JPH05263375A - Opal processed product of polyester fiber fabric - Google Patents

Abstract

PURPOSE:To obtain the subject opal processed product brilliant in the shape edges, rich in the stereoscopic feeling and excellent in the design effects by subjecting a fabric partially using conjugated yarns comprising polyester fibers having different alkali weight-reducing rates to a corroding treatment. CONSTITUTION:A corrosion paste (e.g. changing on the alkaline side with the rise in temperature) preferably comprising an inorganic sizing agent containing sodium trichloroacetate and diatomaceous earth and/or montmorillonite as a corroding agent is printed on a fabric partially using composite yarns produced e.g. by interlacing or doubling polyester fibers having a small alkali weight-reducing rate and polyester fibers having a large alkali weight-reducing rate, and subsequently subjected to a steaming treatment to corrosion-dissolve only the fibers having the large alkali weight-reducing rate to obtain the polyester fiber opal processed product not causing the slippage and fraying of the fibers, giving brilliant shape edges and having a sharp stencil pattern.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opal processed product of polyester fiber cloth.

[0002]

2. Description of the Related Art As a kind of discharge printing method, a woven or knitted cloth of fibers such as polyester, nylon and silk and vegetable fibers such as rayon, or a paste for carbonization using sulfuric acid or aluminum sulfate as a mixed spinning cloth. It has been known for a long time as an opal process to print a pattern and carbonize and remove the plant fibers in the printed portion to form a watermark pattern. However, the known opal processing has a drawback that the sharpness at the time of molding is lacking, it is difficult to dye different colors with the same color, and the characteristics of the fibers are lost. Since polyester fibers have various excellent physical properties, opal processed products made of polyester fibers have recently been demanded by utilizing these physical properties. As a processing method for polyester fiber products,
There is also known a method of printing a desiccating paste containing alkali and heat-treating it to locally dissolve and remove the polyester fiber, but this method is difficult to control, the mold is unclear, and the watermark pattern is monotonous. There was a flaw.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a product having a design effect with a sharp mold edge and a rich three-dimensional effect by opalizing such a polyester fiber cloth.

[0004]

The present invention has solved the above-mentioned problems by utilizing a composite yarn containing two or more kinds of polyester fibers having different alkali weight loss rates. That is,
The opal processed product of the present invention is a fabric containing at least a part of a composite yarn in which two or more kinds of polyester fibers having different alkali weight loss rates are combined and used, and the alkali weight loss rate contained in the composite yarn is large. It is characterized in that only the fibers are subjected to a substantial extrusion process to form a watermark pattern.

The fibers used in the above composite yarn generally have a difference in alkali weight loss between a fiber having a high alkali weight loss rate and a fiber having a low alkali weight loss rate of 9% in a 2% NaOH solution.
It is preferable that the difference in weight loss after treatment at 0 ° C. for 30 minutes is 50: 1 or more.

As the polyester fiber having a low alkali weight loss rate, it is preferable to use a polyester fiber containing terephthalic acid as a main acid component and alkylene glycol having 2 to 6 carbon atoms as a main glycol component. Fibers having a high alkali weight loss rate include polyesters such as those mentioned above, isophthalic acid, naphthalene dicarboxylic acid, diphenyl dicarboxylic acid, p-
1 part of a third component selected from the group consisting of oxybenzoic acid, sebacic acid, trimellitic acid, 5-sodium sulfoisophthalic acid, 5-potassium sulfoisophthalic acid, 5-methylsulfoisophthalic acid and polyalkylene glycol It is preferable to use fibers made of copolyester copolymerized by mol% to 15 mol%, or fibers made of polyester blended with 1 to 15% by weight of polyalkylene glycol, sodium alkylsulfonate or sodium alkylbenzenesulfonate.

As the composite yarn, a yarn obtained by air entanglement or ply twisting a yarn having a low alkali deceleration rate and a yarn having a high alkali deceleration rate is used as a core yarn, and a yarn having a low alkali deceleration rate is used as a core yarn, and an alkali depletion is provided around it. It is preferably used as a composite processed yarn in which a yarn having a high speed is wound in a loop shape. When such a composite yarn is used, a very clear watermark pattern can be obtained without misalignment or fraying on the mold due to the removal processing. Further, by using the composite processed yarn in which the yarn having a high alkali weight loss rate is wound around the outside in a loop shape, it is possible to obtain a product in which the volume feeling, the feel and the appearance are particularly changed.

Further, such a composite yarn may be used as at least a part of the constituent fibers of the cloth such as a woven fabric or a knitted fabric, but in the present invention, the whole cloth can be composed of the polyester fiber, Flameproofing is also possible, and opal processed products that can be used as curtain fabrics can be obtained.

