JPS6155261A - Production of polyester velvet improved in fastener phenomenon - 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 method for installing a polynisder velvet device with improved zippering properties.

(Prior art) Velvet fabric has a unique surface luster and elegant texture.
Since it exhibits a deep hue, it has been used for women's clothing, coats, shawls, hats, and interior applications. Rayon, acetate, cotton, silk, etc. have been mainly used as materials for velvet, but recently, 100% synthetic 41F [used velvet] has been used, taking advantage of the advantages of synthetic fibers such as dimensional stability, easy care, and high strength. was developed. However, with velvet made from polyester fibers, the heat generated when the pile section is cut causes the cut surface of the pile yarn to take on the shape of a nail head, and this shape causes the fastening phenomenon that occurs when the pile surfaces of velvet are overlapped. (The pile part becomes vI!, a phenomenon in which it becomes difficult to separate), so the actual situation is that it has not been developed for clothing or interior use. With natural fibers, acetate, etc., the pile cut surface is round and smooth, and the fastener phenomenon does not occur. It is thought that the shape of the nail head on the cut surface of the pile, which is the cause of the fastener phenomenon, may be improved by improving the cutting cutter, but this has not been resolved at this stage.

(Problems to be Solved by the Invention) As a result of intensive study on the production of velvet made of polyester TA fibers free from the above-mentioned drawbacks, the present invention has found that the nail head shape of the pile yarn disappears before the striping process. We have found a specific alkaline bath treatment that can be used.

(Means to solve the problem) Reduce the amount of alkali metal or alkaline earth metal hydroxide.
ck Improvement of the fastener phenomenon characterized by dyeing after reducing the market by at least 1% by heat treatment at 100 to 140°C in a bath containing at least 0.1% by weight A method for producing polyester velvet.

In the present invention, the hydroxides of alkali metals or alkaline earth metals include potassium hydroxide, sodium hydroxide, lithium hydroxide, cesium hydroxide, barium hydroxide, strontium hydroxide, calcium hydroxide, magnesium hydroxide, etc. can give.

Among them, tutorium hydroxide is preferably used because it decomposes the surface of polyester fibers, has a large ftl reduction effect, and is inexpensive. The concentration of the alkali metal or earth group hydroxide necessary to eliminate the nail head shape on the cut surface of the pile yarn is at least 0.1f [1ffi% or more]. Preferably sodium hydroxide is 0.2 to 2.0
Heavy i! A dk body containing 1% is used. These temperatures are considerably lower in concentration than conventional alkali reduction processes. With this low-temperature alkaline solution, it is possible to eliminate the nail head shape at the pile yarn cutting opening. The treatment in an alkaline bath is preferably carried out at a high temperature of 100° C. or higher. More preferably, the temperature is 110 to 130°C. If the temperature is below 100°C, the effect of reducing the weight of polyester fibers is small, so in order to round the cut surface of the pile yarn, alkali metal or alkaline earth metal hydroxide with a very high degree of a is required. Since it is excessive compared to the amount necessary for alkaline decomposition of the nail head shape of the cut surface of the pile yarn, the weight of the velvet base fabric as a whole is reduced, and physical properties are deteriorated due to excessive weight loss. On the other hand, temperatures exceeding 140° C. are undesirable because the heat treatment temperature is too high, which affects the fiber's texture, physical properties, dimensional changes, and dyeability.

To eliminate the zipper phenomenon, at least 1% or more
Preferably a debt reduction of 2-8% is required.

This figure is an extremely small reduction in velvet as a whole.
However, due to the characteristic behavior that the reduction occurs selectively at the pile tip, the purpose of rounding off the nailhead-shaped portion of the pile tip is fully achieved.

One of the methods for preferably achieving the present invention is to treat the pile with alkali H1 necessary for rounding the nail head-shaped portion of the pile to be reduced.
! [It is to make a bath.] A summary of the dosage of the normal method part 1! ]! The density set based on the ring spacing is applied. More preferably, all the alkali in the treatment bath is
It is to spend money. For that purpose, IN: tp1lli product quality! 1 is selected.

For example, in the case of velvet with a mesh of 300 g/m'', the nails can be treated at 130°C for 20 minutes in a treatment bath consisting of an alkaline aqueous solution of 0.2 to 0.4'!i) at a bath ratio of 1:30. Only the head shape can be selectively rounded.

In addition to the above-mentioned hydroxides of alkali metals or alkaline earth metals, it is also preferable to add a dipping agent, and it is also possible to appropriately add ordinary desizing agents, scouring agents, and the like.

The treatment with the alkaline solution of the present invention is the same in terms of its mechanism of action, but considering the effect on dyeing properties, it is customary to perform it before the dyeing process, also as a scouring and glue treatment. .

Polyester uA fibers are polyethylene terephthalate, polybutylene terephthalate, and polyethylene terephthalate copolymers (isophthalic acid.

Examples include sodium isophthalate sulfonate, etc.).

(Function of the invention n-groove) It was discovered that the fastener phenomenon of velvet made of polyester #Ii cloth is due to the shape of the cut surface of the pile yarn.
Furthermore, if the rate of deburr reduction due to alkali treatment is stopped at a very low level, only the nail head-shaped portion, which is the main cause, will be selectively decomposed.

Alkaline treatment with consistent reduction rate is possible only by high temperature treatment of 100'C or more in a bath with a lower concentration than conventional alkali reduction.

(Example) Actual hm 1 row 1 Vile I% 1.6 mm polyester velvet fabric (
1:llt: 280g, /ln') at 195°C
It was dyed for 30 seconds.Then, it was treated in an alkaline bath under the following conditions.A normal high-temperature dyeing process was carried out.

Rice treated in alkaline bath! t: 1; Sanded G29: Sanyo Chemical Co., Ltd., processing temperature,
Time: 80°C x 20 minutes, 110°C x for each treatment bath A-D
The treatment in an alkaline bath for 20 minutes at 130° C. for 20 minutes and the dyeing process were carried out using a jet dyeing machine (Zercular). After the alkali treatment, the samples were washed with water and neutralized with acetic acid before dyeing.

Staining was performed at 130''CX for 60 minutes, followed by reduction washing.

Finish setting was carried out at 180° C. for 20 seconds, and the zipper phenomenon of the obtained velvet fabric was evaluated. F7・
The snar phenomenon was compared by overlapping the pile surfaces of velvets processed under the same conditions and comparing the magnitude of the peel strength after applying -Takarazen in. As shown in Table 1, it was confirmed that the velvet processed under the alkali treatment conditions of the present invention had a significantly improved zipper phenomenon, and the value was close to that of velvet made of acetate, in which the zipper phenomenon was not a problem.

Table 1 Sample: Two sheets of velvet with a width of 5 cm and a length of '15 cm were stacked together and a layer of 1.0-r: J'J'' was applied evenly for 10 minutes. Tensile speed: 10cm/min Whether or not there is a hun-sunner phenomenon: Judgment of congratulatory feeling by overlapping the bail surfaces (effect of the invention) The fatal zipper phenomenon of velvet made of polyester fibers can be eliminated by a specific alkaline solution. The velvet made of polyester II II according to the present invention has improved the fastener phenomenon in which the pile surfaces adhere to each other, and has realized the development of products for clothing and interior use.

Claims (1)

[Claims] 100-140 in a bath containing at least 0.1% by weight of alkali metal or alkaline earth metal hydroxide.
A method for producing polyester velvet with improved zipper phenomenon, which comprises dyeing the polyester velvet after reducing the weight by at least 1% by heat treatment at .degree.