JPH07331567A - Woven or knit fabric having multilayer structure and its production - Google Patents

Abstract

PURPOSE:To provide a woven or knit fabric having multilayer structure, usable as a substitute for polyurethane for cushioning material and various other uses and provide a process for producing the fabric. CONSTITUTION:This fabric is composed of a pair of cloth pieces 1a, 1b placed parallel to each other and a space yarn 2 sewn into the fabric in a state reciprocated between the cloth pieces 1a, 1b to support the pieces 1a, 1b interposing a prescribed gap S. The racking yarn of at least one cloth piece 1a is over-run to successively form a number of loops, which are raised with a raising machine to form a raised face 4. The raised face 4 is formed of a number of separate fluffs 3... having cut tip ends.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-layer structure woven / knitted fabric and a method for producing the same.

[0002]

2. Description of the Related Art Conventionally, urethane foam has been mainly used as a cushion material in various fields such as furniture, automobile parts, sports goods, and building materials.

[0003]

However, the use of CFCs and alternative CFCs during urethane foaming has been found to destroy the ozone layer of the earth, and the use of urethane has been banned due to global environmental problems. . Further, urethane has a problem that it is difficult to dispose of urethane because it emits a toxic gas when incinerated and has no recyclability.

Therefore, the present invention solves the above-mentioned problems and provides a multilayer structure woven or knitted fabric which can be used as a substitute for urethane as a cushioning material and has a wide range of applications other than the cushioning material, and a method for producing the same. The purpose is to do.

[0005]

In order to achieve the above object, a multi-layer structure woven or knitted fabric according to the present invention comprises a pair of cloth-like bodies arranged in parallel with each other, and a space between the pair of cloth-like bodies. A multi-layer structure woven or knitted fabric comprising a space thread that is sewn back and forth and that supports the cloth-like body at a predetermined interval, the outer surface of at least one of the cloth-like bodies having a cut tip portion. The raised surface is formed by a large number of independent raised hairs.

Further, the multi-layer structure woven or knitted fabric according to the present invention comprises a pair of cloth-like bodies arranged in parallel with each other, and the cloth-like body is sewn back and forth between the pair of cloth-like bodies. A multi-layered structured woven or knitted fabric comprising space yarns supporting at a predetermined interval, the outer surface of at least one of the cloth-like bodies being a raised surface formed by a large number of loop-shaped raised hairs.

The multi-layer structure woven or knitted fabric according to the present invention has a pair of cloth-like bodies arranged in parallel with each other, and is sewn back and forth between the pair of cloth-like bodies and the cloth-like body. A multi-layered woven or knitted fabric comprising a space yarn supporting at a predetermined interval, the outer surface of at least one of the cloth-like bodies having a plurality of independent naps having a cut tip portion, and a plurality of loop-shaped naps In this case, the brushed surface is formed.

In the method for manufacturing a multi-layer structure woven or knitted fabric according to the present invention, a pair of cloth-like bodies arranged in parallel with each other and a pair of cloth-like bodies are reciprocally sewn and sewn together. A method for producing a multi-layer structure woven or knitted fabric comprising space yarns supporting a cloth-like body at predetermined intervals, wherein at least one of the above-mentioned cloth-like yarns is overrunner to sequentially form a large number of loop portions. After that, the loop portion is raised by a raising machine to form a raised surface.

Further, the method for producing a multi-layer structure woven or knitted fabric according to the present invention comprises: a pair of cloth-like bodies arranged in parallel with each other; A method for producing a multi-layer structure woven or knitted fabric comprising a space yarn supporting a cloth-like body at predetermined intervals, wherein at least one of the above-mentioned cloth-like bodies is overrun to form a large number of loop portions in sequence. The brushed surface is then used.

[0010]

In the free state, the pair of cloth-like bodies are held at a predetermined interval through the space thread. When a force is applied to the pair of cloth-like bodies to approach each other, the space yarn between the cloth-like bodies bends while accumulating elastic energy, and the cloth-like bodies approach each other. When the force does not act on the cloth-like body, the space yarn is restored to a state close to a straight line, and the distance between the pair of cloth-like bodies returns to the predetermined distance.

Since the raised surface is formed by a large number of independent raised hairs having a cut tip portion or a large number of looped raised hairs, it becomes a soft surface having a certain degree of elasticity, and
It has a smooth feel.

