TW202217100A - Low-air-permeability fabric and textile product - Google Patents

Abstract

The problem addressed is to provide a low-air-permeability fabric and a textile product that are not only down-proof but also have superior stretching properties. The means for resolving said problem is to include stretchable fibers in a low-air-permeability fabric having air permeability of 1.0 cc/sec/cm2 or less.

Description

Low air permeability fabrics and fiber products

The present invention relates to a low-air-permeability fabric and a fiber product excellent in not only down proof but also tension.

Conventionally, in the fields of outerwear and quilt covers, low-air permeability fabrics that are excellent in the effect of reducing the blow-out of cotton and down (down-pull resistance) have been proposed (for example, see Patent Document 1 and Patent Document 2).

On the other hand, in recent years, in order to improve the wearing comfort of the fabric, it has been sought to add tension to the fabric.

However, the down piercing prevention property and the tension property are opposite properties, and it is difficult to have both of them. [Prior Art Literature] [Patent Literature]

Patent Document 1: Japanese Patent Laid-Open No. 2005-048298 Patent Document 2: Japanese Patent Laid-Open No. 2012-057265

[The problem to be solved by the invention]

The present invention has been made in view of the above-mentioned background, and an object thereof is to provide a low-air permeability fabric and a fiber product which are excellent in not only the down puncture resistance but also in the stretchability. [means to solve the problem]

The inventors of the present invention have conducted intensive studies to achieve the above-mentioned problems, and found that by ingeniously designing the yarns constituting the fabric, it is possible to obtain a low-air-permeability fabric that is excellent in not only the down puncture resistance but also the stretchability. The present invention has been completed.

Therefore, according to the present invention, there is provided "a low air permeability fabric having an air permeability of 1.0 cm ³ /cm ² ･s or less, and characterized by containing stretchable fibers".

In this case, in the aforementioned fabric, the elongation in the warp direction or the weft direction is preferably 17.5% or more. And, in the preferred fiber, the first part of GB T 12705.1-2009 Test method for down shedding of textiles: the shedding of down due to friction method is less than 50 pieces. And, in a preferred fabric, the warp coverage factor is 800-1500 and the weft coverage factor is in the range of 700-1200. However, the warp coverage factor (warp CF) and the weft coverage factor (weft CF) are defined by the following equations. Warp CF=(DWp/1.1) ^1/2 ×MWp Weft CF=(DWf/1.1) ^1/2 ×MWf [DWp is the warp total fineness (dtex), MWp is the warp weaving density (root/2.54cm), and DWf is The weft yarn total fineness (dtex), MWf is the weft yarn weaving density (root/2.54cm)]. Further, the stretchable fiber is preferably a polyurethane fiber, a conjugate fiber in which two components are joined in a side-by-side type or an eccentric core-sheath type, a false-twist crimped yarn, or a polytrimethylene terephthalate fiber. Also, preferred fabrics have a flat weave or a ripstop taffetas weave. Also, it is preferable to perform water repellent processing on the fabric. Moreover, it is preferable that the coating process for water repellency or the lamination process is not performed on the fabric. Also, the preferred fabric is not calendered. Furthermore, the tear strength of the fabric in the warp direction or the weft direction is preferably 7N or more. Here, the tear strength is measured by the JIS L 1096-2010 8.17D method. The slip resistance of the preferred fabric is 3 mm or less. Here, the slip resistance was measured by the JIS L 1096-2010 8.23B method (load 117.7N). And, the Rotating Box IDFL20-1 (modified FTMS191-5530) of the preferred fabric is 5 (0-5 particles).

Furthermore, according to the present invention, there is provided a fiber product selected from the group consisting of a down jacket, a down jacket, a quilt, a sleeping bag and a sportswear using the aforementioned low air permeability fabric. [Inventive effect]

According to the present invention, low-air-permeability fabrics and fiber products are obtained which are excellent in not only the down puncture resistance but also the stretchability.

