JP2003041415A - Waterproof clothing article and filling tape for waterproof clothing article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a waterproof clothing article consisting of a non-coating high density fabric, having an excellent washing resistance of waterproof property at a seam part and also excellent moisture permeability, and a filling tape suitable for the same article. SOLUTION: This waterproof clothing article is provided by adhering a filling tape consisting of a heat resistant layer consisting mainly of a polyurethane resin having >=180 deg.C softening point and a hot melt layer having <=120 deg.C softening point at the seam part of the non-coating high density fabric having performances of >=6,500 g/m<2> .24 hrs moisture permeability and 23 degree of water repellency. A hydraulic pressure resistance-holding rate M at the surrounding of the filling tape is >=60%.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof garment made of non-coated high density fabric and a sealing tape for the waterproof garment. More specifically, the present invention relates to a waterproof garment having excellent washing durability in terms of waterproofness of a sewn portion and a sealing tape suitable for the waterproof garment.

[0002]

2. Description of the Related Art Conventionally, as a waterproof cloth, there are a cloth which is rubberized and a cloth which is coated with polyvinyl chloride. Although these waterproof cloths are excellent in waterproofness, they are very stuffy and thus cannot be used for sports clothing. In recent years, by coating a fabric with a polyurethane resin solution, a microporous structure is formed in the coating layer, or a polytetrafluoroethylene film that is stretched to form a microporous structure,
Alternatively, a laminate of a hydrophilic polyurethane film on a cloth has been widely used as a moisture-permeable waterproof cloth for sports clothing materials such as skis, mountains, and athletics. However,
These coated fabrics and laminated fabrics have a problem that the texture is inevitably hard.

To solve this problem, a high-density woven fabric made of ultrafine fibers and having a high cover factor is subjected to a water repellent treatment and a calender treatment, and has a good texture.
Water pressure resistance of 30 kPa and 6500 to 12000 g / m ² ·
A moisture-permeable waterproof cloth having a moisture permeability of 24 hrs has been proposed, and has come to be used for a wide range of clothing applications from the sports field such as skiing, athletics, and mountains to the coating fields such as formal coats and fashion coats.
As described above, the water resistance of the non-coated high-density fabric up to the use of the ultrafine fibers was only at the level of 5 to 10 kPa, but the water pressure resistance was improved to 10 to 30 kPa, which has not been paid attention so far. There has been a demand for a sealing tape that prevents rainwater from entering the seam. However, under the present circumstances, for waterproof garments made of non-coated high-density fabric using ultrafine fibers, there is no sealing tape durable against washing,
There was a drawback that the sealing tape was peeled off by washing and the waterproofness of the stitched portion was significantly lowered.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and is made of a non-coated high-density fabric, which has excellent washing durability in terms of waterproofness of the stitched portion, and An object of the present invention is to provide a waterproof garment having excellent moisture permeability, and to provide a sealing tape suitable for the waterproof garment.

[0005]

The present invention achieves the above-mentioned object, and has a water vapor transmission rate of 6500 g / m ² · 24 hrs.
As described above, a waterproof garment made of a non-coated high-density fabric having a water repellency of 3 or more, wherein a seaming tape mainly composed of a polyurethane resin is adhered to the seam of the waterproof garment, and the following (1 ) A waterproof garment having a water pressure resistance retention rate M around the sealing tape portion of 60% or more, and the sealing tape having the above-mentioned waterproofing composed of a heat resistant layer mainly composed of a polyurethane resin and a hot melt layer. Clothes, the above waterproof clothing having a softening point of the hot-melt layer of the sealing tape of 120 ° C. or lower, and a heat-resistant layer having a softening point of 180 ° C. or higher and a polyurethane foam resin as a main constituent The gist of the present invention is a sealing tape for waterproof clothing, which is characterized in that a hot melt layer having a softening point of 120 ° C. or lower is laminated. Water pressure resistance retention rate around sealing tape part M (%) = [(water pressure resistance around sealing tape part after 20 washes and heat treatment) / (water pressure resistance around sealing tape part before washing)] x 10 0 (1)

