JPS62170562A - Production of two-way knitted fabric - Google Patents

Abstract

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

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a method for manufacturing a two-way knitted fabric that has suitable stretchability in two-way directions, warp and weft, and by providing such a manufacturing method, It is intended to be used for the relevant industrial use.

<Prior art> As two-way knitted fabrics, for example, fabrics knitted using covering yarns or core yarns with spanden fibers as core yarns have been known. It is knowledge.

On the other hand, warp-knitted fabrics that do not use these elastic fibers and have stretchability in the two-way direction are being considered, but conventionally, the knitting structure only provides stretchability in the two-way direction. There were some areas where the elasticity was insufficient, and especially the elasticity in the longitudinal direction was apt to be overlooked. This is clear when looking at tricot etc.

Means for Solving the Problems The present invention aims to improve such conventional warp-knitted fabrics, and aims to improve such conventional warp-knitted fabrics by using lubricating fibers and achieving suitable stretch in two-way directions without depending on the knitting structure. As a result of repeated studies in order to create a knitted fabric with the desired characteristics, the present invention was finally arrived at.The main feature of this invention is that it is warp-knitted using bulky yarn that has been sized, and then, The object of the present invention is to manufacture a two-way knitted fabric characterized by being treated with a starch remover.

As described above, the present invention relates to a two-way knitted fabric formed by warp knitting using 1-high yarn, and below, the means for solving the problems of the present invention will be explained in more detail. Explain.

The bulky yarn in the present invention refers to woolly processing (false twisting processing)
Examples include crimped yarns such as denit yarns known as knitting release yarns, and consequential yarns.
Further, examples include puffed yarns that have been subjected to a well-known swelling process, and such bulky yarns may be spun yarns, filament yarns, or other suitable yarns, and of course may be single yarns, double yarns, or more. If so, there are no particular restrictions.

In this case, the preferable bulky yarn is, for example, a woolly-processed silk yarn, and any suitable method may be used to apply the woolly process, but one example is a highly twisted #1 scouring yarn using a silk protein solution. An example of a method is to perform sizing, and then untwist the yarn to such an extent that the remaining twist is, for example, 500 or less (this value is not particularly limited) to obtain a woolly textured yarn. In addition, the above-mentioned puffed yarn that has been subjected to the puffing process is raw silk, and the carving ratio based on the cross-sectional area of the yarn is on average 1. It is preferable that the swelling is higher than the process degree, more preferably 1.2 to 4.0, more preferably 1.4 to 4.0.
Those expanded to about 3.0 are easy to use. In the case of raw silk, such swelling processing can be freely applied to the scouring 1ij yarn or to the scouring yarn.

The material used for the above-mentioned bulky yarn may be cotton, synthetic fiber, or other appropriate material, but in the present invention, silk yarn (including raw silk) is the most preferred example.

Gluing in the present invention is sufficient if it is carried out using a commonly used sizing agent, for example, a natural or synthetic sizing agent, and there is no particular restriction, and the amount of sizing may be appropriate. In order to prevent the threads from adhering to each other, an appropriate softener, smoothing agent, etc. may be added. On this occasion,
When using the woolly textured silk thread described above, silk protein can be used as the sizing agent as described above, and such sizing agent may be applied at any point during the process of creating the woolly textured thread.

Also, degreasing can be done by hot water washing, soaping, etc., but it can also be done at the same time as scouring, dyeing, and finishing.
Even if the glue is not removed, it is sufficient if the glue comes off during the subsequent steps of scouring, dyeing, and finishing. In addition, in the case of hot water washing, preferably 50℃ or higher, if necessary 70~1℃
The soaping may be carried out at a temperature of 00°C, but there is no particular limitation, and the soaping may be carried out by a well-known method by adding an appropriate surfactant or the like, and there is no particular limitation.

As described above, the present invention relates to a two-way knitted fabric formed by warp-knitting using bulky yarn, and warp-knitting here refers to
Examples include single tricot, double tricot, full fansion, and lancet tMjf=9, and there are no particular limitations. In short, there are no particular limitations as long as the warp-knitted structure becomes a knitted fabric that is stretchable in the two-way direction after the size is removed. Further, as the bulky yarn, one made of I) as mentioned above is particularly preferable.

<Example> After applying a strong twist of 3000 times/m to the refined braided yarn 21 x 3 wood, it was immersed in #4 protein solution, and after drying, the weight -r+:
: Sizing was carried out so that the weight increased by about 35% in comparison, and after drying, it was untwisted to an extent that about 300 twists/m remained to produce a woolly textured yarn. The woolly processed yarn created in this way had almost no elasticity due to the action of the glue. Using a woolly processed yarn with a knitting thread, it is warp-knitted using an ordinary single tricot knitting machine, and then 98
After washing with hot water for 5 minutes at ℃ and removing the glue,
A knitted fabric with stretchability in the two-way direction was completed.

On the other hand, the knitted fabric was made by applying the same size to 2 out of 31 ordinary refined braided yarns that have not been subjected to wooly processing, knitting in the same way, and removing the size. There were some aspects that were insufficient in terms of elasticity, especially in the warp direction.

<Effects of the Invention> The present invention is as described above, and it is possible to achieve an unprecedented two-way method by using a bulky yarn for the width without using special glue-like fibers, and by performing in-line operations such as sizing and sizing removal. This method creates a warp knitted fabric that has stretchability in the direction, and there are certain things that are expected in this industry.

In particular, the material is made of silk, for example. °,'5 (The effects of the present invention are most exhibited when high school graduates are used, and this is clear from the description of the examples.

Claims (1)

[Claims] A method for manufacturing a two-way knitted fabric, which is characterized in that warp knitting is performed using bulky yarn that has been sized, and then the size is removed.