Manufacture of a multi-layer structure woven or knitted fabric in which at least one cloth-like body overrunner is overrun to form a large number of loop portions one after another, and then the loop portions are raised by a raising machine to form a raised surface. In the method, since the loop portion can be surely raised, the raised surface becomes extremely soft and the surface feels smooth. In addition, it is possible to cut a middle portion of the loop portion with a raising machine to form a large number of independent raised hairs having the cut tip portions. Alternatively, the loop portion can be simply raised by a raising machine to form a large number of loop-shaped raised hairs. Alternatively, independent naps and looped naps may be mixed.

Further, in the method for producing a multi-layer structure woven or knitted fabric in which at least one cloth-like body has overrunners and a large number of loop portions are sequentially formed to form a raised surface, the tension in the warp direction of the ground yarn is used. The loop portion of the weft yarn in the weft direction naturally naps to form a napped surface composed of looped naps.

[0014]

The present invention will be described in detail below with reference to the drawings showing the embodiments.

FIG. 1 is a first view of a multilayer structure woven or knitted fabric according to the present invention.
This embodiment shows a woven and knitted fabric having a pair of cloth-like bodies 1a and 1b arranged in parallel with each other and a pair of cloth-like bodies 1a and 1b.
And a space thread 2 for supporting the cloth-like bodies 1a and 1b at a predetermined interval S and being sewn back and forth between them.

As shown in FIGS. 2 and 4, the cloth-like bodies 1a and 1b are ground yarns 5 chain-knitted in the warp direction and the ground yarns 5 ...
, The zigzag thread 6 inserted in the zigzag in the weft direction. As the ground yarn 5 and the swing yarn 6, for example, a binder composite yarn including a flame-retardant polyester fiber (not shown) and a polyamide fiber binder yarn 12 having a core-sheath two-layer structure shown in FIG. 3 is used. Are preferable in terms of strength, durability and flame retardancy. Binder yarn of this binder composite yarn 12
Is a core material made of high-melting polyamide with a melting point of about 220 ° C.
13 and an outer layer portion 14 covering the core material portion 13 and made of a low melting point polyamide having a melting point of about 140 ° C.

The ratio of the flame-retardant polyester fiber to the polyamide fiber binder yarn 12 is, for example, 60%: 40.
% Is preferable in terms of durability, but other than that,
It is also free to change the ratio within the range of 50% to 50% to 70% to 30%. The polyamide fiber binder yarn 12
In addition to the above, there are combinations shown in Table 1 below.

[0018]

[Table 1]

As described above, the ground yarns 5 ... And the swing yarns 6 ... Are binder composite yarns, and therefore the cloth-like bodies 1a, 1b are
There is an advantage that the waist becomes strong and does not get tired.

The space yarn 2 is reciprocated between the one cloth-shaped body 1a and the other cloth-shaped body 1b in a substantially S-shape and is sewn in zigzag (see FIG. 2). As a result, the space thread 2
However, the exposed portions on the outer surface side of the cloth-like bodies 1a and 1b are reduced, and the portions contacted with other members are reduced, so that durability such as abrasion resistance can be improved.

Furthermore, the space yarn 2 preferably comprises a monofilament yarn. Thereby, the impact resilience is increased and excellent cushioning properties are obtained. Space thread 2
It is preferable to use polyethylene or polyamide as the material of the above because it can increase the impact resilience, but other resins can be used freely. Further, it is desirable that the thickness of the space yarn 2 be about 15 denier to 220 denier.

Then, returning to FIG. 1, a large number of independent raised hairs 3 having cut tip portions are formed on the outer surface of the one cloth-like body 1a. That is, the outer surface of at least one of the cloth-like bodies 1a is a raised surface 4 formed by a large number of independent raised hairs 3 ... Independent brushing 3 ...
As shown in FIG. 4, the yarns 6 ... Are cut at a large number of points and the cut ends are raised.

As a result, the raised surface 4 becomes a soft surface rich in elasticity and has a smooth touch. In particular, since the independent raised hairs 3 have a cut tip portion, when the human skin is slid on the raised surface 4, for example, the roughened skin may be caught by the independent raised hairs 3. Without
You can get a pleasant feeling.

The thickness T of this woven or knitted fabric is 2.5 mm.
It is set to about 60 mm. Further, the height dimension H of the individual raised hairs 3 is set to about 1 mm to 10 mm. Further, the predetermined interval S is set to about 2 mm to 60 mm.