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below.
The waterproof garment of the present invention is sewn with a non-coated high density fabric, and a sealing tape is adhered to the sewn portion. The fibers constituting the non-coated high-density fabric used in the present invention are nylon 6 and nylon 66.
Polyamide-based synthetic fibers typified by, or polyester-based synthetic fibers typified by polyethylene terephthalate are mainly used, but polyacrylonitrile-based synthetic fibers, polyvinyl alcohol-based synthetic fibers, semi-synthetic fibers such as triacetate may also be used, Single yarn fineness is 0.3-1.
The total fineness of 2 decitex is preferably in the range of 80 to 170 decitex. Here, if the single yarn fineness is less than 0.3 decitex, the strength required for sports clothing may not be obtained, and if the single yarn fineness exceeds 1.2 decitex, a dense high-density fabric may be formed. It becomes difficult and it becomes difficult to obtain excellent waterproofness, which is not preferable. When the total fineness is less than 80 decitex, it is difficult to obtain sufficient strength and waterproofness because the thickness of the woven fabric is thin, and when the total fineness exceeds 170 decitex, the texture is significantly hardened, which is preferable. Absent.

Next, the non-coated high-density fabric used in the present invention preferably has a fabric cover factor in the range of 2000 to 2800, which is represented by the sum of the cover factors of the warp and the weft. The term "cover factor" as used herein means the degree of voids in the warp or weft seen from the surface of the woven fabric, and the larger the value, the smaller the voids and the denser. The fineness of the warp of the woven fabric is N (decitex), the fineness of the weft is M (decitex), the warp density of the woven fabric is n (book / 2.54 cm), and the weft density is m (book / 2.
54 cm), the cover factor H of the warp is represented by the following formula (2), and the cover factor J of the weft is
It is expressed by equation (3). And fabric cover factor K
Is the sum of the cover factors of warp and weft, and
It is expressed by equation (4). H = n × N ^1/2 (2) J = m × M ^1/2 (3) K = H + J (4) If the cover factor K of the woven fabric is less than 2000, sufficient waterproofness cannot be obtained, which is not preferable. On the other hand, when it exceeds 2800, the water vapor transmission rate is 6500 g / m ² · 2.
It may be 4 hours or less, and the surface quality is deteriorated and the texture is hardened, which is not preferable.

The woven structure of the above-mentioned high density woven fabric is not particularly limited, but a flat structure which is the most dense structure is preferable. Furthermore, the method for producing the above-mentioned non-coated high-density fabric is not particularly limited, but after weaving with a loom such as water jet loom, air jet loom, rapier, scouring, presetting, and dyeing,
Water repellent finish, finishing set, and calendar finish may be performed.

Further, the non-coated high density fabric used for the waterproof garment of the present invention has a moisture permeability of 6500 g / m ² · 24.
It is necessary to have performance equal to or higher than hrs. Here, if the moisture vapor transmission rate is less than 6500 g / m ² · 24 hrs, perspiration during wearing tends to cause stuffiness, which deteriorates comfort. Further, the non-coated high-density fabric used for the waterproof garment of the present invention needs to have a water repellency of 3 or more. Here, if the water repellency is less than 3, sufficient waterproofness cannot be obtained. In order to obtain water repellency with a water repellency of 3 or more, the non-coated high density fabric may contain a fluorine-based water repellent. The term “fluorine-based water repellent” as used herein refers to a compound containing a fluoroalkyl group such as an acrylic ester or a methacrylic ester containing a perfluoroalkyl group. The content of the fluorine-based water repellent is not particularly limited, but in order to obtain good water repellency, it is preferable that the content of the fluorine-based water repellent is 0.2% or more based on the woven fabric. There is no particular limitation on the water-repellent treatment method of containing a fluorine-based water repellent, and a method of impregnating a non-coated high-density fabric with a fluorine-based water repellent treatment liquid, squeezing with a mangle or the like, and then drying, A known method may be used in which the non-coated high-density fabric is contained in a non-coated high-density fabric by a method of spraying the liquid and then drying, and then cured.