First, it is important that the low-air permeability fabric of the present invention has an air permeability of 1.0 cc/sec/cm ² or less (more preferably 0.01 to 1.0 cc/sec/cm ² , particularly preferably 0.1 to 0.5 cc/sec/cm ^{2 )} . ). When the air permeability is more than 1.0 cc/sec/cm ² , the down piercing resistance may be lowered, and it is unfavorable. In addition, this air permeability was measured by JIS L1096-2010 8.26.1 A method (Frazir method).

The low-ventilation fabric of the present invention contains stretch fibers. In this case, the stretchable fiber is preferably a fiber composed of one component made of polyurethane, a conjugate fiber (conjugated filament), an elastic fiber (poly urethane-based fibers, polyetherester-based fibers, water-absorbent elastomer fibers, etc.), unstretched polyester fibers, false-twisted crimped yarns, and the like.

Here, it is preferable to constitute the fabric of the present invention only with the aforementioned stretchable fibers. For example, it is preferable to form a fabric only with elastic fibers and false twisted crimped yarns, or only from two-component conjugate fibers and false twisted crimped yarns joined in a side-by-side or eccentric core-sheath type.

As the aforementioned conjugate fiber, at least one component is preferably a conjugate fiber composed of polytrimethylene terephthalate, polybutylene terephthalate, or polyethylene terephthalate. Specific examples of the combination of two components include polytrimethylene terephthalate and polytrimethylene terephthalate, polytrimethylene terephthalate and polyethylene terephthalate, and polyethylene terephthalate. Ethylene glycol and polyethylene terephthalate, polyethylene terephthalate and polybutylene terephthalate, etc.

Herein, the so-called polytrimethylene terephthalate refers to fibers made of polyesters with trimethylene terephthalate units as the main repeating unit, which means that the units of trimethylene terephthalate are 50 moles % or more, preferably 70 mol % or more, more preferably 80 mol % or more, particularly preferably 90 mol % or more. Therefore, polytrimethylene terephthalate is contained, and the total of other acid components and/or diol components contained as the third component is 50 mol % or less, preferably 30 mol % or less, more preferably 20 mol % Below, the range of 10 mol% or less is particularly preferred.

Polytrimethylene terephthalate is produced by condensing terephthalic acid or its functional derivative and propylene glycol or its functional derivative under appropriate reaction conditions in the presence of a catalyst.

Examples of the third component to be added include aliphatic dicarboxylic acids (oxalic acid, adipic acid, etc.), alicyclic dicarboxylic acids (cyclohexanedicarboxylic acid, etc.), aromatic dicarboxylic acids (isophthalic acid, etc.) , sodium sulfonate isophthalic acid, etc.), aliphatic diols (ethylene glycol, 1,2-trimethylene glycol, tetramethylene glycol, etc.), alicyclic diols (such as cyclohexanediol) alcohols, etc.), aromatic dioxy compounds (hydroquinone bisphenol A, etc.), aliphatic diols containing aromatics (1,4-bis(β-hydroxyethoxy)benzene, etc.), aliphatic carboxylic acids (para-hydroxybenzoic acid, etc.) and the like.

The aforementioned polyethylene terephthalate may be a three-component copolymer. Moreover, it can also be a material recovery or chemical recovery. In addition, for example, Japanese Patent Laid-Open No. 2004-270097 and Japanese Patent Laid-Open Obtained from the catalyst of the specific phosphorus compound and titanium compound described in Gazette No. 2004-211268.

In the aforementioned polytrimethylene terephthalate, polyethylene terephthalate, polybutylene terephthalate, etc., micropore formers, cationic dyeing agents, coloring inhibitors, thermal stabilizers, etc. may also be included. One or two or more kinds of agents, optical brighteners, matting agents, colorants, hygroscopic agents, and inorganic fine particles.

The aforementioned conjugated fibers can be produced by, for example, Japanese Laid-Open Manufactured by the method described in Gazette 2009-46800.

