CN114001590A - Lightweight stab-resistant garment and method for manufacturing same - Google Patents

Abstract

The invention provides a manufacturing method of a lightweight stab-resistant material, wherein the stab-resistant suit comprises a coat and a stab-resistant material arranged in the coat, and the stab-resistant material comprises a stab-resistant chip and a buffer material; the stab-resistant chip is formed by superposing at least 10 layers of non-woven cloth and 1 layer of aramid fiber double-pressure plate; the non-woven fabric is composed of two layers of fiber cloth; the aramid fiber double-pressure plate is formed by orthogonally laminating and pressing 2 layers of non-woven cloth according to the angle of 0 degree/90 degrees. The stab-resistant clothing of the invention has light weight and simple and easy manufacture.

Description

Lightweight stab-resistant garment and method for manufacturing same

Technical Field

The invention relates to a protective product, in particular to a lightweight stab-resistant garment and a manufacturing method thereof.

Background

The stab-resistant suit is a device for defending sharp instruments such as cutters and the like from attacking. According to its development course, stab-resistant suits can be divided into hard, semi-hard and soft stab-resistant suits. With the development of material technology, soft stab-resistant clothing becomes the mainstream of application. The softness and weight of the stab-resistant garment are key points in the application of stab-resistant garments. However, the research on the soft stab-resistant clothes in recent years has found that: materials with excellent stab resistance often sacrifice softness and weight, resulting in poor comfort and flexibility of current soft stab resistant garments.

The performance advantages of the high-performance fiber are fully exerted, and the anti-stab performance and the weight can be simultaneously considered by adopting a corresponding special processing technology. However, investigation finds that the preparation method and the process reported at present have some problems in application, and are difficult to popularize and apply. Therefore, according to the structural characteristics of the aramid laid fabric, the lightweight stab-resistant material is developed, and the flexibility of the personnel wearing the stab-resistant clothing is guaranteed.

Disclosure of Invention

Aiming at the defects of the stab-resistant suit, the invention provides the lightweight stab-resistant suit and the manufacturing method thereof, which are used for overcoming the defects of heavy weight and complex preparation process of the stab-resistant suit in the prior art.

The invention provides lightweight stab-resistant clothing, which comprises an outer sleeve and stab-resistant materials arranged in the outer sleeve, wherein the stab-resistant materials comprise stab-resistant chips and buffer materials;

the stab-resistant chip is formed by superposing at least 10 layers of non-woven cloth and 1 layer of aramid fiber double-pressure plate;

the fiber cloth is formed by bonding fiber yarns through an adhesive;

the puncture-proof clothes of the invention mainly play the roles of bursting and cutting in puncture prevention through different structures of the puncture-proof chip. The manufacturing process of the stab-resistant garment comprises three steps, firstly, bonding fiber yarns by an adhesive to obtain fiber cloth, and orthogonally superposing the two layers of fiber cloth according to the angle of 0 DEG/90 DEG to form weftless cloth; then, 2 layers of non-woven fabrics are overlapped and pressed to complete the preparation of the aramid fiber double-pressure plate; and finally, combining the multi-layer non-woven cloth with the double pressing plates to obtain the stab-resistant chip.

The stab-resistant suit of the invention forms two structures of the weftless fabric and the double-pressure plate on the basis of the weaving process of the weftless fabric, adopts targeted structural design, achieves the effect of defense against bursting and cutting in stab resistance, and finally achieves the result of light weight of the stab-resistant chip.

Specifically, the number of layers of the laid fabric may be determined according to the object to be protected. For example, when meeting the GA68-2019 standard (24J) of the department of public security, the number of required layers of the non-woven cloth is 16-20; when the requirement of larger energy impact (33J) is met, the number of required layers of the non-woven cloth is 20-40; and when the requirement of larger energy impact (43J) is met, the number of the required layers of the non-woven cloth is 40-50. The buffer material can be selected from comfort elastomers such as foamed PP, ethylene-vinyl acetate copolymer, chemical crosslinking polyethylene foam and the like.

Specifically, the areal density of the laid fabric is 100-230g/m². The surface density of the non-woven fabric can be changed by controlling the parameters of the adhesive, the fiber yarns and the hot melt adhesive film. As a result of the studies of the inventors, when the areal density of the non-woven fabric is controlled within the above range, the puncture preventing effect of the puncture preventing chip can be significantly enhanced.

