JP2686868B2 - Waterproof protective cloth and work clothes and rider suit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof protective cloth having waterproof and protective properties and excellent performance, a work clothes and a rider suit made of the cloth.

[0002]

2. Description of the Related Art Conventionally, as a waterproof cloth, a plain knitted fabric or a plain woven fabric has been impregnated with or laminated with an elastic resin, and has been used for rain gear and the like. Furthermore, in recent years, for example, JP-A-63-31567
No. 3 and others have proposed a wear-resistant fabric in which a flat knitted fabric using high-strength yarn is impregnated with an elastic resin.

[0003]

However, such a technique is also suitable as a protective garment because it is a flat knitted fabric and the fabric is thin, so that the sharp protrusions have low cuttability and abrasion resistance. I couldn't say. In order to improve such drawbacks, for example, when a thick woven or knitted fabric is used, impregnation of a resin for imparting waterproofness becomes extremely difficult, and the impregnation is apt to become uneven, resulting in waterproofness and protection. There is a drawback that you cannot get what you want at the same time.

The present invention is intended to provide a waterproof protective cloth which is easy to contain an elastomer even in a thick woven or knitted fabric, and which is further excellent as a protective garment having improved cut resistance and abrasion resistance. Further, the present invention can be suitably used as a rider suit such as various work clothes from marine work clothes to land work clothes using such waterproof protective cloth and clothes for auto sports and cycling clothes. The purpose is to provide traditional clothing.

[0005]

In order to achieve the above-mentioned object, the present invention adopts the following constitution, that is, the waterproof protective cloth of the present invention has different front and back surfaces.
A woven or knitted fabric composed of two layers having a yarn density, the surface of which is higher in density than the back face , wherein the yarns constituting the surface are mixed with at least 50% of a para-aromatic polyamide fiber, and An elastomer is provided on at least the back surface of the woven or knitted fabric.
It is characterized by being impregnated .

Further, the waterproof protective cloth of the present invention has a surface
A woven or knitted fabric having a back surface composed of two layers having different thread densities and a front surface having a higher density than the back surface, and at least 50% of a para-aromatic polyamide fiber is mixed in a yarn constituting the front surface. And at least the woven or knitted fabric
A cloth whose back surface is impregnated with an elastomer, which conforms to JIS
The tensile strength measured by K-6552 is 10 kg or more, the tear strength is 5 kg or more, and JIS L-109
The flat wear strength measured in 6 is 500 times or more. Furthermore, the working garment and rider suit of the present invention are characterized by being formed by sewing such a waterproof protective cloth.

[0007]

The present invention employs a fabric composed of a specific fiber material having a specific woven / knitted structure in order to simultaneously achieve both the waterproof property and the protective property with one cloth. . That is, as the yarns constituting the front surface, those in which at least 50% of the para-aromatic polyamide fiber is mixed are used, and further, the woven or knitted fabric in which the front surface is denser than the back surface is used. With this structure, it is possible to provide a fabric having a high resistance to external stress, and by containing an elastomer in the fabric, the resistance can be increased to an extremely high level, and the resistance is uniform and uniform. It was able to be given to. Further, in the present invention, since the elastomer can be uniformly permeated into the woven or knitted fabric, the outermost woven or knitted fabric may have a high density and smooth surface, but it is particularly preferable that the woven and knitted fabric has no elastomer. By doing so, the elastomer film adhered to the surface via the adhesive can be adhered under a strong adhesive force, and thus the excellent waterproof property can be imparted.

That is, according to the present invention, when the elastomer is applied from the back surface, for example, unlike ordinary cloth, the resin solution made of the elastomer permeates while greatly diffusing corresponding to the fiber density ratio. Therefore, by adjusting the viscosity and amount of the resin solution in accordance with the fiber density ratio and the thickness of the front and back surfaces of the woven or knitted material, it is possible to diffuse and permeate appropriately and fairly accurately. For example, leaving the outermost surface of the woven or knitted fabric, the other part may be uniformly impregnated and contained with the elastomer.

Further, for example, the woven or knitted material can be dipped in an elastomer resin solution, and in this case, the elastomer diffuses and penetrates from the back side of the fabric toward the front side as in the above case. However, in this case, the effect of the present invention cannot be achieved unless the surplus elastomer on the surface side of the woven or knitted material, that is, the high density side, is removed by a knife bar after the immersion. This surplus elastomer may remain to some extent as long as it does not impair the object of the present invention.

