JPH0376849A - Multiple layer woven or knitted fabric and its production - Google Patents

Abstract

PURPOSE:To obtain woven or knitted fabric suitable for towel, having excellent feeling of thickness, water absorption properties and stability of form by superimposing clothes having pile fabric on one side using thermoplastic yarn as ground yarn, melting the thermoplastic yarn and bonding. CONSTITUTION:Thermoplastic yarn such as polyethylene terephthalate or polyethylene is used as ground yarn to give knitted pile fabric having piled fabric on one side and comprising pile made of yarn having preferably 0.1-1.5 denier. Then the pile fabrics are superimposed with laying the piled surface outside, the thermoplastic yarn is melted preferably by ultrasonic heating and then the pile fabrics are pressurized and integrated to give the objective woven or knitted fabric.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention provides a multi-woven or knitted fabric that has excellent thickness, is stable in form, and has excellent water absorbency, especially as a substitute for towels and as a substitute for towels. Preferably, the present invention relates to a towel-like multi-woven and knitted fabric suitable for wiping hair after washing, and a method for producing the same.

(Conventional technology) Recently, in the towel field, traditional 100% cotton
As opposed to woven towels consisting of recycled fibers.

Towels made of synthetic fibers are increasing in the market due to their high water absorption, good drying properties, durability, and light weight.

These new types of towels have a variety of fabric applications compared to traditional cotton woven towels, and fabrics such as tricot, raschel, and circular knit fabrics that have not been seen in conventional cotton towels are used to add novelty. ing.

(Problems to be Solved by the Invention) However, traditional cotton towels are often thicker than the fabrics commonly and easily obtained by tricot, russet, and circular knitting. Therefore, using 1 synthetic M fiber etc.

If you are trying to create a fabric yarn that is different from traditional cotton towels, you can use multiple yarns of these fibers.

Post-processing such as raising is required, otherwise the water retention properties will be inferior to traditional cotton towels. However, if doubling or post-processing is carried out, productivity will be significantly reduced.The present invention uses a special method to bond fabrics that are relatively easily manufactured using synthetic fibers, etc. The aim is to easily create a multi-woven fabric with a texture that is comparable to that of traditional cotton towels and has a structure with excellent texture.

(Means for Solving the Problems) The present invention is a multi-woven and knitted fabric in which single-sided pile woven and knitted fabrics having thermoplastic fibers as at least a part of the ground yarn are stacked and integrated with the pile surface facing outward, This is a multi-woven or knitted fabric characterized in that the integration is achieved by dot or linear adhesion by melting the thermoplastic fibers, and as a preferred manufacturing method, the thermoplastic fibers are bonded to at least a portion of the ground yarn. This is a method of stacking single-sided pile woven and knitted fabrics with the pile side outward, melting the thermoplastic fibers by ultrasonic heating, and thereby bonding the two pieces in dots or lines. This is a method in which a pattern is created by the bonded portion (i.e., the pattern is bonded) during bonding using ultrasonic waves.

There are various methods of adhesion and integration, including methods using heated embossing rolls, heating plates, heating needles, high frequency heating, and ultrasonic heating. 1. What method was used in the present invention? However, a method using ultrasonic heating is preferable. That is, thermoplastic fibers can absorb vibration energy caused by ultrasonic waves and can be heated to near the melting temperature, and at this time, by applying appropriate pressure, the thermoplastic fibers are bonded together. This principle is based on 1. For example, Crompton in the United States
&Knowles' PINSONIC-r thin, etc.

The feature of this machine is that a fabric containing thermoplastic fibers is run between an ultrasonic transmitter and a pin or a thin wire element, and is melted and bonded in the shape of a pattern (dot shape or line shape).

Therefore, by arbitrarily selecting the pattern, the bonding area can be changed arbitrarily, and a bonded structure with a supple texture can be manufactured. On the other hand, even with the same adhesive means.

The adhesive method is to use adhesive on the entire surface.

The presence of the adhesive layer makes the texture extremely hard.

In addition, although point adhesion methods that use dot-shaped adhesives have less hardening of texture than full-surface adhesion, it is necessary to cover a relatively large area when adhesive strength is taken into account. , it is difficult to maintain the suppleness necessary for towel use.

Compared to methods using high-frequency waves and methods using heated embossing rolls or heating plates, the method using ultrasonic waves is
Good for non-adhesive parts! It has the advantage of having little undesirable effects (such as hardening) and high productivity.

According to the method of the present invention, the area ratio of the adhesive area to the entire cloth is extremely small, and the adhesive strength can be maintained at a reasonable level, so that the texture is hardly impaired.

According to the present invention, since the adhesive points or adhesive lines form depressions on the surface of the fabric, there is an advantage that a collection of adhesive points or a combination of adhesive lines constitutes a design-like pattern of the housing. . Furthermore, the presence of dents due to the adhesive area creates an appropriate combination of unevenness due to the contrast with the surrounding non-adhesive area, which makes it difficult to use as a towel when used in practical use.
It can also be expected to have the effect of providing a moderate amount of slippage with the skin. Further, due to the effect of adhesion itself, even if a morphologically unstable fabric is used, it is difficult to maintain a stable form after adhesion, and the appearance of the case is also good.

Thermoplastic fibers referred to in the present invention include polyester fibers such as polyethylene terephthalate and polybutylene terephthalate, polyamide fibers such as nylon-6, nylon-61O, and nylon-66, and polyolefin fibers such as polyethylene and polypropylene. Can be mentioned.

