JPH11200174A - High density woven fabric - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a high density woven fabric having an excellent down-proof properties, good air-permeability and soft feeling and providing various clothes such as coldproof clothes such as a down jacket. SOLUTION: This high density woven fabric has a ratio of covering factors of warp to weft regulated so as to be 1.0-2.0 and 2,000-3,000 total of the covering factors, and comprises a trimethylene terephthalate fiber having >=90% elastic recovery.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a novel high-density woven fabric. More specifically, the present invention relates to a high-density woven fabric exhibiting excellent down-proof properties (performance of preventing a down material filled in a cold-protective garment from leaking out to the fabric surface), good air permeability, and a soft texture.

[0002]

2. Description of the Related Art Hitherto, high-density woven fabrics using polyamide-based multifilaments or polyester-based multifilament yarns have been used as a surface material and a backing material for down-filled winter clothing, such as a down jacket. Widely used as a product. These products are usually woven at high densities to improve down-proof properties, but at higher densities, the air permeability decreases, hinders the excellent moisture absorption and desorption performance of down, and the texture becomes harder Disadvantage occurs.

There is also a method of coating the surface in order to improve the down-proofing property. However, when the surface is coated, the air permeability is further reduced, so that the excellent moisture absorption and desorption properties of the down cannot be utilized. . further,
There is also a method of weaving split-type fibers at high density and dividing the split-type fibers at the time of finishing to fill the gaps at the intersections of the warp and weft yarns of the woven fabric to improve down-proofing properties, but this also reduces air permeability. In addition, there is a problem that the finishing process is complicated and the cost is increased.

[0004]

DISCLOSURE OF THE INVENTION The present invention provides a high-density woven fabric having excellent down-proofing properties, good air permeability and soft feeling, and used for various kinds of clothing such as winter clothing such as down jackets. I do.

[0005]

Means for Solving the Problems As a result of intensive studies, the present inventors have found that the ratio of the warp coverage to the weft coverage is 1.0 to 1.0.
The present invention provides a high-density woven fabric having a 2.0, a total coverage of 2,000 to 3,000, and comprising a polytrimethylene terephthalate fiber having an elastic recovery rate of 90% or more. Was found to be achieved.

Hereinafter, the present invention will be described in detail. The high-density woven fabric of the present invention needs to be composed of polytrimethylene terephthalate fibers. In order to constitute the high-density woven fabric of the present invention with the polytrimethylene terephthalate fiber, it is necessary to use the polytrimethylene terephthalate fiber for the weft and the warp, the weft or the warp of the woven fabric. Here, the plain fabric is the most common plain fabric, but may be a twill fabric or a fabric having a patterned structure.

In the present invention, the term "polytrimethylene terephthalate fiber" refers to a polyester fiber having a trimethylene terephthalate unit as a main repeating unit, and the trimethylene terephthalate unit is about 50 mol% or more, preferably 70 mol% or more, more preferably. Is 80 mol%
Above, particularly preferably 90 mol% or more. Therefore, the total amount of the other acid component and / or glycol component as the third component is within a range of about 50 mol% or less, preferably 30 mol% or less, more preferably 20 mol% or less, and particularly preferably 10 mol% or less. And polytrimethylene terephthalate.

[0008] Polytrimethylene terephthalate is synthesized by polycondensing terephthalic acid or a functional derivative thereof with trimethylene glycol or a functional derivative thereof in the presence of a catalyst under appropriate reaction conditions.
In this synthesis process, an appropriate one or two or more third components may be added to form a copolymerized polyester,
Further, polyesters other than polytrimethylene terephthalate such as polyethylene terephthalate and the like and nylon and polytrimethylene terephthalate may be separately synthesized and then blended or composite-spun (sheath core, side-by-side, etc.).

