JPS63264956A - Special interlaced cloth - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a special entangled fabric comprising inelastic fibers and elastic fibers.

[Conventional technology]

In recent years, sports clothing, 9 work clothing, and medical base materials.

Stretchability of fabrics is required in the field of assets and the like, and several techniques have been provided.

For example, JP-A-60-2273, JP-A-61-552
No. 48, etc. disclose a method of laminating and bonding an elastic fiber web and an inelastic fiber web, or a method of simultaneously melt-blowing and bonding elastic fibers and inelastic fibers, and furthermore, JP-A-61-2.
No. 89163 discloses a method in which elastic fibers are interposed in an intermediate layer and inelastic fibers are arranged on two front and back sides.

However, the nonwoven fabrics obtained by either method have weak entanglement strength between fibers, uneven adhesion of elastic fibers surrounding inelastic fibers, and it is difficult to needle-punch laminated nonwoven fabrics to increase product strength. If so, the entanglement of the inelastic fibers becomes strong.

It is difficult to fully exhibit the elasticity possessed by elastic fibers. Therefore, it is difficult to stably supply products with well-balanced quality and high added value.

Naturally, its use will be limited. Moreover, in each of the above-mentioned solutions, the manufacturing process becomes complicated and is extremely disadvantageous economically.

[Problems to be solved by the present invention]

The present invention provides a fabric using inelastic fibers and elastic fibers,
The purpose of the present invention is to provide a special entangled fabric that solves all of the above-mentioned quality and economic disadvantages that could not be solved using conventional techniques.

[Means for solving problems]

The present inventors have finally arrived at the present invention as a result of intensive research to solve the above problems.

That is, the gist of the present invention is as follows.

(1) A nonwoven fabric-like intertwined portion formed by interlacing inelastic fibers and elastic fibers, and the same fibers forming the nonwoven fabric-like entangled portion are formed by being pulled out substantially in a bundle in the thickness direction of the fabric. A special entangled fabric characterized in that it is a fiber entangled body having a knitted fabric-like loop-like entangled portion at the same time.

(2) The special entangled fabric according to claim 1, in which the fiber entanglement body has elastic fibers or elastic fibers and inelastic fibers substantially bonded to each other.

(3) Ratio of inelastic fibers/elastic fibers is 30/70 ~
90/10% by weight of the special entangled fabric according to claim 1.

(4) The special entangled fabric according to claim 1, which is a thermoplastic polyurethane elastomer having an elastic fiber strength of 5 denier or less.

Below, nine aspects of the present invention will be explained in detail.

The present invention derives from the uniqueness of the intertwined structure composed of inelastic fibers and elastic fibers. It has a highly sophisticated three-dimensional entangled structure that is completely different from the conventional entangled structure obtained by mixing inelastic fibers and elastic fibers and using needle punching, high-speed fluid spraying, or knitting machines. . That is,
It is neither a mere non-woven structure nor a mere knitted fabric structure, but has a non-woven fabric-like entangled structure in one side portion of the fabric, in which the fibers are a moderate mixture of inelastic fibers and elastic fibers.

On the other side, the mixed fibers are essentially pulled out in a bundle, creating continuous knitted-like loop-like entanglement in one direction, and these entangled structures are also three-dimensionally intertwined. It forms a unique entangled structure. Given this structure, the fibers have a high degree of freedom in bending despite being highly three-dimensionally entangled, and are flexible, have appropriate resilience and stretchability, and have sufficient strength and abrasion resistance to withstand practical use. The product is what you get.

On the other hand, in order to achieve elasticity using the conventional needle punching method, the needle density must be lowered to relieve the entanglement of the inelastic fibers and take advantage of the elasticity of the elastic fibers. As a result, the finished product has a lower abrasion resistance (1 strength), and conversely, the needle density is increased (which improves the degree of entanglement and the abrasion resistance).

Although the strength was improved, the elasticity was decreased.

In order to further improve the strength and abrasion resistance of the special entangled fabric of the present invention, it is preferable that the elastic fibers or the elastic fibers and inelastic fibers in the fabric are substantially bonded to each other. Adhesion here refers to a range from the extent that the bonded portion can be separated by ff111 with a slight external force to a completely fused state.

When the elastic fibers in a blended fabric obtained by the conventional needle punching method are bonded together, the inelastic fibers have a low degree of bending freedom, resulting in a paper-like appearance with improved strength and abrasion resistance but reduced flexibility. However, the special entangled fabric of the present invention has a knitted-like loop structure in which a mixture of inelastic fibers and elastic fibers is pulled out into bundles in the thickness direction of the fabric. Because of this, it maintains its strength and strength without losing its elasticity and flexibility even after adhesive treatment.
! A product with improved wear resistance can be obtained.

