JP2000336544A - Moisture permeable waterproof nylon filament fabric - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a moisture permeable waterproof nylon filament fabric having softness and bulkiness and excellent in moisture permeable waterproof by forming a moisture permeable waterproof resin coat on one side of a fabric woven using a heteroshrinkable combined filament yarn. SOLUTION: By commingling nylon 6 filaments with nylon 6-nylon 66 copolymer filaments when spinning by extruding 30-70 wt.% nylon 6 and 70-30 wt.% nylon 6-nylon 66 copolymer comprising 70-98 wt.% nylon 6 repeating unit and 30-2 wt.% nylon 66 repeating unit from separate nozzles in the same spinneret so as for the difference in a birefringence (Δ-n) between both filament yarns and a fineness ratio between their single filaments to be respectively <=10×10-3 and <=3.0, a heteroshrinkable combined filament yarn composed of a nylon 6 low shrinkage filaments and a nylon 6-nylon 66 copolymer high shrinkage filaments is obtained. By forming a moisture permeable waterproof resin coat, which is polyurethane-based, polytetrafluoroethylene-based or the like, on one side of a fabric woven using the heteroshrinkable combined filament yarn and, if necessary, by superimposing a coarsely knitted fabric on the coat surface to form a trilaminar structure, a moisture permeable waterproof nylon filament fabric having a waterproof pressure of >=0.2 kg/cm2 and a water vapor transmission rate of >=5,000 g/(m2.24 hr) is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a moisture-permeable and waterproof nylon fabric having a soft, swelling feeling and excellent moisture-permeability and waterproofness.

[0002]

2. Description of the Related Art Conventionally, heat treatment is performed after weaving a nylon different shrinkage mixed fiber obtained by mixing two or more kinds of nylon filament yarns having different heat shrinkage ratios, or two or more kinds of polyamide fibers having a yarn length difference. It is well known that weaving a woven fabric using a processed yarn consisting of a soft and swelling nylon fabric.

For example, Japanese Patent Publication No. Sho 58-30424 or Japanese Patent Publication No. Sho 58-31414 proposes a mixed fiber which is characterized in that a fabric having good bulkiness can be obtained. Japanese Patent Publication No. 1-2577 discloses a low-shrink filament yarn made of nylon 6 and nylon 6 / nylon 6
The figure shows a bulky mixed fiber yarn obtained by subjecting a high-shrink yarn made of a 6-copolymer to a Taslan processing and a heat treatment.

In Japanese Patent Publication No. Hei 4-2696, a high-density woven fabric is formed by using a two-layered crimped yarn composed of two or more kinds of polyamide fibers having a yarn length difference, and a water-repellent resin is added to the woven fabric. A method for obtaining a soft, bulging water-repellent fabric is disclosed.

[0005] Japanese Patent Application Laid-Open No. 8-337974 discloses an example of applying a moisture-permeable waterproof film to a nylon woven fabric by using a moisture-permeable waterproof fabric obtained by coating a synthetic fabric mainly composed of polyurethane resin on a fiber fabric. An example is shown in which the resin layer contains fine particles having a particle diameter 2 to 4 times that of the resin film, and the fine particles give a dry feeling to the resin surface.

[0006]

However, these soft and bulging fabrics of the prior art have not been shown to have a moisture permeable and waterproof effect. In addition, nylon fabrics exhibiting a moisture-permeating and waterproofing effect cannot provide a soft feeling and a swelling feeling.

[0007] In view of the background of the prior art, the present invention provides
While maintaining the excellent fabric properties of nylon fabric, we will provide a nylon moisture-permeable waterproof fabric that is soft, swelling, has excellent moisture permeability and waterproofness, and has excellent adhesion between the fabric and moisture-permeable waterproof membrane. Is what you do.

[0008]

The present invention employs the following means in order to solve the above-mentioned problems. That is, the nylon moisture permeable waterproof fabric of the present invention is a woven fabric constituted by using a nylon different shrinkage mixed fiber yarn composed of a nylon high shrinkage filament yarn and a nylon low shrinkage filament yarn. Characterized by having a conductive resin film.