By completing the method of impregnating and containing the elastomer, the elastomer film by the dry method, which is adhered to the outermost surface through the adhesive, is bonded to the surface of the woven or knitted fabric with extremely high adhesive force. be able to. The elastomer to be impregnated forms a resin layer by a wet film-forming method, but such a resin coating has low mechanical properties, and if such a resin coating is present on the surface of the woven or knitted material, even if a strong elastomer coating is applied onto it. Eventually, the mechanical strength of the impregnated resin layer limits the rate of peeling and the peeling easily occurs. On the other hand,
In the present invention, the resin layer formed by such a wet film-forming method does not exist on the surface of the woven or knitted fabric, whereby the plane abrasion strength of the fabric of the present invention can be maintained at a remarkably high level.

The woven or knitted fabric as referred to in the present invention includes a woven fabric, a knitted fabric, a laminate of the woven fabric and the knitted fabric, and the like. For example, a knitted fabric will be described in detail. In order to have a high-density knitting structure on the front surface and a low-density knitting structure on the back surface, and to have a structure with holes, the dial needle and the cylinder needle are in rib contact with each other, for example, as shown in FIGS. It is preferable to make one complete tissue with eight feeders composed of the tissue as in the tissue example. Dials have 4 courses (Figs. 1, 2, 5, 6), cylinders have 2 courses (Figs. 3, 7), double-sided tack has 2 courses (Figs. 4, 8), and knitting order is dial 2 courses. (1 stitch skip) (Figs. 1 and 2), cylinder (total needle) 1 course (Fig. 3), double-sided tack 1 course (Fig. 4),
Dial 2 courses (1 stitch skip) (Figs. 5 and 6), cylinder (total needle) 1 course (Fig. 7), double-sided tack 1 course (Fig. 8).

With such a design, the ratio of the yarn lengths constituting the high-density surface and the low-density surface can be set to, for example, 1.25: 1. Can be expanded. If the thread thickness is the same, the high-density side has a 25% increase on the low-density side, but if the difference in thread thickness is doubled, the high-density side will increase by 250% and the density can be easily changed. Further, the above-mentioned knitting structure has a structure in which holes are formed in the low density surface, and it is possible to select an arbitrary density difference together with the thickness of the yarn. For example the area of one of the holes in the case of the above structure, a high density surface and a low-density plane at the same yarn thickness is former 0.64 mm ^2, the latter is 6.50 mm ^2, and the area ratio of the holes as about 10-fold Become.

The organization described above is a typical one, and various modified organizations can be organized. For example, 4 feeders may form one complete organization. Next, the fabric will be briefly described. In the case of a woven fabric, a multi-woven fabric may be used, and as the basic design, one side may be a flat design, and the other side may be any design as long as it is a multi-layered design such as a bead weave or a sponge weave that can structurally provide a density difference.

The laminate of the knitted fabric and the woven fabric may use a knitted fabric on the low density side and a woven fabric on the high density side, which are adhered to each other or sewn. . As the yarn material to be used, it is particularly necessary that at least 50% of the yarn constituting the high-density surface is mixed with the para-aromatic polyamide fiber. Normal,
Since a high density surface is used on the outside of the garment, it is necessary to achieve excellent durability against external stress, abrasion, etc. The yarn may be spun yarn or filament yarn. The mixing ratio must be at least 50% of the entire base fabric. Such a mixing ratio is indispensable for achieving the protection property, and the larger the amount of the para-aromatic polyamide fiber mixed, the higher the protection property.

As other thread materials, natural fibers such as cotton and wool and synthetic fibers may be used in combination depending on the application. For example, various yarns can be used, such as a para-aromatic polyamide fiber on the high-density front side and a mixed yarn of cotton and synthetic fiber on the low-density back side. Next, as the rubber material for the impregnated elastomer material, for example, natural rubber, styrene-butadiene rubber, nitrile rubber, isoprene rubber, hydrin rubber, chloroprene rubber, silicone rubber or the like can be used.

As the organic elastomer, for example,
Polyurethane type, polyvinyl chloride type, polyamide type, polyethylene type, polystyrene type, ethylene vinyl acetate copolymer type, ethylene ethyl acrylate type, ethylene vinyl alcohol type, phenol type, polyurea type, polyolefin type (chlorinated olefin, chlorosulfonated) Resins such as olefins), polyester resins and epoxy resins can be used.

