeters thick, 300 * 900 millimeters, proportion is 0.60.

Example I-11

Quadrature stack makes the mestha long fibre mat that orthogonal direction is orientated according to the mestha long fibre aggregates that be orientated in machine direction that the mode identical with example I-1 makes.

This mestha long fibre mat is immersed in the aerodux solution, and this solution solid content is 20%, makes this mat soak into this binder solution.

Afterwards, the mat that soaks into passes through between pair of rolls.Mat was in 100 ℃ of dryings 8 minutes, and the hydration rate that makes mat is 0%.

Mode hot pressing mestha long fibre mat according to identical with example I-10 obtains the kenaf plate.

The fiberboard structure that makes is shown in Figure 19, and its size is: 4 millimeters thick, 300 * 900 millimeters, proportion is 0.61.

Example I-12

Make the mestha long fibre aggregates that is orientated in machine direction according to the mode identical with example I-10.This aggregates that superposes, and it is handled by acupuncture mode shown in Figure 21, make the mestha long fibre mat of interlocking shown in Figure 22.

Viscosity is about 50mPa.s, has the aerodux solution that the aerodux solution that penetrates the fiber high osmosis is about 400mPa.s with viscosity and has a hyposmosis performance and mixes.

Make the kenaf plate according to the mode identical with example I-10, difference is that top mixed phenol urea formaldehyde binder solution is used as aerodux solution.

The resin solid content of this mixed phenol urea formaldehyde binder solution is 15%.

The fiberboard that makes is that class shown in Figure 23, and its size is: 4 millimeters thick, and 300 * 900 millimeters, proportion is 0.60, binder content is 10% (weight).

Example I-13

Make the long stapled aggregates of mestha according to the mode identical by fiber opening technology with example I-1.This aggregates is supplied with equipment shown in Figure 8, make the long stapled mat of mestha of one-way orientation.The mestha long fibre mat that cutting makes, the mat of fibers that obtains being orientated (the mestha long fibre mat of one-way orientation), its size is 300 * 900 millimeters, weight per unit area is 0.045 gram per centimeter ²In the mat that makes according to the mode identical, add adhesive with example I-10.

Carry out the dispersion of adhesive with stirring the blending machine.

When making the combination mattress of fibrage and particle layer, adopt method shown in Figure 9.After the mestha long fibre mat of orientation is put into a mould, spread the mestha particle that has dispersing binder, the weight that makes mestha particle cellar area is 0.36 gram per centimeter ²The long stapled mat of stack orientation mestha makes the three stacked combination mattress that add structure.

From mould, take out this combination mattress, between heating platen, handle.Thick 9 millimeters pad rod is around this mat.This mat of hot pressing makes mestha long fibre composite plate.Hot pressing condition: press temperature: 150 ℃; Pressing pressure: 50kgf/cm ²Press time: 5 minutes.

Example I-14

Combining with mestha particle mat with the long stapled mat of mestha that example I-10 same way as makes, after making combination mattress shown in following, this combination mattress of hot pressing makes the long stapled composite plate of mestha.The method, adhesive kind and the dispersion amount thereof that adhesive are distributed to mestha long fibre and mestha particle are used identical with example I-10.

According to following described manufacturing combination mattress.

The mestha particle that is dispersed with adhesive spread in 300 * 900 millimeters the mould, making weight per unit area is 0.045 gram per centimeter ²Stack weight per unit area is 0.045 gram per centimeter on it ²The long stapled mat of orientation mestha.The mestha particle has been spread on the long stapled mat of mestha, and making its weight per unit area is 0.027 gram per centimeter ²The weight per unit area that superposes thereon again is 0.045 gram per centimeter ²Orientation mestha long fibre mat.The mestha particle is spread on this mat, making weight per unit area is 0.045 gram per centimeter again ²Make 5 layers compound thus.

Comparative Example I-1

(loose: 1-2 centimetre, thick: several millimeters, long: the long fine bundle that about 2-4 rice) makes is cut into 60 millimeters a lot of parts by mestha bast part.The long fine bundle of cutting is supplied with the fiber opening equipment that is called opener with any direction of bundle carry out shredding.Shredding is handled the long stapled average length of back mestha and is about 60 millimeters.

Use the tubular type blending machine of air circulation type, adhesive is disperseed in the superincumbent mestha long fibre.Use aerodux.The adhesive dispersion amount is the adhesive solids in 10% (weight) of fibre weight.

According to the open flat 10-295090 of communique No. of Japan Patent, the mestha long fibre that has applied adhesive offered be used to be orientated long stapled equipment, make the long stapled mat of mestha a direction orientation.

The equipment of orientation fibers has elongated the long fibre that is coated with adhesive, make them continuously by between the pair of rolls that is in stretch section simultaneously, make it on this direction, to be orientated, this equipment transmits long fibre by the conveyer belt that is in crimping segment then, reciprocal mobile a pair of direction each other is opposite, and its direction of while is again perpendicular to the last lower conveyor belt of fiber direction of transfer; Therefore, fiber forms shape of cushion.

Mat according to the mode hot pressing orientation fibers identical with example I-1 makes the kenaf plate.

Comparative Example I-2

Combine with mestha particle mat with the mestha long fibre mat that example I-1 same way as makes, make 5 layers of combination mattress.This combination mattress of mode hot pressing according to identical with example I-5 makes the long stapled composite plate of mestha.

This combination mattress has the structure identical with example I-5.

The plate that makes has structure shown in Figure 14, and its size is: 9 millimeters thick, 300 * 900 millimeters, proportion is 0.51.

Comparative Example I-3

Manual shredding is obtained diameter and is about 2 millimeters by the long fine bundle that the mestha bast partly makes, and is about the mestha long fibre into 0.2-2 rice.

Adhesive be dispersed in according to and the mestha long fibre that makes of example I-1 same way as in.In a mould, form the long fibre mat.Mestha long fibre mat according to the mode hot pressing identical with example I-1 gets obtains fiberboard.

The plate that makes has structure shown in Figure 7, and its size is: 4 millimeters thick, 300 * 900 millimeters, proportion is 0.61.

Example I-1 to example I-14 and Comparative Example I-1 to the method for the manufacturing mat of Comparative Example I-3 listed in table 1.

According to the method for listing among JIS A 5906 (medium-density fiberboard) and the JIS A 5905 (fiberboard), test the physical property of prepared plate.