In the present invention, it is necessary to sew the above-mentioned non-coated high-density fabric and then thermocompression-bond the sealing tape to the stitched portion. This sealing tape is preferably a laminated product composed of a heat-resistant layer mainly composed of polyurethane and a hot melt layer. The heat-resistant layer of this sealing tape is made of a polyurethane resin obtained by reacting a polyisocyanate and a polyol. However, the polyurethane resin may be 100%, and a polyester resin,
There is no problem even if a resin such as a polyamide resin, a heat-resistant agent, an ultraviolet absorber, a pigment or the like is used in combination. As the polyisocyanate component of the polyurethane resin, an aromatic diisocyanate, an aliphatic diisocyanate and an alicyclic diisocyanate can be used alone or in a mixture thereof. For example, tolylene 2,4-diisocyanate, 4,4′-diphenylmethane diisocyanate,
1,6-hexane diisocyanate, 1,4-cyclohexane diisocyanate, etc. may be used as a main component, and a tri- or higher functional polyisocyanate may be used if necessary. As the polyol component, polyether polyol or polyester polyol is used, and as the polyether polyol, for example, polyethylene glycol,
Polypropylene glycol, polytetramethylene glycol or the like is used, and as the polyester polyol, for example, a reaction product of a diol such as ethylene glycol or propylene glycol and a dibasic acid such as adipic acid or sebacic acid, or a ring-opening polymer such as caprolactone is used. To use. Also,
The heat-resistant layer preferably has a softening point of 180 ° C. or higher. If the temperature is lower than 180 ° C., the tape softens at the temperature at which the sutured portions are bonded together, and the resin layer may be damaged by the pressure during bonding, which is not preferable. Further, the thickness of the heat resistant layer is preferably in the range of 20 to 50 μm.
Here, if the thickness is less than 20 μm, the strength tends to be insufficient so that it is easily broken, and if it exceeds 50 μm, the bonded portion of the suture portion becomes significantly hard, which is not desirable. Further, the heat-resistant layer has a breaking strength of 490 daN or more and a breaking elongation of 300 to 550%.
It is preferable to have the performance of. Here, the breaking strength is 49
If it is less than 0 daN, the film may be damaged during wearing or washing due to insufficient strength and the waterproof property may be deteriorated, which is not preferable. Further, if the breaking elongation is less than 300%, it is difficult to evenly adhere the tape when adhering the sewn portion sewn in a curved line, and wrinkles may occur and it may not be possible to completely stop the eyes. On the other hand, the elongation at break is 55
If it exceeds 0%, the tape may be stretched with a weak tension when adhering the sutured part, and the film may be adhered in a thin state, and the film may be damaged during wearing or washing, leading to deterioration in waterproofness. It is not preferable because it exists.