As the inorganic elastomer, for example, rubbery sulfur, silicon fluoride polymer, phosphorus type, fluorine type,
Silicon-based (cyclohexane-based polymer), phosphazene-based elastomer (phosphorus, nitrogen skeleton) and the like can be used. As the polymer gel elastomer, for example, one selected from polyvinyl alcohol hydrogel, sodium acrylate / acrylamide copolymer gel and the like can be used.

Among these elastomers, an elastomer which is flexible and has a large elastic modulus and whose properties are not significantly changed by cold weather is preferably used. For example, polyurethane elastomers are preferable, and those having 100% modulus of 10 to 50 kg / cm ² are particularly preferable. In the present invention, such an elastomer is
The high density woven / knitted layer on the front surface side is contained in a larger amount than the low density woven / knitted layer on the back surface side. The fabric as a whole preferably contains (impregnates) 10 to 100% by weight, preferably 50 to 100% by weight, based on the weight of the fiber. If the content is 10% by weight or less, it is not preferable because performance such as waterproofness or abrasion resistance and a transmission line due to scratches on the hook may occur. Even if it is contained in an amount of 100% by weight or more, it is heavy and hard, and is not suitable for clothing.

As a method of applying such an elastomer, a dipping method, a coating method and a combination thereof can be used. In either method, the elastomer solution can be easily diffused and uniformly applied. Also,
In the present invention, it is preferable that an elastomer coating is adhered to the surface of the cloth on the high density side via an adhesive. A dry elastomer coating is preferably used as the elastomer coating. As such an elastomer coating material, one selected from the above elastomers can be used. For example, a dry-formed polyurethane elastomer coating is preferably used, and 100% modulus is 40 to 110 kg /
Those of cm ² are particularly preferably used. By such a coating, more complete waterproofness can be achieved, and by imparting coloring or surface pattern, it is possible to provide a fashionable product and a product with high commercial value. The material and thickness of the elastomer coating can be selected according to the purpose of use such as heat resistance, flexibility, and weight reduction. By bonding such an elastomer coating,
It is possible to significantly improve the abrasion strength and the oyster strength of the waterproof protective cloth of the present invention.

The waterproof protective cloth of the present invention thus obtained is also characterized in that it has a tensile strength of 10 kg or more, a tear strength of 5 kg or more, and a flat abrasion strength of 500 times or more. JI is the method of measuring tensile strength and tear strength.
S K-6552 (Leather test method for clothing), and the method for measuring plane abrasion strength are JIS L-1096 (General textile test method) A-
Method 1 was performed under the conditions of abrasive cloth AA50 and load of 3.5 pounds.

The present invention can provide an excellent protective garment which satisfies all of the above-mentioned performances and shows a strong resistance to a severe motion or impact for the first time. next,
Since the work clothes and rider suit of the present invention are formed by sewing the above-mentioned waterproof protective cloth, the elbow,
It has excellent durability especially in parts that are easily worn such as the knees, and in a rider suit it has enough resistance to withstand severe friction and great stress when falling. Yes, it is extremely effective for these applications.

[0022]

【Example】

Example 1 A 20-yarn spun yarn composed of a para-aromatic polyamide fiber having a single yarn fineness of 1.5 d and a length of 51 mm was used and knitted in order with a structure as shown in FIGS. A double-sided knitted fabric was manufactured. The yarn weight ratio of D and C was 1: 1.25, the thickness of the knitted fabric was 1.6 mm, and the basis weight was 430 g / m ² , which was a bulky base fabric.

Next, as the polyurethane, a one-component polyurethane elastomer for wet urethane leather Sanprene LQ-377 manufactured by Sanyo Kasei Co., Ltd. was used, and 150 parts of dimethylformamide (DMF), 10 parts of a white pigment, an auxiliary agent,
The viscosity was adjusted to 1500 CPS by mixing 2 parts of each surfactant. The resin solution was applied to the back surface of the knitted fabric to contain the resin solution, wet-coagulated in water for 10 minutes, washed with hot water at 40 ° C. for 5 minutes, and dried in a 120 ° C. circulating air dryer. The fabric manufactured in this manner is flexible, and when a cross-section photograph is observed,
Although not present on the surface of the base fabric, the back surface of low density was heavily impregnated with the elastomer, and a layer having small pores (microporous) was formed. This fabric had a thickness of 1.5 mm and a basis weight of 650 g / m ² . The fabric has a water resistance (JIS L-1092A method) of 860 mm and a water vapor transmission rate (JIS Z-0208) of 2550 g.
/ M ² · 24Hr.