In the present invention, the aforementioned stretchable fibers can be included in the fabric as a single yarn, or can also be included in the fabric as a composite yarn (air-blended yarn, multi-twisted yarn, etc.) with other yarns (eg, non-crimped yarn, etc.). .

Among the aforementioned stretchable fibers or other yarns, the preferred single fiber fineness is 0.00002 to 3.0 dtex (more preferably 0.1 to 2.0 dtex, particularly preferably 0.3 to 1.0 tex) in order to obtain excellent down puncture resistance. within the range. It is preferred that all fibers constituting the fabric have a single fiber fineness within the above-mentioned range.

Further, among the fibers constituting the woven fabric, the cross-sectional shape of the single fiber includes an oval cross-section, a triangle, a quadrangle, a cross, a flat, a waisted flat, an H-shape, a W-shape, etc., in addition to a circular cross-section.

In addition, among the fibers constituting the fabric, as the total fineness and the number of filaments, in terms of obtaining excellent down puncture resistance, it is preferable that the total fineness is 20~220dtex (more preferably 20~50dtex), and the number of filaments is 1~ Within the range of 300 (preferably 50~300).

The fibers (other yarns) other than the stretchable fibers constituting the fabric are not particularly limited, but are preferably polyester-based fibers made of polyester. Examples of the polyester include terephthalic acid as the main acid component, and alkanediols having 2 to 6 carbon atoms selected from the group consisting of ethylene glycol, trimethylene glycol, and tetramethylene glycol. , At least one kind of diol of the group consisting of pentamethylene glycol and hexamethylene glycol, and particularly preferably polyester having ethylene glycol as the main diol component.

The polyester may contain a small amount (usually 30 mol % or less) of a copolymerization component as required. In this case, as the bifunctional carboxylic acid other than terephthalic acid to be used, for example, isophthalic acid, naphthalene dicarboxylic acid, diphenyl dicarboxylic acid, diphenoxyethane dicarboxylic acid, β-Hydroxyethoxybenzoic acid, p-hydroxybenzoic acid, 5-sodium sulfonate isophthalic acid, adipic acid, sebacic acid, 1,4-cyclohexanedicarboxylic acid, aromatic and aliphatic two Functional carboxylic acid. In addition, as diol compounds other than the above-mentioned diols, for example, aliphatic, alicyclic, and aromatic compounds such as cyclohexane-1,4-dimethanol, neopentyl glycol, bisphenol A, and bisphenol S can be exemplified. Diol compounds and polyoxyalkylene glycols, etc.

The aforementioned polyester can be synthesized by any method. For example, if the case of polyethylene terephthalate is described, the esterification reaction of terephthalic acid and ethylene glycol can be carried out directly, or terephthalic acid such as dimethyl terephthalate can be The first-stage reaction of esterification of lower alkyl formate with ethylene glycol, or the reaction of terephthalic acid with ethylene oxide to generate glycol esters of terephthalic acid and/or oligomers thereof, and The reaction product of the first stage is heated under reduced pressure, and the polycondensation reaction is carried out until the reaction of the second stage of the desired polymerization degree is achieved, and the product is produced. Also, it can be polyester for material recycling or chemical recycling. In addition, aliphatic polyesters such as polylactic acid and sterically complex polylactic acid may also be used.

The aforementioned polyester may also contain a matting agent (titanium dioxide), a micropore-forming agent (metal organic sulfonic acid salt), a coloring inhibitor, a heat stabilizer, a flame retardant (antimony trioxide), a fluorescence enhancer, as required. One or more of whitening agent, coloring pigment, antistatic agent (sulfonic acid metal salt), hygroscopic agent (polyoxyalkylene glycol), antibacterial agent, and other inorganic particles. In particular, in the polyester weight comparison, if the matting agent is contained in an amount of 0.2% by weight or more (preferably 0.2-2.5% by weight), it is better to add UV shielding effect and anti-permeability to the fabric with low air permeability. .