Of course, the fibers may be made of a single polymer, or may be so-called composite spun fibers in which two or more polymers form a core-sheath shape, a bimetallic shape, or the like. According to the present invention, such thermoplastic fibers are used in at least a part of the base threads of the woven and knitted fabric, specifically, at least 5 layers of fibers constituting the base threads are thermoplastic fibers. It feels like a good old time.

The pile woven and knitted fabric referred to in the present invention is a fabric that has fluff or traps on one side, and includes fabrics such as velvet weave and coal wood fiber,
Further examples include knitted fabrics such as tricot pile knitting, Raschel cut pile knitting, and circular knitting pile knitting fabrics, but pile knitting fabrics are preferred because they have the elasticity required as a substitute for towels. The fibers constituting the pile are preferably thin from the point of view of water absorption, and are preferably within the range of 1 to 1.5 deniers. The height of the pile is preferably 1 to 5 m in terms of water absorption.

Pile woven and knitted fabrics contain hydrophilic agents to increase water absorption.
For example, it is preferable that a polymer obtained by copolymerizing polyethylene glycol having a molecular weight of 11,000 to 3,000, terephthalic acid, and, if necessary, other glycol components and dicarboxylic acid components, is applied to the surface. The amount applied is 0.5 to 5% by weight based on the woven or knitted fabric. As for the basis weight of pile woven and knitted fabrics.

100-300y/III'' is preferred.

In the present invention, such a pile woven or knitted fabric is used.

Lay the two sheets on top of each other with the pile side facing out. Then, by applying pressure to the melted thermoplastic fibers, the two sheets are integrated. In this case, as mentioned above, they must be integrated in dotted or linear parts. In the case of dot adhesion, the area of one point is preferably 1 to 1o-, and in the case of linear adhesion, the width of the line is preferably Fi1 to 3■! Yes. And, no matter which 10 cIR square part of the pile woven or knitted fabric is turned, dotted or linear adhesive parts are always present, and the area of the adhesive parts is within the range of 0.1-15% of the whole. is preferable in terms of peel strength and flexibility.

In the present invention, two woven or knitted fabrics having piles on one side are overlapped and integrated, but the woven or knitted fabrics to be overlapped may be exactly the same, or may be a combination of different weaving and knitting methods, constituent fibers, basis weight, etc. Good too.

If necessary for the housing, another fabric may be inserted between the two pile woven or knitted fabrics within a range that does not significantly impede the peel strength If.

As mentioned above, it is preferable to bond in the form of a pattern, but the pattern may be a figurative regular pattern or a figurative pattern, such as a pattern of animals, plants, landscapes, etc. You can.

The multi-woven and knitted fabric of the present invention has high water absorption and quick drying properties.

In terms of durability, quantity, etc., it is suitable as a towel substitute and as a substitute for wiping towels after washing your hair.

The present invention will be explained below with reference to Examples.

Example 1 Using a 28-gauge, 9-knit pile machine, processed polyester yarn 75d-36f was used as the ground yarn.

A pile was manufactured using polyester processed yarn 150d-288f and a sinker height of 2.2 m.

This material was dyed at 135° C., and at the same time, water absorption processing was also carried out using 3% (relative fabric weight t) of water absorption processing agent 5SR-500 (J (manufactured by Takamatsu Yushi Co., Ltd.)).

In this way, the width is 1703 and the weight per meter is 260f.
A pile knitted fabric with good water absorption was obtained. However, this fabric
- When used as a towel, it is too flimsy and cannot be used practically as a towel.

Next, put these two knitted fabrics together with the pile side and the opposite side, the so-called ground side, Crompton & Kn
Figure 1.2
．． Three types of adhesive fabrics were manufactured with three patterns. Next, this adhesive cloth was cut to 30 cMX 80 eta, and the periphery was overlocked using a thread, and then used as a towel.

When I used this product to wipe my hair after washing, I found that it had good water absorption and had an appropriate amount of gliding on the hair.

The thickness and flexibility made it extremely easy to use.

Naturally, it also dried quickly after use.

Example 2 Using a 24G nine-knit pile machine, nylon woolly 75d-3Of was grounded with a sinker height of 2.

A pile knitted fabric was prepared using No. 40 cotton single yarn for the pile. Next, it is dyed using a conventional method to obtain a width of 170 cIN.
A pile knitted fabric with a weight per meter of 2502 was obtained.

This item was too flimsy to be used alone as a towel.

Next, when the ground surfaces of this pile knitted fabric were glued together using the same PiNSONIC as in Example 1 and the same pattern as in Example 1, the wall thickness became suitable for a towel and the shape was stable. It became a thing. Also, it has the ability to absorb water as a towel.

It was comparable to traditional cotton woven towels.

[Brief explanation of drawings]

1 to 3 show specific examples of surface patterns of the multi-woven and knitted fabric of the present invention.

Claims (1)

[Scope of Claims] 1. A multi-woven or knitted fabric in which single-sided pile woven or knitted fabrics having thermoplastic fibers as at least a part of the ground yarn are overlaid and integrated with the pile surface facing outward, and the integration is A multi-woven or knitted fabric characterized in that it is made by point-like or linear adhesion by melting thermoplastic fibers. 2. Overlap single-sided pile woven and knitted fabrics with thermoplastic fibers as at least part of the ground yarn with the pile side facing outward, and melt the thermoplastic fibers by ultrasonic heating, thereby bonding the two sheets in dots or forming lines. A method for producing a multi-woven or knitted fabric, characterized by bonding the fabric together.