The tensile strength and elongation of this cloth (JIS K-655
2) was 21% vertical and 41%, and horizontal 18 kg was 106%. The tear strength (JIS K-6552) showed a performance of 12 kg in the vertical direction and 8 kg in the horizontal direction. Further, the plane wear (JIS L-1096, abrasive cloth AA50, load 3.5 pounds) was 610 times, which was useful as a protective cloth. Example 2 A polyurethane adhesive (Seika Bond C-manufactured by Dainichiseika Co., Ltd.) was applied to the surface of the waterproof protective cloth of Example 1 having a high fiber density.
75N-3) is applied to a thickness of 40μ, and a 60μ dry-formed surface film made of the polyurethane elastomer sampler LQ-195 manufactured by Sanyo Kasei Co. A fabric having a weight of 1.35 mm and a fabric weight of 690 g / m ² was produced.

The water resistance of the cloth (JIS L-1092B method) is 2 kg.
That was all. The tensile strength and elongation (JIS K-6552) is 21.2
Tear strength (JIS K-65 kg, 42%, horizontal 18.1 kg, 108%)
52) was 11.7 kg in the vertical direction and 9 kg in the horizontal direction. The flat surface wear (JIS L-1096, abrasive cloth AA50, load 3.5 pounds) was 655 times, which was extremely excellent as a waterproof protective cloth. Example 3 A denier of 200 filaments made of polytetrafluoroethylene and a yarn of 30 count made of para-aromatic polyamide fiber of 1.5 mm denier and 51 mm of monofilament were aligned, and the same as in Example 1 ( (Figs. 1, 2, 5, and 6) are supplied to the dial side with a double-sided tack yarn (Figs. 4 and 8) using a 20 count yarn made of para-aromatic polyamide fiber to achieve low density. One 20th cotton thread on the cylinder side
The same feeder as the tuck yarn was supplied to the feeder (Fig. 3) and the other one feeder (Fig. 7) to produce a thick double-sided knit fabric having a thickness of 1.65 mm and a basis weight of 450 g / m ² .

Next, the same wet urethane elastomer as used in Example 1 was impregnated by the same method and dried, and then the Toray Dow Corning Silicone silicone elastomer was adjusted to a viscosity of 20,000 CPS with toluene. After that, the surface having high density was coated with a comma coater to a thickness of 100 μm, dried at 100 ° C. for 5 minutes, and then vulcanized at 180 ° C. for 5 minutes to produce a waterproof protective cloth.

The water resistance of the cloth (JIS L-1092B method) is 3 kg.
In addition, the heat resistance was excellent without any change in the melt resistance test in which the iron rod having a diameter of 6 mm and having a temperature of 300 ° C. was brought into contact with the surface of the cloth for 5 seconds. Tensile strength (JIS K-6552) is vertical 19.5kg, horizontal 17.8kg, tear strength (JIS K-6552) is vertical 11.5kg, horizontal 7.5kg.
Met. Surface abrasion resistance (JIS L-1096), polishing cloth AA5
0, load 3.5 pounds) was 685 times, which was excellent. Comparative Example 1 A 24-gauge flat knitted fabric (tenjiku) was manufactured using a 20-count spun yarn made of para-aromatic polyamide fiber having a single yarn fineness of 1.5 d and a length of 51 mm.

Next, the same elastomer as used in Example 1 was applied to the above-mentioned plain knitted fabric by the same method. This fabric had a thickness of 0.6 mm and a basis weight of 355 g / m ² . However, this fabric was non-uniformly impregnated with the elastomer, and the water resistance (JIS L-1092A method) was 73 mm, which was extremely low. Tensile strength and tear strength (both JIS K-6552)
The yarn fell out from the edge of the cloth and weighed 1 kg or less, which was not a practical cloth. Comparative Example 2 The same elastomer was added to the cloth produced in Comparative Example 1 in an amount of about 0.
Coated to a thickness of 7 mm, coagulated and dried, and then laminated with the same elastomer as used in Example 2 by the same method,
A fabric having a thickness of 1.35 mm and a basis weight of 613 g / m ² was produced. Although the water resistance of the cloth has improved to about 2 kg, it has abrasion resistance (JIS L-1096,
The abrasive cloth AA50, load 3.5 lbs) was as low as 244 times. Further, it was easily cut even with a sharp cutter blade, and was unsuitable as a protective cloth. Comparative Example 3 An 18-gauge double-sided knitted fabric (double-sided smooth) was manufactured using 20-count spun yarn composed of para-aromatic polyamide fiber having a single yarn fineness of 1.5 d and a length of 51 mm. The thickness of the knitted fabric is 1.
At 2 mm, the basis weight was 380 g / m ² . Next, the same elastomer as that used in Example 1 was added and contained by the same method.
According to the cross-sectional photograph and surface observation of the cloth, the elastomer was non-uniformly contained. Therefore, at the time of tearing, the yarn in the portion with a small amount of the elastomer came off and did not contribute strongly. Also, when cutting and sewing, the cutting edge may be frayed or punched.
(Drilling) After processing, the inside of the holes became yellow due to the fibers and the holes gradually became clogged. The hardness also varies, and the performance as a waterproof protective cloth is not satisfactory.