The low-air-permeability fabric of the present invention can be woven using a common loom (eg, a water jet chamber, etc.) after forming a composite yarn by using the aforementioned stretchable fibers and other yarns as required. In this case, the weave structure of the fabric is not limited, and a plain weave, a twill weave, a satin weave, and the like can be preferably exemplified. Also, it can be double weave. Among them, in terms of obtaining excellent down puncture resistance, a flat weave or an anti-tear weave weave with the most weave points is preferred. In the fabric, within the scope of not impairing the purpose of the present invention, dyeing finishing, water absorption processing, water repellent processing, raising processing, ultraviolet shielding or antibacterial agent, deodorant, insect repellant, Various processing for imparting functions such as light accumulator, retroreflector, negative ion generator, etc. In addition, when the conjugate fiber is included in the fabric, the potential crimp of the conjugate fiber is made apparent (coil shape) by the heat history of dyeing processing or the like.

Furthermore, in order to obtain excellent stretchability, the fabric is preferably not subjected to coating processing for waterproofing (not water repellent processing, but resin processing for improving waterproofness) or lamination processing. In particular, it is preferable that neither the coating process for waterproofing nor the lamination process is performed. However, it is preferable to implement water repellent processing.

At this time, in the water-repellent process, the type of the water-repellent agent is not particularly limited. For example, a fluorine-based compound can be exemplified as a water-repellent agent in consideration of the environment, such as a hydrocarbon-based compound and a silicone-based compound. According to needs, it is better to mix antistatic agent, melamine resin and catalyst to make a processing agent with a water repellent concentration of about 3 to 15% by weight, and use the processing agent with a pickup rate of about 50 to 90%. cloth surface. As a method of treating the fabric surface with a processing agent, a paddle method, a spray method, etc. can be exemplified. Among them, the paddle stirring method is preferred for permeating the processing agent into the fabric. The aforementioned adsorption rate is the weight ratio (%) of the processing agent with respect to the weight of the fabric (before applying the processing agent).

In addition, at least one of the steps before or after the water repellent processing step can be carried out by conventional dyeing processing, alkali weight reduction processing, and fluffing processing. In addition, an ultraviolet shielding agent, an antibacterial agent, a deodorant, an insect repellant, a light storage agent, a retroreflective agent, an anion generator, etc. may be additionally applied. In addition, when the composite fiber is included in the fabric, the potential crimp of the composite fiber is made apparent (coil shape) by the heat history of dyeing processing or the like.

In addition, in the low-air permeability fabric of the present invention, in terms of obtaining excellent down puncture resistance, it is preferable that the warp coverage factor is in the range of 800-1500 and the weft coverage factor is in the range of 700-1200. Here, the warp coverage factor (warp CF) and the weft coverage factor (weft CF) are defined by the following equations. Warp CF=(DWp/1.1) ^1/2 ×MWp Weft CF=(DWf/1.1) ^1/2 ×MWf [DWp is the warp total fineness (dtex), MWp is the warp weaving density (root/2.54cm), and DWf is The weft yarn total fineness (dtex), MWf is the weft yarn weaving density (root/2.54cm)].

In addition, as the density of the fabric, the warp density is preferably 180 pieces/2.54cm or more (preferably 190 to 400 pieces/2.54cm) and the weft density is 100 pieces/2.54cm or more (preferably 110 to 300 pieces/2.54cm).

In addition, the basis weight of the fabric is preferably 100 g/m ² or less (more preferably 10 to 95 g/m ² ) in terms of lightness.

In this way, the obtained low-air-permeability fabric is not only excellent in down puncture resistance, but also in tension. At this time, in the fabric, the elongation in the warp direction and/or the weft direction is preferably 17.5% or more (more preferably 20-30%).

In addition, in the fabric, the tear strength in the warp direction or the weft direction (preferably the warp direction and the weft direction) is preferably 7N or more. Among them, the tear strength is determined by Measured by JIS L 1096-2010 8.17 D method.

