JPH09310247A - Production of woven fabric for pleat curtain - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a production process for woven fabric for pleat curtain which is excellent in formability, multi-dyeing properties and pleat retention. SOLUTION: This production process comprises three steps. In the first step, fiber (A) of cationic dye-dyeable polyethylene terephthalate and fiber (B) of a sheath-core type conjugated fiber comprising polyethylene terephthalate fiber as the core and a low-melting cationic dye-dyeable polyester fiber as the sheath are mixed and spun at an A/B ratio of 0/100-80/20 to prepare a mixed spun yarn. A spun yarn containing this mixed spun yarn and the fiber (A) are used to produce a woven fabric in which the warp yarn comprises the mixed spun yarn by more than 20wt.% and the polyethylene terephthalate spun yarn is used as the weft yarn. In the second step, the woven fabric is multi-dyed with a cationic dye and a dispersion dye, heat-treated at a temperature higher than the melting point of the low-melting cationic dye-dyeable polyester thereby fusing at least a part of the yarn-crossing points. In the third step, the woven fabric is folded in the warp direction to form pleats and the folded parts are heat-set at a temperature lower than the melting point of the low-melting cationic dye-dyeable polyester.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a method for producing a pleated curtain fabric using a core-sheath type composite fiber.

[0002]

2. Description of the Related Art Conventionally, pleated curtains using cloth for applications such as blinds have been favorably used because of their texture and good appearance, but ordinary fiber cloth is
Since it has drapeability, it is inferior in moldability and pleat holding ability. Moreover, it is necessary to sew to prevent fraying of the cut surface of the fabric, which is a factor of cost increase. In order to solve these problems, resin processing is applied to the fiber cloth to improve the moldability, pleating retention, and fraying of the cut surface. Currently, it has sufficient pleating retention. Things have not been obtained. Also, it is known that a mixture of low melting point fibers is used to improve moldability, but it is possible to use as a hard-finished fabric in which the entanglement points of the fiber fabric are fused by simply mixing the low melting point fibers. However, it lacked the ability to hold pleats and could not be used for pleated curtains that open and close repeatedly.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to obtain a woven fabric for a pleat curtain which is excellent in moldability, and is excellent in discoloration and pleating retention. It is what

[0004]

The present invention attains the above object and has the following constitution. That is, in the present invention, the blend ratio of the fiber A, which is a polyester fiber dyeable with a cationic dye, and the fiber B, which is a core-sheath type composite fiber having a polyethylene terephthalate core portion and a low-melting cationic dye dyeable polyester sheath portion, is A / B = 0/100
A mixed yarn in the range of 80/20 and a spun yarn composed of the fiber A, 20% by weight or more of the warp yarn is used, and the weft yarn is a polyethylene terephthalate fiber spun yarn. 1 step, a second step in which the woven fabric is dyed differently with a cationic dye and a disperse dye, and then heat-treated at a temperature higher than the melting point of the low-melting cationic dye dyeable polyester to fuse at least a part of the texture points of the woven fabric , Folding the fabric in the warp direction to form pleats, and then
A gist of the present invention is to provide a method for producing a pleated curtain fabric, which comprises a third step of heat setting the folded portion at a temperature not higher than the melting point of the low melting point cationic dye-dyeable polyester.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention is described in detail below.
In the present invention, as the fiber A, a cationic dye-dyeable polyester fiber produced by an ordinary method is used. The core-sheath type composite fiber used as the fiber B has a core portion made of polyethylene terephthalate and a sheath portion made of a low melting point cationic dye dyeable polyester. The melting point of the low melting point cationic dye dyeable polyester is A temperature that is higher than the dyeing temperature that can be applied and that allows at least a part of the texture points of the fabric to be fused by the ordinary heat treatment that is performed after dyeing,
It is preferable to use a material of ˜210 ° C., preferably 150 to 200 ° C., because a woven fabric for pleated curtain with stable quality can be obtained.

As an example of this low-melting point cationic dyeable polyester, a copolymerized polyester obtained by copolymerizing about 15 to 35 mol% of isophthalic acid and about 0.8 to 5 mol% of sulfoisophthalic acid in a polyethylene terephthalate structure. Can be mentioned. The ratio of the core-sheath component of the core-sheath type composite fiber is preferably in the range of 6: 4 to 2: 8, and particularly preferably 5: 5 to 3: 7. If the sheath component is less than 40%, the fusion will be insufficient, and if it exceeds 80%, the core component will be too small and the strength will be reduced, which is not preferable.

In the present invention, the fiber A, which is a polyester fiber dyeable with a cationic dye, and the fiber B, which is the core-sheath type composite fiber, are formed into staples having a cut length of 32 to 102 mm according to a conventional method. The blend ratio of A / B =
A blended yarn is manufactured so that the blended yarn has a density of 0/100 to 80/20. At this time, it is difficult to freely change the mixing ratio of the fiber A and the fiber B by using the filament, but by using the staple, the mixing ratio can be arbitrarily changed, and the hardness and the feel of the fabric can be adjusted and the fusion state can be improved. This is very convenient because the adjustment can be done freely.

