CN105818224A - Production method of recombined bamboo wood-grain-imitated decorative material - Google Patents

Abstract

The invention relates to a production method of a recombined bamboo wood-grain-imitated decorative material, and the decorative material is made by the following six steps: collection of recombined bamboo wood, manufacturing of bamboo sheets, wood grain-imitating cold-pressing assembly, end sealing treatment and saw cutting or slicing, and a product is used for veneering decoration. The production method has the beneficial effects as that the decorative material produced with the method can naturally imitate texture of various wood, and is used for surface decoration of various artificial boards; the product avoids the phenomenon of filament jumping, the surface hardness of a decorative sheet is higher than that of an existing technical wood veneering product, and the application cost of paint is reduced; compared with a recombined bamboo floor, the added value of the product is greatly improved; and transformation and upgrading of the recombined bamboo floor and technical wood processing industry are promoted.

Description

Production method of recombined bamboo imitation wood grain decorative material

technical field

The invention relates to a bamboo processing technology, in particular to a method for making imitation wood-grain decorative materials by using recombined bamboo as a raw material.

Background technique

my country is a country that is poor in timber resources but relatively rich in bamboo resources. There are many kinds of bamboos, their distribution range is wide, and the area of bamboo forests ranks first in the world. Bamboo can be matured in 4 years, while wood needs at least 10 years. Using bamboo instead of wood as decorative materials can save more forest resources, reduce building energy consumption, and delay global warming. China's bamboo processing and utilization ranks the world's leading level in terms of product quality and quantity, or in terms of enterprise scale and technological advancement.

Reconstituted bamboo is a new type of high-strength bamboo board prepared by grinding bamboo into longitudinally continuous, transversely loose and interlaced bamboo bundles, and then drying, dipping, drying, paving, high-pressure strengthening molding, etc. The utilization rate of bamboo can generally reach more than 70%; the recombined bamboo floor and recombined bamboo veneer and other products developed by composite technology can improve the performance of bamboo, increase the use value and utilization rate of bamboo, expand the use range of bamboo and prolong its life. The service life is an important way to save bamboo; it is of great significance to the efficient use of bamboo resources, the protection of the ecological environment and the promotion of sustainable development of production.

However, the following outstanding problems still exist in the production of recombined bamboo boards and recombined bamboo veneers: first, the texture of the product is monotonous, and there is no rich texture structure of wood; second, the added value of the product is low, and the production cost is high. Difficult; third, the surface color of recombined bamboo boards is natural color, bleached white and carbonized color, the surface color is too monotonous, it is difficult to meet the market's demand for diversified colors; fourth, the size of recombined bamboo boards is unstable during use , easy to crack.

CN101850573A publishes "a kind of manufacturing method of sliced thin bamboo decorative material", does not consider from the angle of imitating the precious texture of wood, the texture of sliced thin bamboo decorative material is single; Low, high labor costs, resulting in high production costs, complex production process, needs to be softened continuously before planing. CN1788956A announces " make the production method of sliced thin bamboo with bamboo silk ", although the utilization rate of bamboo material is improved, the impregnated isocyanate adhesive that adopts not only causes production cost height, and production process is very complicated, because isocyanate adhesive is easy to mix with Water or water vapor in the air reacts, causing the viscosity of the glue to increase in a short period of time, and finally it cannot be dipped, and the glue is easy to solidify in the dipping pool, resulting in waste of the glue and increasing production costs; at the same time, its manufactured The texture of sliced thin bamboo is not clear, and texture design cannot be carried out.

In order to overcome the above-mentioned shortcomings in the production of recombined bamboo in the prior art, the present invention provides a new production method of recombined bamboo imitation wood grain decorative material.

Contents of the invention

The technical problem to be solved by the present invention is to provide a production method of recombined bamboo imitating wood grain sawing or sliced thin bamboo.

