CN1026140C

CN1026140C - Nonwoven fabric and its producting process and apparatus

Info

Publication number: CN1026140C
Application number: CN92109058A
Authority: CN
Inventors: 周征彦
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-07-31
Filing date: 1992-07-31
Publication date: 1994-10-05
Anticipated expiration: 2007-07-31
Also published as: CN1068376A

Abstract

The present invention provides non-woven fabric and a making method thereof and a making device thereof. Short fibre is sent to a cotton carding machine to be carded into a fibre cotton net. Then long fibre is uniformly laid on the cotton net up and down. The short fibre and the long fibre are sent into a forming machine to be laid to and fro. The long fibre is vertically and horizontally crossed into the shape of a net. The long fibre and the short fibre are mutually overlapped up and down, and are tangled and mixed into a whole after being needled. Therefore, the non-woven fabric with high tensile performance, high tear resistance, high perforation resistance and high abrasion resistance is formed. The device comprises the cotton carding machine, the forming machine, a post processing device and a fibre feeding device.

Description

Nonwoven fabric and its producting process and apparatus

The present invention relates to a kind of Nonwovens and manufacture method thereof and preparation equipment, especially relate to Nonwovens and manufacture method and manufacturing equipment that a kind of long and short fiber mixes.

The method for making of Nonwovens has much at present, and wherein prevailing is that chemical fibre, string, animal hair etc. are used the fiber carding equipment carding, is combined into Nonwovens through chemical method, needle point method, hot melt or other modes again.Owing to be subject to carding equipment, the length of these fibers is about about 1 to 5 inch, so the Nonwovens of being produced that is all staple fibre.But when using, the high-intensity chance of many special requirement is arranged, therefore,, be difficult to make product strength to have breakthrough except promoting on the intensity of fiber itself.The Nonwovens used of civil engineering for example, as be used for riverbank, the sea wall protection works of torrent, alluvion, geotextiles is not crushed at the Da Shi more than in the placement ton, must bear also that tide impacts, sandstone friction and not damaged, that such requirement must be used is thicker, more closely Nonwovens is, but so not only increase cost, also influence the requirement of water permeability.

The Nonwovens carpet also has same situation, and carpet in the past is owing to the short relation of fiber, and fiber comes off because of the friction of sole easily, forms the phenomenon of fluffing, and is very big to quality influence, so can't mention in the same breath with woven carpet always.

The shortcoming of staple fibre Nonwovens has been described in the front, has the people to improve with the method as Fig. 1 and 2, and Fig. 1 is the vertical view of Nonwovens manufacture process commonly used, and Fig. 2 is the front view of Fig. 1.It is that front end on make-up machine chassis 31 is provided with the stiffener coiled hair 60 that volume has stiffeners 61 such as cloth or long fiber, and stiffener 61 is laid on the make-up machine chassis 31.When the cellucotton net about 50 that is come out by the carding machine combing reciprocally is layered on the make-up machine chassis of moving forward 31, just be laid on the stiffener 61 and form as shown in Figure 3 Nonwovens, Fig. 3 is the cross-sectional view without the Nonwovens commonly used of post processing, through forming Nonwovens as shown in Figure 4 after the acupuncture, Fig. 4 is the cross-sectional view through the Nonwovens commonly used of post processing again.Though improve through intensity after the acupuncture is existing, but do its cost height of stiffener with cloth, and water permeability is affected, as doing stiffener with long fiber, then longitudinal strength has raising and not raising of transverse strength, produce vertical, the phenomenon that transverse strength is different, and stiffener is positioned at the bottom of Nonwovens, though stretching resistance is strong, but the ductility of Nonwovens reduces, and therefore makes can't stretch when the Nonwovens part is subjected to the gravity pressurization to break and worn out, when pullled by external force, the strength of pullling can't not disperseed the shortcoming that the result causes Nonwovens to tear by other directions of cloth because of there being ductility.

The object of the present invention is to provide a kind of Nonwovens and manufacture method and manufacturing equipment with high tensile, high tear resistance, high anti-wearing out property and high-wearing feature.

A kind of Nonwovens of the present invention, it comprises two fibre layers at least, and each described long fiber layer is formed by substantially parallel long fiber, and it is staggered superimposed and be combined into one that two described long fiber layers are.

A kind of Nonwovens of the present invention, it also comprises at least two layers of web that is formed by staple fibre, one described web, two is staggered described long fiber layer and another described web and is built up a composite bed successively, and it is made of at least one composite bed and is combined into one.

A kind of Nonwovens of the present invention, described composite bed comprise that also two are separately positioned on the long fiber layer on the described web outer surface, and the described long fiber that superimposed of per two described composite beds are located is staggered.

The manufacture method of a kind of Nonwovens of the present invention, the step that it comprises is:

(1) with many basically the long fiber of parallel longitudinal send in the make-up machine;

(2) superimposed described long fiber is carried out post processing.

The manufacture method of a kind of Nonwovens of the present invention, it also is included in the step that make-up machine sent into web when sending into make-up machine together by described long fiber.