Next, a method for manufacturing the multi-layer structure woven / knitted fabric will be described. As shown in FIG. 5, the yarn 6 of one cloth-like body 1a is overrunner to sequentially form a large number of loop portions 7 ... Specifically, when knitting the pair of cloth-like bodies 1a and 1b and the space yarn 2 with a double Russell machine, the timing of knockover is adjusted (so that it becomes deeper), and the loop portions 7 ... Form. In FIG. 5, only one yarn 6 is shown, but in reality, a large number of yarns 6 are arranged side by side at a predetermined pitch in the lateral direction, and the loop portions 7 are densely formed. . Further, the yarn 6 of the other cloth-like body 1b is not overrun (that is, the loop portions 7 ... Are not formed).

Then, as shown in FIGS. 6A and 6B, the loop portion 7 is raised by the raising machine 8 (described above).
The raised surface 4 is formed. Specifically, the raising machine 8 has a large number of raising needles 9 that are locked to the loop portion 7. The raising needle 9 engages the loop portion 7 as shown in FIG. 6 (A) to raise the loop portion 7. Further, as shown in FIG. 6 (B), the raised needle 9 is rotated to cut the tip of the loop portion 7 to form two independent raised hairs 3 from one loop portion 7.

When the entire outer surface of the cloth 1a is raised in this manner, the woven or knitted fabric shown in FIGS. 1, 2, and 4 is completed. In the illustrated example, one cloth-like body 1a is arranged on the upper side and the other cloth-like body 1b is arranged on the lower side, but it may be upside down.

However, when an external force acts in a direction to bring the cloth-like bodies 1a and 1b closer to each other, the independent raised hairs 3 bend while accumulating elastic energy, and the space yarn 2 also accumulates elastic energy. The cloth-like bodies 1a and 1b are curved to be relatively close to each other. Then, when the external force is no longer applied, the independent raised hairs 3 ... and the space yarn 2 are restored, the cloth-like bodies 1a and 1b are relatively separated from each other, and the mutual space size is returned to the predetermined space S. As a result, the elasticity that can be sufficiently used as the cushion material can be exhibited.

Therefore, this woven or knitted fabric can be used as a substitute for urethane, which has a problem in that it produces toxic gases and CFCs that cause the destruction of the ozone layer of the earth, and does not produce toxic gases during production. Moreover, since it does not use CFCs or CFC substitutes, it can contribute to pollution prevention. It also has the advantage that it has a higher tensile strength than urethane. Furthermore, since it has many voids, it is lightweight.

The woven or knitted fabric can be used as a cushioning material for seats of vehicles or chairs of furniture. In particular, by stacking a plurality of woven or knitted fabrics, it is possible to substitute for a thick urethane pad. Further, since the raised surface 4 has a good feel to the skin, the effect of protecting the body can be obtained by using the raised surface 4 on a part that directly or indirectly contacts the skin of a person such as shoes or clothes, or sports equipment. Moreover, it has excellent breathability and hygroscopicity, and can eliminate discomfort caused by rough skin and sweat. Also,
When used as a lining material for sports equipment cases such as golf caddy bags, it helps protect sports equipment.
Further, since it has good air permeability, and the independent raised hairs 3 are densely formed, it can also be used as an air filter or a liquid filtering material. Besides, it can be effectively used as various cushioning materials in the fields of civil engineering and construction, transportation, agriculture and the like.

Further, the space yarn 2, the ground yarn 5, and the swing yarn 6
However, since it is made of resin such as polyester, polypropylene, polyamide, etc., it can be recycled and contribute to the protection of the global environment.

Table 2 below shows data of a woven or knitted fabric of one specific example.

[0033]

[Table 2]

The gauge of the woven or knitted fabric of this one specific example was set to 40 C / in. And 22 W / in. On the machine.

Next, FIG. 7 shows a second embodiment, in which the multilayer structure woven / knitted fabric has outer surfaces of both cloth-like bodies 1a and 1b.
The raised surfaces 4 and 4 are formed by a large number of independent raised hairs 3 ...

To manufacture this woven or knitted fabric, the yarns 6 of both cloth-like bodies 1a and 1b are overrun to form a large number of loop portions 7 ... The loop portions 7 of the strips 1a and 1b are shown in FIG.
(B) is raised to form independent raised hairs 3 ...

The woven and knitted fabric is soft on both sides and has a smooth feel. Further, since a large number of independent raised hairs 3 are densely present on both sides, it is particularly effective as an air filter or a liquid filter material.