[0009]

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a nylon moisture-permeable waterproof fabric which is soft, swelling and excellent in moisture-permeable and waterproof while maintaining the excellent fabric characteristics of the nylon fabric. Investigating and combining a fabric made of nylon different shrinkage mixed fiber consisting of a nylon high shrinkage filament yarn and a nylon low shrinkage filament yarn with a moisture-permeable waterproof resin coating, surprisingly, this problem was solved all at once. That is what we have determined. The nylon woven fabric according to the present invention is a woven fabric composed of a nylon different shrinkage mixed yarn consisting of a nylon high shrinkage filament yarn and a nylon low shrinkage filament yarn, that is, preferably nylon 6 / nylon 66 as the nylon high shrinkage filament yarn. The copolymer filament yarn is constituted by using a nylon 6 filament yarn as a nylon low shrink filament yarn.

As such a nylon differentially shrinkable mixed yarn, a nylon 6 filament yarn and a nylon 6 / nylon 6 composed of 70 to 98% by weight of a nylon 6 repeating unit and 2 to 30% by weight of a nylon 66 repeating unit.
A different shrinkage mixed fiber yarn composed of 6 copolymer filament yarns is used.

As shown in FIG. 1, such a different shrinkage mixed fiber is preferably produced by simultaneously melt-spinning a nylon 6 / nylon 66 copolymer and nylon 6 with the same die in terms of cost reduction. In the case of nylon 6 / nylon 66 copolymer and nylon 6, the melting point of nylon 6 is about 220.
° C, which is close to the melting point of the nylon 6 / nylon 66 copolymer of about 200 ° C, so that the spinning properties are good. On the other hand, when nylon 66 is used, the melting point of nylon 6 / nylon 66 copolymer is about 200 ° C., whereas the melting point of nylon 66 is about 260 ° C., which is a large difference. Must be adjusted to the melting point of nylon 66, thereby deteriorating the spinnability. Nylon 6 /
98 nylon 6 repeating units of the nylon 66 copolymer
If it exceeds 10% by weight, the difference in shrinkage from the other nylon 6 filament yarn developed in the dyeing process is not sufficient,
When made into a woven fabric, a soft touch and swelling cannot be obtained. When the content of the nylon 6 repeating unit is less than 70% by weight, the difference in physical properties from the nylon 6 filament yarn increases,
The spinnability with the same spinneret deteriorates.

The mixing ratio of one nylon 6 filament yarn and the other nylon 6 / nylon 66 copolymer filament yarn forming the mixed fiber is 30 to 70% by weight of nylon 6 filament yarn and nylon 6 / nylon 66 copolymer. The content of the filament yarn is 70 to 30% by weight.

The mixing ratio of nylon 6 filament yarn is 7
If it exceeds 0% by weight, a soft touch and swelling cannot be obtained in the case of fabric. If the mixing ratio of the nylon 6 filament yarn is less than 30% by weight, the color fastness deteriorates.

The difference in the birefringence (Δn) between the nylon 6 filament yarn of the mixed fiber constituting the woven fabric and the nylon 6 / nylon 66 copolymer filament yarn is 10 × 10 ⁻³ or less. If the birefringence (Δn) difference exceeds 10 × 10 ⁻³ , the texture of the woven fabric becomes coarse and hard, and yarn breakage and fluff occur frequently during yarn production.

[0015] The difference in single fiber fineness between the two filament yarns is 3.0 or less. This single fiber fineness difference is 3.
If it exceeds 0, the difference in the polymer cooling speed after the discharge of the spinneret becomes large, and the spinning performance with the same spinneret deteriorates.

A woven fabric made of such a nylon different shrinkage mixed yarn is a soft and swelled woven fabric by expressing a difference in shrinkage between the two yarns in a dyeing process after weaving.

[0017] The nylon moisture-permeable waterproof fabric of the present invention is obtained by applying a moisture-permeable waterproof resin coating to one surface of a nylon hetero-shrinkage mixed fiber yarn comprising a high shrinkage filament yarn and a low shrinkage filament yarn. Manufactured.

The resin processing agent and the processing method for imparting such moisture permeability and waterproofness are not particularly limited, and conventionally known processing agents and processing methods can be used.

In particular, in a woven fabric composed of nylon different shrinkage mixed yarns, a low-shrinkage yarn floats on the woven fabric surface in a loop shape, which contributes to the softness and swelling of the woven fabric. It strengthens the adhesion with the resin material for imparting waterproofness. Nylon fabrics are often subjected to moisture permeation waterproofing due to their good adhesion to resin-processed materials for imparting moisture permeation waterproofing.However, plain fabrics using nylon raw silk are often Since the adhesive strength with the resin material for imparting moisture and water resistance is weak, it is necessary to select a resin material for strengthening the adhesive force. As described above, the nylon moisture permeable waterproof fabric of the present invention is transparent. Since the adhesive strength with the resin processing material for imparting moisture and waterproofness is strong, it is almost unnecessary to select a resin processing material for strengthening the adhesive force.

