JP2006274452A - Cloth, and bullet-proof/blade-proof clothing and tire for vehicle equipped with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cloth even having flexibility and air-ventilating property like a fabric, capable of preventing the penetration of a sharp material, a bullet-proof/blade-proof clothing by using the cloth as a sharp material penetration-preventing material and a tire for a vehicle by using the cloth as a tire cord. <P>SOLUTION: This cloth equipped with a high density nonwoven fabric using very fine fibers as raw materials and capable of preventing the penetration of the sharp material by the nonwoven fabric is provided. The fiber diameters of the very fine fibers are from 0.05 to 10 μm. The very fine fibers have a high strength, and are joined to each other by a synthetic resin adhesive. The bullet-proof/blade-proof clothing by using the cloth as the sharp material penetration-preventing material and the tire for the vehicle equipped with the cloth as the tire cord are also provided. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention relates to a fabric that can prevent intrusion of sharp objects. More specifically, bullet-proof / blade-proof clothing to protect yourself from sharp weapons (sharp objects) such as bullets, blades, cutter knives, ice picks, nails falling on the road surface, etc. The present invention relates to a tire cord for preventing puncture of a vehicle tire from a road surface abandonment (sharp object) having such a sharp tip.

As a garment for bulletproof / bladeproof clothing, a fabric in which a plurality of high-strength fibers having a fiber diameter of several tens of microns are woven with a bundle of multiple yarns stacked in the thickness direction (hereinafter referred to as “fabric laminate”) (See FIG. 4). Many high strength fibers such as aramid fibers and high strength polyethylene fibers have been proposed. In addition, as a method of preventing puncture of a vehicle tire, a method of preventing puncture by forming a rubber layer with strong viscoelasticity inside the tire cord and automatically closing a hole when the pierced nail falls off. Are known.
Japanese Patent Laid-Open No. 10-281697

The woven laminate 11 has a property that when a sharp object such as an ice pick 12 is pierced from a direction perpendicular to the plane, the yarn forming the woven structure opens in the direction of the woven fiber. It was weak and had the disadvantage of being able to pierce easily. In general, the tip of the ice pick 12 or the like is formed with a radius r = about 100 microns to ensure rigidity when piercing. On the other hand, if six filaments having a fiber diameter of 20 microns are twisted to form a yarn, the yarn has a diameter of about 50 to 60 microns. When this yarn is used to form a plain weave fabric, there will be a spacing of about 50 to 60 microns between warps and wefts. This gap exhibits air permeability and flexibility as clothes, but on the other hand it causes misalignment of the weave and prevents the entry of sharp objects such as ice picks.

The present invention provides a fabric that is flexible and breathable like a woven fabric, can be sewn, has a dyeability, has functions necessary for clothing, and can prevent entry of sharp objects. The purpose is that. Another object of the present invention is to provide a bulletproof / bladeproof garment using the fabric as a sharp object intrusion prevention material and a vehicle tire using the fabric as a tire cord.

The present invention has been made to achieve the above object,
The invention according to claim 1 is a fabric comprising a high-density nonwoven fabric made of ultrafine fibers as a raw material, and prevents the entry of sharp objects by the nonwoven fabric. The ultrafine fiber means a fiber having a fiber diameter of 0.01 to 10 micrometer. As a non-woven fabric using ultrafine fibers as a raw material, for example, a non-woven fabric made of nylon or the like using a sea-island type composite spinning technology (trademark “EXSEINE”) is known. Conventionally, this type of nonwoven fabric has only been recognized as a fabric for sewing coats and blazers, and has the density, thickness and texture required for such applications. The present inventor has discovered that the entry of sharp objects can be prevented by entanglement and bonding of ultrafine fibers at high density. Such non-woven fabrics have the necessary performance for bulletproof / bladeproof performance and tire cord by selecting the type of fibers that organize them, the adhesive that connects the fibers (threads), density, thickness and texture. It was found that it can be set at various levels and can meet the needs of various markets.

Nonwoven fabric manufacturing methods can be broadly classified into wet methods using water and dry methods not using water. Specific manufacturing methods include “chemical bonds” that bond ultrafine fibers with adhesives, “thermal bonds” that bond with self-adhesive or adhesive fibers, “spunlaces” that are entangled with high-pressure water flow, and webs that use special needles. There is a “needle punch” that needs to be entangled and a “stitch bond” that is knitted with yarn so that the web does not become loose. Among these, spunlace is suitable as a method for producing a high-density nonwoven fabric using ultrafine fibers as raw materials.

Synthetic resin adhesives include epoxy resins, acrylic resins, linear saturated polyester resins, etc. Among these, linear saturated polyester resins have excellent adhesiveness to various fiber materials such as polyester resins. It also has excellent heat resistance, flexibility and weather resistance, has no change over time, and maintains stable quality.