As the third component to be added, aliphatic dicarboxylic acids (oxalic acid, adipic acid, etc.), alicyclic dicarboxylic acids (cyclohexyl dicarboxylic acid, etc.), aromatic dicarboxylic acids (isophthalic acid, sodium sulfoisophthalic acid, etc.) ), Aliphatic glycols (ethylene glycol, 1,2
-Propylene glycol, tetramethylene glycol, etc.), alicyclic glycols (cyclohexanediol, etc.), aromatic dioxy compounds (hydroquinone bisphenol A, etc.), aliphatic glycols containing aromatics (1,4
-Bis (β-hydroxyethoxy) benzene, etc.), polyether glycols (polyethylene glycol, polypropylene glycol, etc.), aliphatic oxycarboxylic acids (ω
-Oxycaproic acid), aromatic oxycarboxylic acids (P
-Oxybenzoic acid, etc.). Also one or three
Compounds having more than one ester-forming functional group (such as benzoic acid or glycerin) can also be used in a range where the polymer is substantially linear.

Further, matting agents such as titanium dioxide, stabilizers such as phosphoric acid, ultraviolet absorbers such as hydroxybenzophenone derivatives, crystallization nucleating agents such as talc, lubricating agents such as aerosil, and antioxidants such as hindered phenol derivatives. An oxidizing agent, a flame retardant, an antistatic agent, a pigment, a fluorescent whitening agent, an infrared absorbing agent, an antifoaming agent and the like may be contained. The spinning method of the polytrimethylene terephthalate fiber in the present invention is 1500 m /
After obtaining an undrawn yarn at a winding speed of about 1 minute, a method of twisting at a rate of about 2 to 3.5 times, a direct drawing method in which a spinning-drawing step is directly connected, and a high-speed spinning at a winding speed of 5000 m / min or more. Any of the methods (spin draw or spin take-up method) may be adopted.

The form of the fiber may be a long fiber or a short fiber, may be uniform or thick in the longitudinal direction, and may be round, triangular, L-shaped, T-shaped or Y-shaped in cross section. , W
It may be a polygonal type such as a mold, an eight-leaf type, a flat shape, a dogbone type, etc., a multi-leaf type, a hollow type or an irregular shape. Further, as a form of the yarn, fluid injection such as a multifilament raw yarn (including an ultrafine yarn), a sweet twisted yarn to a strong twisted yarn, a mixed fiber yarn, a false twisted yarn (including a drawn false twisted yarn of POY), and a so-called Taslan processed yarn Processed yarn and the like can be mentioned, and a single yarn denier of about 0.1 to 5 denier can be used. The single yarn denier is used in an amount of 0.1 to 2 to improve the softness of the high-density woven fabric.
2 denier is more preferred.

It is to be noted that other fibers are usually entangled and mixed (different shrinkage mixed yarns with high shrinkage yarns), intertwisted, composite temporary yarns within a range of not more than 50% by weight within a range not to impair the object of the present invention. Twist (elongation difference false twist, etc.) may be mixed by means such as two-feed taslan processing. The fibers to be mixed may be any fibers, but synthetic fibers such as polyester fibers, polyamide fibers, polyacrylonitrile fibers, polyvinyl fibers, polypropylene fibers, and polyurethane fibers can be preferably used.

The above-mentioned polytrimethylene terephthalate fiber is used for the weft and the warp of the woven fabric, the weft or the warp, preferably the warp. The fibers to be interwoven may be any fibers, but synthetic fibers such as polyester fibers, polyamide fibers, polyacrylonitrile fibers, polyvinyl fibers, polypropylene fibers, and polyurethane fibers can be preferably used.

The high-density woven fabric of the present invention has a ratio of the warp coverage to the weft coverage of 1.0 to 2.0 after finishing.
It is necessary that the sum of the coverages is 2000 to 3000. The more preferable sum of the cover rates is 2400 to 3000.
Range. The warp cover ratio, the weft cover ratio, and the ratio of the warp and weft cover ratios referred to here are the following formulas when the number of warp or weft yarns of the woven fabric is set as the number of yarns arranged per 2.54 cm in width and the respective yarn densities. Shall be given. Warp coverage = warp density x √ warp denier Weft coverage = weft density x √ weft denier Ratio of warp coverage to weft coverage = warp coverage / weft coverage High density of the present invention The woven fabric has a ratio of the warp coverage to the weft coverage of 1.0 to 2.0, so that when the woven fabric is used as a down-filled garment, even if the woven fabric is deformed by an impact or an external force, the warp is warped. It is difficult to form a gap between the intersections of the warp and the weft without greatly disturbing the cover balance between the warp and the weft, so that it is possible to prevent the down from coming out of the gap between the intersections of the warp and the weft of the woven fabric.