Further, the fiber filaments constituting the fiber cloth are selected from one or more of PBO fibers, aramid fibers, and PE fibers. In the specific manufacture of the fiber cloth, the fiber yarn may preferably be aramid fiber. When the fiber filaments are a mixture of the above fibers, the ratio between the fibers is not limited by the present invention. Preferably, the PBO, aramid and PE fibers have a strength of at least 35cN/dtex and a modulus of at least 1000 cN/dtex.

The invention selects the specific adhesive to be uniformly combined with the fiber to form the puncture-proof chip with the non-woven cloth and the double-pressure plate structure, the structure has certain hardness when the tool tip is punctured, is favorable for resisting bursting, has certain flexibility in the middle stroke process, is favorable for resisting cutting, can effectively prevent the tool from advancing, and realizes a good puncture-proof function. According to the soft stab-resistant mechanism, the stab-resistant material skillfully utilizes the material structure, utilizes the stab-resistant function of the material to the maximum extent, and realizes the lightweight of the stab-resistant chip.

The invention also provides a method for manufacturing the lightweight stab-resistant armor, which comprises the following steps:

1) and (3) laminating and pressing at least 10 layers of the laid fabric and 1 layer of aramid fiber double pressboards. Superposing to obtain the anti-stab chip, and then combining the buffer material and the anti-stab chip by waterproof cloth and sealing and wrapping to obtain the anti-stab material;

2) and arranging the stab-resistant material in the outer sleeve to obtain the lightweight stab-resistant garment.

The implementation of the invention at least comprises the following advantages:

1. the stab-resistant functional material only adopts a weftless fabric structural form, avoids the process complexity caused by various structures of composite materials, and has the advantages of simple and easily obtained manufacturing raw materials, simple manufacturing process and easy operation.

2. The stab-resistant clothes of the invention have light weight, and the stab-resistant chip can be reduced to 1.5 kg/piece (the protection area is 0.26 m)²) Compared with the requirement of the A class in the GA68-2019 standard, the weight of the composite material is 33 percent lighter, and the composite material has obvious weight advantage.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.

The following examples used the raw materials of the cellosilk and the adhesive, and the specific manufacturers and specifications were as follows:

fiber yarn: aramid fiber, available from Aksu of the Netherlands under the trade name Twaron-2000, linear density 1680dtex, fiber diameter of 9-12 gm;

adhesive: waterborne polyurethane, bayer corporation.

Example 1

The manufacturing steps of the stab-resistant garment of the embodiment are as follows:

1) manufacture of non-woven cloth

Putting the waterborne polyurethane adhesive into a glue tank, fixing the fibers on a arranging machine for drying after the fibers are subjected to glue dipping, silk spreading and unwinding by the glue tank to form fiber cloth, and orthogonally superposing the two layers of fiber cloth according to the angle of 0 DEG/90 DEG to form weftless cloth;

2) the two layers of non-woven cloth are orthogonally overlapped according to the angle of 0 DEG/90 DEG, and are pressed by hot pressing to form a double-pressure plate;

3) manufacture of chip for preventing pricking

Cutting the non-woven cloth and the double pressing plate into 50cm multiplied by 50cm, overlapping 15 layers of non-woven cloth and 1 layer of double pressing plate, then overlapping the non-woven cloth and the double pressing plate with the buffer material up and down, and packaging and fixing the non-woven cloth and the double pressing plate by waterproof cloth to obtain the stab-resistant chip.

The stab-resistant core piece is inserted and fixed at the position of the chest of the coat, and the stab-resistant garment of the embodiment is manufactured.

The stab-resistant performance test is carried out on the stab-resistant clothes manufactured in the embodiment, wherein the stab-resistant performance test is carried out according to the standard of "police stab-resistant clothes" of the ministry of public security GA68-2019, and aims to test the stab-resistant clothes manufactured in the invention so as to meet the requirement of stab-resistant clothes issued by the ministry of public security, and the test result is specifically shown in table 1.

Example 2

The manufacturing steps of the stab-resistant garment of the embodiment are as follows:

1) manufacture of non-woven cloth

Putting the waterborne polyurethane adhesive into a glue tank, fixing the fibers on a arranging machine for drying after the fibers are subjected to glue dipping, silk spreading and unwinding by the glue tank to form fiber cloth, and orthogonally superposing the two layers of fiber cloth according to the angle of 0 DEG/90 DEG to form weftless cloth;

2) the two layers of non-woven cloth are orthogonally overlapped according to the angle of 0 DEG/90 DEG, and are pressed by hot pressing to form a double-pressure plate;

3) manufacture of chip for preventing pricking

Cutting the non-woven cloth and the double pressing plate into 50cm multiplied by 50cm, overlapping 12 layers of non-woven cloth and 1 layer of double pressing plate, then overlapping the non-woven cloth and the double pressing plate with the buffer material up and down, and packaging and fixing the non-woven cloth and the double pressing plate by waterproof cloth to obtain the stab-resistant chip.

