TWI668405B - Efficient cushioning bulletproof vest - Google Patents

Abstract

The present invention discloses a high-efficiency cushioning bulletproof vest comprising: a shock absorbing gasket; a composite array of anti-ballistic fiber cloth disposed on the shock absorbing gasket; and an outer cloth disposed on the elastic fabric; The shock absorbing gasket is a composite material comprising an energy dissipating colloid material, and each set of ballistic resistant fiber cloth comprises two layers of woven layers which are alternately laminated. Therefore, the high-efficiency cushioning bulletproof vest according to the embodiment of the present invention includes a shock absorbing pad, which further improves the shear resistance of the bulletproof vest, and can effectively reduce the impact force of the bullet on the human body.

Description

Efficient cushioning bulletproof vest

The present invention relates to a bulletproof vest, and more particularly to a high efficiency cushioning bulletproof vest.

The general bullet-proof vest is provided with an anti-ballistic fiber cloth to achieve the anti-ballistic effect, and the anti-elasticity of the bulletproof vest is determined by the number of layers of the anti-ballistic fiber cloth.

Although the bulletproof vest can achieve the bulletproof effect, due to its weak shear resistance, when the person wearing the bulletproof vest is hit by the bullet, the impact of the bullet on the human body will still cause a certain degree of damage. In addition, the existing bulletproof vests are not specially designed for women, which makes women feel uncomfortable when wearing them. To solve this problem, they must be cut and re-joined at the chest line of the bulletproof vest. The anti-elastic fiber of the anti-ballistic fabric inside the bullet-proof vest is reduced.

Therefore, how to propose a bulletproof vest that can effectively solve the above problems is an active disclosure of this case.

One of the objects of the present invention is to provide a high-efficiency cushioning type bulletproof vest, which can effectively reduce the impact force of the bullet on the human body in addition to the bulletproof effect.

In order to achieve the above and other objects, the present invention provides a high-efficiency cushioning type bulletproof vest comprising: a shock absorbing pad; a complex array of anti-ballistic fiber cloth disposed on the shock absorbing pad; and an outer cloth disposed on the same Above the ballistic resistant fiber cloth; wherein the shock absorbing pad is a composite material comprising an energy dissipating colloidal material, and each set of ballistic resistant fiber cloth comprises two layers of woven layers interlaced.

In one embodiment of the invention, the composite material is prepared by kneading a composition and foam molding the composition, wherein the composition comprises: a main substrate, which is based on the total weight of the composition. 50~80 wt%, the main substrate comprises: vinyl acetate; ethylene/vinyl acetate copolymer; sub-substrate, which accounts for 10-40% by weight of the total weight of the composition, and the sub-substrate comprises: poly Ethylene; styrene butadiene rubber; thermoplastic elastomer; and additive, which accounts for 1 to 20 wt% of the total weight of the composition, wherein the shock absorbing gasket has a density of between 0.20 and 0.50, and The bubble ratio is between 20 and 40.

In an embodiment of the invention, the sub-substrate further comprises a binary cerium oxide material comprising: cerium oxide particles; and polydimethyl siloxane.

In one embodiment of the invention, the additive is selected from the group consisting of a blowing agent, a foaming aid, a bridging agent, a bridging aid, a color granule, and a filler.

In one embodiment of the present invention, the two layers of the woven layer are a first woven layer and a second woven layer, and the first woven layer is woven by a plurality of first warp threads and a plurality of first weft threads, each of which The weaving direction of the first warp yarn is a first weaving direction, and the second weaving layer is woven by a plurality of second warp threads and a plurality of second weft threads, wherein the weaving direction of each of the second warp threads is a second weaving direction And the angle between the second weaving direction and the first weaving direction is between 10 degrees and 60 degrees.

In an embodiment of the invention, the angle between the second weaving direction and the first weaving direction is 45 degrees.

In one embodiment of the invention, the two layers of woven layers are all formed in an integrally formed weave.

In an embodiment of the invention, the outer layer is an anti-wear and anti-wear structure.