The tensile strain rate that pilot project has bending strength, yangs flexural modulus, caused by suction.The results are shown in table 2.

To example I-1, I-4, I-5, I-6, I-9, I-10, I-13, I-14 and Comparative Example I-1, I-2, list the result on the fiber orientation directions.

Example I-10 is arrived I-3 to I-14 and Comparative Example I-1, be determined at the water absorption rate of change of thickness direction down.It the results are shown in table 2.

Table 1

Embodiment	Make the method for mat	The method of adhesive is provided for long fibre	Weight per unit area (the gram per centimeter of mat of fibers during moulding ²)	The fiber orientation
Embodiment	Make the method for mat	The method of adhesive is provided for long fibre		The fiber orientation	I-1	Stack long fibre aggregates is made mat	Spraying is dispersed on the long fibre aggregates	0.24	Unidirectional
I-2	Vertical stack long fibre aggregates is made mat	Powder is dispersed on the long fibre aggregates	0.24	Quadrature	I-1	Stack long fibre aggregates is made mat	Spraying is dispersed on the long fibre aggregates	0.24	Unidirectional
I-2	Vertical stack long fibre aggregates is made mat	Powder is dispersed on the long fibre aggregates	0.24	Quadrature	I-3	Needle point method interlocking long fibre aggregates is made mat	Spraying is dispersed on the long fibre aggregates	0.24	Three-dimensional interlocking
I-4	Quadrature stack long fibre aggregates and stacked thereon mestha particle mat are made mat	Spraying is dispersed on the long fibre aggregates	0.045	Unidirectional	I-3		Spraying is dispersed on the long fibre aggregates	0.24	Three-dimensional interlocking
I-4		Spraying is dispersed on the long fibre aggregates	0.045	Unidirectional	I-5	Quadrature stack long fibre aggregates and stacked thereon mestha particle mat are made mat	Spraying is dispersed on the long fibre aggregates	0.045	Unidirectional
I-6	The treatment tube shape long fibre aggregates and the mestha particle mat that superposes are thereon made mat	Spraying is dispersed on the long fibre aggregates	0.045	Unidirectional	I-5		Spraying is dispersed on the long fibre aggregates	0.045	Unidirectional
I-6		Spraying is dispersed on the long fibre aggregates	0.045	Unidirectional	I-7	Quadrature stack long fibre aggregates and stacked thereon mestha particle mat are made mat	Spraying is dispersed on the long fibre aggregates	0.045	Quadrature
I-8	Needle point method interlocking long fibre aggregates is also placed mestha particle mat thereon and is made mat	Spraying is dispersed on the long fibre aggregates	0.045	Three-dimensional interlocking	I-7		Spraying is dispersed on the long fibre aggregates	0.045	Quadrature
I-8		Spraying is dispersed on the long fibre aggregates	0.045	Three-dimensional interlocking	I-9	The mestha particle is dispersed in the long fibre aggregates makes mat	Spraying is dispersed on the long fibre aggregates	0.18	Unidirectional
I-10	Vertical stack long fibre aggregates is made mat	Be immersed in the binder solution after making mat	0.24	Unidirectional	I-9		Spraying is dispersed on the long fibre aggregates	0.18	Unidirectional
I-10	Vertical stack long fibre aggregates is made mat	Be immersed in the binder solution after making mat	0.24	Unidirectional	I-11	Stack long fibre aggregates is made mat	Be immersed in the binder solution after making mat	0.24	Quadrature
I-12	Needle point method interlocking long fibre aggregates is made mat	Be immersed in the binder solution after making mat	0.24	Three-dimensional interlocking	I-11	Stack long fibre aggregates is made mat	Be immersed in the binder solution after making mat	0.24	Quadrature
I-12		Be immersed in the binder solution after making mat	0.24	Three-dimensional interlocking	I-13	Needle point method interlocking long fibre aggregates is also placed mestha particle mat thereon and is made mat	Be immersed in the binder solution after making mat	0.045	Unidirectional
I-14	The mestha particle is dispersed in the long fibre aggregates makes mat	Be immersed in the binder solution after making mat	0.045	Unidirectional	I-13		Be immersed in the binder solution after making mat	0.045	Unidirectional
I-14		Be immersed in the binder solution after making mat	0.045	Unidirectional	Comparative example
I-1	Use the equipment of orientation fibers	Use cast blending machine dispersing binder behind the fiber opening	0.24	Unidirectional	Comparative example
I-1	Use the equipment of orientation fibers		0.24	Unidirectional	I-2	Orientation mat that the fiber orientation apparatus is made and mestha particle mat stacked	Use cast blending machine dispersing binder behind the fiber opening	0.045	Unidirectional
I-3	Do not use fiber opening equipment, the fibril aggregation material of shredding is made mat by hand	Use cast blending machine dispersing binder behind the fiber opening	0.24	Unidirectional	I-2			0.045	Unidirectional

Table 2

Embodiment	Plate	Layer	Fibrage ratio (%)	Plate proportion	Average bending strength (kgf/cm ²)	Average Young bending strength (10kgf/cm ²)	Suction back tensile strain rate
Embodiment	Plate	Layer	Fibrage ratio (%)	Plate proportion	Average bending strength (kgf/cm ²)	Average Young bending strength (10kgf/cm ²)	Suction back tensile strain rate	I-1	The kenaf plate	Individual layer	100	0.60	720	13.2	0.08
I-2	The kenaf plate	Individual layer	100	0.61	600	10.1	0.10	I-1	The kenaf plate	Individual layer	100	0.60	720	13.2	0.08
I-2	The kenaf plate	Individual layer	100	0.61	600	10.1	0.10	I-3	The composite plate of mestha long fibre and particle	Individual layer	100	0.60	620	11.0	0.12
I-4	The composite plate of mestha long fibre and particle	3 layers	20	0.51	510	6.9	0.15	I-3	The composite plate of mestha long fibre and particle	Individual layer	100	0.60	620	11.0	0.12
I-4	The composite plate of mestha long fibre and particle	3 layers	20	0.51	510	6.9	0.15	I-5	The composite plate of mestha long fibre and particle	5 layers	20	0.49	450	4.8	0.17
I-6	The composite plate of mestha long fibre and particle	5 layers	20	0.52	460	4.9	0.16	I-5	The composite plate of mestha long fibre and particle	5 layers	20	0.49	450	4.8	0.17
I-6	The composite plate of mestha long fibre and particle	5 layers	20	0.52	460	4.9	0.16	I-7	The composite plate of mestha long fibre and particle	3 layers	20	0.50	410	4.4	0.17
I-8	The composite plate of mestha long fibre and particle	5 layers	20	0.51	370	4.2	0.19	I-7	The composite plate of mestha long fibre and particle	3 layers	20	0.50	410	4.4	0.17
I-8	The composite plate of mestha long fibre and particle	5 layers	20	0.51	370	4.2	0.19	I-9	The composite plate of mestha long fibre and particle	Individual layer	40	0.50	420	4.5	0.18