The product of the present invention is printed with a desiccating paste capable of eliminating fibers having a high alkali weight loss rate on a cloth,
It is obtained by dissolving and removing only the fibers having a high alkali weight loss rate of the composite yarn as described above.

As the discharging paste, a discharging paste containing an alkali metal hydroxide, carbonate, bicarbonate or the like used in usual opal processing may be used. In the case of using a system fiber, in order to obtain a stable food removal effect without affecting the yarn having a low alkali weight loss rate, a food removal paste containing a salt of carboxylic acid chloride and an inorganic sizing agent. Is preferably used. As the salt of carboxylic acid chloride, the sodium salt of carboxylic acid chloride is preferable, and the sodium salt of trichloracetic acid is particularly preferable. Examples of the inorganic sizing agent include sizing agents containing diatomaceous earth and / or montmorillonite in an amount of 50% or more. These may be mixed with a polymer paste such as etherified starch, locust bean gum, guar gum, carboxymethyl cellulose, hydroxyethyl cellulose, crystal gum, sodium alginate and the like.

The discharging paste containing a salt of carboxylic acid chloride and an inorganic sizing agent may further contain a third component such as an alkali-resistant penetrant and a discharging agent. At room temperature, the pH is about 4 to 7. However, when dried at 60 ° C to 120 ° C, the pH becomes 7-9, and when steamed with saturated steam or high temperature steam,
The pH becomes 10 or more, and the polyester fiber can be extracted. Therefore, it is necessary to heat-treat (steam) the printing paste after printing it on a fabric under the condition of a relative humidity of 90% or more.

[0012]

【Example】

Example 1 A1) Alkali sparingly soluble yarn [unstretched polyethylene terephthalate yarn (spinning speed 3200 m / min, 115 d / 36 f, elongation 1
20%, alkali weight loss rate 0.5%)] and B1) alkali easily meltable yarn [sodium sulfoisophthalate
4.25 mol%, polyethylene glycol (molecular weight 400
0) 75d / 36f polyethylene terephthalate yarn containing 8% by weight (spinning speed 1500 m / min, 225 d / 36
f, elongation 300%, alkali weight reduction rate 70%)], and at the same time stretched and false twisted by an external friction disk, a bulky yarn in which the yarn B1 is wound around the yarn A1. Obtained. The false twist conditions are as follows. False twisting condition: false twisting machine SDS-8 yarn speed 450 m / min draw ratio 1.487 speed ratio (D / Y) 2.012 heater temperature 160 ° C. obtained by weaving the bulky yarn thus obtained with a plain weave design After scouring and heat setting the woven fabric, 20 parts of sodium trichloroacetate, 8 parts of diatomaceous earth, 6 of montmorillonite
Part, carboxymethylcellulose 3 parts, water 63 parts in total 1
A stripping paste (pH 6.0) consisting of 00 parts was printed in a pattern on the woven fabric. After drying at 105 ° C. for 2 minutes, steaming was performed at 130 ° C. for 30 minutes with saturated steam, followed by washing with water and drying. By this treatment, the sheath yarn (B1 yarn) existing on the surface of the bulky yarn is dissolved and removed at the portion where the printing paste is printed, but the core yarn (A1 yarn) is not dissolved, Since it remains in the form of thin multifilament, the product is
There was an extremely sharp watermark pattern (concave pattern) on the edge of the mold. Since the core yarn remaining as the watermark pattern is false twisted, it is possible to obtain a very high quality product without slipping.

Example 2 A2) An alkali sparingly soluble yarn [polyethylene terephthalate yarn (75d / 36f)] and a stretched yarn B2 of the alkali easily soluble yarn B1 of Example 1 were used, and the method described in JP-A-61-146835 was used. In the same manner as in Example 1, A2 was used as the core thread and
A slab yarn in which B2 was wound in a loop shape as a sheath yarn was obtained. Polyethylene terephthalate yarn (50d / 3) as warp
6f) is used, and the above slab yarn (235d) is used for the weft.
Was woven into a plain weave design (warp density 80 threads / inch, weft density 65 threads / inch). After refining the obtained woven fabric, a desizing paste (pH 5.8) consisting of 5.6 parts of etherified starch, 20 parts of sodium trichloroacetate and 74.4 parts of water was printed and dried at 105 ° C for 2 minutes. Steaming was carried out at atmospheric pressure for 30 minutes with saturated steam, washing with water and drying. As a result, only the slab yarn sheath yarn B2 (loop-shaped yarn) located at the stamping paste printing part was dissolved and removed, and a highly contrasting scavenging pattern was formed as a worm-eaten pattern with no loops on the surface. A product with excellent design effect was obtained.

