JPS5928838Y2 - protective cloth - Google Patents

Description

[Detailed description of the invention] This invention relates to a protective cloth made by stacking multiple layers of resin-treated cloth, and its purpose is to be lightweight, have excellent flexibility,
Our goal is to provide a protective cloth that is resistant to punctures from knives and sharp protrusions, as well as bullets, and has excellent wearability.Its uses include protective clothing, protective gloves, protective shields, plates, cases, and sheets in addition to protective vests. etc., over a wide range of areas.

Conventional soft protective clothing is more flexible, relatively lightweight, and comfortable to wear compared to protective clothing made of metal plates, ceramic plates, FRP plates, etc.; It is possible to prevent the bullet from penetrating the protective clothing, but the impact force of the bullet hitting the protective clothing is strong, and the impact energy is directly applied to the protective clothing without being absorbed, causing the hit part to move inwards. The dent and blunt wound effect phenomenon is large, and the external and internal damage inflicted on the body behind the bullet impact point is large and can sometimes be fatal.

It also has the disadvantage that if it gets wet from rain or absorbs water, its bulletproof effect will decrease.

The present invention has been developed in view of this, and will be described below based on embodiments shown in the drawings.

In the figure, 1 is the base fabric, and the base fabric 1 is made of ultra-high strength fibers such as aromatic polyamide fibers, graphite, boron fibers, and non-woven fibers, and is either untwisted or if heating is required for weaving. The fibers are woven at a high density by applying as little heating as possible to minimize the structural elongation of the fibers, resulting in a plain weave or twill weave.

Therefore, since this base fabric 1 is woven from fibers with very low elongation in a manner that suppresses elongation in its structure, its elongation is extremely low.

Next is the number of stitches in the base fabric 1. This is related to the thickness of the fibers used, but the number of stitches in the base fabric 1 is related to the thickness of the fibers used. This will reduce the burden on staff.

A relatively hard thermosetting resin or a thermoplastic resin according to the comparative terms and conditions is welded or impregnated on one or both sides of the base fabric 1 woven with high density in this manner, and a synthetic resin film 2 is integrally formed on the base fabric surface. .

The type of resin for this synthetic resin film 2 is selected depending on the object to be protected and the intended use.

For example, when making a protective vest, use a soft polyurethane resin that has good bulletproof resistance, is lightweight, and is comfortable to wear.

The thickness of this synthetic resin film 2 is several microns or more, and the thickness is determined depending on the application.

Generally, the thicker the synthetic resin film, the better the impact resistance, but the heavier the weight, so the thickness may be changed depending on the application, or the overlapping base fabric may be made of a combination of thick and thin synthetic resin films. shall be used.

By impregnating or welding a synthetic resin to this base fabric 1, the synthetic resin is interposed between the warp and weft of the base fabric, so the impact force is rapidly transmitted to the warp and weft near the impact point through this interposed resin. Since the impact energy can be absorbed by diffusing and dispersing the energy, the blunt wound effect is reduced, and the base fabric becomes completely waterproof, so that the bulletproof effect does not decrease due to water absorption.

The protective base fabric configured as described above is used by stacking two or more layers.

Next, we will discuss the results of a bullet resistance test using the protective fabric of the present invention.

Bullet Resistance Test Example Sample A protective cloth of 300mm x 300mrtt is attached to the front surface of a cube of oil clay measuring 100mm deep x 300mm wide x 300mm wide.

A bullet was hit at the center of the sample with a 450 diameter regular pistol from a distance of 1077Z, and the condition of the depression in the oil clay was measured.

Sample Protective Fabric Base Fabric Type of Fiber Tensile Strength of Base Fabric Breaking Elongation of Base Fabric Heating of Base Fabric Weight of Base Fabric Resin Treatment Composition of Protective Fabric Bullet Penetration Measurement Result Oil Clay Hollow Depth 6wtm Micron Thickness Kevlar/Aramid Fiber 280 kg/mm2 24% Free 300 @/m2 Polyurethane 70 10-ply oil-free clay hollow Outer diameter 55m'IIL No bullet penetration.As a protective cloth, increasing the number of layers of base fabric will improve bullet resistance. However, the impact resistance is also improved, but since the weight is significant, the weight of the entire protective cloth, impact resistance effect, price, etc. should be taken into consideration when deciding.

Next, an example of a protective vest using the protective cloth of the present invention will be described.

1. Using the protective base fabric of the present invention, cut 10 pieces into the same shape and size necessary to cover the chest, and store them in the inner bag 3 sewn with the desired fabric.

Also, eight pieces of the same base fabric are cut to have the shape and size necessary to cover the back, and these pieces are stored in the inner bag 4.

These inner bags 3 and 4 may be of a closed type or may be shaped so that the base fabric can be taken out and put in them.

Next, a hole 5a through which the head is inserted is made in the center of the desired cloth, and the bag is divided into front and back parts to be worn over the shoulder to form an outer bag 5 that covers the chest and back of the human body. A part of the outer bag is punctured with 5b and 5ct, and on this day, from 5b or 5c, inside the outer bag is an inner bag 3 for chest protection, or an inner bag 4 for back protection.
The chest 5d and back 5e of this outer bag are provided with latching pieces 6.6 on both sides so that they can be fastened with eyelets, etc., and a string 7 is sewn to the back hem to allow the waistcoat to be worn. Make sure you can do it properly.

The fabric according to the present invention is flexible, lightweight, completely waterproof, and absorbs impact energy well, so it can be used as a variety of protective fabrics, and fabrics made using this protective fabric. Vests and clothing are light and highly flexible, making them comfortable to wear and causing less fatigue even when worn for long periods of time. It has many advantages, such as the outer bag can be washed, maintenance can be performed accurately, the appearance is sleek, and it is easy and quick to wear.

[Brief explanation of drawings]

Fig. 1 is a sectional view of the protective cloth of the present invention, Fig. 2 is a sectional view of its use, Fig. 3 is a sectional view of an embodiment different from Fig. 1, and Fig. 4 is an embodiment of a protective vest. FIG. 1... Base fabric, 2... Synthetic resin membrane, 3... Inner bag, 4
... Inner bag, 5... Outer bag, 5a... Child L5b, 5c
...mouth, 5d...chest, 5e...back, 6...
Attachment piece, 7... string.

Claims (7)

[Scope of utility model registration request] (1) A high-density woven fabric woven without twisting using ultra-high strength fibers is used as a base fabric, and a synthetic resin film is integrally formed to the required thickness on at least one side of the base fabric, and multiple layers of this are layered. A protective cloth made of (2) The protective fabric according to claim 1, which uses aromatic polyamide fiber, graphite fiber, boron fiber, or inorganic fiber as the ultra-high strength fiber. (3) The protective fabric according to claim 1, in which the base fabric is plain weave or twill weave. (4) The protective fabric according to claim 1, in which the synthetic resin film is formed on the surface of the base fabric by a welding method or an impregnation method. (5) The protective fabric according to claim 1, which is a registered utility model and comprises a synthetic resin film formed on both sides of the base fabric. (6) The protective fabric according to claim 1, in which the synthetic resin is a thermosetting resin. (7) The protective fabric according to claim 1, in which the synthetic resin is a thermoplastic resin.