In addition, in the fabric, the slip resistance is preferably 3 mm or less. Here, the slip resistance was measured by JIS L 1096-2010 8.23 B method (load 117.7N).

In addition, in the fabric, GB T 12705.1-2009 Textiles - Test method for down shedding of textiles - Part 1: Down shedding due to friction method is preferably less than 50 pieces. And, among the fabrics, the Rotating Box IDFL20-1 (modified FTMS191-5530) is preferably 5 (0-5 particles).

Next, the fiber product of the present invention is a fiber product selected from the group consisting of down jackets, down jackets, quilts, sleeping bags and sportswear using the aforementioned low-air-permeability fabrics.

Since this fiber product uses the aforementioned low-air-permeability fabric, it is excellent not only in down puncture resistance but also in tension.

In addition, the aforementioned low-air permeability fabric can be used for football shirts, golf shirts, tennis shirts, basketball shirts, billiard shirts, badminton shirts, jogging shirts, football pants, tennis pants, basketball pants, billiard pants, badminton pants, jogging pants, Various fiber products such as golf pants, various sports underwear, various sports underwear, sweaters, T-shirts, knitted sweaters, sweatshirts, windbreakers, medical clothing (gowns, etc.), dust jackets, etc. [Example]

Next, the examples and comparative examples of the present invention will be described in detail, but the present invention is not limited to these. In addition, each measurement item was measured by the following method. (1) Cover factor The cover factor CF of the fabric was calculated by the following formula. Warp CF=(DWp/1.1) ^1/2 ×MWp Weft CF=(DWf/1.1) ^1/2 ×MWf [DWp is the warp total fineness (dtex), MWp is the warp weaving density (root/2.54cm), and DWf is The weft yarn total fineness (dtex), MWf is the weft yarn weaving density (root/2.54cm)]. (2) Elongation of fabric The elongation of fabric was measured by JIS L 1096-2010 8.16B method. (3) Tear strength of fabric The tear strength (N) was measured by JIS L 1096-2010 8.17D method. (4) Slip resistance of fabric The slip resistance of fabric was measured by JIS L 1096-2010 8.23B method (load 117.7N). (5) Feather shedding of fabrics 1 Determined by GB T 12705.1-2009 Test method for down shedding of textiles, Part 1: by friction method. (6) Down shedding property of fabric 2 Measured by Rotating Box IDFL20-1 (modified FTMS191-5530) (0-5 particles). (7) Basis weight of fabric The basis weight (g/m ² ) was measured by JIS L 1096-2010 8.3. (8) Water repellency of fabric The water repellency (grade) was measured by JIS L 1092-2009 7.2 Water permeability test (spray method). (9) Air permeability of fabric Air permeability (cm ³ /cm ² ･s) was measured by JIS L1096-2010 8.26.1 A method (Frazir method). In addition, the number of samples was 5, and the average value was calculated|required.