Table 2 (continuing)

Embodiment	Plate	Layer	Fibrage ratio (%)	Plate proportion	Average bending strength (kgf/cm ²)	Average Young bending strength (10kgf/cm ²)	Suction back tensile strain rate	Thickness direction suction back tensile strain rate (%)
Embodiment	Plate	Layer	Fibrage ratio (%)	Plate proportion	Average bending strength (kgf/cm ²)	Average Young bending strength (10kgf/cm ²)	Suction back tensile strain rate	Thickness direction suction back tensile strain rate (%)	I-10	The kenaf plate	Individual layer	100	0.60	790	14.5	0.08	7.5
I-11	The kenaf plate	Individual layer	100	0.61	660	11.2	0.10	6.8	I-10	The kenaf plate	Individual layer	100	0.60	790	14.5	0.08	7.5
I-11	The kenaf plate	Individual layer	100	0.61	660	11.2	0.10	6.8	I-12	The kenaf plate	Individual layer	100	0.60	680	12.1	0.12	5.2
I-13	The composite plate of mestha long fibre and particle	3 layers	20	0.51	560	7.6	0.15	5.6	I-12	The kenaf plate	Individual layer	100	0.60	680	12.1	0.12	5.2
I-13	The composite plate of mestha long fibre and particle	3 layers	20	0.51	560	7.6	0.15	5.6	I-14	The composite plate of mestha long fibre and particle	5 layers	20	0.49	500	5.3	0.17	6.2
Comparative example									I-14	The composite plate of mestha long fibre and particle	5 layers	20	0.49	500	5.3	0.17	6.2
Comparative example									I-1	The kenaf plate	Individual layer	100	0.60	650	11.0	0.09	10.6
I-2	The composite plate of mestha long fibre and particle	5 layers	20	0.51	350	4.1	0.18	7.8	I-1	The kenaf plate	Individual layer	100	0.60	650	11.0	0.09	10.6
I-2	The composite plate of mestha long fibre and particle	5 layers	20	0.51	350	4.1	0.18	7.8	I-3	The kenaf plate	Individual layer	100	0.61	280	6.8	0.10	12.1

The kenaf plate of embodiment of the invention I-1 to I-3 and I-10 to I-12 has used fibre length to be not less than 200 millimeters mestha long fibre, compares with Comparative Example I-1 fiberboard that conventional method makes, and this fiber is longer; Therefore, even, improved intensity and dimensional stability in the situation of same proportion.

Even with Comparative Example I-3 relatively because the fibre diameter of the mestha long fibre aggregates of fiber opening is no more than 0.6 millimeter, can affirm that they have improved intensity and dimensional stability.

By embodiment of the invention I-4 to I-9, and the mestha composite fiber plate that example I-13 and the method shown in the I-14 make compares with the Comparative Example I-2 that adopts conventional method to make, and improved intensity and dimensional stability.

The fiberboard that example I-10 to the method shown in the I-14 makes is compared with Comparative Example I-1 to those plates of I-3 that composite fiber plate and employing conventional method make, and except improving intensity and dimensional stability, has also greatly improved the dimensional stability of thickness direction.

Pointed as embodiment I-1 to I-14, the present invention has following feature aspect the method for making fiberboard or composite fiber plate: (1) has been simplified opening fiber technology or the technology of adhesive is provided.(2) can easily make mestha long fibre mat, keep the long stapled state of orientation of mestha simultaneously, therefore can save special fiber orientation process.(3) owing to strengthened the function that keeps shape of cushion, improve the long stapled machinability of mestha, can make mestha long fibre mat continuously.

Compare with the conventional manufacture method that only can treated length mostly be 200 millimeters fiber most, the present invention can use length to be not less than 200 millimeters fiber, and is easy to provide even adhesive.Therefore, as shown in the Examples, can produce the fiberboard or the composite fiber plate that have improved intensity or dimensional stability.

In other words, also might produce continuously, compare, greatly simplify manufacture method, therefore reduce cost with conventional manufacture method owing to improved long stapled machinability.So manufacture method of the present invention can obtain higher performance and lower cost.

Example II-1

By using air stream circulation class pipe type blending machine, spraying and use urea melamine resin based adhesive (its solid-state amount be fibre weight 10%) on the oil palm fiber, this fiber average-size is 200 microns, average length is 6 millimeters.

Making proportion is that 0.15 core segment is handled through annular chipper, and making average thickness is 0.5 millimeter, and mean size is 4 * 8 millimeters a mestha particle.Use rotary drum blending machine, spray application urea melamine resin on the mestha particle that obtains (its solid-state amount be particle weight 8%).

The oil palm fiber that at first 48.6 grams (plate gross weight 10%) has been applied adhesive is put into 300 * 300 millimeters frame and is formed fibrage.The mestha particle that has applied adhesive with 388.8 grams (plate gross weight 80%) forms the particle layer on this fibrage, form fibrage with 48.6 restraining the oil palm fiber that (plate gross weight 10%) applied adhesive on this particle layer again; Therefore make stacked mat.

Take out this stacked mat from frame, place between two hot plates, the mat of 9 millimeters thick is inserted between two hot plates, hot pressing then; Therefore make composite fiber plate shown in Figure 24.

Hot pressing condition: press temperature: 150 ℃; Pressing pressure: 50kgf/cm ²Press time: 10 minutes.

The plate thickness that makes is 9 millimeters, and size is 300 * 300 millimeters, and its proportion is 0.60.

Example II-2

Carry out according to the method identical with example II-1, difference is to use Ba Ersa bombax cotton particle to form the particle layer, thereby makes composite fiber plate.

Among this embodiment, be 0.19 Ba Ersa bombax cotton with the broken proportion of hammer mill, make Ba Ersa bombax cotton particle, the particle average thickness is 1 millimeter, and mean size is 6 * 10 millimeters.