The hot melt layer of the sealing tape is
Similar to the heat-resistant layer described above, it is composed of a hot-melt adhesive mainly composed of a thermoplastic type polyurethane resin obtained by the reaction of polyisocyanate and polyol, but a heat-resistant agent, an ultraviolet absorber, a pigment, etc. are used in combination. May be. Here, in order to use the thermoplastic polyurethane as a hot-melt adhesive, it is preferable to use polyester as the polyol rather than polyether from the viewpoint of adhesion.
In the present invention, the above-mentioned hot melt layer has a softening point of 120.
It is preferably not higher than 0 ° C, more preferably in the range of 60 to 110 ° C. The softening point of the hot melt layer is 1
When the sealing tape having a temperature of 20 ° C. or less is used, the melt viscosity of the hot melt resin is low at the time of bonding the sealing tape, so that the permeability to the non-coated high density fabric is improved and Since the adhesion durability is increased, a waterproof garment having excellent washing durability in terms of waterproofness of the stitched portion can be obtained. When the softening point is higher than 120 ° C., the hot melt layer has a high melt viscosity at the time of adhesion, and it is difficult for the hot melt layer to permeate into the stitched portion, so that sufficient adhesion durability may not be obtained, which is not preferable. Further, if the softening point is less than 60 ° C., the melt viscosity of the hot melt layer at the time of bonding becomes too low, and the protrusion to areas other than the stitched portion easily occurs,
In addition, blocking tends to occur during storage of the tape, which is not preferable. Regarding the thickness of the hot melt layer,
It is preferably in the range of 40 to 180 μm. When the thickness is less than 40 μm, the penetration of the hot melt resin into the fabric is reduced, and sufficient adhesive strength cannot be obtained, so that the film peels off during wearing or washing, leading to deterioration in waterproofness. However, if it exceeds 180 μm, the adhesive portion of the suture portion becomes significantly hard, which is not desirable.

The width of the above-mentioned sealing tape is 10 mm to 2
It is preferably within the range of 4.5 mm. If the width of the sealing tape is less than 10 mm, it is difficult to completely cover the sutured portion and it is difficult to obtain sufficient waterproofness, which is not preferable. In addition, the width of the nip roller of the hot-air adhesive machine that attaches the sealing tape to the waterproof or moisture-permeable waterproof laminated fabric varies depending on the model, but is 24.5 m.
Since it is m or 28 mm, the width of the sealing tape is 2
If it exceeds 4.5 mm, it exceeds the width of the nip roller of the sealing machine, so that the width of the sealing tape does not adhere completely, and repeated washing tends to cause peeling at the portion of the sealing tape. Therefore, it is not preferable.

The method for producing the sealing tape is not particularly limited, but a known method of forming a film by applying a resin solution using a knife over roll coater and then drying at 100 to 110 ° C. is used. A polyurethane resin solution for a heat-resistant layer is applied on a release paper and dried to form a heat-resistant polyurethane film, and a resin solution prepared by diluting a hot-melt polyurethane with an organic solvent is applied once or twice. It can be obtained by a method such as drying to obtain a laminated product having a hot-melt polyurethane adhesive layer formed thereon, finally separating the laminated product from the release paper, and cutting the laminated product into a desired width with a cutter.
The sealing tape thus obtained has a water pressure resistance of 30 kPa.
It is preferable to have the above.

The waterproof garment of the present invention is characterized in that the water pressure resistance retention rate M around the sealing tape portion represented by the following formula (1) is 60% or more. When the water pressure resistance retention rate M is 60% or less, remarkable peeling is observed at the part of the sealing tape, and the appearance is impaired, and the peeling part of the sealing tape is caught or rubbed during wearing. Etc.
The wearing feeling deteriorates. Water pressure resistance retention rate around sealing tape part M (%) = [(water pressure resistance around sealing tape part after 20 washes and heat treatment) / water pressure resistance around sealing tape part before washing)] x 100 ( 1) The term "washing" as used herein means a method according to JIS L-2017 103 method, and the term "heat treatment after washing" means drying with an industrial tumble dryer at 80 ° C for 30 minutes.