In one embodiment of the invention, the shock absorbing pad has a thickness of between 6 mm and 9 mm.

Therefore, the high-efficiency cushioning bulletproof vest according to the embodiment of the present invention includes a shock absorbing pad, which further improves the shear resistance of the bulletproof vest, and can effectively reduce the impact force of the bullet on the human body. In some embodiments, each set of anti-elastic fiber cloth comprises two layers of woven layers that are alternately laminated, and the two layers of woven layers are all made by an integrally formed weave, which is suitable for women when the elastic fiber cloth is to be made. The high-efficiency cushioning bullet-proof vest does not require cutting at the chest line to maintain the integrity of the elastic fabric, thereby maintaining the ballistic performance of the highly efficient cushion-type bulletproof vest.

In order to fully understand the present invention, the present invention will be described in detail by the accompanying drawings. Those skilled in the art can understand the objects, features and effects of the present invention from the disclosure of the present specification. It is to be noted that the invention may be embodied or applied in various other specific embodiments, and various modifications and changes can be made without departing from the spirit and scope of the invention. In addition, the drawings attached to the present invention are merely illustrative and not intended to be a The following embodiments will further explain the related technical content of the present invention, but the disclosure is not intended to limit the scope of the patent application of the present invention. The description is as follows:

1 is a partial schematic view of a high efficiency cushioning bulletproof vest 100 according to an embodiment of the present invention. It is to be noted that, in order to more clearly show the technical features of the present invention, only the front layer of the high efficiency cushioning bulletproof vest 100 is illustrated in FIG. 1 and some details are omitted.

As shown in FIG. 1, the high efficiency cushioning bulletproof vest 100 includes a shock absorbing spacer 11, a complex array of anti-ballistic fiber cloth 13, and an outer layer cloth 15. The anti-elastic fiber cloth 13 is disposed on the shock absorbing pad 11, and the outer cloth 15 is disposed on the anti-ballistic fiber cloth 13. In the present embodiment, the shock absorbing pad 11 is a composite material including an Energy Dissipating Gel Material (EDGM), and each set of the ballistic resistant fiber cloth 13 includes two layers of woven layers which are alternately laminated.

Because the energy dissipates the material properties of the colloidal material, it can instantly become high-viscosity or even hard when it encounters strong impact or shearing force, and is used to absorb impact force. Thus, the energy dissipating colloidal material can be considered as a smart protective material, which in this embodiment is used to withstand bullets.

Unlike traditional Shear Thickening Fluid (STF) materials, energy dissipative colloidal materials are not limited by the need to be fluidly applied to the carrier during application (lower impact energy absorption using coating methods) ), the shear thickening fluid material can be directly solidified (colloided) into an energy dissipating colloidal material to enhance the energy absorption effect. In addition, the energy dissipating colloidal material can be completely compatible with Polyurethane (PU) and Ethylene Vinyl Acetate (EVA), which can be directly used in bulletproof vests by making it into a composite material. , to achieve impact resistance, shock absorption effect.

In one embodiment, the composite material is prepared by kneading a composition and foam molding the composition, wherein the composition comprises: a main substrate, which is 50 to 80% of the total weight of the composition. The wt substrate; the sub-substrate, which is 10 to 40 wt% of the total weight of the composition; and the additive, which is 1 to 20 wt% of the total weight of the composition. The primary substrate can include: vinyl acetate, ethylene/vinyl acetate copolymer. The sub-substrate may comprise polyethylene, styrene butadiene rubber, thermoplastic elastomer. In addition, the shock absorbing spacer 11 has a density of between 0.20 and 0.50, and the expansion ratio is between 20 and 40.

For example, in the ethylene/vinyl acetate copolymer, the content of vinyl acetate is 60 to 90% by weight based on the total weight of the ethylene/vinyl acetate copolymer.

In one embodiment, the composition comprises 5 to 10 wt% of vinyl acetate and 40 to 63 wt% of an ethylene/vinyl acetate copolymer; the composition comprises 6 to 18 wt% of polyethylene, 3 ~6 wt% styrene butadiene rubber and 2 to 4 wt% thermoplastic elastomer.