To solve this technical problem, the following technical solutions are adopted:

The production method of the recombined bamboo imitation wood grain decorative material is carried out as follows:

(1) Collection of recombined bamboo material: adopt the recombined bamboo square material made by CN101850573A announcement method or the square material made by similar methods, adopt the "cylindrical recombined bamboo material production method and its forming device" that the applicant applied for on the same day as this application "Cylindrical recombined bamboo material made;

(2) Manufacture of bamboo flakes: the bamboo cylinder is peeled according to a certain thickness in a rotary cutter, and cut into bamboo flakes of a certain specification according to a certain width;

(3) Cold-pressed imitation wood-grain blanks: apply cold-cured urea-formaldehyde resin or modified cold-cured urea-formaldehyde resin or starch adhesive or formaldehyde-free latex to bamboo flakes in a glue spreader, and use double-sided sizing with a sizing amount of 250 —300g/M ² , when cold curing urea-formaldehyde resin, the temperature of the sizing environment should be strictly controlled at 16-35°C. Put the glued bamboo slices into a mold of a certain size and shape, and design the veneer matching method and the number of veneer matching blanks according to the imitation of natural precious wood texture and color or other textures with great decorative effects. Formation.

Formation method

①The simple billet assembly method is to simply repeat the billet assembly of two or more veneers of different colors.

②The recombined decorative material with a slightly complex texture can be assembled with veneers of different colors according to the irregular deformation and matching of the constituent units.

③ Some varieties of recombined decorative materials with complex textures must go through multiple processes to form blanks. Number of blank sheets for veneer

The rough height of the recombined decorative wood directly affects the format size of the quarter-cut and radius-cut textured recombined decorative wood thin bamboo and the maximum yield of sawn timber. Generally, the number of veneers used in blank matching is calculated according to the thickness of the veneer, the compression rate of the slab and the specifications of the final product.

(4) End-capping treatment

In order to prevent the end cracking of the bamboo due to excessive evaporation of water, and to avoid the thin bamboo being torn after sawing or planing, the end-sealing treatment of the bamboo square is carried out with polyvinyl chloride film and adhesive;

(5) Sawing: The sawing methods can be divided into quarter-cut reconstituted decorative timber, radius-cut reconstituted decorative timber and string-cut reconstituted decorative timber.

① Quarter-cut recombined decorative materials

The quarter-cut reconstituted decorative wood is sawn along the direction of bamboo fibers and parallel to the direction of veneer blanking. The sawing direction is shown as OA in Figure 2

② Radius cut recombined decorative materials

The radius-cut recombined decorative material is sawn at a certain angle (90°<α<180°) parallel to the bamboo fiber direction and the veneer blanking direction, and the sawing direction is shown as OC, OD and OE in Figure 2 .

③ String cut recombined decorative materials

The string-cut recombined decorative material is sawn along the tangent direction parallel to the highest vertex of the arc and the bamboo fiber direction at a certain angle (0°≤α<90°). The larger the sawing angle, the more string-cut textures. The more, the wider the flower shape.

(6) Slicing:

According to the requirements of the product, the thickness and angle of sawing or slicing are determined to obtain recombined bamboo imitation wood-grain sawn lumber or slicing thin bamboo lumber.

The beneficial effects of the present invention are that the recombined bamboo imitation wood-grain decorative material obtained by this method can imitate the texture of various precious woods, and obtain sliced thin bamboo with wood texture, which can be used for surface decoration of various wood-based panels; There is a problem of product jumping wires, which avoids the possibility of stabbing the body due to jumping wires after the sale of bamboo products, which leads to concerns about claims; the surface hardness of the decorative board is higher than that of the existing technical wood veneer products, which reduces the application of paint Cost; Compared with the restructured bamboo floor, the added value of the product is greatly improved; it promotes the transformation and upgrading of the restructured bamboo floor and the technological wood processing industry.

Description of drawings

Fig. 1 is the stacking mold schematic diagram of the used assembled bamboo thin slices of this method.

Fig. 2 is a schematic diagram of the sawing or planing direction of the recombined bamboo square material.

Fig. 3 and Fig. 4 are the schematic diagrams showing the wood grain of the sawn or planed bamboo slices in OA direction, OC, OD, OE direction.

Fig. 5 is a schematic diagram of the chord sawing of the recombined bamboo square material.