[0015]

EXAMPLES The present invention will be described in more detail with reference to the following examples. The performance measurements and evaluations of the waterproof clothing in the examples were carried out by the following methods. (1) Water vapor transmission rate JIS L-1099 Calcium chloride method A-1 method (2) Water repellency JIS L-1092 Spray method (3) Water pressure resistant non-coated high density woven fabric of 4 parts of sealing tape is cross shaped A sewn piece, a measurement sample in which a sealing tape was adhered to the sewn portion so as to cross in a cross shape, unwashed and
After 20 times of washing according to JIS L-0217 (103 method), the product dried with an industrial tumble type dryer at 80 ° C. for 30 minutes was exposed to water on the non-adhesive surface of the sealing tape, and the sealing tape crossing portion was It was attached to the device so as to be in the center of the measurement part, and measured according to JIS L-1092 (high water pressure method). (4) Adhesion of sealing tape The degree of peeling of the sealing tape was visually evaluated in four steps for the same sample after 20 times of washing as used for measuring the water pressure resistance. ◯: The seam tape adhesive part is not peeled at all. Δ: The seam tape adhesion part was partially peeled off. X: The seam tape adhesion part was peeled off entirely. (5) The softening point was measured with a differential thermal analyzer at a heating rate of 20 ° C./min.

Example 1 A plain woven fabric having 121 decitex / 348 filament (single yarn fineness: 0.348 decitex) polyester fiber as a warp yarn and having a warp density of 140 / 2.54 cm and a weft density of 90 / 2.54 cm. Is woven with a water jet loom and scoured and dyed by a usual method (Dianix Bl manufactured by Dyster Japan Co., Ltd.).
ue UN-SE 1% omf), and then padded with Asahi Guard AG925 (Asahi Glass Co., Ltd., emulsion type fluorine-based water repellent) 6% aqueous dispersion (squeezing rate 40%), and dried at 160 ° C. Heat treatment for 1 minute at, then using a calendering machine with a mirror surface roll,
By performing calendering under conditions of a temperature of 170 ° C., a pressure of 3000 kPa, and a speed of 20 m / min, the warp density 14
A non-coated high-density woven fabric having a weft density of 8 yarns / 2.54 cm, a weft density of 94 yarns / 2.54 cm, and a cover factor of 2538 was used. Next, in order to obtain a sealing tape used for the waterproof garment of the present invention, a resin solution having a solid content of 20% of the following formulation 1 was coated on a release paper with a knife over roll coater at a coating amount of 160 g / m ² , 100
It was dried at 0 ° C. for 2 minutes to form a heat-resistant polyurethane resin layer.

<Formulation 1> 100 parts by mass of Crisbon 8566 (one-component polyurethane resin manufactured by Dainippon Ink and Chemicals, Inc., softening point 230 ° C.) 30 parts by mass of methyl ethyl ketone 10 parts by mass of dimethylformamide

Next, a resin liquid having a solid content of 25% of the following formulation 2 was applied onto the above heat-resistant polyurethane resin layer with a knife over roll coater at a coating amount of 320 g / m ² , and 1
It dried at 00 degreeC for 2 minutes, and formed the hot-melt-type adhesive agent layer. <Formulation 2> 100 parts by mass of U-HM-S (polyurethane hot melt adhesive manufactured by Seiko Kasei Co., softening point 105 ° C.) 30 parts by mass of methyl ethyl ketone 10 parts by mass of dimethylformamide

Subsequently, the laminated product was peeled off from the release paper,
After slitting to a width of 20 mm and winding it up on a paper tube, a sealing tape used in the waterproof clothing of the present invention was obtained. Next, a sewn product was prepared using the above-mentioned non-coated high-density fabric, and the above-mentioned sealing tape was adhered to the sewn portion under the following conditions to obtain the waterproof clothing of the present invention. <Sealing tape adhesion conditions> ・ Model: Hot air adhesive machine DSM-3800 (H & H Inte
rnational) ・ Hot air nozzle temperature: 550 ° C ・ Adhesion speed: 3 m / min ・ Pressure pressure: 450 kPa ・ Hot air nozzle pressure: 100 kPa

Comparative Example 1 In Example 1, the warp density during weaving was 156 yarns / 2.
54 cm, weft density was changed to 100 yarns / 2.54 cm, the warp density at finishing was 165 yarns / 2.54 cm, the weft yarn density was 105 yarns / 2.54 cm, and the fabric cover factor was 2830. In the same manner as in Example 1, a waterproof clothing of Comparative Example 1 was obtained.