The proportion of the plate that makes is 0.59.

Example II-3

Use has the fiber opening machine of the garden tube whirligig of needle pin, shredding mestha bast fibre bundle, and obtaining average fiber size is 100 microns, average length is 60 millimeters a long fibre.Spray application isocyanates based adhesive on the long fibre that makes (its solid-state for fibre weight 10%).

Making proportion is that 0.15 mestha core segment is handled through annular chipper, and making average thickness is 0.5 millimeter, and mean size is 4 * 8 millimeters a mestha particle.Use rotary drum blending machine, spray application isocyanate adhesive on the mestha particle that obtains (its solid-state amount be particle weight 8%).

Mode according to identical with example II-1 makes stacked mat.This stacked mat has two fibre layers (each 40.5 gram) and one deck particle layer (324.0 gram).

This stacked mat of mode hot pressing according to identical with example II-1 makes fiber composite plate shown in Figure 24.

The plate proportion that makes is 0.52.

Example II-4

Use 300 * 300 millimeters frame, according to and example II-3 same way as carry out, make kenaf, these kenaves (40.5 gram) are used to make mat of fibers.This mat is placed between the hot plate, and 0.9 millimeter pad rod is inserted between the hot plate, and this mat of hot pressing makes fiberboard.

Hot pressing condition: hot pressing temperature: 150 ℃; Hot pressing pressure: 50kgf/cm ²Press time: 3 minutes.

Plate 0.9 millimeters thick that makes, size is 300 * 300 millimeters, its proportion is 0.51.

Use 300 * 300 millimeters frame, according to and example II-3 same way as carry out, make the mestha particle, these mestha particles (324.0 gram) are used to make mat.After placing this mat between the hot plate, 7.2 millimeters pad rod is inserted between the hot plate, and this mat of hot pressing makes the layer parts that the particle layer forms.

Hot pressing condition: hot pressing temperature: 150 ℃; Hot pressing pressure: 50kgf/cm ²Press time: 10 minutes.

Plate 7.2 millimeters thick that make, size is 300 * 300 millimeters, its proportion is 0.49.

For making 3-tier architecture shown in Figure 1, stacked layer parts and the kenaf layer that forms by the mestha particle layer that makes with compacting.Apply urea-melamine adhesive (75 gram per centimeters thereon ²).

Hot pressing condition: hot pressing temperature: 120 ℃; Hot pressing pressure: 10kgf/cm ²Press time: 5 minutes.

Plate 9 millimeters thick that make, size is 300 * 300 millimeters, its proportion is 0.51.

Example II-5

Use fiber orientation apparatus one-way orientation according to and the mestha long fibre that makes of example II-3 same way as, obtain fibrage.

This fibrage size is 300 * 300 millimeters, and weight is 40.5 grams.

The fiber orientation apparatus has been elongated the long fibre that is coated with adhesive, make them continuously by between the pair of rolls that is in stretch section simultaneously, make it on this direction, to be orientated, this equipment transmits long fibre by the conveyer belt that is in crimping segment then, it is opposite reciprocally to move a pair of direction each other, and its direction is again perpendicular to the last lower conveyor belt of fiber direction of transfer simultaneously; Therefore, fiber forms shape of cushion.

Carry out according to the mode identical with example II-3, difference is to use two fibre layers (each 40.5 gram) and one deck particle layer (324.0 gram), makes stacked mat.

Handle this stacked mat according to the mode identical, make the plate shown in the figure II-4 with example II-1.

The plate proportion that makes is 0.50.

Example II-6

Carry out according to the mode identical with example II-5, difference is to use two fibre layers (each 48.6 gram) and one deck particle layer (388.8 gram), to form stacked mat.

The plate proportion that makes is 0.59.

Example II-7

Carry out according to the mode identical with example II-3, difference is that the setting orthogonal direction is that long stapled differently-oriented directivity makes fibrage, thereby obtains stacked mat.

The mat of fibers that the fiber orientation apparatus acquisition of use example II-5 is made of fibrage, its size is made as 300 * 300 millimeters, and weight is 16.2 grams.This stacked mat is made of two fibre layers (each 32.4 gram) and one deck particle layer (259.2 gram), and making plate proportion is 0.40.

Handle this stacked mat according to the mode identical, make the plate shown in the figure II-6 with example II-1.

The plate proportion that makes is 0.40.

Example II-8

Carry out according to the mode identical with example II-7, difference is to use two fibre layers (each 40.5 gram) and one deck particle layer (324.0 gram), to form stacked mat.

Handle this stacked mat according to the mode identical, make plate shown in Figure 29 with example II-1.

The plate proportion that makes is 0.51.

Example II-9

Carry out according to the mode identical with example II-3, difference be the mestha textile raw material that makes by woven kenaf as fibrage, thereby obtain stacked mat.

This stacked mat is made of two fibre layers (each 40.5 gram) and one deck particle layer (324.0 gram).

Handle this stacked mat according to the mode identical, make plate shown in Figure 31 with example II-1.

The plate proportion that makes is 0.52.

Example II-10

Carry out according to the mode identical with example II-9, difference is to use two fibre layers (each 48.6 gram) and one deck particle layer (388.2 gram), thereby obtains stacked mat.

Handle this stacked mat according to the mode identical, make 3 laminates shown in Figure 31 with example II-1.

The plate proportion that makes is 0.59.

Example II-11

Carry out according to example II-5, to make the stacked mat that the fibrage ratio is 6% (weight).

To kenaf, using average fiber size is 100 microns, and average length is 100 millimeters a fiber, and stacked mat is made of two fibre layers (each 12.2 gram) and one deck particle layer (380.7 gram).

Should handle this stacked mat according to the mode identical, make plate shown in Figure 27 with example II-1.

The plate proportion that makes is 0.50.

Example II-12

Carry out according to the mode identical, to make the stacked mat that the fibrage ratio is 20% (weight) with example II-11.

Handle this stacked mat according to the mode identical, make plate shown in Figure 27 with example II-1.

The plate proportion that makes is 0.51.

Example II-13

The use average fiber length is 100 millimeters a fiber, makes stacked mat according to the mode identical with example II-8.

The plate proportion that makes is 0.52.

Example II-14

Carry out according to the mode identical, to make the stacked mat that the fibrage ratio is 30% (weight) with example II-13.