Figure 6 is a chord texture map.

detailed description

The present invention is described in detail below in conjunction with embodiment:

The production method of the recombined bamboo square material has a number of patent publications, and the product has been on the market for many years. The following is a review of some related technologies, and at the same time a brief introduction to the cylindrical restructured bamboo:

The general steps of the recombinant bamboo production method are as follows:

(1) Processing of raw bamboo bundles or triangular bamboo strips:

1. the processing of conventional bamboo bundles is a known and public prior art;

②The processing of the triangular long bamboo strips is to cut the 4-6 year old moso bamboo into sections, the length of the section is L, and cut the green, knot and yellow vertically into bamboo slices, and then use the special knife for triangular bamboo strips to split the bamboo slices Cut into equilateral or isosceles triangular bamboo strips with consistent dimensions;

(2) Pretreatment of bamboo bundles or bamboo strips: soaking in hydrogen peroxide with a certain solubility or self-prepared treatment solution or dyeing treatment at the same time;

(3) Bamboo bundles or strips are dipped or sprayed with glue, then drained and dried;

(4) Cold-pressed blank forming: For the recombined bamboo square material pressed by bamboo bundles, it is a conventional rectangular mold high-pressure forming; On the same day, it applied for the patent "Cylindrical Recombined Bamboo Production Method and Its Forming Device" to realize it.

(5) Curing molding: put the bamboo square material or bamboo garden cylinder with urea-formaldehyde resin or phenolic resin into the curing channel, and heat and cure; the bamboo square material or bamboo garden cylinder with formaldehyde-free latex applied in the balance room Curing at room temperature;

Set the temperature in the curing channel: the highest curing temperature of urea-formaldehyde resin is 105 degrees for the natural color plate, and 115 degrees for the carbonized plate; the highest curing temperature for the phenolic resin is 125 degrees for the natural color plate, and 135 degrees for the carbonized plate;

To make the recombined bamboo imitation wood grain decorative material, proceed as follows:

(1) After making square column reorganized bamboo material and cylinder reorganized bamboo material according to the above method, collect them as raw materials for the next step;

(2) Manufacture of bamboo flakes: the bamboo cylinder is peeled according to a certain thickness in a rotary cutter, and cut into bamboo flakes of a certain specification according to a certain width;

(3) Cold-pressed imitation wood-grain blanks: apply cold-cured urea-formaldehyde resin or modified cold-cured urea-formaldehyde resin or starch adhesive or formaldehyde-free latex to bamboo flakes in a glue spreader, and use double-sided sizing with a sizing amount of 250 —300g/M ² , when cold curing urea-formaldehyde resin, the temperature of the sizing environment should be strictly controlled at 16-35°C. Put the glued bamboo slices into a mold of certain specifications and shapes as shown in Figure 1, and design the veneer matching method and the veneer matching method according to the imitation of natural precious wood texture and color or other textures with great decorative effects. The number of sheets is assembled.

Formation method

①The simple billet assembly method is to simply repeat the billet assembly of two or more veneers of different colors.

②The recombined decorative material with a slightly complex texture can be assembled with veneers of different colors according to the irregular deformation and matching of the constituent units.

③ Some varieties of recombined decorative materials with complex textures must go through multiple processes to form blanks. Number of blank sheets for veneer

The rough height of the recombined decorative wood directly affects the format size of the quarter-cut and radius-cut textured recombined decorative wood thin bamboo and the maximum yield of sawn timber. Generally, the number of veneers used in blank matching is calculated according to the thickness of the veneer, the compression rate of the slab and the specifications of the final product.

(4) End-sealing treatment: In order to prevent the end cracking of the restructured bamboo square material due to excessive evaporation of water, and to prevent the thin bamboo from being torn after planing, PVC film or adhesive is used to seal the restructured bamboo square material or cylindrical material. Carry out capping treatment;

(5) Sawing: General varieties can be realized only by sawing once, and special varieties need to be re-sawed after the first sawing plate is glued and reassembled. The decorative texture of the design is closely related to how the wool is sawn.

The sawing method can be divided into quarter-cut reconstituted decorative timber, radius-cut reconstituted decorative timber and string-cut reconstituted decorative timber.

① Quarter-cut recombined decorative materials

The quarter-cut reconstituted decorative wood is sawn along the bamboo fiber direction and parallel to the direction of veneer mating. The sawing direction is shown as OA in Figure 2, and the obtained texture is shown in Figure 3.

② Radius cut recombined decorative materials

The radius-cut recombined decorative material is sawn at a certain angle (90°<α<180°) parallel to the bamboo fiber direction and the veneer blanking direction, and the sawing direction is shown as OC, OD and OE in Figure 2 , the resulting texture is shown in Figure 4.