Comparative Example 2 In Example 1, the concentration of Asahi Guard AG925 was set to 6
A waterproof garment of Comparative Example 2 was obtained in the same manner as in Example 1, except that the content was changed from 0.5% to 0.5%.

Comparative Example 3 Except for using Crisbon 4407 (Dainippon Ink and Chemicals Incorporated, polyurethane hot melt adhesive, softening point 125 ° C.) in place of U-HM-S in Formulation 2 of Example 1. In the same manner as in Example 1, a waterproof clothing of Comparative Example 3 was obtained. The performances of the waterproof clothing of Example 1 and Comparative Examples 1 to 3 were measured, and the results are shown in Table 1.

[0023]

[Table 1]

As is clear from Table 1, the waterproof clothing of the present invention has a moisture permeability of 6500 g / m ² · 24 hrs and a water repellency of 3
In addition to the above performance, the softening point of the sealing tape used for the sewn portion is 120 ° C. or lower, and the water pressure resistance retention rate of 60% or higher is exhibited even after 20 washes. It had waterproofness of the stitched part. On the other hand, Comparative Example 1
Had a large cover factor of the woven fabric, and the woven fabric was too dense and was inferior in moisture permeability. In Comparative Example 2, since sufficient water repellency was not obtained, the water pressure resistance of the woven fabric was low. In Comparative Example 3 in which a resin having a high softening point was used as the resin used for the hot-melt layer of the sealing tape, the end portion of the adhesive portion was entirely peeled off from the sealing tape after 20 times of washing. It was inferior in terms of water pressure resistance around the tape portion and washing durability.

[0025]

Industrial Applicability The waterproof garment of the present invention is made of a non-coated high density woven fabric, and when the sealing tape of the present invention is used in the sutured portion, the waterproof garment is excellent in waterproofness and has washing durability.
Rainwear, ski wear with excellent breathability and waterproofness,
It is possible to provide clothing such as mountain wear.

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) A41D 31/00 503 A41D 31/00 503F 503G 3/04 3/04 Q 27/06 27/06 F 27 / 24 27/24 D C09J 7/00 C09J 7/00 175/04 175/04 D03D 15/00 D03D 15/00 F F term (reference) 3B031 AA09 AA10 AA14 AB04 AB06 AE01 3B035 AA24 AB16 AC11 AD08 4J004 AA14 AB03 BA03 FA08 4J040 EF111 EF131 EF291 EF301 JA09 JB01 LA02 LA07 MA09 MA10 MB02 NA10 PA23 4L048 AA21 AA24 AA35 AB11 CA08 CA11 CA15 DA03 EA01

Claims (4)

[Claims] 1. A waterproof garment made of a non-coated high-density fabric having a water vapor permeability of 6500 g / m ² · 24 hrs or more and a water repellency of 3 or more, wherein a polyurethane resin is mainly used in a seam portion of the waterproof garment. A waterproof garment characterized in that the sealing tape is adhered, and the water pressure resistance retention rate M around the sealing tape part represented by the following formula is 60% or more. Water pressure resistance retention rate around sealing tape M (%) = [(Water pressure resistance around sealing tape after washing 20 times and heat treatment) ÷
(Water pressure resistance around the sealing tape before washing)] x 100 2. The waterproof garment according to claim 1, wherein the sealing tape comprises a heat resistant layer mainly composed of a polyurethane resin and a hot melt layer. 3. The waterproof garment according to claim 1, wherein the hot-melt layer of the sealing tape has a softening point of 120 ° C. or lower. 4. A laminate comprising a heat-resistant layer mainly composed of polyurethane resin and having a softening point of 180 ° C. or higher and a hot-melt layer mainly composed of polyurethane resin and having a softening point of 120 ° C. or lower. A featured sealing tape for waterproof clothing.