Furthermore, high density means that a continuous air passage with an opening diameter of several hundreds of nanometers to several tens of micrometers or more is secured, and air permeability is secured so that moisture does not remain inside when used as clothes. It is the density that can be done. For example, it has only to have air permeability equivalent to the entrant of Toray Industries, Inc. (hole diameter: 0.5 to 3 μm) or Gore-Tex of DuPont.

The invention according to claim 2 is the cloth according to claim 1, which is made of a nonwoven fabric in which the fiber diameter of the ultrafine fibers is from 0.01 to 10 microns. In general, the diameter of sharp objects such as ice spicks, awls, and cones is approximately 200 to 400 microns. Sharp objects such as nails are larger than this, and sharp objects such as bullets are even larger. Therefore, if ultrafine fibers with a fiber diameter of 0.01 to 10 microns are used as raw materials and a high-density nonwoven fabric is used, a sharp object with a diameter of 200 microns can be obtained with about 20 ultrafine fibers with a diameter of 10 microns. I can take it. Since the relative position of the ultrafine fiber is regulated by an adhesive, entanglement, or the like, misalignment or the like does not occur. In addition, if medium strength ultrafine fibers such as nylon are used, the penetration of sharp objects can be prevented by increasing the thickness of the nonwoven fabric. Nylon can be dyed and is suitable for clothing.

The invention according to claim 3 is the cloth according to claim 1 or 2, wherein the ultrafine fibers are high-strength ultrafine fibers, and the ultrafine fibers are connected with a synthetic resin adhesive. . As this high-strength ultrafine fiber, para-type aramid fiber, meta-type aramid fiber, polyacrylonitrile-based carbon fiber, pitch-based carbon fiber, ultra-high-strength polyethylene fiber, polyarylate fiber, ultra-high-strength polyvinyl alcohol fiber, etc. should be used Can do. Many high-strength ultrafine fibers have been proposed, such as those using aramid fibers as the fiber material (trademark “Kepler”) and those using high-strength polyethylene fibers (trademark “Dyneema”). When a sharp object such as a bullet is pierced into a high-density nonwoven fabric made from these high-strength ultrafine fibers, the sharp object moves forward while twisting a number of high-strength ultrafine fibers constituting the nonwoven fabric. However, the ultrafine fibers are connected (bonded / entangled) to each other in all directions in all directions, that is, fixed in the three-dimensional direction, and even if the first ultrafine fiber is torn by the sharp object, the next ultrafine fiber The forward movement can be stopped and a large number of high-strength ultrafine fibers can brake and stop the piercing operation of the sharp object to prevent penetration.

According to a fourth aspect of the present invention, there is provided a bulletproof / bladeproof garment comprising the cloth according to any one of the first to third aspects as a sharp object intrusion preventing material. A high-density nonwoven fabric made from ultrafine fibers can prevent the intrusion of sharp objects, has flexibility and breathability, and can be used for clothes. If nylon or the like is used, dyeing becomes possible.

According to a fifth aspect of the present invention, there is provided a vehicle tire comprising the fabric according to any one of the first to third aspects as a tire cord. A high-density nonwoven fabric made from ultrafine fibers can prevent the intrusion of sharp objects such as nails that have fallen on the road surface, and has excellent mechanical strength, meeting the quality requirements required for tire cords. it can.

As described above, according to the present invention, the high-density nonwoven fabric made from a large number of ultrafine fibers can increase the adhesive force and completely prevent the penetration of sharp objects. If you do, from bullet-proof / blade-proof clothing that can protect yourself from weapons with sharp objects such as bullets, blades, cutter knives, ice picks, and sharp parts such as nails falling on the road surface A tire that can prevent puncture of a vehicle tire can be provided. By using high-strength ultrafine fibers, the bulletproof performance of clothing and the mechanical performance of tire cords can be dramatically improved.

In addition, since it is a non-woven fabric that is integrated by impregnating a large number of high-strength ultrafine fibers with a synthetic resin adhesive, it does not tear in the direction of the woven fibers and completely protects against piercing and striking with an ice pick or a knife. It is possible. Further, if a linear saturated polyester resin is used as the synthetic resin adhesive, it is excellent in heat resistance and weather resistance, does not change with time, and can greatly improve durability.