[Example 1] Semi-dull polyethylene terephthalate multifilament yarn (total fineness 22 dtex/72 fil, single fiber fineness 0.31 dtex) as a warp yarn, false twist crimped yarn, as a weft yarn Semi-dull polyethylene terephthalate multifilament false twist crimped yarn (total fineness 22dtex/72fil, single fiber fineness 0.31dtex) and polyurethane fiber (total fineness 22dtex/1fil, elastic fiber) The 2.6-fold stretched mixed filaments obtained by interleaving were used to weave a flat-structure fabric with a water jet chamber loom. Then, the fabric was dyed with disperse dye at 130° C.×30 minutes, and the following water repellent treatment was performed. The water repellent process was performed by using the following processing agent, extruding the liquid at an adsorption rate of 80%, drying at 130° C. for 3 minutes, and then performing heat treatment at 170° C. for 45 seconds. <Processing agent composition> ･5.0 wt% of non-fluorine water repellent (Nichika Chemical Co., Ltd., NeoseedNR-7080, hydrocarbon-based compound) ･Melamine resin 0.3 wt% (Smitex resin M-3, manufactured by Sumitomo Chemical Co., Ltd. ) ･Catalyst 0.3wt% (Sumitomo Chemical Co., Ltd., Smitex Accelerator ACX) ･Water 94.4wt% About the fabric thus obtained, the basis weight is 68g/m ² , the warp density is 282 threads/2.54cm, and the weft density is 206 Root/2.54cm, coverage factor is 1261 in warp, 1084 in weft, 2345 in total, 1% warp elongation, 23% weft elongation, water repellency grade 4, air permeability 0.5cm ³ /cm ² ･s, tear strength is The warp and weft are both above 7N, and the slip resistance is below 3mm. According to GB T 12705.1-2009 Textiles, Textiles, Down and Down Falling Test Method Part 1: Friction Method, Down Falling Below 50, Rotating Box IDFL20-1 (Improved FTMS191-5530) It is 5 (0-5 particles), and it is a low-air permeability fabric that is not only excellent in down puncture resistance but also in tension.

[Example 2] The semi-matte polyamide multifilament false-twist crimped yarn (total fineness 22dtex/48fil, single fiber fineness 0.46dtex) as the warp yarn and the semi-matte polyamide multifilament false-twist crimped yarn as the weft yarn ( Total fineness 22dtex/48fil, single fiber fineness 0.46dtex) and polyurethane fiber (total fineness 22dtex/1fil, elastic fiber) 2.6 times stretched mixed fiber yarn obtained by interleaving, weaving by water jet chamber loom Flat weave fabric. Then, the fabric was dyed with an acid dye at 98° C.×30 minutes, and the same water repellent treatment as in Example 1 was performed.

The fabric thus obtained has a weight per unit area of 59 g/m ² , a warp density of 283 threads/2.54 cm, a weft density of 193 threads/2.54 cm, a coverage factor of 1266 in warp, 1003 in weft, 2269 in total, 2% warp elongation, and weft elongation. Degree of 26%, water repellency grade 4, air permeability 0.6cm ³ /cm ² ･s, tear strength at warp and weft are both above 10N, slip resistance below 3mm, by GB T 12705.1-2009 Textiles and textiles down shedding test The first part of the method: the down shedding of the friction method is less than 50, and the IDFL20-1 (modified FTMS191-5530) of the rotary box is 5 (0-5 particles), which is a low-pass not only anti-prickly but also excellent in tension. Breathable fabric.

[Example 3] False twist crimping yarn (total fineness 39dtex/144fil, single fiber fineness 0.27dtex) as the warp yarn, polyethylene terephthalate multifilament as the warp yarn, polyethylene terephthalate and polyethylene terephthalate as the weft yarn. The side-by-side composite fiber (total fineness 56dtex/32fil, single fiber fineness 1.75dtex) made of propylene terephthalate was woven into a flat weave fabric with a water jet chamber loom.

Then, the fabric was dyed with disperse dye at 130° C.×30 minutes, and the same water repellency and calendering as in Example 1 were performed.

The fabric thus obtained has a weight per unit area of 82 g/m ² , a warp density of 230 pieces/2.54 cm, a weft density of 125 pieces/2.54 cm, a cover factor of 1361 in warp, 884 in weft, 2245 in total, 1% warp elongation, and weft elongation. Degree of 21%, water repellency grade 4, air permeability 0.3cm ³ /cm ² ･s, tear strength at warp and weft are both above 10N, slip resistance below 3mm, according to GB T 12705.1-2009 Textiles and textiles down shedding test The first part of the method: the down shedding of the friction method is less than 50, and the IDFL20-1 (modified FTMS191-5530) of the rotary box is 5 (0-5 particles), which is a low-pass not only anti-prickly but also excellent in tension. Breathable fabric.

