JPS64519B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a polyester fiber-extracted product rich in design, and more specifically, a method for producing a polyester-based fiber-extracted product that is rich in design, and more specifically, a method for manufacturing a polyester-based fiber-extracted product that is rich in design. Concerning the manufacturing method of the characteristically excavated products.

Conventionally, the method for producing an abrasive product containing polyester fibers involves applying a sizing solution containing an abrasive agent such as aluminum sulfate or sulfuric acid to a fabric made of intertwisted or mixed fiber yarns of polyester fibers and cellulose fibers, or to an interwoven fabric. A method is known in which the cellulose fiber portion is burned out by printing and heat treatment, or a method in which a size solution containing an alkali salt of phenols is printed on the above-mentioned mixed fiber fabric and the polyester fiber is eluted by high temperature heat treatment. ing. However, the use of cellulose fibers has drawbacks such as not being able to provide vivid colors or fastness, making it difficult to represent products with thin fabrics, and not giving the impression of being a luxury product. In addition, in recent years, a method for manufacturing polyester-based fiber-free fabric in which a mixed fabric of regular polyester fibers and modified polyester fibers dyeable with cationic dyes is treated with alkali to dissolve the modified polyester fibers has been studied. As a result, the unmodified polyester fiber side also undergoes dissolution, making it difficult to control the alkali treatment conditions, and the dye tends to discolor when applied to pre-dyed fabrics or when dyeing is carried out at the same time as removal. Not only is there a limit to the design effect that can be obtained by having such a material, but there are also problems in actual production.

The inventor of the present invention has arrived at the method of the present invention as a result of intensive research in order to solve the above-mentioned drawbacks and obtain a polyester fiber-extracted product with a high design effect and commercial value. That is, the present invention has a concentration of 0.2 to 10
A mixed product of an acid metal base-containing polyester fiber obtained by copolymerizing mol% of an acid metal base-containing ester-forming compound and a polyester fiber that does not contain an acid metal salt is treated with an acid to remove the acid metal base-containing polyester fiber. Characterized by urging.

When using the method of the present invention, a removed product made of polyester fibers that is highly functional and aesthetically pleasing can be obtained, processing is easier and more reproducible than the alkaline removing method, and dyed fabric It has features such as being able to solve the problem of discoloration, and allowing sufficient design effects to be expressed with extremely few restrictions on the color dyes used in the removal process in some cases. Moreover, anti-pilling properties and anti-snagging properties can be imparted to the acid-metal-base-free polyester fiber side at the same time as the erosion. Furthermore, when combined with alkali weight loss processing, it has many features such as improved etching processability and the ability to provide a more favorable texture. In addition, by freely combining the filaments and stable of both polyester fibers, for example, mixed fiber yarns,
Mixed twisted yarn, covered yarn (core yarn, covered yarn)
By applying it to used fabrics, mixed knitted fabrics, etc., a variety of extracted products can be obtained. Furthermore, since modified polyester fibers are susceptible to thermal deformation, heat treatment can at least partially fuse the acid metal base-containing polyester fibers and/or the acid metal base-containing polyester fibers and the acid metal base-free polyester fibers. It is possible to achieve slip prevention and to obtain different textures.

The acid metal base-containing polyester fiber (referred to as modified polyester fiber) used in the present invention is an ester-forming compound containing a metal salt sulfonate group, a metal salt phosphate group, or a metal salt phosphonate group, such as sodium sulfoisophthalate. acid, potassium isophthalic acid, sodium dimethyl sulfoisophthalate, sodium sulfonaphthalene dicarboxylic acid, sodium sulfosuccinic acid, sodium P-hydroxyethoxybenzenesulfonate, sulfonic acid metal base-containing glycol, etc., based on the total acid component.
Examples include fibers made from polyester copolymerized with 0.2 to 10 mol%, preferably 0.5 to 7 mol%. The acid group is preferably a sulfonic acid group, and in addition to the sulfonic acid metal group-containing ester-forming compound, a copolymer component such as isophthalic acid or aliphatic dicarbonate is added to the total acid component in an amount of 15 mol% or less, especially 5 to 12 Particularly preferred are alkylene terephthalate polyester fibers copolymerized in mol%.

In addition, polyester fibers containing no acid metal base (usually referred to as polyester fibers) used in the present invention include polyethylene terephthalate, polybutylene terephthalate, polyethylene (terephthalate isophthalate), poly(ethylene butylene) terephthalate, polycyclohexane di Examples include fibers made of ordinary homopolymerized or copolymerized polyesters such as methylene terephthalate, which have higher acid resistance than the above-mentioned modified polyester fibers.

The mixed form of modified polyester fibers and normal polyester fibers is not particularly limited, and mixed yarns made of both fibers, intertwisted yarns, covered yarns (core yarns, covered yarns, etc.), composite false twisted yarns, etc., and yarns thereof are used. Examples include fabrics, mixed woven and knitted fabrics of modified polyester fibers and normal polyester fibers, and the like. The mixed yarn may be untwisted or twisted.
In addition, different colors and different physical properties can be imparted by mixing fibers other than the above-mentioned polyester fibers. It is also possible to mix in a small amount of low melting point fibers to prevent threads or fibers from slipping or falling out.
Further, the fibers may be crimped or false-twisted, colored in advance, mixed with different shrinkage fibers, and may be either filament or stable. The fineness of the modified polyester fiber and the normal polyester fiber may be arbitrary, but it is preferable that the modified polyester fiber has a fineness equal to or less than that of the normal polyester fiber, but the modified polyester fiber has a cross-sectional shape with a large surface area such as deformed, hollow, or oblate. In this case, better results can be obtained with modified polyester fiber even if it has a thicker denier. Further, it is also preferable to carry out an alkali weight loss process prior to the etching process to reduce the weight of the modified polyester fibers to a greater degree, and to make the fibers finer in denier. The weaving and knitting structure of the fabric is not particularly limited, and may include non-woven fabric,
They range from plain weave to dobby and fabrics with patterns on the surface using jiyaguard.