For example, a method in which a polyurethane solution obtained by dissolving a polyurethane-based compound in a water-soluble solvent is coated on the above-mentioned woven fabric and the resulting gel is wet-gelled, and the polyurethane-based compound is directly applied to the woven fabric. Then, a method of manufacturing by performing drying and heat treatment, a method of manufacturing a porous film of a polytetrafluoroethylene polymer, or a film of a polyurethane-based compound and bonding the film to the fabric is adopted. it can.

Furthermore, a method of bonding a knitted fabric having a low density to the surface of the nylon moisture-permeable waterproof fabric obtained by the above method, which has a resin coating, to obtain a moisture-permeable waterproof fabric having a three-layer structure of a fabric-resin coating-knitted fabric. and so on.

The moisture-permeable waterproof nylon fabric of the present invention preferably has a moisture resistance of 0.2 kg / cm ² or more and a moisture permeability of 5000 g / m ² · 24 hours or more. If the water pressure resistance is 0.2 kg / cm ² or more, when worn in light rain, the rain hardly penetrates through the fabric. The moisture permeability is 5000g / m
If ^2-24 hours or more, the sweat by little motion to be released as steam to the outside of the garment through the fabric, discomfort when worn can be reduced. More preferably, the water pressure resistance is 0.5
Kg / cm ² or more and moisture permeability is 6000 g / m ² · 24 hours or more.

[0023]

The present invention will be described below in more detail with reference to examples. In addition, the measuring method and the calculating method of the evaluation value in an Example are as follows.

[Hydraulic pressure resistance] According to JIS L-1092 high water pressure resistance method.

[Moisture Permeability] JIS L-1099 (A-
According to 1).

[Birefringence (Δn)] The retardation and diameter of the single fiber were measured with a polarizing microscope manufactured by Nippon Kogaku Co., Ltd., and the birefringence was calculated.

[Nylon relative viscosity ηr] A sample was dissolved in 98% sulfuric acid to a concentration of 1% by weight, and measured at 25 ° C. with an Ostwald viscometer.

[Light fastness] According to JIS L-0842 carbon arc lamp light fastness test method.

[Washing Fastness] A washing fastness test method is performed according to JIS L-0844 rounder meter method.

[Softness] The softness of Comparative Example 1 was evaluated by sensory evaluation. The evaluation criteria are as follows.

Very soft samples were evaluated as ◎, obviously soft ones as △, soft ones as △, and those with almost no difference as x.

[Swelling feeling] The swelling feeling of Comparative Example 1 was compared with the sensory evaluation. The evaluation criteria are as follows.

◎: extremely swelling, ○: obvious swelling, △: swelling, x: almost no difference.

[Peel Strength] Five test pieces each of 2.5 cm × 15 cm were taken in the vertical and horizontal directions, and the A line was placed parallel to the short side at a distance of 5 cm, and the B line was further removed at a position 5 cm away. Pull. The woven fabric and the moisture-permeable waterproof membrane are manually peeled off to the A-line in the long side direction of the test piece.

The gripping interval of the constant-speed extension type tensile tester with the self-recording device is set to 5 cm, and the peeled portion of the test piece is fixed so that the line A is almost at the center of the upper and lower clamps.

Peeled to the B line at a tensile speed of 10 cm / min.
Draw a curve of peel distance and peel strength.

From the drawn curve, three peaks are read from the higher peak and three peaks are read from the lower peak, and their average value (g / cm) is determined. The average value is expressed by the average value of five test pieces. Example 1 Nylon 6 having a relative viscosity ηr of 2.62 and a nylon 6 / nylon 66 copolymer having a relative viscosity ηr of 2.77 and a copolymerization ratio of 85/15 were prepared by mixing 24 holes in the outer row and the inner circumference. Row 1
Using a spinneret having two holes, nylon 6 was melt-discharged from the outer peripheral hole and nylon 6 / nylon 66 copolymer was discharged from the inner peripheral hole at a discharge weight ratio of 60:40 (spinning temperature 270).
° C). After lubrication and confounding, take off with a non-heated roller,
The film was stretched 1.5 times with a heating roller at 170 ° C. and wound at a winding speed of 4000 m / min to obtain a 70-denier, 36-filament mixed fiber.

The obtained mixed yarn was used for warp and weft, the warp was glued without additional twisting, and the weft was woven with a water jet loom without additional twisting. At this time, the fabric structure was 2/1 twill, and the fabric density was 119 warp / 2.54.
cm and a weft density of 80 / 2.54 cm.