Example 3

The manufacturing steps of the stab-resistant garment of the embodiment are as follows:

1) manufacture of non-woven cloth

Putting the waterborne polyurethane adhesive into a glue tank, fixing the fibers on a arranging machine for drying after the fibers are subjected to glue dipping, silk spreading and unwinding by the glue tank to form fiber cloth, and orthogonally superposing the two layers of fiber cloth according to the angle of 0 DEG/90 DEG to form weftless cloth;

2) the two layers of non-woven cloth are orthogonally overlapped according to the angle of 0 DEG/90 DEG, and are pressed by hot pressing to form a double-pressure plate;

3) manufacture of chip for preventing pricking

Cutting the non-woven cloth and the double pressing plate into 50cm multiplied by 50cm, overlapping 17 layers of non-woven cloth and 1 layer of double pressing plate, then overlapping the non-woven cloth and the double pressing plate with the buffer material up and down, and packaging and fixing the non-woven cloth and the double pressing plate by waterproof cloth to obtain the stab-resistant chip.

Comparative example 1

The manufacturing steps of the stab-resistant garment of the comparative example are as follows:

1) manufacture of non-woven cloth

Putting the waterborne polyurethane adhesive into a glue tank, fixing the fibers on a arranging machine for drying after the fibers are subjected to glue dipping, silk spreading and unwinding by the glue tank to form fiber cloth, and orthogonally superposing the two layers of fiber cloth according to the angle of 0 DEG/90 DEG to form weftless cloth;

2) manufacture of chip for preventing pricking

Cutting the non-woven cloth into 50cm multiplied by 50cm, overlapping 17 layers of non-woven cloth, then overlapping the non-woven cloth and the buffer material up and down, and packaging and fixing by waterproof cloth to obtain the puncture-proof chip. The stab-resistant core piece is inserted and fixed at the position of the chest of the coat, and the stab-resistant garment of the embodiment is manufactured.

The same test method as that of example 1 was used to test the stab-resistant performance of the stab-resistant armor of this comparative example, and the test results are specifically shown in table 1.

TABLE 1 comparison of puncture resistance results for samples

Note: represents a penetration in the test, with no remaining layers.

From the comparison results in table 1, it can be seen that: the combination of the weftless fabric structure can manufacture the stab-resistant clothes with the stab-resistant function, and the stab-resistant clothes have light weight and simple and easy preparation process.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (4)

1. The lightweight stab-resistant suit is characterized by comprising a coat and a stab-resistant material arranged in the coat, wherein the stab-resistant material comprises a stab-resistant chip and a buffer material;

the stab-resistant material is formed by superposing at least 10 layers of non-woven cloth and 1 layer of aramid fiber double-pressure plate;

the non-woven fabric is composed of two layers of fiber cloth, wherein the two layers of fiber cloth are orthogonally overlapped according to the angle of 0 degree/90 degrees;

the aramid fiber double-pressure plate is formed by orthogonally laminating and pressing 2 layers of non-woven cloth according to the angle of 0 degree/90 degrees.

The fiber cloth is formed by bonding fiber yarns through an adhesive;

the areal density of the laid fabric is 100-²；

2. The fiber cloth according to claim 1, wherein the fiber filaments are selected from one or more of PBO fiber, aramid fiber and PE fiber;

3. the PBO, aramid, and PE fibers of claim 1 having a strength of at least 35cN/dtex and a modulus of at least 1100 cN/dtex.

4. A method for manufacturing a lightweight stab-resistant armor according to any of claims 1 to 3, comprising the steps of:

1) and (3) laminating and pressing at least 10 layers of the laid fabric and 1 layer of aramid fiber double pressboards. Superposing to obtain the anti-stab chip, and then combining the buffer material and the anti-stab chip by waterproof cloth and sealing and wrapping to obtain the anti-stab material;

2) and arranging the stab-resistant material in the outer sleeve to obtain the lightweight stab-resistant garment.