Stacked mat is made of two fibre layers (each 60.8 gram) and one deck particle layer (283.5 gram).

The plate proportion that makes is 0.51.

Example II-15

Use Ba Ersa bombax cotton particle as the particle layer, make stacked mat according to the mode identical with example II-14.

Apply the isocyanates based adhesive on Ba Ersa bombax cotton particle, its amount is 8% (weight) of solid matter.

The plate proportion that makes is 0.50.

Example II-16

Carry out according to the mode identical, to make the stacked mat that the fibrage ratio is 30% (weight) with example II-1.

Stacked mat is made of two fibre layers (each 72.9 gram) and one deck particle layer (340.2 gram).

Handle this stacked mat according to the mode identical, make plate shown in Figure 24 with example II-1.

The plate proportion that makes is 0.59.

Example II-17

The use average fiber length is 200 millimeters a kenaf, makes stacked mat according to the mode identical with example II-14.

The plate proportion that makes is 0.51.

Example II-18

At first with 40.5 grams (plate gross weight 10%) according to and the mestha particle that makes of example II-3 same way as put into 300 * 300 millimeters frame, make the particle layer.On this particle layer, form 12.2 grams (plate gross weight 3%) according to and the orientation fibers mat that makes of example II-5 same way as, form fibrage.Use 299.7 grams (plate gross weight 74%) mestha particle, on this fibrage, form the particle layer again.With 12.2 gram (plate gross weight 3%) orientation fibers mats, on this particle layer, form fibrage again.With 40.5 gram (plate gross weight 10%) mestha particles, on this fibrage, form the particle layer once more; Make stacked mat thus.

Take out this stacked mat and put between the hot plate from frame, 9 millimeters are filled up rods and are inserted between hot plate this mat of hot pressing; Therefore make the composite fiber plate of 5 layers of structure shown in Figure 28.

The plate proportion that makes is 0.51.

Example II-19

Carry out according to the mode identical, to make the stacked mat that the fibrage ratio is 20% (weight) with example II-18.

Stacked mat is made of two fibre layers (each 40.5 gram) and one deck particle layer (243.0 gram).

The plate proportion that makes is 0.52.

Example II-20

Carry out according to the mode identical with example II-19, difference is that the fibrage that makes makes orthogonally oriented long fibre direction, thereby makes stacked mat.

Owing to this reason, stacked mat is made of two fibre layers (each 40.5 gram) and one deck particle layer (243.0 gram).

Take out this stacked mat and put between the hot plate from frame, 9 millimeters are filled up rods and are inserted between hot plate this mat of hot pressing; Therefore make the composite fiber plate of 5 layers of structure shown in Figure 30.

The plate proportion that makes is 0.50.

Comparative Example I I-1

Proportion is that the thick wood chip of 0.60 cork is handled through annular chipper, makes mean size and be 6 * 10 millimeters cork particle.Spray application isocyanates based adhesive on the cork particle that obtains (it is solid-state be particle weight 8%).

The cork particle that 405.0 grams has been applied adhesive is put into 300 * 300 millimeters frame formation particle mat.

This mat is placed between two hot plates, be inserted between two hot plates hot pressing then with the pad rod of 9 millimeters thick; Therefore make the cork flakeboard.

The plate thickness that makes is 9 millimeters, and size is 300 * 300 millimeters, and its proportion is 0.52.

Comparative Example I I-2

Proportion is that the thick wood chip of 0.60 cork is handled through refiner, and obtaining the fiber average-size is 50 microns, and average length is 3 millimeters a cork fibrous.Use the air flow tube formula blending machine of circular form, spray application isocyanates based adhesive (it is solid-state to be 10% with respect to particle weight) on the cork fibrous that obtains.

Make cork fibrous plate (MDF) according to the mode identical with Comparative Example I I-1.

The plate thickness that makes is 9 millimeters, and size is 300 * 300 millimeters, and its proportion is 0.50.

Comparative Example I I-3

Carry out according to the mode identical with Comparative Example I I-1, difference is to use the mestha particle that makes in the example II-3 as particle, thus the plate that acquisition is formed by mestha particle layer parts.

The plate thickness that makes is 9 millimeters, and size is 300 * 300 millimeters, and its proportion is 0.51.

Comparative Example I I-4

Carry out according to the mode identical with Comparative Example I I-1, difference is to use Ba Ersa bombax cotton particle as particle, thus the plate that acquisition is formed by Ba Ersa bombax cotton particle layer parts.

Comparative Example I I-5

Carry out according to the mode identical with Comparative Example I I-3, difference is to use the cork particle as particle, thereby obtains stacked mat.

This mat is placed between the hot plate, and the pad rod is inserted between the hot plate hot pressing then; Therefore make the plate of 3-tier architecture shown in Figure 24.

The plate proportion that makes is 0.50.

Comparative Example I I-6

Carry out according to the mode identical with example II-3, difference is to use the cork particle as particle, obtains stacked mat.

The plate proportion that makes is 0.50.

Comparative Example I I-7

Carry out according to the mode identical with example II-4, difference is to use the cork fibrous plate as fibrage, and is stacked as fibrolaminar cork fibrous plate with by the layer parts that the mestha particle forms, and makes them bonding mutually.

The layer component thickness that is formed by mestha particle layer is 7.2 millimeters, and plate proportion is 0.51, with Comparative Example I I-3 make identical, the cork fibrous plate thickness is 0.9 millimeter, proportion is 0.50, with Comparative Example I I-2 make identical.

The plate proportion that makes is 0.51.

Comparative Example I I-8

Carry out according to the mode identical with example II-19, difference is to use the cork particle as particle, obtains stacked mat.

Should place between the hot plate by stacked mat, the pad rod is inserted between the hot plate hot pressing then; Therefore make the plate of 3-tier architecture shown in Figure 28.

The plate proportion that makes is 0.49.

Comparative Example I I-9

Carry out according to the mode identical with example II-20, difference is to use the cork particle as particle, obtains stacked mat.

This mat is placed between the hot plate, and the pad rod is inserted between the hot plate hot pressing then; Therefore make the plate of 3-tier architecture shown in Figure 28.

The plate proportion that makes is 0.50.

* Xia Mian table 3 and table 4 have been listed manufacture method, plate structure and the plate proportion of example II-1 to II-20 and Comparative Example I I-1 to II-9.