Next, FIG. 8 shows a third embodiment. In this multi-layer structure woven / knitted fabric, the outer surface of one cloth-like body 1a is provided with a plurality of loop-like raised hairs 10 ... It is what Specifically, as shown in FIG. 9, a part of the yarn 6 of the cloth-like body 1a is raised in a loop shape to form loop-shaped raised hairs 10 ... In this way, since the swing thread 6 is not cut in the middle, there is no risk that the swing thread 6 will come off from the ground threads 5.

In order to manufacture this woven or knitted fabric, the yarn 6 of the one cloth 1a is overrun to form a large number of loops 7 ... (See FIG. 5). Thereafter, as shown in FIGS. 10A and 10B, the loop portions 7 are raised by the raising machine 8 to form loop-shaped raised hairs 10.
Specifically, as shown in FIG. 10A, the raising machine 8 is rotated to lock the raising needle 9 on the loop portion 7 and raise the loop portion 7. Further, as shown in FIG. 10B, the raising needle 9 rotates and the tip of the raising needle 9 comes off the loop portion 7. That is,
The raised needle 9 is configured to be disengaged from the loop portion 7 while being bent as shown by an imaginary line in the drawing, and does not cut the tip portion of the loop portion 7. By raising the entire outer surface of the cloth 1a in this manner, the woven or knitted fabric shown in FIGS. 8 and 9 is completed.

The woven or knitted material can also be manufactured by the following other manufacturing method. That is, one cloth-like body 1
The loop yarn 7 of a is overrun and a large number of loop portions 7 are sequentially formed to form the raised surface 4. Explaining this in detail, when the loop portions 7 are formed (see FIG. 5), the base end portions of the loop portions 7 are tightened by the tension of the ground yarns 5, and the base end portions are bent to form the loop portions 7. ... rises naturally (see Fig. 9). As a result, looped brushed 10 ...
Is formed. According to this manufacturing method, there is an advantage that the raising machine 8 is not required, which contributes to the reduction of equipment and the number of manufacturing steps can be reduced.

In order to more completely raise the loop-shaped raised hairs 10, it is preferable to use the above-mentioned raising machine 8 for raising hairs.

Next, FIG. 11 shows a fourth embodiment, in which the multilayer structure woven / knitted fabric has outer surfaces of both cloth-like bodies 1a and 1b.
The raised surfaces 4 and 4 are formed by a large number of looped raised hairs 10 ...

To manufacture this woven or knitted fabric, the yarns 6 of both cloth-like bodies 1a and 1b are overrun to form a large number of loop portions 7 ... (See FIG. 5). After that, the loop portions 7 of both cloth-like bodies 1a and 1b are raised by a raising machine 8 to form independent raised hairs 3 (FIGS. 10A and 10B).
reference). Then, by raising the entire outer surface of both cloth-like bodies 1a and 1b, the multilayer structure woven or knitted fabric shown in FIG. 11 is completed.

As a method of manufacturing this woven or knitted material, it is also possible to apply the method of sequentially forming the loop portions 7 to form the raised surface 4 as described above. By doing so, the raising machine 8 is not required, which can contribute to the reduction of equipment and the number of manufacturing steps.

However, according to this woven or knitted material, both surfaces (raised surfaces 4, 4) are soft and have a smooth touch. Further, since a large number of loop-shaped raised hairs 10 are densely present on both sides, it is particularly effective as an air filter or a liquid filter material.

Next, FIGS. 12 and 13 show a fifth embodiment, in which the multilayer structure woven / knitted fabric has a large number of independent naps having a cut tip portion on the outer surface of one cloth-like body 1a. 3 ...
And a nap surface 4 formed by a large number of looped naps 10 ...
It is what That is, as shown in FIG. 13, the cloth-like body 1
Looped nap 10 which is napped in a loop with the thread 6 of a.
, And independent raised hairs 3 having a cut tip portion are formed. (Independent raised 3 and looped raised 10 are mixed.)

Although not shown, both cloth-like bodies 1
The outer surfaces of a and 1b may be raised surfaces 4 and 4 formed by a large number of independent raised hairs 3 having cut tip portions and a large number of looped raised hairs 10. By doing so, a large number of independent raised hairs 3 ... And looped raised hairs 10 ... Are densely present on both sides, which is particularly effective as an air filter or a liquid filtering material. It may also be preferable to trim the tips of the looped naps by shirring.

Further, the present invention can be modified in design other than the above-mentioned embodiments, and in addition to the knitted fabric formed by the double Russell machine as described above, it is also preferable that the fabric is formed by a loom.

[0049]

Since the present invention is constructed as described above, it has the following great effects.