The thermoplastic elastomer is, for example, a styrene ethylene butylene styrene block copolymer, and the additive may be selected from the group consisting of a foaming agent, a foaming aid, a bridging agent, a bridging aid, a color granule, and a filler. .

In certain embodiments, the secondary substrate further comprises a binary cerium oxide material comprising cerium oxide particles and polydimethyl siloxane. For example, the composition comprises from 6 to 18 wt% of a binary cerium oxide material.

Table 1 below is a different formulation ratio for the composition of the composite material, but the invention is not limited thereto.   Example 1-1 Example 1-2 Example 1-3 Main substrate VA (%) 10 6 6 EVA (%) 40 54 58 Substrate PE (%) 18 15 15 SBR (%) 6 3 3 SEBS (%) 4 2 2 Binary bismuth oxide material (%) 12 10 6 Additive blowing agent (%) 2.5 2.5 2.5 Foaming aid (%) 1.5 1.5 1.5 Bridging agent (%) 0.8 0.8 0.8 Bridging aid ( %) 0.7 0.7 0.7 Color (%) 0.5 0.5 0.5 Filler (%) 4 4 4 Table 1  

The proportions of the components in Table 1 are all expressed by weight percentage. Wherein, VA stands for Vinyl acetate; EVA stands for Ethylene-vinyl acetate; PE stands for Polyethylene; SBR stands for Styrene Butadiene rubber; SEBS stands for Styrene Ethylene Butylene Styrene Block Copolymer, which is a thermoplastic elastomer which is commercially available from the market.

A composite material was prepared using the composition of the above Example 1-1. First, the composition as described in Example 1-1 was kneaded. The kneading method and the process conditions are not particularly limited as long as the respective components in the composition of Example 1-1 can be sufficiently mixed. In one embodiment, the composition of Example 1-1 is first placed in a kneader to perform the first stage of kneading, and mixed into a plastic mixture, and the process temperature is controlled, for example, between 80 ° C and 150 ° C, for example, the kneading time is It is 15~30 minutes. Subsequently, the plastic mixture is further kneaded by a double roller, and the process temperature is controlled, for example, between 80 ° C and 130 ° C, and the kneading time is, for example, 3 to 6 minutes.

Next, the above kneaded composition was foam molded in a mold, thereby obtaining a plate-like composite material. The foam molding method and the process conditions are not particularly limited, and a foam molding method known in the art to which the present invention pertains can be used. In one embodiment, the foaming is performed by one-time foam molding using a batch type hydraulic press, and the process temperature is controlled, for example, between 130 ° C and 160 ° C, and the foaming molding time is, for example, 30 to 50 minutes, and the hydraulic press is used. The foaming limit pressure is, for example, 150 kg/cm ² to 250 kg/cm ² . By controlling the above process parameters, the density of the plate-like composite material can be controlled between 0.20 and 0.50, and the expansion ratio is controlled to be between 20 and 40.

Finally, the obtained plate-like composite material is cut, whereby a shock absorbing gasket 11 is obtained. The thickness and shape of the cut shock absorbing spacer 11 are not particularly limited, and those having ordinary knowledge in the technical field of the present invention can cut the obtained plate-like composite material into shock absorption having various thicknesses and shapes. The gasket 11 is adapted to conform to various wearable protective devices, such as male bulletproof vests, female bulletproof vests, helmets, bulletproof masks, knee pads, and elbow pads.

A method of preparing a composite material using the compositions of Examples 1-2, 1-3 is similar to the above method of preparing a composite material using the composition of Example 1-1, but replacing the composition of Example 1-1 with an example Composition of 1-2, 1-3.

In general, the colloidal process is to add a cross-linking agent to the shear thickening solution, and then solidify according to its properties and with the mold and heating, and the shear thickening solution is self-foamed and molded into A shock absorbing gasket 11 of a desired shape. Further, in an embodiment, the thickness of the shock absorbing shim 11 that is cut may be between 6 mm and 9 mm. A too thick shock absorbing pad 11 will increase the weight of the highly effective cushioning bulletproof vest 100, and may also cause inconvenience in wearing; a too thin shock absorbing pad 11 will not achieve the desired cushioning effect. The thickness of the shock absorbing pad 11 of the present invention is not limited to the above range, and may be changed depending on the practical application.