Further, in the high-density woven fabric of the present invention, the sum of the warp cover rate and the weft cover rate needs to be 2,000 to 3,000. If the sum of the cover ratios is less than 2,000, the gap at the intersection of the warp and the weft becomes large, and the fabric is easily deformed by impact or external force, so that the down-proof property is reduced. Conversely, when the sum of the cover ratios exceeds 3,000, the down-proof property becomes good, but the texture is hard and the air permeability is reduced, so that the good moisture absorption and dehumidification properties of down cannot be utilized. Become. Furthermore,
The polytrimethylene terephthalate fiber constituting the high-density woven fabric of the present invention needs to have an elastic recovery of 90% or more.

The elastic recovery rate referred to here is 0.0% for the sample.
An initial load of 1 g / d is applied, the film is stretched at a constant rate of 20% elongation per minute, and when the degree of elongation reaches 10%, it is contracted at the same rate, and a stress-strain curve is drawn. Is a value calculated by the following equation, where L is the residual elongation when the value decreases to 0.01 g / d, which is equal to the initial load. Elastic recovery at 10% elongation (%) = [(10-L) / 1
0] × 100 The elastic recovery of polytrimethylene terephthalate fiber is 9
When the content is 0% or more, preferably 95% or more, the gap at the intersection of the warp and the weft deformed by an impact or an external force is easily recovered, and the falling out is reduced.
Furthermore, since the needle hole generated when sewing a high-density woven fabric is smaller and the restoration property of returning to the original state is good, the down-proof property from the needle hole is also good.

The high-density woven fabric of the present invention has a smooth surface and a reduced fiber gap by crushing the surface with a heat calender, thereby improving the down-proof property. The heat calender is 150 ° C ~ 1
It can be performed by a method such as heating and pressing a metal roll, paper roll, or the like held at 90 ° C. at a linear pressure of 150 to 350 kg / cm. If a smoothing agent is added prior to the heat calender, the calender effect becomes large. As the leveling agent, a silicon type, a polyolefin type, and a wax type are preferable. Further, post-processing (for example, resin processing, flexible processing, etc.) that is usually performed in the finishing processing step may be performed.

[0018]

EXAMPLES Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited thereto. or,
The polytrimethylene terephthalate fibers used in the examples were prepared as follows. That is, ηsp / c
Polytrimethylene terephthalate of 0.8 is spun at a spinning temperature of 265 ° C. and a spinning speed of 1200 m / min to obtain an undrawn yarn, and then a hot roll temperature of 60 ° C., a hot plate temperature of 140 ° C., a draw ratio of 3 times, and a drawing It was twisted at a speed of 800 m / min to obtain a 75d / 72f drawn yarn. The strength, elongation, elastic modulus and elastic recovery at 10% elongation of the drawn yarn were 3.2 g / d, 46%, 30 g / d and 98 g, respectively.
%Met.

The method for measuring the characteristics of the high-density woven fabric will be described below. (1) Down proof property Two samples of 17 cm × 17 cm are superimposed and 1 cm
Sew three sides with a seam allowance of 12g down (feather 1
(0%, down 90%) and sew the remaining one side to make a small cushion. This small cushion is 20cm x 20c
m, sealed tightly enough to prevent air from entering, put a small cushion and the ball specified below into the box of the ICI pilling tester, rotate the box under the following conditions, and then The number was measured. Ball: (Large) Rubber Baseball Ball φ6.1cm 135g 2 pieces (Small) Golf Ball φ4.2cm 45g 2 pieces Rotation condition: Speed 60r. p. m. (1 rotation / sec) Time 5 hours

(2) Texture The soft feeling of the high-density woven fabric was evaluated by a sensory test on a four-point scale: ◎: very good, ：: good, Δ: slightly poor, ×: very poor. (3) Air permeability Measured according to JIS-L-1096 (Method A).