[Example 4] The false twist crimping yarn (total fineness 56dtex/72fil, single fiber fineness 0.78dtex) as the warp yarn, polyethylene terephthalate multifilament as the warp yarn, polyethylene terephthalate and polyethylene terephthalate as the weft yarn. The side-by-side composite fiber (total fineness 56dtex/32fil, single fiber fineness 1.75dtex) made of propylene terephthalate was woven into a flat weave fabric with a water jet chamber loom. Then, the fabric was dyed with disperse dye at 130° C.×30 minutes, and the same water repellency and calendering as in Example 1 were performed.

The fabric thus obtained has a weight per unit area of 94 g/m ² , a warp density of 200 threads/2.54 cm, a weft density of 129 threads/2.54 cm, a coverage factor of 1414 in warp, 912 in weft, 2326 in total, 2% warp elongation, and weft elongation. 20% water repellency, grade 4 water repellency, 0.5cm ³ /cm ² ･s air permeability, tear strength above 10N in both warp and weft, and slip resistance below 3mm, according to GB T 12705.1-2009 Down drop test for textiles The first part of the method: the down shedding of the friction method is less than 50, and the IDFL20-1 (modified FTMS191-5530) of the rotary box is 5 (0-5 particles), which is a low-pass not only anti-prickly but also excellent in tension. Breathable fabric.

[Example 5] The yarn is made of bright polyethylene terephthalate multifilament false twist crimping yarn (total fineness 56dtex/144fil, single fiber fineness 0.39dtex) as warp yarn, polyethylene terephthalate and polyethylene terephthalate as weft yarn The side-by-side composite fiber made of propylene phthalate (total fineness 56dtex/48fil, single fiber fineness 1.17dtex) was woven into a flat weave fabric with a water jet chamber loom. Then, the fabric was dyed with disperse dye at 130° C.×30 minutes, and the same water-repellent treatment as in Example 1 was performed.

The fabric thus obtained has a weight per unit area of 96 g/m ² , a warp density of 204 pieces/2.54 cm, a weft density of 132 pieces/2.54 cm, a coverage factor of 1442 in warp, 933 in weft, 2375 in total, 0.2% warp elongation, and weft elongation. Degree of 21%, water repellency grade 4, air permeability 0.9cm ³ /cm ² ･s, tear strength at warp and weft are above 10N, slip resistance below 3mm, according to GB T 12705.1-2009 Textiles and textiles down shedding test The first part of the method: the down shedding of the friction method is less than 50, and the IDFL20-1 (modified FTMS191-5530) of the rotary box is 5 (0-5 particles), which is a low-pass not only anti-prickly but also excellent in tension. Breathable fabric.

[Example 6] False-twist crimped yarn (total fineness 22dtex/72fil) of semi-matte polyethylene terephthalate multifilament as warp yarn and false twist of polyethylene terephthalate multifilament as weft yarn Silk (total denier 22 dtex/72 fil), flat weave fabric woven on a water jet chamber loom. Then, the fabric was dyed with disperse dye at 130° C.×30 minutes, and the same water repellency and calendering as in Example 1 were performed.

The fabric thus obtained has a weight per unit area of 61 g/m ² , a warp density of 242 pieces/2.54 cm, a weft density of 214 pieces/2.54 cm, a coverage factor of 1082 in warp, 957 in weft, 2039 in total, 1% warp elongation, and weft elongation. 3% degree of water repellency, 4 grades of water repellency, 0.3cm ³ /cm ² ･s of air permeability, tear strength above 10N in both warp and weft, and slip resistance below 3mm, according to GB T 12705.1-2009 Textiles and Textiles Down Falling Test The first part of the method: the down shedding of the friction method is less than 50, and the IDFL20-1 (modified FTMS191-5530) of the rotary box is 5 (0-5 particles), which is a low-pass not only anti-prickly but also excellent in tension. Breathable fabric.