Embodiments of the bulletproof / bladeproof vest according to the present invention will be described below based on the drawings. 1 is a front view showing an example of a bulletproof / bladeproof vest, FIG. 2 is a partial cross-sectional view of the bulletproof / bladeproof vest, and FIG. 3 is a schematic diagram showing the relationship between a nonwoven fabric and the tip of an ice pick. As shown in FIGS. 1 and 2, the bulletproof / bladeproof vest 1 has a front member 3 and a back member 4 connected by two shoulder cloths 2. The front member 3 and the back member 4 are formed from a nonwoven fabric 6 in which high-strength ultrafine fibers 8, 8,... Are integrated by increasing the synthetic resin adhesive 9 or entanglement, and a surface fabric 7 covering the nonwoven fabric 6. ing. The tip of a sharp object such as an ice pick has a diameter of about 200 μm, and the fiber diameter of the ultrafine fiber is 5 to 10 μm. Therefore, the tip of the sharp object is blocked by about 20 high-strength ultrafine fibers. become. Aramid fiber has excellent tensile strength and heat resistance. Furthermore, since the ultrafine fibers made of aramid fibers are firmly connected by a synthetic resin adhesive made of linear saturated polyester resin, the relative positions of the high-strength ultrafine fibers are regulated, which may cause misalignment. Absent. Therefore, the nonwoven fabric exhibits sufficient bulletproof / bladeproof performance, the thickness of the fabric can be made much thinner than the conventional one, and it has breathability and is comfortable to wear.

Since the bulletproof vest according to the present embodiment has the above-described configuration, the bullets fired from the firearms pass through the top cloth 7 and collide with the non-woven fabric 6 to form a large number of high-strength ultrafine fibers constituting the non-woven fabric. When the robot 8 moves forward while twisting it, the rotation of the bullet is braked by a large number of high-strength ultrafine fibers 8, and penetrating energy and impact energy are absorbed. The rotation of the bullet is braked, penetrating energy and collision energy are absorbed, the bullet can be stopped, and it is possible to reliably prevent the bullet from penetrating.

At this time, the high-strength ultrafine fibers 8 and the synthetic resin adhesive 9 are heated due to heat generated when the bullet collides, but the aramid fibers that are ultrafine fibers and the linear saturated polyester resin that is the synthetic resin adhesive are excellent. Since it has heat resistance, it is not melted by heat, and the bullet can be strongly adhered. In particular, since a large number of high-strength ultrafine fibers are each impregnated with a synthetic resin adhesive and integrated, the force to stop and repel the bullets is dramatically increased.

Therefore, by integrating a large number of high-strength ultrafine fibers 8, 8,... With the synthetic resin adhesive 9, the adhesive force is increased, and the strength and the bulletproof performance are dramatically improved, such as Tokarev, Magnum, etc. Even bullets fired from powerful firearms can be reliably prevented from penetrating. Further, since the strength and the bulletproof performance are dramatically improved, the thickness of the nonwoven fabric can be reduced, and the weight can be reduced and the cost can be reduced accordingly. In addition, since many high-strength ultrafine fibers were impregnated with a synthetic resin adhesive and integrated, they do not tear in the direction of the weaving fibers as in woven fabrics. Can be fully protected. Furthermore, since a material resistant to weather resistance and changes with time is used, durability can be greatly improved.

In the above-described embodiment, an aramid fiber is used as a specific example of a high-strength ultrafine fiber. Of course. If medium-strength ultrafine fibers such as nylon are used, dyeability becomes possible and it becomes suitable for clothes. In the above-described embodiment, the linear saturated polyester resin is used as the synthetic resin adhesive. However, the present invention is not limited to this, and other synthetic resin adhesives may be used.

The present invention relates to a high-density nonwoven fabric made of ultrafine fibers, and is used for bulletproof / bladeproof clothing for protecting yourself from weapons such as bullets, blades, cutter knives, ice picks, etc. The present invention can be applied to a tire cord for preventing puncture of a vehicle tire from a nail or the like.

It is a front view of a bulletproof / bladeproof vest. It is a fragmentary sectional view of a front member and a rear member. It is a perspective view which shows the relationship between a nonwoven fabric and an ice pick (pointed object). It is a perspective view which shows the relationship between the conventional textiles laminated body and ice picks (pointed object).

Explanation of symbols

1 Bulletproof / bladeproof vest 6 Nonwoven fabric 8 Extra fine fiber 9 Synthetic resin adhesive
12 Ice pick

Claims (5)

  A fabric characterized by comprising a high-density nonwoven fabric made of ultrafine fibers as a raw material, and preventing the entry of sharp objects by the nonwoven fabric.    2. The fabric according to claim 1, wherein the ultrafine fiber has a fiber diameter of 0.05 to 10 micrometer.     The fabric according to claim 1 or 2, wherein the ultrafine fibers are high-strength ultrafine fibers, and the ultrafine fibers are connected to each other with a synthetic resin adhesive.   4. A bulletproof / bladeproof garment comprising the cloth according to any one of claims 1 to 3 as a sharp object intrusion preventing material.   A vehicle tire comprising the fabric according to any one of claims 1 to 3 as a tire cord.

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