The manufacturing equipment of a kind of Nonwovens of the present invention, it comprises a make-up machine, an after-treatment device and many long stapled fiber feedwaies is provided that described fiber feedway is arranged on the feed end of described make-up machine.

More particularly, described fiber feedway comprises that one can set up the guide frame and a pair of godet roller of spinning cake on it, and described guide frame is arranged on the side of the feed end of described make-up machine, described godet roller be arranged on described make-up machine feed end above or below.Or,

Described fiber feedway comprises a warp thread coiled hair and a pair of godet roller, described warp thread coiled hair be horizontally installed on described make-up machine feed end above or below, described godet roller is arranged between the feed end of described warp thread coiled hair and described make-up machine.

The invention has the advantages that since long fiber and the web intersecting that forms by staple fibre together and the long fiber of centre be netted, and after acupuncture etc., long and short mixed with fibers is integral, make long fiber tightly envelope staple fibre, thereby form a kind of high tensile, high anti tear, highly anti-ly wear out, the Nonwovens of high abrasion; Because the spacing between the long fiber is bigger, therefore do not influence the permeability of this Nonwovens; In addition, the method and apparatus that is used to produce this Nonwovens is quite simple, therefore has industrial value.

Below in conjunction with accompanying drawing most preferred embodiment of the present invention is described in detail, therefrom can see the more advantage of the present invention.

Fig. 1 is a kind of vertical view of Nonwovens manufacture process commonly used;

Fig. 2 is the front view of Fig. 1;

Fig. 3 is the cross-sectional view without the Nonwovens commonly used of post processing;

Fig. 4 is the cross-sectional view through the Nonwovens commonly used of post processing;

Fig. 5 is the stereogram of long and short fiber mixing Nonwovens of the present invention;

Fig. 6 is the stereogram of long fiber Nonwovens of the present invention;

Fig. 7 is the schematic diagram of manufacture process of the present invention;

Fig. 8 is the vertical view of Fig. 7;

Fig. 9 is the schematic diagram of another embodiment of manufacture process of the present invention;

Figure 10 is the vertical view of Fig. 9.

Now referring to Fig. 5, a kind of Nonwovens of the present invention, it is made of two composite beds 213, each composite bed 213 comprises that the long fiber layer that the long fiber layer 212, the web 50, two that are superimposed together successively are staggered long fiber layer 212, another web 50 and another long fiber layer 212, two composite bed 213 superposed surfaces is staggered.Web 50 is formed by staple fibre with existing identical; The long fiber layer is formed by substantially parallel long fiber.Two composite beds 213 are combined into one by post processing modes such as acupuncture, hot pressing, chemistry, liquid drugs injection or hot melts.Certainly composite bed 213 also can be with two outer field long fiber layers, but the intensity of Nonwovens will descend to some extent like this.

Now referring to Fig. 6, it is a kind of Nonwovens that only has the long fiber layer to form of the present invention, and different with the Nonwovens among Fig. 5 is wherein not have web 50.

Now referring to Fig. 7 to 10, they are schematic diagrames of manufacture process of the present invention, know to demonstrate method and apparatus of the present invention from figure.The manufacture method of a kind of Nonwovens of the present invention, the step that it comprises has: (1) forms a web 50 by carding machine 10; (2) with web 50 and Duo Gen basically vertically (throughput direction of web 50) parallel and two layers of long fiber 211 that lay respectively at web 50 upper and lower sides send in the make-up machine 30; Certainly, also be fine if only one deck long fiber 211 is sent into the make-up machine 30 above or below web 50.(3) handle the web 50 of moulding and the applications as laminates of long fiber 211 with the post processing mode of acupuncture, hot pressing, chemistry, liquid drugs injection or hot melt etc.

For the Nonwovens that only has long fiber to form, only need two steps: (1) with many basically the long fiber of parallel longitudinal send in the make-up machine 30; The post processing mode of (2) usefulness acupuncture, hot pressing, chemistry, liquid drugs injection or hot melt etc. is handled the applications as laminates of the long fiber 211 of moulding.

The manufacturing equipment of a kind of Nonwovens of the present invention, it comprises that a carding machine 10, a make-up machine 30, an after-treatment device (not drawing among the figure) and provide the fiber feedway of many long fibers 211, wherein carding machine 10, make-up machine 30 and after-treatment device and annexation thereof have not just been given unnecessary details here with existing identical.Shown in Fig. 7 and 8, the fiber feedway comprise a guide frame 20 that can set up spinning cake 21 on it, the two pairs of godet rollers 214 and two have a plurality of 211 that pass for long fiber, along the guide plate 215 of laterally uniform aperture, guide frame 20 is arranged on the feed end side of make-up machine 30, godet roller 214 is separately positioned on the above and below of the feed end of make-up machine 30, and guide plate 215 is horizontally installed on the upstream of godet roller 214 respectively.The effect of guide plate 215 is that long fiber 211 can be laid on the web 50 equably.As shown in Figure 9, wherein most of structure is identical with Fig. 7 and 8, and the structure of different is fiber feedway is incomplete same.The fiber feedway comprises two warp thread coiled hairs 70, two pairs of godet rollers 214 and two guide plates 215, identical in the structure of godet roller 214 and guide plate 215 and position and Fig. 7 and 8 wherein, warp thread coiled hair 70 can with existing loom on used identical.Warp thread coiled hair 70 is horizontally installed on the above and below of the feed end of make-up machine 30 respectively.