The following is a test of the impact resistance of a general bulletproof vest (test 1) and a highly efficient cushioning bulletproof vest 100 (test 2) of the embodiment of the present invention. The general bulletproof vest includes 45 sheets of anti-elastic fiber cloth (here, the one piece of anti-elastic fiber cloth is a layer of woven layer), and does not have a shock absorbing pad; the high-efficiency cushioning type bulletproof vest 100 of the embodiment of the present invention comprises three A sheet of 3 mm shock absorbing pads 11 (prepared from the composition of Example 1-1 above) and 30 sheets of ballistic resistant fiber cloth were used.

The test method is to attach a general bulletproof vest (test 1) and a high efficiency cushioning bulletproof vest 100 (test 2) of the embodiment of the present invention to the sludge, and the sludge is used to simulate the chest tissue of the human body. Then, respectively, the .44 McGee hollow metal capping bullet was hit into the general bulletproof vest (test 1) and the six shooting positions P1 to P6 corresponding to the high efficiency cushioning bulletproof vest 100 (test 2) of the embodiment of the present invention. . By measuring the depth of the depression of the general bulletproof vest (test 1) and the high-efficiency cushioning bulletproof vest 100 (test 2) of the embodiment of the present invention corresponding to the six shooting positions P1 to P6, it can be known The impact resistance of the general bulletproof vest (test 1) and the highly efficient cushioning bulletproof vest 100 (test 2) of the embodiment of the present invention. The test results are shown in Table 2 below.   Test test elastic shock absorber gasket fiber cloth number sludge depth (mm) 1.44 McGee hollow metal capping bullet no 45 P1:41 P4:42 P2:41 P5:36 P3:28 P6:50 2 .44 麦格侬空尖金属覆弹弹 3 mm Total three pieces 30 P1:36 P4:39 P2:32 P5:26 P3:22 P6:31 Table 2  

Referring to the test results of Table 2, when the high-efficiency cushioning bulletproof vest 100 (test 2) of the embodiment of the present invention is fired by the .44 McGee hollow metal capping bomb, compared to the general bulletproof vest (test 1), The depression depth of the sludge at the shooting position (P1~P6) is shallower than the depression depth of the sludge at all shooting positions (P1~P6) corresponding to the general bulletproof vest (test 1). It can be seen that the impact resistance performance of the high efficiency cushioning bulletproof vest 100 of the embodiment of the present invention is superior to that of a general bulletproof vest.

2 is a partial exploded view of a two-layer braid layer of a group of anti-elastic fiber cloths 13 according to an embodiment of the present invention. As shown in FIG. 2, in the present embodiment, each set of the anti-ballistic fiber cloth 13 of the high-efficiency cushioning type bulletproof vest 100 includes a first woven layer 21 and a second woven layer 22 which are alternately laminated. Here, the first woven layer 21 is woven by a plurality of first warp threads 211 and a plurality of first weft threads 212, and the knitting direction of each of the first warp threads 211 is a first weaving direction A; the second weaving The layer 22 is woven by a plurality of second warp threads 221 and a plurality of second weft threads 222, and the knitting direction of each of the second warp threads 221 is a second weaving direction B.

In this embodiment, the angle between the second weaving direction B and the first weaving direction A may be between 10 degrees and 60 degrees, that is, the weaving direction of the first weaving layer 21 and the second weaving layer 22 The angle between the clips can be between 10 and 60 degrees. For example, the angle between the second weaving direction B and the first weaving direction A may be 45 degrees, that is, the angle between the weaving direction of the first weaving layer 21 and the second weaving layer 22 may be It is 45 degrees.