In the present invention, the blending ratio of inelastic fibers/elastic fibers is 3
0/70 to 90/10% by weight is preferred.

More preferably 40/60 to 80/20 double leaf% 0
If the mixed fiber ratio of elastic fibers is less than 10% by weight, it will be difficult to obtain sufficient elasticity and abrasion resistance, and if it exceeds 70% by weight, elasticity will be obtained, but the rubber elasticity will become strong. A texture.

This is not preferable because the appearance quality is degraded. Further, the denier of one elastic fiber is preferably 1.5 denier or less in consideration of flexibility, uniform blending with inelastic fibers, ease of adhesion, etc.

The inelastic fibers used in the present invention are polyesters such as polyethylene terephthalate and copolymers mainly composed of these, polybutylene terephthalate and copolymers mainly composed thereof.

Polyamides such as nylon 6.12.66 and other copolymers, polyolefins such as polypropylene and polyethylene, acrylic polymers, polyvinyl alcohol,
Copolymer polyvinyl alcohol, polyphenylene sulfide, natural fibers.

For example, semi-synthetic fibers such as cotton, silk, linen, wool, etc.

Examples include diacetate and triacetate fibers, regenerated fibers such as viscose rayon, cupro, and the like.

On the other hand, the first elastic fiber is polyester elastomer,
Examples include those having elasticity such as polyamide elastomers, polyurethanes, acrylic elastomers, diene polymers, and copolymers thereof. Among these, polyurethane fibers are preferably used from the viewpoint of the stretchability of the fabric.

The cross-sectional shape of the inelastic fiber 9 elastic fiber used in the present invention is not particularly limited, and any shape can be used.

The method for producing the special entangled fabric of the present invention will be explained in more detail below using specific examples.

Polyethylene terephthalate staples, polyurethane as an island component, and polystyrene as a sea component, polymer interlayer fiber staples are mixed in a cotton opening machine to create carded fibers.
A web is created by passing through cross rough par M/C. The web is passed through a sewing machine with a marimo-type stitch yarn guide needle.The stitch yarn guide needle is not a needle punch needle that is normally used to push fibers in one direction, but in principle, the needle tip is It has a structure similar to what is generally called a bellows needle.

Therefore, the needle sticks from one side of the mixed fiber web in the thickness direction of the web, catches the fibers forming the web at a certain depth as a bundle, and pulls them out again in the same direction into a loop (old loop). ) to form.

The needle is again inserted through the old loop in the thickness direction, catching the web-forming fibers substantially in the form of a bundle at a certain depth, and drawn through the old loop again to form a stitch. Since this operation is repeated in the entire width direction of the sewing and knitting machine, a knitted fabric-like loop that is continuous in the vertical direction is formed on one side of the fabric, and a tangled body in which a nonwoven fabric-like portion remains on the other side is obtained. Then, depending on the case, this entangled body may be subjected to needle punching as it is, more preferably commonly used, and then subjected to a thinning treatment of the polymer mutually arranged fibers to form the special entangled body having the unique entangled structure of the present invention. A composite fabric is obtained.

This special entangled fabric can be bonded to elastic fibers using a known adhesive technique 9, such as a heat pressurization method, a hot air pressurization method, a high frequency method, or a combination of these methods, to create a special entanglement fabric with superior physical properties. It can be made into a composite fabric.

〔Example〕

The present invention will be explained in detail below using Examples.

The present invention is not restricted or limited by these Examples. Rather, it brings about first-order applied development.

Example 1 A staple (1) of polymeric mutually arranged fibers (16 islands) to obtain the ultrafine elastic fibers shown below and a polymeric mutually arranged fiber (16 islands) to obtain the ultrafine inelastic fibers shown below. )
Staple (n) to t! ” (tHshita.

Staple ([) Sea component (A): Polystyrene (2 varieties manufactured by Asahi Dow Island component (
B): Thermoplastic polyurethane (9 types E995 manufactured by Nippon Elastolan) Ingredient ratio: B/A = 50150% by weight Composite fineness
: Approximately 6. l d Island component fineness: Approx. 0.19 d Island component strength: 1.28 g/d Island component elongation: 412% Fiber length: Approx. 5111 Ken ring number: Approx. 11 peaks/in Stable (II) Sea component (A ″): Polystyrene (2 types 679 manufactured by Asahi Dow)
) Island component (B'): Polyethylene terephthalate component ratio with intrinsic viscosity 0.71 2B'/A' = 57/43ffl amount% Composite fineness: Approx. 3.8 d Island component fineness: Approx. 0.13 d Fiber length: Approx. 51n Ken ring number: about 12 threads/in Stable (1')/(n) was mixed at 100/40% by weight and passed through a cotton opening machine and card/cross wrapper M/C to create a web. Next, this web was stitched using a Marimo sewing and knitting machine (stitch length 1) having a yarn guide needle.
．． 51m, mechanical gauge 18), speed 0.9m
/min and then.