* adopt the physical property of the standardized method test of JIS A 5906 (medium-density fiberboard) and JIS A 5905 (fiberboard) by the plate that makes among the foregoing description II-1 to II-20 and the Comparative Example I I-1 to II-9.Pilot project comprises tensile strain rate after bending strength, yangs flexural modulus, the suction, and table 5 has been listed the result of these tests.

Shown in embodiment II-1 to II-17, among the present invention, can be according to each structure shown in Figure 24 and Figure 26-31, the stacked length that is obtained by ligno-cellulosic materials is not less than 6 millimeters lignocellulosic long fibre and proportion and is not more than 0.2 particle.Therefore, can utilize the long stapled excellent characteristic of lignocellulosic.Can improve the fracture strength of seeing shear stress, and between the layer laminate interface of fibrage and particle layer, resist the intensity of separating; Therefore, compare, under same proportion, can further improve strength characteristics with the lamina of Comparative Example I I-1 to II-4.

Shown in embodiment II-5, II-6, II-11 and II-12, by one-way orientation mestha long fibre, compare with the situation that does not have orientation, improved the strength characteristics on the fiber orientation directions.

Dimensional stability during to suction can obtain higher dimensional stability in fiber orientation directions; Therefore, compare, greatly improved dimensional stability with the composite plate that does not have the fiber orientation.

Example II-5, II-6, II-11 and II-12 and Comparative Example I I-6 are to having provided the result of the test at fiber orientation directions.

Shown in embodiment II-7, II-8, II-13, II-14, II-15 and II-17, compare with the fiber of one-way orientation, by orthogonally oriented mestha long fibre, can improve the characteristic of intensity and dimensional stability, and not have the anisotropy of intensity.

Shown in embodiment II-9 and II-10, use woven mestha fabric and can obtain high strength, there is not anisotropy, can also guarantee the excellent size stability of the in-plane of plate.

Compare with the composite plate of the cork of use shown in Comparative Example I I-5, II-6, II-8 and II-9 particle, the composite plate of example II-3, II-5, II-19 and II-20 uses proportion to be not more than 0.2 mestha particle, can reduce and make the defect part in the particle layer behind the plate, therefore improve the fracture strength of anti-shearing stress and the intensity of anti-layer laminate interfacial separation; So, under same proportion, improved strength characteristics.

Estimated and made its smoothness of the surface behind the plate, table 5 has been listed these results.

In this evaluation method, statistics is present in that to be cut into the length of side be 5 centimetres square (surface area: 25 centimetres ²) a surface of plate on diameter be not less than the quantity in 0.5 millimeter space, space quantity is as the index of surface smoothness.Evaluation criterion below adopting: ◎: do not have; Zero: less than 3; △:＜3-＜10; *: be not less than 10.

Compare with example II-8 and II-9, example II-18, II-19 and II-20 use high-intensity mestha long fibre and mestha particle, are improving intensity under same proportion.

Manufacturing by the mestha particle form the layer superficial layer, compare with other material, improved surface flatness.