In the present invention, the first step of weaving a woven fabric using the above-mentioned mixed yarn and the spun yarn of the fiber A as the warp and the spun yarn of polyethylene terephthalate as the weft is carried out. It is necessary to use 20% by weight or more in the direction of forming pleats, that is, in the warp side. If it is less than 20% by weight, the pleats retaining property is deteriorated, which is not preferable.

Next, the woven fabric is dyed into a desired different color according to the usual dyeing method of a blended woven fabric of cationic dye dyeable polyester and regular polyester, and then at a temperature above the melting point of the low melting point cationic dye dyeable polyester. A second step of heat treatment is performed. At this time, if the melting point of the low-melting point cationic dye-dyeable polyester is set in the range of 140 to 210 ° C., which is higher than the dyeing temperature of polyethylene terephthalate of 120 to 135 ° C., as described above, the low-melting point cationic dye-dyeable dye is dyed. Since the polyester does not melt, troubles during dyeing can be prevented. And, the heat treatment temperature after dyeing is a temperature above the melting point of the low melting point cationic dyeable polyester, that is, 150 to 220.
By setting the temperature to ℃ and heat-treating, the size of the dyed woven fabric can be fixed, and the texture points of the woven fabric can be fused by melting the low-melting cationic dye dyeable polyester. It is possible to obtain a woven fabric having good cut quality and no frayed cut surface.

Next, a third step is performed in which this woven fabric is folded in the warp direction to form pleats, and the folded portion is heat set. The heat setting temperature at this time may be lower than the melting point of the low-melting point cationic dye-dyeable polyester, and may be a temperature within a range not deteriorating the pleating property. At a temperature higher than the melting point of the polyester having a low melting point cationic dye, it is not suitable because the pleats are fused to each other. For example, when a polyester having a melting point of 200 ° C. is used as the low-melting point cationic dye-dyeable polyester, the heat treatment temperature for fusing the texture points of the fabric in the second step is preferably in the range of 200 to 210 ° C. The heat setting temperature of the pleating process performed in three steps is preferably in the range of 120 to 190 ° C.

[0011]

According to the present invention, a mixed yarn of a fiber A which is a polyester dyeable with a cationic dye and a fiber B which is a core-sheath type composite fiber whose core is polyethylene terephthalate and whose sheath is a low melting point cationic dyeable polyester is used. A mixed yarn composed of a spun yarn of fiber A and containing a core-sheath composite fiber is used as a part of the warp, and a weft yarn of polyethylene terephthalate is used to weave a woven fabric. When dyed with different colors, the cationic dye dyeable polyester of the warp and the polyethylene terephthalate of the weft are dyed in different colors, so it is possible to obtain a dyed fabric with a very beautiful appearance and excellent in different colors. When heat treatment is performed at a temperature above the melting point of the low melting point cationic dye dyeable polyester, the low melting point cationic dye dyeable polyester melts, Since some organizations point yarns and fabrics in contact with the melting cationic dye-dyeable polyester is fused, moderately feeling is cured and molded at the time of pleating performed subsequent is very good.

When this woven fabric is folded in the warp direction to form pleats and the folded portion is heat-set at a temperature not higher than the melting point of the low melting point cationic dye dyeable polyester, the low melting point cationic dye dyeable polyester is in a softened state. Since it is fixed in the shape of pleats, it is possible to obtain a woven fabric for pleated curtains having excellent pleats holding property.

[0013]

EXAMPLES The present invention will be described in more detail with reference to examples below. The performance of the pleated curtain fabric in the examples was measured by the following method. (1) Pleat holding property With a pleat width of 25 mm, a sample having 6 pleat vertices on one side was mounted between a pair of upper and lower support frames, and the pleat opening angle was a right angle (that is, the distance between the pleat vertices was 35 .35 mm), and then the entire support frame with the sample attached is kept in a constant temperature and humidity chamber at a temperature of 50 ° C and a humidity of 9
After controlling it to 0% and leaving it for 24 hours, the distance between the peaks of the pleat of the sample (A, B, C, D, E at five points on one side as shown in Table 1) was measured and the elongation was calculated. Then, the average value was evaluated.

Example 1 As the fiber A, a cationic dye-dyeable polyester staple (melting point 252 ° C., cut length 51 mm) obtained by copolymerizing sulfoisophthalic acid in a polyethylene terephthalate structure at 1.5 mol%, and as the fiber B, Polyethylene terephthalate having a cut length of 51 mm, a core having a polyethylene terephthalate structure having a sheath of 20 mol% of isophthalic acid,
Consists of a low-melting cationic dye dyeable polyester (melting point 200 ° C) copolymerized with 1.5 mol% of sulfoisophthalic acid
Prepare a core-sheath type composite fiber (core / sheath ratio = 3/7), and use fiber A
A mixed spun yarn (cotton count # 30) having a mixed spinning ratio of A and B = 40/60 was obtained.