Needle punching was performed so that the needle density was 500 needles/d, and a fiber sheet with a basis weight of 204 g/rrr was obtained.

On the other hand, as a comparative example, a fiber sheet was prepared by punching the web before being applied to the above-mentioned sewing and knitting machine using the needle punching method so that the needle density was 500 needles/ct. Then,
These fiber sheets are processed using trichlorethylene,
The sea components of stables (1) and (■) were removed, the island components were made extremely fine, and then dried.

The thus obtained special entangled fabric of the present invention has a nonwoven fabric-like entangled portion formed by intertwining ultrafine inelastic fibers and ultrafine elastic fibers, and the same fibers forming the nonwoven fabric-like entangled portion in the thickness direction of the fabric. It had a knit-like loop-like intertwined portion formed by substantially being pulled out into a bundle, was flexible, had appropriate pasocability, and was strong and had excellent abrasion resistance. On the other hand, the fabric obtained by the needle punching method named s was flexible, but was inferior in 1yfI force and abrasion resistance and had high residual strain compared to the fabric of the present invention.

Example 2 The special entangled fabric of the present invention obtained in Example 1.

It was passed through two metal rolls with a surface temperature of 140°C and subjected to pressure bonding treatment. Although the resulting product was slightly less flexible than Example 1, it was a fabric with improved strength and abrasion resistance.

Example 3 A stable of polymer mutually arranged fibers (36 fibers) was prepared for obtaining the ultrafine inelastic fibers shown below.

Sea component (A): Hot water soluble polyester (polyethylene terephthalate/isophthalic acid/polyethylene glycol copolymer) Island component (B): Polyethylene terephthalate component ratio with intrinsic viscosity 0.71: B/A=80/20 by weight % Composite fineness: Approximately 3.8 d Island component fineness: Approximately 0.08 d Fiber length: Approximately 5111 Ken ring number: Approximately 10 threads/in Stable described above/Stable used in Example 1 (1)
The fibers are mixed at 100/64% by weight and opened using a cotton opening machine.

A web was created by passing it through a card/cross wrapper M/C, and it was passed through a sewing and knitting machine in the same manner as in Example 1.

Then, it was passed through hot air for shrinkage treatment. Next, the bielastic fibers were subjected to ultra-fine treatment using trichlorethylene and dried. Next, pass it through a metal roll in the same manner as in Example 2,
Pressure adhesive treated. after that.

Wash in hot water at 100℃ using a circular dyeing machine.

It was dyed brown using disperse dye.

The product thus obtained had better strength and abrasion resistance than the fabric obtained in Example 1. In addition, it was a softer brown-colored Vigue suede than the fabric obtained in Example 2.

〔Effect of the invention〕

The special entangled fabric of the present invention has a high degree of three-dimensional entanglement of inelastic fibers and elastic fibers, is flexible, has appropriate resilience and elasticity, and has excellent abrasion resistance. In addition, even in the low basis weight region, it has a high degree of three-dimensional entanglement, so it is extremely superior. Furthermore, after the adhesive treatment, the surface of the fabric can be embossed or grained to produce a product with higher added value.

The special entangled fabric of the present invention is completely different from conventional artificial leather manufacturing techniques, and is economical and free of complications.

Claims (4)

[Claims] (1) A nonwoven fabric-like entangled portion formed by interlacing inelastic fibers and elastic fibers, and the same fibers forming the nonwoven fabric-like entangled portion are formed by being pulled out substantially in a bundle in the thickness direction of the fabric. 1. A special entangled fabric characterized by being an entangled fiber body having a knitted fabric-like loop portion at the same time. (2) Claim 1 in which the tangled fibers are substantially bonded between elastic fibers or elastic fibers and inelastic fibers.
The special entangled fabric described in section. (3) Ratio of inelastic fibers/elastic fibers is 30/70 to 9
The special entangled fabric according to claim 1, which has a content of 0/10% by weight. (4) The special entangled fabric according to claim 1, wherein the elastic fibers are thermoplastic polyurethane elastomers of 1.5 denier or less.