Table 3

Embodiment	Forming method	Plate structure										Plate proportion
		Plate structure											Layer	Fibrage					The particle layer
		Material	Fibre length (millimeter)	Fiber condition	Ratio (weight %)	Mat weight (gram)	Material	Proportion	Ratio (weight %)	Mat weight (gram)				Fibrage					The particle layer
		Material	Fibre length (millimeter)	Fiber condition	Ratio (weight %)	Mat weight (gram)	Material	Proportion	Ratio (weight %)	Mat weight (gram)	II-1			Global formation	3-tier architecture	The oil palm fiber	8	Non-oriented	20	97.2	The mestha particle	0.15	80	388.8	0.60
II-2	Global formation	3-tier architecture	The oil palm fiber	6	Non-oriented	20	97.2	Ba Ersa bombax cotton particle	0.19	80	II-1	388.8	0.59	Global formation	3-tier architecture	The oil palm fiber	8	Non-oriented	20	97.2	The mestha particle	0.15	80	388.8	0.60
II-2	Global formation	3-tier architecture	The oil palm fiber	6	Non-oriented	20	97.2	Ba Ersa bombax cotton particle	0.19	80	II-3	388.8	0.59	Global formation	3-tier architecture	The mestha bast fiber	60	Non-oriented	20	81.0	The mestha particle	0.15	80	324.0	0.52
II-4	Stacked moulding	3-tier architecture	The mestha bast fiber	60	Non-oriented	20	81.0	The mestha particle	0.15	80	II-3	324.0	0.51	Global formation	3-tier architecture	The mestha bast fiber	60	Non-oriented	20	81.0	The mestha particle	0.15	80	324.0	0.52
II-4	Stacked moulding	3-tier architecture	The mestha bast fiber	60	Non-oriented	20	81.0	The mestha particle	0.15	80	II-5	324.0	0.51	Global formation	3-tier architecture	The mestha bast fiber	60	Unidirectional	20	81.0	The mestha particle	0.15	80	324.0	0.50
II-6	Global formation	3-tier architecture	The mestha bast fiber	60	Unidirectional	20	97.2	The mestha particle	0.15	80	II-5	388.8	0.59	Global formation	3-tier architecture	The mestha bast fiber	60	Unidirectional	20	81.0	The mestha particle	0.15	80	324.0	0.50
II-6	Global formation	3-tier architecture	The mestha bast fiber	60	Unidirectional	20	97.2	The mestha particle	0.15	80	II-7	388.8	0.59	Global formation	3-tier architecture	The mestha bast fiber	60	Quadrature	20	64.8	The mestha particle	0.15	80	259.2	0.40
II-8	Global formation	3-tier architecture	The mestha bast fiber	60	Quadrature	20	81.0	The mestha particle	0.15	80	II-7	324.0	0.51	Global formation	3-tier architecture	The mestha bast fiber	60	Quadrature	20	64.8	The mestha particle	0.15	80	259.2	0.40
II-8	Global formation	3-tier architecture	The mestha bast fiber	60	Quadrature	20	81.0	The mestha particle	0.15	80	II-9	324.0	0.51	Global formation	3-tier architecture	The mestha fabric	-	Knitting	20	81.0	The mestha particle	0.15	80	324.0	0.52
II-10	Global formation	3-tier architecture	The mestha fabric	-	Knitting	20	97.2	The mestha particle	0.15	80	II-9	388.8	0.59	Global formation	3-tier architecture	The mestha fabric	-	Knitting	20	81.0	The mestha particle	0.15	80	324.0	0.52
II-10	Global formation	3-tier architecture	The mestha fabric	-	Knitting	20	97.2	The mestha particle	0.15	80	II-11	388.8	0.59	Global formation	3-tier architecture	The mestha bast fiber	100	Unidirectional	6	24.3	The mestha particle	0.15	94	380.7	0.50
II-12	Global formation	3-tier architecture	The mestha bast fiber	100	Unidirectional	20	81.0	The mestha particle	0.15	80	II-11	324.0	0.51	Global formation	3-tier architecture	The mestha bast fiber	100	Unidirectional	6	24.3	The mestha particle	0.15	94	380.7	0.50
II-12	Global formation	3-tier architecture	The mestha bast fiber	100	Unidirectional	20	81.0	The mestha particle	0.15	80	II-13	324.0	0.51	Global formation	3-tier architecture	The mestha bast fiber	100	Quadrature	20	81.0	The mestha particle	0.15	80	324.0	0.52
II-14	Global formation	3-tier architecture	The mestha bast fiber	100	Quadrature	30	121.5	The mestha particle	0.15	70	II-13	283.5	0.51	Global formation	3-tier architecture	The mestha bast fiber	100	Quadrature	20	81.0	The mestha particle	0.15	80	324.0	0.52
II-14	Global formation	3-tier architecture	The mestha bast fiber	100	Quadrature	30	121.5	The mestha particle	0.15	70	II-15	283.5	0.51	Global formation	3-tier architecture	The mestha bast fiber	100	Quadrature	30	121.5	Ba Ersa bombax cotton particle	0.19	70	283.6	0.50
II-16	Global formation	3-tier architecture	The oil palm fiber	8	Non-oriented	30	145.8	The mestha particle	0.15	70	II-15	340.2	0.59	Global formation	3-tier architecture	The mestha bast fiber	100	Quadrature	30	121.5	Ba Ersa bombax cotton particle	0.19	70	283.6	0.50
II-16	Global formation	3-tier architecture	The oil palm fiber	8	Non-oriented	30	145.8	The mestha particle	0.15	70	II-17	340.2	0.59	Global formation	3-tier architecture	The mestha bast fiber	200	Quadrature	30	121.5	The mestha particle	0.15	70	283.5	0.51
Comparative example											II-17			Global formation	3-tier architecture	The mestha bast fiber	200	Quadrature	30	121.5	The mestha particle	0.15	70	283.5	0.51
Comparative example											II-1			Global formation	Single layer structure	-	-	-	-	-	The cork particle	0.60	100	405.0	0.52
II-2	Global formation	Single layer structure	Cork fibrous	2	Non-oriented	100	405.0	-	-	-	II-1	-	0.50	Global formation	Single layer structure	-	-	-	-	-	The cork particle	0.60	100	405.0	0.52
II-2	Global formation	Single layer structure	Cork fibrous	2	Non-oriented	100	405.0	-	-	-	II-3	-	0.50	Global formation	Single layer structure	-	-	-	-	-	The mestha particle	0.15	100	405.0	0.51
II-4	Global formation	Single layer structure	-	-	-	-	-	Ba Ersa bombax cotton particle	0.19	100	II-3	405.0	0.62	Global formation	Single layer structure	-	-	-	-	-	The mestha particle	0.15	100	405.0	0.51
II-4	Global formation	Single layer structure	-	-	-	-	-	Ba Ersa bombax cotton particle	0.19	100	II-5	405.0	0.62	Global formation	3-tier architecture	The mestha bast fiber	60	Non-oriented	20	81.0	The cork particle	0.60	80	324.0	0.50
II-6	Global formation	3-tier architecture	The mestha bast fiber	60	Unidirectional	20	81.0	The cork particle	0.60	80	II-5	324.0	0.50	Global formation	3-tier architecture	The mestha bast fiber	60	Non-oriented	20	81.0	The cork particle	0.60	80	324.0	0.50
II-6	Global formation	3-tier architecture	The mestha bast fiber	60	Unidirectional	20	81.0	The cork particle	0.60	80	II-7	324.0	0.50	Stacked moulding	3-tier architecture	Cork fibrous	2	Non-oriented	20	81.0	The mestha particle	0.15	80	324.0	0.51

Table 4

Embodiment	Forming method	Plate structure										Plate proportion
		Plate structure											Layer	Fibrage					The particle layer
		Material	Fibre length (millimeter)	Fiber condition	Ratio (weight %)	Mat weight (gram)	Material	Proportion	Ratio (weight %)	Mat weight (gram)				Fibrage					The particle layer
		Material	Fibre length (millimeter)	Fiber condition	Ratio (weight %)	Mat weight (gram)	Material	Proportion	Ratio (weight %)	Mat weight (gram)	II-18			Global formation	5 layers of structure	The mestha bast fiber	60	Unidirectional	6	24.3	The mestha particle	0.15	94	380.7	0.51
II-19	Global formation	5 layers of structure	The mestha bast fiber	60	Unidirectional	20	81.0	The mestha particle	0.19	80	II-18	324.0	0.52	Global formation	5 layers of structure	The mestha bast fiber	60	Unidirectional	6	24.3	The mestha particle	0.15	94	380.7	0.51
II-19	Global formation	5 layers of structure	The mestha bast fiber	60	Unidirectional	20	81.0	The mestha particle	0.19	80	II-20	324.0	0.52	Global formation	5 layers of structure	The mestha bast fiber	60	Quadrature	20	81.0	The mestha particle	0.15	80	324.0	0.52
Comparative example											II-20			Global formation	5 layers of structure	The mestha bast fiber	60	Quadrature	20	81.0	The mestha particle	0.15	80	324.0	0.52
Comparative example											II-8			Global formation	5 layers of structure	The mestha bast fiber	60	Unidirectional	20	81.0	The cork particle	0.15	80	324.0	0.49
II-9	Global formation	5 layers of structure	The mestha bast fiber	60	Quadrature	20	81.0	The cork particle	0.15	80	II-8	324.0	0.50	Global formation	5 layers of structure	The mestha bast fiber	60	Unidirectional	20	81.0	The cork particle	0.15	80	324.0	0.49