(Example 1) Polytrimethylene terephthalate fiber of 75 denier 72 filaments having an elastic recovery rate of 98% was used at 147 yarns / inch as a warp, and polytrimethylene terephthalate fiber of 75 denier 72 filaments was also used as a weft. A plain woven fabric was woven at a rate of book / inch, and after relaxing scouring, pre-setting at 180 ° C dry heat, dyeing, and final setting at 180 ° C dry heat were performed. Table 1 shows the results of measuring the physical properties of the obtained fabric. The obtained fabric had a very good down-proof property and did not fall out even at the needle hole by sewing. The texture and air permeability were also good.

(Example 2) Polytrimethylene terephthalate fibers of 75 denier 72 filaments having an elastic recovery rate of 98% were used at 147 yarns / inch as a warp, and polytrimethylene terephthalate fibers of 75 denier 72 filaments were also used as a weft. A plain woven fabric was woven at a rate of book / inch, and after relaxing scouring, pre-setting at 180 ° C dry heat, dyeing, and final setting at 180 ° C dry heat were performed. Table 1 shows the results of measuring the physical properties of the obtained fabric. The resulting fabric had a softer feel, improved air permeability, and had good down-proof properties.

(Example 3) The fabric obtained in Example 2 was
Heat calendering was performed with a metal roll at a temperature of 180 ° C. and a linear pressure of 250 kg, and a smoothing treatment was performed. Table 1 shows the results of measuring the physical properties of the obtained fabric. The obtained fabric had a very good down-proof property and texture, and also had high air permeability.

(Comparative Example 1) After weaving, weaving, presetting, relaxing scouring, dyeing, and final processing were performed in the same manner as in Example 1 except that the warp and the weft were made of polyethylene terephthalate fiber of 75 denier and 72 filaments having an elastic recovery rate of 75%. I did a set. Table 1 shows the results of measuring the physical properties of the obtained fabric. The obtained fabric was inferior in down-proof property and slightly inferior in texture.

(Comparative Example 2) Warp and weft were subjected to an elastic recovery rate of 8
After weaving in the same manner as in Example 1 except that 7% of 70 denier 88 filament nylon 66 fiber was used,
Relaxed scouring, dyeing and final set were performed. Table 1 shows the results of measuring the physical properties of the obtained fabric. Although the obtained fabric has a good texture,
It was inferior in down-proof property.

(Comparative Example 3) After weaving, weaving, presetting, relaxing scouring, dyeing, and final processing were performed in the same manner as in Example 2 except that the warp and the weft were made of polyethylene terephthalate fibers of 75 denier and 72 filaments having an elastic recovery rate of 75%. I did a set. Table 1 shows the results of measuring the physical properties of the obtained fabric. The resulting fabric has a texture,
Good breathability but poor down-proof properties, and
In the needle hole formed by sewing, slipping out of the down was observed.

[0027]

Comparative Example 4 Polydenmethylene terephthalate fiber of 75 denier and 72 filaments having an elastic recovery rate of 98% was used at 147 yarns / inch as a warp, and 7 as a weft.
Weaving a plain fabric using 5 denier 72 filament polytrimethylene terephthalate fiber at 65 fibers / inch,
After relaxing scouring, pre-setting and dyeing processing were performed at 180 ° C dry heat, and final setting was performed at 180 ° C dry heat. Table 1 shows the results of measuring the physical properties of the obtained fabric. The obtained fabric had very good texture and air permeability, but was inferior in down-proofing property, and the needle was found to have slipped out even in a needle hole formed by sewing.

[0028]

[Table 1]

[0029]

The high-density woven fabric of the present invention has excellent down-proofing properties, and has good air permeability and soft texture.

Claims (1)

[Claims] 1. A high-density woven fabric having a ratio of a warp cover ratio to a weft cover ratio of 1.0 to 2.0, and a sum of the cover ratios of 2000 to 3000, and having an elastic recovery rate of 90% or more. A high-density woven fabric comprising trimethylene terephthalate fibers.