In the present invention, the modified polyester fibers are usually treated with acid in the form of threads and/or fabrics to dissolve or embrittle and remove the modified polyester fibers. The acid used is sulfuric acid,
Examples include aluminum sulfate, zinc sulfate, ferric ammonium sulfate, ammonium sulfate, acidic sodium sulfate, acidic potassium sulfate, aluminum chloride, and zinc chloride, which may be used alone or in combination of two or more. Further, the above-mentioned acid can be used in combination with an organic acid, an oxidizing agent, etc., to promote the removability. As a treatment method, an aqueous liquid containing an acid, a thickener such as gum arabic or gum tragacanth, and optionally an auxiliary agent is usually applied by any method such as padding, printing, etc., followed by heat treatment, preferably high pressure steaming or high temperature. The modified polyester fibers are steamed to dissolve or become brittle, and if desired, further washed with water and removed by the kneading effect in the neutralization step.
Although it is preferable to perform an alkali reduction process prior to etching to obtain an improved hand and improve the etching effect, an alkali treatment may be performed after the etching to completely remove the brittle portion. Before extraction and/
Alternatively, anti-pilling treatment, napping treatment, dyeing or printing (including anti-discharge printing), resin processing, etc. may be performed as desired after the extraction process, or dyes may be added to the extraction paste solution for printing at the same time as the extraction process. You can also do that. It is also possible to imprint an anti-corrosion adhesive that imparts acid resistance prior to etching.

After removal, the modified polyester fibers are washed and heat treated for a short time, for example at 170°C or higher, particularly preferably at 190-240°C, to bond the modified polyester fibers together and/or
Alternatively, it is preferable to at least partially adhere the modified polyester fibers and the normal polyester fibers to prevent slips or fibers from coming off.

The present invention will be explained below with reference to Examples. In addition,
% in the examples means % by weight.

Example 1 Polyethylene terephthalate filament yarn (150d/45f) and ethylene terephthalate-based modified polyester multifilament yarn (50d/36f) containing 2.3 mol% of 5-sodium isophthalic acid and 6.5 mol% of isophthalic acid based on the total acid component. A plain weave is woven using pongee-like textured yarn for the warp and weft, and after 12% alkali reduction processing, the polyethylene terephthalate fiber is dyed in a different color with a disperse dye and the modified polyester fiber is dyed with a cationic dye, and a glue containing 30% aluminum sulfate is created. Print the liquid and print at 180℃
After high-temperature steaming for 30 minutes, it was washed with water, dried, and further heat-treated at 180°C for 30 seconds.

As a result, an etching cloth with a dry-touch feel that was clear and had excellent fastness was obtained. It also had excellent anti-snagging properties.

Example 2 Two intertwisted yarns (2000t/m) of polyethylene terephthalate filament yarn (75d/72f) and modified polyester filament yarn (50d/36f) used in Example 1 were used alternately for the warp and weft. The woven plain weave was subjected to the same erosion process as in Example 1, and then subjected to a 15% alkali reduction process,
After washing with water and drying, it was heat-treated at 180°C for 30 seconds. The resulting excavated cloth was dry-touch and had excellent drapability.

Example 3 A plain woven fabric using a yarn obtained by blending polyethylene terephthalate filament yarn (100d/48f) and the modified polyester filament yarn (50d/36f) used in Example 1 with an interlacer without twisting as the warp and weft. The material was subjected to the same alkali reduction treatment, different color dyeing and etching treatment as in Example 1.

As a result, the resulting cloth had a fluffy appearance, a silky texture, and was rich in design and drapability.

Example 4 S, Z2 using the twisted yarn used in Example 2 as the warp
On the other hand, a plain woven fabric using the pongee-like textured yarn used in Example 1 as the weft was subjected to the same alkali weight reduction process as in Example 1, and then subjected to the same alkali reduction process as in Example 1 (however, the same process as in Example 1 was applied) The polyester fibers in the excavated area were colored at the same time as the etching was carried out.

The resulting etched cloth was a highly designed cloth that had a design effect depending on the presence or absence of a shimmering part.

Claims (1)

[Claims] 1. A mixture of acid metal base-containing polyester fibers obtained by copolymerizing 0.2 to 10 mol% of acid metal base-containing ester-forming compounds based on the total acid component and polyester fibers containing no acid metal bases. A method for producing a polyester fiber-free product, which comprises treating the article with an acid to remove acid-metal base-containing polyester fibers. 2. The method for producing an etched polyester fiber product as claimed in claim 1, which is subjected to alkali weight reduction treatment before the acid treatment. 3. Post-etching heat treatment to at least partially bond acid metal base-containing polyester fibers and/or acid metal base-containing polyester fibers and acid metal base-free polyester fibers in non-etched areas to each other at least partially. A method for producing an etched polyester fiber product according to item 1.