Table 5

	Plate proportion	Average bending strength (kgf/cm ²)	Average yangs flexural modulus (10 ⁴kgf/cm ²)	Suction is length direction rate of change (%) down	Surface flatness
	Plate proportion	Average bending strength (kgf/cm ²)	Average yangs flexural modulus (10 ⁴kgf/cm ²)	Suction is length direction rate of change (%) down	Surface flatness	Example II-1	0.60	380	2.7	0.33	○
Example II-2	0.59	300	2.4	0.32	○	Example II-1	0.60	380	2.7	0.33	○
Example II-2	0.59	300	2.4	0.32	○	Example II-3	0.52	390	4.4	0.25	○
Example II-4	0.51	380	4.2	0.24	○	Example II-3	0.52	390	4.4	0.25	○
Example II-4	0.51	380	4.2	0.24	○	Example II-5	0.50	490	6.6	0.16	○
Example II-6	0.59	730	8.8	0.17	○	Example II-5	0.50	490	6.6	0.16	○
Example II-6	0.59	730	8.8	0.17	○	Example II-7	0.40	300	3.8	0.18	○
Example II-8	0.51	420	5.0	0.17	○	Example II-7	0.40	300	3.8	0.18	○
Example II-8	0.51	420	5.0	0.17	○	Example II-9	0.52	440	5.2	0.17	○
Example II-10	0.59	400	2.8	0.35	○	Example II-9	0.52	440	5.2	0.17	○
Example II-10	0.59	400	2.8	0.35	○	Example II-11	0.50	350	2.4	0.30	○
Example II-12	0.51	510	7.0	0.15	○	Example II-11	0.50	350	2.4	0.30	○
Example II-12	0.51	510	7.0	0.15	○	Example II-13	0.52	440	6.0	0.17	○
Example II-14	0.51	490	7.0	0.13	○	Example II-13	0.52	440	6.0	0.17	○
Example II-14	0.51	490	7.0	0.13	○	Example II-15	0.50	400	4.9	0.14	○
Example II-16	0.59	410	2.9	0.36	○	Example II-15	0.50	400	4.9	0.14	○
Example II-16	0.59	410	2.9	0.36	○	Example II-17	0.51	550	7.5	0.12	○
Example II-18	0.51	260	2.2	0.31	◎	Example II-17	0.51	550	7.5	0.12	○
Example II-18	0.51	260	2.2	0.31	◎	Example II-19	0.52	470	6.3	0.17	◎
Example II-20	0.50	400	5.4	0.19	◎	Example II-19	0.52	470	6.3	0.17	◎
Example II-20	0.50	400	5.4	0.19	◎	Comparative Example I I-1	0.52	100	1.1	0.50	×
Comparative Example I I-2	0.50	120	1.4	0.41	○	Comparative Example I I-1	0.52	100	1.1	0.50	×
Comparative Example I I-2	0.50	120	1.4	0.41	○	Comparative Example I I-3	0.51	220	2.0	0.40	◎
Comparative Example I I-4	0.52	190	1.7	0.42	○	Comparative Example I I-3	0.51	220	2.0	0.40	◎
Comparative Example I I-4	0.52	190	1.7	0.42	○	Comparative Example I I-5	0.50	250	2.8	0.29	○
Comparative Example I I-6	0.50	280	4.2	0.21	○	Comparative Example I I-5	0.50	250	2.8	0.29	○
Comparative Example I I-6	0.50	280	4.2	0.21	○	Comparative Example I I-7	0.51	230	2.1	0.42	○
Comparative Example I I-8	0.49	280	3.9	0.18	×	Comparative Example I I-7	0.51	230	2.1	0.42	○
Comparative Example I I-8	0.49	280	3.9	0.18	×	Comparative Example I I-9	0.50	260	3.0	0.19	×

Claims

1. a fiber mat that contains adhesive by hot pressing is made the method for fiberboard, it is characterized in that:

Make mestha long fibre aggregation by following steps: the approximate long fibre bundle that obtains from mestha bast position that is arranged in parallel with fiber directionality; When long fibre Shu Fangxiang applies tension force to fibre bundle, make fibre bundle carry out shredding;

Make the pad that contains mestha long fibre aggregation, then, by with containing the aqueous solution impregnated pads of thermosetting resin adhesive, and adhesive joined in the mestha long fibre pad, in this aqueous solution the content of resin solid be 20% or below;

Mestha long fibre pad is carried out drying;

Then, the mestha long fibre pad that is added with adhesive is carried out hot pressing.

2. the method for claim 1, it is characterized in that described pad prepares by this way: the mestha long fibre aggregation that will have fiber directionality is unidirectional stacked.

3. the method for claim 1 is characterized in that described pad prepares by this way: the mestha long fibre aggregation vertically stacked that will have fiber directionality.

4. the method for claim 1 is characterized in that described thermosetting resin is a phenolic resins.

5. as each described method among the claim 1-4, it is characterized in that described adhesive-dipping operation is by implementing with the different aqueous solution impregnated pads of two or more infiltration long stapled permeabilitys of mestha.

6. as each described method among the claim 1-4, it is characterized in that described mestha long fibre pad with after the aqueous solution dipping that contains adhesive, the compacting pad is to remove the excess adhesive that adds in the pad.

7. as each described method among the claim 1-4, it is characterized in that forming after the mestha long fibre pad, this pad is carried out the acupuncture operation make the fiber interlocking.

8. make the method for fiberboard by the hot pressing fiber mat for one kind, described fiber mat comprises:

Comprise the mestha that contains adhesive long stapled mestha long fibre pad and comprise the particle pad of the mestha particle that contains adhesive,

It is characterized in that this method comprises the steps:

Laminate aggregation, to provide mestha long fibre pad;

By with containing the aqueous solution impregnated pads of thermosetting resin adhesive, and adhesive is joined in the mestha long fibre pad, in this aqueous solution the content of resin solid be 20% or below; Then,

Laminate mestha long fibre pad and mestha particle pad, to provide fiber mat, then

The hot pressing fiber mat.

9. method as claimed in claim 8 is characterized in that the described fiber mat that laminates formation is 3 layers of pad, and wherein mestha long fibre pad is laminated on the two sides of mestha particle pad.

10. method as claimed in claim 8, it is characterized in that the described fiber mat that laminates formation is 5 layers of pad, wherein mestha long fibre pad is laminated on the two sides of mestha particle pad, laminates one deck mestha particle pad on each surface of the stacked pad of this mestha long fibre again.