The obtained greige was converted to 70
The scouring was performed at ℃ to shrink the woven fabric as the glue was removed. Thereafter, pre-setting at 170 ° C. was performed, dyed at 90 ° C. using a reactive dye with a jet dyeing machine, and dried.

After drying, a water repellent treatment was performed with a fluorine-based water repellent. That is, the above woven fabric was immersed in an aqueous dispersion containing 3% by weight of a water repellent Asahigard AG710 (manufactured by Meisei Chemical Co., Ltd.), picked up to a squeezing ratio of 40%, and subjected to a dry heat treatment at 130 ° C. for 30 seconds with a heat setter. Was done.

Further, a polyurethane solution containing the following components:
150 g / m^TwoIn the ratio of DMF
Aqueous solution containing 10% by weight of methylformamide
Dip the coating solution at 30 ° C for 3 minutes in a solid-liquid bath.
Wet gel, then wash with 80 ° C hot water for 10 minutes
Then, heat-dry at 160 ° C after drying with hot air at 140 ° C
Thus, a nylon moisture-permeable waterproof fabric was obtained. <Polyurethane solution> Polyurethane elastomer Crispon 8166 Dainippon Ink & Chemicals, Inc. 25 parts by weight Fluorine-based water repellent Asahigard AG650 Meisei Chemical Co., Ltd. 5 parts by weight Crosslinking agent Burnock D500 Dainippon Ink & Chemicals, Ltd. 1 wt. Part Clay-organic composite Lucentite STN Corp Chemical Co., Ltd. 0.25 parts by weight DMF (solvent) 100 parts by weight The density of the obtained woven fabric is 144 fibers / 2.54c
m, weft density 98 / 2.54cm, large processing shrinkage,
The difference in shrinkage due to the different shrinkage mixed yarn is fully exhibited and
There is dizziness and the water pressure resistance is 1kg / cm^Two, Moisture permeability
Is 8000 g / m ^Two・ Excellent moisture permeability and waterproof for 24 hours
It was a woven fabric. In addition, the excellent fabric characteristics of nylon long fiber fabric
The dyeability is maintained, and the color fastness can withstand practical use.
there were. Example 2 The same processing as in Example 1 was performed using the same greige machine as in Example 1.
Depending on the agent and method, scouring, presetting, dyeing, drying
Was done.

Next, an adhesive solution containing the following components and having a solid content concentration of 30% was applied in a dot form on one surface of the above-mentioned woven fabric using a gravure coater with an application area of 30%, and was manufactured by Nitto Denko Corporation. A porous film “Microtex” of a polytetrafluoroethylene polymer was bonded.

<Adhesive Solution> 100 parts by weight of CRISVON NT-345 (polyurethane adhesive manufactured by Dainippon Ink and Chemicals, Inc.) 5 parts by weight of BURNACK DN-950 (crosslinking agent manufactured by Dainippon Ink and Chemicals, Inc.) CRISVON Accel T 3 parts by weight (crosslinking accelerator manufactured by Dainippon Ink and Chemicals, Inc.) Next, after drying at 80 ° C. for 2 hours, a heat treatment at 130 ° C. was performed to bond to obtain a nylon moisture-permeable waterproof fabric.

The polytetrafluoroethylene polymer porous membrane has a thickness of 25 microns and a water pressure resistance of 4 kg / cm.
^2. Moisture permeability was 15740 g / m ² · 24 hours, and it was a porous film excellent in moisture permeability and waterproofness.