③ String cut recombined decorative materials

The string-cut recombined decorative material is sawn at a certain angle (0°≤α<90°) along the tangent direction parallel to the highest apex of the arc and the bamboo fiber direction as shown in Figure 5. The larger the sawing angle, the more string The more the number of cut textures, the wider the flower shape, and the obtained texture is shown in Figure 6.

(6) Slicing: According to the requirements of the product, the thickness and angle of slicing are determined to obtain different recombined bamboo imitation wood grain slicing thin bamboo materials.

In the manufacturing process of bamboo squares or bamboo cylinders, various combed woods and bamboo bundles can be added to form bamboo-wood composite squares or bamboo-wood composite cylinders, which are used to recombine bamboo and wood imitation wood grain decorative materials. manufacture.

Claims (1)

1. a Recombined bamboo imitation wood stricture of vagina decoration material production method, is characterized in that carrying out as follows:

(1) collection of Recombined bamboo: use the square material that the CN101850573A bulletin square material of Recombined bamboo made of method or similar process are made, the cylinder Recombined bamboo material that " cylinder recombining bamboo production method and the shaped device thereof " using the applicant and the application to apply on the same day is made；

(2) bamboo thin slice manufactures: by Recombined bamboo square stock slicing well-thought-out plan thin slice；Bamboo cylinder is carried out rotary-cut according to certain thickness in peeler, and carries out cutting into the bamboo thin slice of certain specification by the width of user's requirement；

(3) imitation wood stricture of vagina is colded pressing assembly: bamboo thin slice being executed in glue spreader cold curing Lauxite or modified cold curing Lauxite or starch adhesive or without aldehyde latex, use two-sided applying glue, resin added is 250 300g/M², when executing cold curing Lauxite, the temperature of applying glue environment is strict with and is controlled at 16 35 DEG C；The bamboo thin slice having executed glue is put in the mould of certain specification and shape, according to imitative natural precious timber texture and color and luster or the texture of other great decorative effects, design veneer and join base mode and veneer is joined the number of base and carried out assembly；

Assemble pattern

1. simple assemble pattern is that the veneer of two or more different color and lusters is by simply repeating assembly；

2. the recombinant decorative material kind that texture is slightly complicated can be done irregular deformation collocation with the veneer of different color and lusters by component units and carry out assembly；

3. the recombinant decorative material kind that some textures are complicated, it is necessary to through multiple working procedure assembly molding；

4. base number joined by veneer

The height of recombinant decorative material cant directly affects the book size of quarter sawing and the half thin bamboo of edger-grain recombinant decorative material and the maximum volume recovery of sawn timber, and the specification being typically based on the thickness of veneer, the compression ratio of slab and finished product calculates the use number of veneer when joining base；

(4) termination process: in order to prevent Recombined bamboo square stock from producing end check because of excessive water evaporation, be torn in order to avoid bamboo thin after slicing simultaneously, use polrvinyl chloride film or adhesive that Recombined bamboo square stock or cylinder material are carried out termination process；

(5) sawing: as long as general sawing of kind just reflects, special kinds needs again to saw system after the plate gluing restructuring of saw system for the first time, just embodies, and the decoration texture of design and cant are closely related by which kind of mode system of sawing；

Sawing mode can be divided into quarter sawing recombinant decorative material, half quarter sawing recombinant decorative material and flat-cut recombinant decorative material；

1. quarter sawing recombinant decorative material: quarter sawing recombinant decorative material is along bamboo fiber direction, is parallel to veneer and joins the sawing of base direction, and its sawing direction is as shown in OA in Fig. 2

2. half quarter sawing recombinant decorative material: half quarter sawing recombinant decorative material is to join base direction angled (90 ° ＜ α ＜ 180 °) sawing and form along being parallel to bamboo fibre direction and veneer, and its sawing direction is as shown in OC, OD and OE in Fig. 2；

3. flat-cut recombinant decorative material: flat-cut recombinant decorative material is to form along being parallel to arc the highest apex tangential direction angled with bamboo fibre direction (0 °≤α ＜ 90 °) sawing, saw controlling angle is the biggest, the bar number of flat grain is the most, and flower-shape is the most roomy；

(6) sawing or slicing:

According to the requirement of product, determine sawing or the thickness of slicing and angle, obtain Recombined bamboo imitation wood stricture of vagina sawing material or sliced bamboo material.