For only needing one deck long fiber 211 to send into the equipment of make-up machine 30, can save a pair of godet roller 214, a guide plate 215 and a warp thread coiled hair 70 with web 50.If be used to produce Nonwovens as shown in Figure 6, then can also save carding machine 10.

The process of its manufacturing is staple fibre to be sent into be carded to staple fibre web 50 output afterwards in the carding machine 10, again the long fiber on the spinning cake 21 or on the warp thread coiled hair 70 211 is pulled out and is layed in equably by the fiber feedway the upper and lower side of staple fibre web 50 one by one, send in the make-up machine 30 then together, because the chassis 31 of make-up machine 30 is operation forward, and the staple fibre web that has long fiber 211 reciprocally is layed on the chassis 31 for about 50 one-tenth, promptly " it " font is as shown in Figure 1 laid, so the time Nonwovens that forms as shown in Figure 5, long fiber 211 is folded mutually layer by layer with staple fibre web 50, and long fiber 211 also becomes crisscross shape, make Nonwovens in length and breadth to the pulling force unanimity, and then make Nonwovens through after the after-treatment device processing, its structure has just played variation, by length, the clearly demarcated layer by layer structure of staple fibre becomes length, staple fibre is mixed into one, and long fiber envelope tightly staple fibre, and forms a kind of high tensile, high anti tear, high anti-wearing out, high abrasion, high antijamming Nonwovens.

Claims

1, a kind of Nonwovens, it comprises two fibre layers at least, each described long fiber layer is formed by substantially parallel long fiber, it is staggered superimposed and be combined into one that two described long fiber layers are, it is characterized in that, it also comprises the web that one deck is at least formed by staple fibre, and a described web, two is staggered described long fiber layer and another described web and is built up a composite bed successively, and it is made of at least one composite bed and is combined into one.

2, a kind of Nonwovens as claimed in claim 1 is characterized in that, described composite bed comprises that also two are separately positioned on the long fiber layer on the described web outer surface, and the described long fiber that superimposed of per two described composite beds are located is staggered.

3, a kind of manufacture method of Nonwovens is characterized in that, it comprises the following steps:

(1) in a carding machine, forms a staple fibre web;

(2) by a fiber feedway, supply with many long fibers after the carding machine before the make-up machine continuously;

(3) described long fiber layer is laid respectively at the top, below of described web together with the equidirectional molding machine of web;

(4) repeatedly put the long fiber layer of described parallel longitudinal and staple fibre web alternately to form crisscross long and short fiber composite bed;

(5) described composite bed carries out post processing again.

4, the manufacturing equipment of Nonwovens in, it comprises a make-up machine, a carding machine and an after-treatment device, it is characterized in that, it comprises that also one provides many long stapled fiber feedwaies, described fiber feedway is arranged on the feed end of described make-up machine, and the charging front end that described carding machine is arranged on make-up machine is aimed between two fibrages that described fiber feedway confesses the delivery outlet of a web.

5, a kind of equipment as claimed in claim 4, it is characterized in that, described fiber feedway comprises that one can set up the guide frame and a pair of godet roller of spinning cake on it, described guide frame is arranged on the side of the feed end of described make-up machine, described godet roller be horizontally installed on described make-up machine feed end above or below.

6, a kind of equipment as claimed in claim 7, it is characterized in that, described fiber feedway comprises a warp thread coiled hair and a pair of godet roller, described warp thread coiled hair be horizontally installed on described make-up machine feed end above or below, described godet roller is horizontally installed between the feed end of described warp thread coiled hair and described make-up machine.

7, as claim 7,8 or 9 described a kind of equipment, it is characterized in that, it also comprise one have that the described long fiber of a plurality of confessions passes, along the guide plate of laterally uniform prong, described guide plate is horizontally installed on the upstream or the downstream of described godet roller.

8, a kind of equipment as claimed in claim 11 is characterized in that, described fiber feedway also comprises another to godet roller, and described another is horizontally installed on the below or the top of the feed end of described make-up machine to godet roller.

9, a kind of equipment as claimed in claim 3, it is characterized in that, described fiber feedway also comprises another warp thread coiled hair and another to godet roller, and described another warp thread coiled hair and described another are horizontally installed on the below or the top of the feed end of described make-up machine to godet roller.

As claim 12 or 14 described a kind of equipment, it is characterized in that 10, it comprises that also two have the laterally guide plate of uniform prong of edge that the described long fiber of a plurality of confessions passes, described guide plate is horizontally installed on the upstream or the downstream of described godet roller.