First, in a first step, the above-mentioned mixed yarn and the spun yarn composed of the fiber A (cotton count 30) are each made into a double yarn as warp yarns, and every other yarn is arranged with 27 yarns per inch, and as a weft yarn. Forty-six spun yarns of polyethylene terephthalate (cotton count 20) were struck between the inches to woven a plain woven fabric.

Next, as a second step, this woven fabric is scoured by a usual method, and then a cationic dye [Sumitomo Chemical Co., Ltd., Es
trol Yellow 3RL-SD 0.05% owf] and disperse dye [Dyster Japan KK, Miketon Polyester Bl
ue FBL 0.1% owf], and one-bath simultaneous staining was performed. The resulting dyed cloth had a light warp dyed in a light yellow color and a weft dyed in a light blue color, and was excellent in iridescent-like discoloration.

Further, this dyed cloth is 205 in a tenter.
Heat treatment was performed at ℃ for 1 minute. The woven fabric which had been subjected to this heat treatment had an appropriate hardness without causing the cut points to be frayed due to fusion of the texture points of the woven fabric due to the melting of the low melting point cationic dyeable polyester. Next, the obtained woven fabric was folded in the warp direction to a width of 25 mm to form a pleated shape, and the folded portion was subjected to a pressure of 70 by using a heat press tester.
By performing the third step of heat setting at 0 ° C./cm ² at 140 ° C. for 30 seconds, a woven fabric excellent in pleats retention of the present invention was obtained.

For comparison with the present invention, a pleated fabric for comparison was prepared in the same manner as in this example except that the mixing ratio of the fibers A and B was A / B = 100/0. (Comparative Example 1) was obtained. For comparison with the present invention, a pleated fabric for comparison (comparative pleated fabric) was prepared in the same manner as in this example except that the mixed spinning ratio of the fiber A and the fiber B was A / B = 90/10. Comparative Example 2) was obtained. Furthermore, for comparison with the present invention,
A pleated fabric for comparison (referred to as Comparative Example 3) was obtained in the same manner as in this Example except that the blended yarn was 15% by weight of the warp in this Example.

The performances of the present invention and comparative pleated curtain fabrics were measured and evaluated, and the results are shown together in Table 1.

[0020]

[Table 1]

As is clear from Table 1, the fabric for pleated curtain produced by the method of the present invention had a very small elongation rate between the vertices of the pleats and was stable. This is because the texture points of the fabric are fused and fixed by the low melting point cationic dye dyeable polyester, so that the pleats are excellent in moldability, and the warp yarns are made into a pleated shape by using the low melting point cationic dye dyeable polyester. Since it was fixed, the pleats were very well retained and the texture when used as a curtain was also good. In addition, the pleated fabric produced by the method of the present invention was constructed so that the warp yarn and the weft yarn could be dyed in different colors, and thus had a very beautiful appearance.

[0022]

EFFECTS OF THE INVENTION Since the pleated curtain fabric obtained by the method of the present invention uses the cationic dye-dyeable polyester for the warp and the polyethylene terephthalate for the weft, it is possible to easily obtain a pleat curtain with excellent discoloration. At the same time, the texture points of the woven fabric are fused and there is no fraying of the cut surface, and the formability and retention of the pleats are very good. Further, in the method of the present invention, since staples are used, the blending ratio can be freely selected, and a pleat curtain having a desired texture can be easily obtained.

Continuation of front page (51) Int.Cl. ⁶ Identification number Office reference number FI Technical display location D06C 7/02 D06C 7/02 D06J 1/00 D06J 1/00 // D02G 3/04 D02G 3/04

Claims (1)

[Claims] 1. A mixed spinning ratio of fiber A, which is a polyester fiber dyeable with a cationic dye, and fiber B, which is a core-sheath type composite fiber with a polyethylene terephthalate core and a low melting point polyester dyeable with a low melting point, in the sheath portion is A / B. = 0/100
A mixed yarn in the range of 80/20 and a spun yarn composed of the fiber A, 20% by weight or more of the warp yarn is used, and the weft yarn is a polyethylene terephthalate fiber spun yarn. 1 step, a second step in which the woven fabric is dyed differently with a cationic dye and a disperse dye, and then heat-treated at a temperature higher than the melting point of the low-melting cationic dye dyeable polyester to fuse at least a part of the texture points of the woven fabric , Folding the fabric in the warp direction to form pleats, and then
A method for producing a pleated curtain fabric, comprising a third step of heat setting the folded portion at a temperature not higher than the melting point of the low-melting point cationic dye-dyeable polyester.