According to the multi-layer structure woven or knitted fabric of claim 1,
It has excellent cushioning properties and can be used as a substitute for urethane as a cushioning material. In addition, since the surface is soft (because of the raised surface 4) and has a good feel to the touch, and since it has excellent moisture absorption and sweat absorption properties, it can be used as a tool for body protection or sports equipment. Further, since the tissue is dense due to the independent raised hairs 3, it can be used as an air filter or a liquid filtering material. Further, according to the multi-layer structure woven or knitted fabric of claims 2 and 3, the same effect as that of claim 1 can be obtained.

According to the method for producing a multi-layer structure woven or knitted fabric of claim 4, the multi-layered structure woven or knitted fabric of claim 1 or 2 can be easily produced. In particular, independent brushing 3 ...
The loop-shaped raised hair 10 can be surely raised.

According to the method for producing a multi-layer structure woven or knitted fabric according to the fifth aspect, the multi-layer structure woven or knitted fabric according to the first or second aspect can be easily produced. In particular, since a raising machine is not required, it is possible to contribute to the saving of equipment and reduce the number of manufacturing steps.

[Brief description of drawings]

FIG. 1 is a sectional view showing a first embodiment of the present invention.

FIG. 2 is a simplified enlarged sectional view.

FIG. 3 is an enlarged sectional view of a main part.

FIG. 4 is an enlarged perspective view of a main part.

FIG. 5 is an enlarged perspective view of an essential part for explaining the manufacturing method.

FIG. 6 is an enlarged perspective view of an essential part for explaining the manufacturing method.

FIG. 7 is a sectional view showing a second embodiment.

FIG. 8 is a sectional view showing a third embodiment.

FIG. 9 is an enlarged perspective view of a main part.

FIG. 10 is an enlarged perspective view of an essential part for explaining the manufacturing method.

FIG. 11 is a sectional view showing a fourth embodiment.

FIG. 12 is a cross-sectional view showing a fifth embodiment.

FIG. 13 is an enlarged perspective view of a main part.

[Explanation of symbols]

 1a cloth-like body 1b cloth-like body 2 space thread 3 independent raising 4 raising surface 7 loop part 8 raising machine 10 raising loop S S predetermined interval

Claims (5)

[Claims] 1. A pair of cloth-like bodies 1 arranged in parallel with each other.
and a space yarn 2 which is sewn back and forth between a pair of the cloth-like bodies 1a and 1b and supports the cloth-like bodies 1a and 1b at a predetermined interval S. A multi-layer structure woven or knitted fabric characterized in that the outer surface of at least one of the cloth-like bodies 1a is a raised surface 4 formed by a large number of independent raised hairs 3 having cut tip portions. 2. A pair of cloth-like bodies 1 arranged in parallel to each other.
and a space yarn 2 which is sewn back and forth between a pair of the cloth-like bodies 1a and 1b and supports the cloth-like bodies 1a and 1b at a predetermined interval S. A multilayer structure woven or knitted fabric characterized in that the outer surface of at least one of the cloth-like bodies 1a is a raised surface 4 formed by a large number of loop-shaped raised hairs 10 ... 3. A pair of cloth-like bodies 1 arranged parallel to each other.
and a space yarn 2 which is sewn back and forth between a pair of the cloth-like bodies 1a and 1b and supports the cloth-like bodies 1a and 1b at a predetermined interval S. The outer surface of at least one of the cloth-like bodies 1a is a raised surface 4 formed by a large number of independent raised hairs 3 having cut tip portions and a large number of looped raised hairs 10. A multi-layered woven or knitted fabric characterized by: 4. A pair of cloth-like bodies 1 arranged parallel to each other.
and a space yarn 2 which is sewn back and forth between a pair of the cloth-like bodies 1a and 1b and supports the cloth-like bodies 1a and 1b at a predetermined interval S. A method of manufacturing, comprising at least one of the cloth-like bodies 1a
Overrun the bobbin thread 6 to make a large number of loops 7
Are sequentially formed, and then the loop portions 7 are raised by a raising machine 8 to form a raised surface 4, which is a method for producing a multi-layer structure woven or knitted fabric. 5. A pair of cloth-like bodies 1 arranged parallel to each other.
and a space yarn 2 which is sewn back and forth between a pair of the cloth-like bodies 1a and 1b and supports the cloth-like bodies 1a and 1b at a predetermined interval S. A method of manufacturing, comprising at least one of the cloth-like bodies 1a
The method for producing a multi-layer structure woven or knitted fabric, comprising: forming the raised surface 4 by sequentially forming a large number of loop portions 7 ...