[0029]

The waterproof protective cloth of the present invention is characterized in that it is devised so that the elastomer easily permeates / diffuses from the low-density surface of the base cloth. Therefore, the elastomer is uniformly impregnated and contained. It achieves the characteristic effect of being able to. Therefore, it is possible to provide a fabric that simultaneously satisfies unprecedented waterproofness and protection, has the advantages of being light in weight, being flexible and having a great elongation, as well as protective clothing, various work clothes, For example, as work clothes with protective properties related to fisheries, forest work, construction and civil engineering,
Alternatively, it is suitable as a sub-material used for a rider suit such as a motor boat, a bicycle, a motorcycle and an automobile or a part thereof by taking advantage of features such as abrasion resistance, heat resistance and stretchability. The rider suit has holes for improving ventilation, which is called punching, but the fabric of the present invention also has an effect that fibers are not frayed from the holes.

In addition, the fisherman protects against the cold and seawater, and prevents the fish from breaking due to wear with the fishing net.
Also suitable for rider suits that protect the human body even if a motorcycle rider falls down in rainy weather, and as a protective suit for firefighters to protect themselves from water, heat and external injuries at a fire rescue site. It is possible to provide a waterproof protective cloth used for.

[Brief description of the drawings]

FIG. 1 shows a 1-piece 8-sided knitted fabric used in the present invention.
An example of organization is shown.

FIG. 2 is a view of an eight-sided double-sided knitted fabric used in the present invention.
An example of organization is shown.

FIG. 3 is a view of an 8-sided double-sided knitted fabric used in the present invention.
An example of organization is shown.

FIG. 4 is a drawing of 1 for 8-sided double-sided knitted fabric used in the present invention.
An example of organization is shown.

FIG. 5 is a view of an 8-neck double-sided knitted fabric used in the present invention.
An example of organization is shown.

FIG. 6 is a view of a 8-sided double-sided knitted fabric used in the present invention.
An example of organization is shown.

FIG. 7 is a drawing of 1 for 8-sided double-sided knitted fabric used in the present invention.
An example of organization is shown.

FIG. 8 is a drawing of 1 for 8-sided double-sided knitted fabric used in the present invention.
An example of organization is shown.

[Explanation of symbols]

 1-8 Feeder number D Dial side C Cylinder side

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location D04B 1/14 D04B 1/14

Claims (6)

(57) [Claims] 1. A yarn having a yarn density different from each other on the front surface and the back surface.
A woven or knitted fabric composed of layers, the surface of which is higher in density than the back side, wherein the yarns constituting the surface are mixed with at least 50% of para-aromatic polyamide fibers, and At least the back surface is impregnated with an elastomer, which is a waterproof protective cloth. 2. The elastomer has a fiber weight of 10
The waterproof protective cloth according to claim 1, wherein the waterproof protective cloth is contained in an amount of -100%. 3. The waterproof protective cloth according to claim 1, wherein an elastomer coating is adhered to the surface of the cloth via an adhesive. 4. The yarn having different yarn densities on the front surface and the back surface is used.
A woven or knitted fabric composed of layers, the surface of which is higher in density than the back side, wherein the yarns constituting the surface are mixed with at least 50% of para-aromatic polyamide fibers, and at least a back surface elastomer is immersed including the fabric, JIS K-6552 at more than the tensile strength measured 10 kg, and the tear strength is more than 5 kg, and a plane abrasion strength measured by JIS L-1096 is 5
A waterproof protective cloth, which is characterized by being used more than 00 times. 5. workwear, characterized in that it is formed by sewing waterproof anti <br/> protection fabric according to claim 1 or claim 4, wherein. 6. A rider suit, characterized in that it is formed by sewing waterproof anti <br/> protection fabric according to claim 1 or claim 4, wherein.