[Comparative Example 1] False-twist crimping yarn (total fineness 56dtex/72fil) of semi-matte polyethylene terephthalate multifilament as warp yarn, polyethylene terephthalate and polypropylene terephthalate as weft yarn The side-by-side composite fiber (total fineness 56dtex/32fil) made of ester was used to weave a flat weave fabric with a water jet chamber loom. Then, the fabric was dyed with disperse dye at 130° C.×30 minutes, and the same water repellency and calendering as in Example 1 were performed.

The fabric thus obtained has a weight per unit area of 86 g/m ² , a warp density of 149 pieces/2.54 cm, a weft density of 95 pieces/2.54 cm, a coverage factor of 1053 in warp, 672 in weft, 1725 in total, 1% warp elongation, and weft elongation. Degree of 21%, water repellency grade 4, air permeability 1.6cm ³ /cm ² ･s, tear strength at warp and weft are above 7N, slip resistance below 3mm, according to GB T 12705.1-2009 Textiles and textiles down shedding test The first part of the method: 74 down feathers fell off by friction method, the IDFL20-1 (modified FTMS191-5530) of the rotary box was 3 (0-5 particles), and the fabric was excellent in tension but poor in resistance to down puncture. [Industrial Availability]

According to the present invention, it is possible to obtain a low-ventilation fabric with reduced blow-out of cotton or down, and a low-ventilation fabric and fiber product excellent not only in down puncture resistance but also in tension, which is of great industrial value.

Claims (13)

A low air permeability fabric characterized by a low air permeability fabric having an air permeability of 1.0 cm ³ /cm ² ･s or less, and comprising stretchable fibers. The low-air-permeability fabric of claim 1, wherein the elongation in the warp direction or the weft direction of the aforementioned fabric is 17.5% or more. The low-air permeability fabric of claim 1 or 2, wherein the fabric is in accordance with GB T 12705.1-2009 Textiles - Test method for down shedding of textiles Part 1: The shedding of down due to friction method is less than 50 pieces. The low-air-permeability fabric according to any one of claims 1 to 3, wherein the stretchable fiber is a polyurethane fiber, a composite fiber with two components joined in a side-by-side type or an eccentric core-sheath type, and a false twist crimping process silk or polytrimethylene terephthalate. The low air permeability fabric according to any one of claims 1 to 4, wherein the fabric has a warp coverage factor of 800-1500 and a weft coverage factor of 700-1200, wherein the warp coverage factor (warp CF) and weft coverage The coefficient (weft CF) is defined by the following formula, Warp CF=(DWp/1.1) ^1/2 ×MWp Weft CF=(DWf/1.1) ^1/2 ×MWf [DWp is the total fineness of the warp (dtex), and MWp is Warp weave density (root/2.54cm), DWf is the total weft denier (dtex), MWf is the weft weave density (root/2.54cm)]. The low air permeability fabric of any one of claims 1 to 5, wherein the fabric has a flat weave or a ripstop taffetas weave. The low-air permeability fabric of any one of claims 1 to 6, wherein the fabric is subjected to water repellent processing. The low-air-permeability fabric according to any one of claims 1 to 7, wherein the fabric has not been subjected to a coating process or lamination process for waterproofing. The low-air permeability fabric according to any one of claims 1 to 8, wherein the fabric is not calendered. The low-air-permeability fabric of any one of claims 1 to 9, wherein the tear strength of the fabric in the warp direction or the weft direction is 7N or more, Here, the tear strength is measured by the JIS L 1096-2010 8.17D method. The low-air permeability fabric of any one of claims 1 to 10, wherein the fabric has a slip resistance of 3 mm or less, The slip resistance was measured by the JIS L 1096-2010 8.23B method (load 117.7N). The low air permeability fabric of any one of claims 1 to 11, wherein the fabric, Rotating Box IDFL20-1 (modified FTMS191-5530) is 5 (0-5 particles). A fibrous product using the low-ventilation fabric as claimed in any one of claims 1 to 12 selected from the group consisting of down jackets, down jackets, quilts, sleeping bags and sportswear.