The obtained nylon woven fabric has a soft woven fabric surface, swelling and a water pressure resistance of 2.2 kg / cm.
^2. Moisture permeability was 9000 g / m ² · 24 hours, and the fabric was excellent in moisture permeability and waterproofness. In addition, the excellent woven fabric characteristics of the nylon long-fiber woven fabric were maintained, and the color fastness was practically usable. Examples 3 and 4 Examples 3 and 4 are high-shrink yarn nylon 6 / nylon 66.
The copolymerization ratio was changed. The copolymerization ratio can be arbitrarily changed depending on the charge ratio of the nylon 6 salt and the nylon 66 salt during the polymerization. Otherwise, a mixed fiber was obtained in the same manner as in Example 1, a greige fabric was prepared in the same manner as in Example 1, and the same dyeing as in Example 1 was performed. The results are shown in Table 1. Examples 5, 6, 7 and 8 In Examples 5, 6, 7 and 8, the mixing ratio of nylon 6 filament yarn and nylon 6 / nylon 66 copolymer filament yarn was changed. Otherwise, Example 1
In the same manner as in Example 1, a mixed fiber was obtained, a green fabric was prepared in the same manner as in Example 1, and the same dyeing processing as in Example 1 was performed. The results are shown in Table 1. Example 9 In Example 9, the single yarn fineness ratio of the nylon 6 filament yarn of Example 5 and the nylon 6 / nylon 66 copolymer filament yarn was changed. Otherwise, a mixed fiber was obtained in the same manner as in Example 1, a greige fabric was prepared in the same manner as in Example 1, and the same dyeing as in Example 1 was performed. The results are shown in Table 1. Comparative Example 1 Using a nylon 6 polymer, a 70-denier, 34-filament multifilament yarn obtained by ordinary direct spinning was used as a warp and a weft, and woven in the same manner as in Example 1. The fabric structure at this time was set in the same manner as in Example 1, and the fabric density was 139 / 2.54c so that the fabric density after dyeing was approximately the same as that in the example.
m, the weft density was set to 93 / 2.54 cm.

The obtained greige was subjected to scouring, preset dyeing, drying, water repellent treatment and moisture permeable waterproof treatment by the same treatment agent and method as in Example 1.

The obtained nylon woven fabric has excellent woven fabric characteristics characteristic of nylon long fiber woven fabric, and has a water pressure resistance of 1 kg / cm ² , a moisture permeability of 8300 g / m ² · 24 hours, and a moisture permeable waterproof property. It was an excellent fabric. However, the fabric texture was not soft and had no swelling.

[0048]

[Table 1]

[0049]

According to the present invention, while maintaining the excellent fabric properties of the nylon fabric, the nylon fabric has softness, swelling, and excellent moisture permeability and waterproofness. An excellent nylon moisture permeable waterproof fabric can be stably provided.

[Brief description of the drawings]

FIG. 1 is a schematic view of a spinning apparatus used for producing a nylon hetero-shrinkage mixed fiber used in the present invention.

[Explanation of symbols]

 1: Extruder 2: Cap 3: Cooling air device 4: Oil supply device 5: Fluid entanglement device 6: Non-heating roller 7: Heating roller 8: Winding device

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4L033 AA08 AB05 AC07 CA10 CA17 CA22 CA50 4L048 AA24 AA34 AA45 AA50 AB09 AB12 AC11 BA01 BA02 CA00 CA08 CA12 CA15 EA01 EB00 EB05

Claims (6)

[Claims] 1. A woven fabric composed of a nylon different shrinkage mixed yarn comprising a nylon high shrinkage filament yarn and a nylon low shrinkage filament yarn, wherein the woven fabric has a moisture-permeable waterproof resin coating on one surface. Characterized nylon breathable waterproof fabric. 2. The nylon high shrink filament yarn is a nylon 6 / nylon 66 copolymer filament yarn.
And the nylon low-shrink filament yarn is nylon 6
The nylon moisture-permeable waterproof fabric according to claim 1, which is a filament yarn. 3. The yarn of claim 6, wherein the nylon 6 / nylon 66 copolymer filament yarn comprises 70 to 98% by weight of nylon 6 repeating units and 30 to 2% by weight of nylon 66 repeating units. A polymer filament, wherein the hetero-shrinkage mixed yarn is a mixture of 30 to 70% by weight of nylon 6 filament yarn and 70 to 30% by weight of nylon 6 / nylon 66 copolymer filament yarn,
In addition, the birefringence (Δn) difference between the two filament yarns is 10
In × 10 ^-3 or less, and the single fiber fineness ratio is 3.0 or less according to claim 1 or 2 nylon waterproof breathable fabric according. 4. The nylon hetero-shrinkage mixed yarn is nylon 6
4. The nylon moisture permeable waterproof fabric according to claim 1, wherein the nylon 6 / nylon 66 copolymer and the nylon 6 / nylon 66 copolymer are simultaneously melt-spun from separate discharge holes of the same spinneret. 5. The nylon moisture permeable waterproof fabric has a water resistance of 0.
2 kg / cm ² or more, moisture permeability 5000 g / m ² · 24
The moisture-permeable and moisture-permeable nylon fabric according to any one of claims 1 to 4, which is for at least one hour. 6. The nylon moisture permeable waterproof fabric according to claim 1, wherein said nylon moisture permeable waterproof fabric is a three-layer structure in which a knitted fabric having a low density is adhered to a surface having said resin coating. .