Example 3 Alkali sparingly soluble yarn A2 of Example 2 and alkali easily soluble yarn B2 of Example 2 were Taslan-processed with THA-800S manufactured by Aikisha Co., Ltd., and the yarn of B was the yarn of A '. A composite bulky yarn wound around in a loop was obtained. The processing conditions are as follows. Processing speed 300m / min A2 yarn overfeed rate 5% B1 yarn overfeed rate 20% Nozzle heber line No.311 This composite bulky yarn is used for both warp and weft, and plain weave design (warp density 65 yarns / inch, Weaving was carried out to a weft density of 65 yarns / inch, and the surface of the thus obtained woven fabric was printed with a desiccant paste in the same manner as in Example 2 and subjected to a desiccation process. This product not only has a different appearance in the processed part (the part where the loop of B2 thread is dissolved and removed) and the other part (the part where the loop of the B2 thread remains), but also the wind. The result is a very different pattern, resulting in a very unique patterned fabric.

Example 4 Polyethylene terephthalate yarn (75d / 36) was used as the warp.
f, s1000) and a weft yarn using a composite yarn (s800) obtained by interlacing the easily soluble alkali yarn B2 of Example 2 and the polyester wooly processed yarn of 50d / 36f in an interlaced manner to obtain a plain weave (organdy). It was When this woven fabric was subjected to the same edging process as in Example 1, it was possible to obtain an opal-processed product which had a very good texture and was beautiful on the die side.

Comparative Example Commercially available atmospheric pressure cationic dyeable yarn (75d / 36f) and 50d /
Weaving was performed under the same conditions as in Example 3 using a composite yarn (s800) obtained by interlacing 36f polyester wooly processed yarn. However, the opal pattern part did not come off well, and most of it remained in the semi-molten state on the surface, and it became of no commercial value. The alkali weight loss rate of the used commercial atmospheric pressure cationic dyeable yarn in a 2% solution of NaOH at 90 ° C. for 30 minutes was 45%.

[0017]

EFFECTS OF THE INVENTION According to the present invention, since two or more kinds of polyester fibers having different alkali weight loss rates are used as the composite yarn, there is no misalignment or fraying of the yarn due to the discharging process, and it is very sharp when molding. , Opal processed products can be obtained. In addition, the product of the present invention has a peculiar appearance such as worm-eaten or embossed tones because the composite yarn excellent in volume feeling is partially deformed to a thin yarn to form a watermark pattern. It also has excellent texture. Since it is possible to obtain an opalized product which is entirely made of polyester fiber, it is possible to apply a flameproofing treatment and use the product as a curtain or the like.

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Claims (5)

[Claims] 1. A fabric containing, at least in part, a composite yarn in which two or more kinds of polyester fibers having different alkali weight loss rates are used in combination, and only a yarn having a high alkali weight loss rate contained in the composite yarn. Is a polyester fiber fabric opal-processed product, which is characterized in that a watermark pattern is formed by substantially discharging. 2. A fiber having a high alkali weight loss rate and a fiber having a low alkali weight loss rate, which are contained in the composite yarn,
The opal processed product according to claim 1, wherein the difference in alkali weight loss due to treatment at 90 ° C for 30 minutes in a 2% NaOH solution is 50: 1 or more. 3. The fiber having a low alkali weight loss rate is composed of polyester having terephthalic acid as a main acid component and alkylene glycol having 2 to 6 carbon atoms as a main glycol component, and has a high alkali weight loss rate. Fiber is a polyester having terephthalic acid as a main acid component and alkylene glycol having 2 to 6 carbon atoms as a main glycol component, and isophtalic acid, naphthalene dicarboxylic acid, diphenyl dicarboxylic acid, p-oxybenzoic acid, sebacic acid, triacetic acid 1 mol% to 15 mol% copolymerization of a third component selected from the group consisting of mellitic acid, 5-sodium sulfoisophthalic acid, 5-potassium sulfoisophthalic acid, 5-methylsulfoisophthalic acid and polyalkylene glycol. Fiber made of copolyester or poly The opal processed product according to claim 1, which is a fiber made of a polyester blended with 1 to 15% by weight of alkylene glycol, sodium alkylsulfonate or sodium alkylbenzenesulfonate. 4. The yarn according to claim 1, wherein the composite yarn is a yarn obtained by air-entanglement or ply twisting a yarn having a low alkali weight reduction rate and a yarn having a high alkali weight loss rate. Opal processed product. 5. The composite yarn is a composite processed yarn in which a yarn having a low alkali deceleration rate is used as a core yarn, and a yarn having a high alkali deceleration rate is wound around the core thread in a loop shape. Item 1. An opal processed product according to any one of items 1 to 3.