JPS60215836A - Production of polyester spun fabric - 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 <Industrial Application Field> The present invention relates to a method for producing polyester spun fabrics.

<Relationship with conventional technology> Fabrics woven using conventional spun yarns such as conventional 1 cotton yarn, 100% regular polyester yarn, polyester cotton blend yarn, etc. that do not take special consideration of heat shrinkage characteristics, using shuttleless looms such as air jet looms and rapier looms. Compared to the fabric woven using a shuttle loom, the texture and texture of the fabric was inferior, and the quality of the fabric was poor. That is, in the plain woven fabric, the reed marks (lead marks) were noticeable, and in the twill woven fabric, the twill visibility was poor. In addition, the texture of the fabric was paper-like.

This is because shuttleless looms have particularly high warp and warp tension (twice as high as those with shuttles), compared to shuttled looms.
This is because the opening amount is small, and in the curved structure at the intersection of the warp and weft, the warp hardly shrinks while the weft shrinks, resulting in poor texture. In addition, spun yarn is
Compared to filament yarn, the water production shrinkage rate and dry heat shrinkage rate are lower, so there is less change in the amount of injection during post-processing, so the texture of the gray fabric described above, such as poor drapability, is not corrected and can be finished as is. It has fallen on processed textiles.

<Objective of the Invention> The object of the present invention is to improve the drawbacks of the prior art, and to correct the poor texture and poor texture due to tension distortion that occur when polyester spun yarn is woven using a shuttleless loom, by scouring in post-processing, A method for producing textiles that improves texture and feel by changing the amount of warp and weft yarns through relaxation, and that even when polyester spun yarn is woven on a shuttleless loom, it has the same quality as when woven on a shuttled loom. Our goal is to provide the following.

<Structure of the invention> The present invention has a water production shrinkage rate of 3% to 12% and a temperature of 170°C.
A polyester spun yarn having a dry heat shrinkage rate of 5% to 15% is woven on a shuttleless loom using a warp and/or weft, and then a relaxation treatment,
This is a method for producing polyester spun fabric that is dyed and finished.

In the present invention, specifying the water production shrinkage rate and dry heat shrinkage rate of polyester spun yarns is important because fabric defects that occur during weaving on a shuttleless loom can be corrected by changing the amount of warp and/or weft yarns in the post-processing process. This is a necessary requirement to correct fabric defects and improve texture and texture. In other words, the water shrinkage rate of BOLIES, chill spun yarn is 3 to 12%.
, it is necessary to have a heat shrinkage characteristic with a dry heat shrinkage rate of 5 to 15% at 170°C, and particularly preferred is a 1 boiling water shrinkage rate of 5 to 10% and a dry heat shrinkage rate of 7% at 170°C. ~12%. If the water production shrinkage rate of polyester spun yarn is 3% or less and the dry heat shrinkage rate is 5% or less, there will be little change in the width and length directions in the post-processing process, resulting in improved texture and texture. On the other hand, if the water production shrinkage rate is 12% or more and the dry heat shrinkage rate is 15% or more, the change in the amount of pouring in the width direction and length direction due to the post-processing process is too large. Strong sense of stiffness (1) Fabrics lacking drapability and poor texture (0) In addition, in the present invention, the gray fabric is heat-shrinked in one post-processing process, so it is preferable to take this into consideration in advance when designing the fabric. That is, it is necessary to increase the length of the gray cloth by the amount of shrinkage compared to the length of the finishing cloth. Therefore, it is preferable that the density of the gray cloth is made coarser in advance by the amount of change in the pouring amount. In reality, it is necessary to design the green density 10% to 15% coarser than the finished density. The number of twists, count, etc. of the polyester spun yarn may be any.

Using the polyester spun yarn as the warp and/or weft, a gray fabric is woven using a shuttleless machine such as an air jet loom or rapier loom. The gray fabric is subjected to a relaxing scouring treatment using a continuous relaxer or rotary washer having a beating effect, a jet dyeing machine, or the like.

Preferably with a rotary washer, jet dyer, etc.
OO" The texture is improved by relaxing scouring at 0 to 110℃ for 50 to 60 minutes. After that, the texture is improved.
Perform staining at °C. After relaxing and scouring, the cloth is spread in the warp and weft directions to the extent of smoothing out wrinkles and preset. After presetting, perform one-time dyeing with a reduction process if necessary.
Finish by processing the finishing set.

<Effects of the invention> Lead marks and poor twill appearance that always occur when weaving with an innovative loom are made less noticeable by the change in pouring amount caused by heat treating the raw yarn, and the fabric is improved. At the same time, drapability and other textures are also improved.

In addition, even with the shuttleless wire 1, the fabric quality comparable to that of a shuttled loom can be obtained, so the quality yield is improved and costs are reduced.

<Examples> The present invention will be described below with reference to Examples, but the present invention is not limited to these Examples.

Example L Round section prite Polyester cut fiber 1.5
Denier 38fi (7% water shrinkage, 9% dry heat shrinkage)
A spun yarn of 50'a/l was obtained using the following method. The raw yarn is used as the warp and weft, and the warp density is 1 in the air jet loom.
A plain woven gray fabric with a weft density of 53 threads/inch and a weft density of 80 threads/inch was woven. Gray fabric is 126c+m, length is 124
．． It was 5■. The gray fabric was subjected to a relaxing scouring process using a high-pressure rotary washer for 60 minutes in llo'ox, and then dyed using a Thermeku dyeing machine. Finishing 113 cII
When finished to a finishing length of 111.5 II, a habutae-like fabric with no reed marks and excellent drape was obtained.

Example 2 Round section plyte polyester cut fiber 0.7 denier, 38 gm (water production shrinkage rate 6%, dry heat shrinkage rate 8%)
A spun yarn of 60'II/l was obtained using the following method. Using the yarn as the warp and weft, the warp density is 1 using a rapier loom.
A plain woven gray fabric with a weft density of 60 threads/inch and a weft density of 90 threads/inch was woven. Gray fabric is 125 (2), length is 1241
It was 11. The gray fabric is dyed using a circular dyeing machine.
'1) A relaxing scouring process was performed for xa and o minutes, and after presetting, it was dyed with a liquid jet dyeing machine and finished. During finishing, the finished length was 113 cm1 and l l 1.5 +s. The resulting fabric had improved texture, was soft and had a habutae style fabric with excellent drapability.

Comparative example Round cross-section bright polyester cut fiber 1.5 denier 38 gull (water production shrinkage rate 1%, dry heat shrinkage rate 2.8%)
A 50'8/1 spun yarn was obtained using the following method. The raw yarns were used as warp and weft yarns to weave a plain woven gray fabric with a warp density of 16JE threads/inch and a weft thread density of 82 threads/inch in an air jet loom. The raw material is 119.5 history,
The length was 121.5+a. The gray fabric was subjected to a relaxing scouring treatment at 110° C. for 60 minutes using a high-pressure rotary washer, and then dyed using a circular dyeing machine. During finishing, it was 115e+m and the length was 1121.

The resulting fabric had noticeable lead marks and had a paper-like texture compared to Example 1.

Patent applicant: Toyobo Co., Ltd.

Claims (1)

[Claims] Using a polyester spun yarn having heat shrinkage properties of a water production shrinkage rate of 3% to 12% and a dry heat shrinkage rate of 5% to 15% at 170°C for the warp and/or weft,
A method for producing polyester spun fabrics, which is characterized by weaving on a shuttleless loom, followed by relaxing scouring and dyeing finishing.