In the anti-elastic fiber cloth in the general bullet-proof vest, the weaving directions of the respective layers of the woven layers are the same as each other. Compared with the general bulletproof vest, in the present embodiment, since each group of the anti-elastic fiber cloth 13 includes two layers of woven layers (ie, the first woven layer 21 and the second woven layer 22) which are alternately laminated, it is better. Impact resistance.

The impact resistance of the ballistic resistant fiber cloth 13 of this embodiment was tested below. The bulletproof vests of Tests 3 and 4 each comprise a 6 mm shock absorbing pad 11 (prepared from the composition of the above Example 1-1) and 42 sheets of ballistic resistant fiber cloth (here, the piece of ballistic resistant fiber cloth is a layer of woven layer), the difference is that the bullet-proof vest of Test 3, the weaving direction of each layer of the woven layer is the same as each other, and the armor-resistant vest of Test 4, each group of the anti-ballistic fiber cloth comprises two layers of woven layers which are alternately laminated, and The angle between the two braid layers in the weaving direction of each other is 45 degrees.

The bulletproof vests of tests 5 and 6 each comprise a 6 mm shock absorbing gasket 11 (prepared from the composition of the above embodiment 1-1) and 36 sheets of ballistic resistant fiber cloth (here, the one piece of ballistic resistant fiber cloth is a layer of woven layer), the difference is that the bullet-proof vest of test 5, the weaving direction of each layer of woven layer is the same as each other, and the ballistic vest of test 6, each group of anti-ballistic fiber cloth comprises two layers of woven layers which are alternately laminated, and The angle between the two braid layers in the weaving direction of each other is 45 degrees.

The test method is to put the bulletproof vests on the sludge separately. The sludge is used to simulate the chest tissue of the human body, and then the .44 McGee hollow metal capping bullets (tests 3 and 4) are respectively applied to the bulletproof vests. The six shooting positions P1~P6; and the 9 mm round-headed all-metal covered projectile (tests 5, 6) hit the corresponding six shooting positions P1~P6 on the bulletproof vest. The impact resistance of the bulletproof vests can be compared by comparing the depths of the depressions corresponding to the six shooting positions P1 to P6 on the sludges attached to the bulletproof vests of 3 to 6 respectively. The test results are shown in Table 3 below.   Test type test type shock absorbing gasket fiber cloth number oil sludge depression depth (mm) 3 weaving direction is the same as each other. 44 MG 侬 hollow tip metal covering bullet 6 mm 42 P1: 67 P4: 42 P2: 41 P5: 18 P3 :24 P6:31 4 The angle between the weaving directions is 45 degrees. 44 McGee hollow metal covered bullets 6 mm 42 P1:42 P4:35 P2:35 P5:16 P3:18 P6:28 5 The weaving direction is the same as each other. 9 mm round head full metal covered warhead 6 mm 36 P1:25 P4:24 P2:25 P5:18 P3:18 P6:20 6 The angle between the weaving directions is 45 degrees 9 mm round head Full metal coated warhead 6 mm 36 P1:22 P4:23 P2:22 P5:17 P3:18 P6:18 Table 3  

Referring to the test results in Table 3, when the bulletproof vest of Test 4 was shot by the .44 McGee hollow metal capping bullet, the depth of the depression of all the shooting positions (P1~P6) was shallower than the bulletproof vest of Test 3. Corresponding depth of the sludge of all shooting positions (P1~P6); when the bullet-proof vest of test 6 is shot by a 9 mm round-head full-metal coated projectile, the depth of the depression of the shooting positions P1~P2 and P4~P6, It is shallower than the depression depth of the plowing position P1~P2 and P4~P6 corresponding to the bulletproof vest of test 5 (the depression depth of the sludge of the test position P3 of test 6 is the same as the depression depth of the sludge of the test position P3 of test 5) ). It can be seen that the bulletproof vests of Tests 4 and 6 (the respective sets of anti-elastic fiber cloths comprise two layers of woven layers which are alternately laminated, and the angle between the two woven layers in the weaving direction of each other is 45 degrees) The impact resistance is superior to the bulletproof vests of Tests 3 and 5 (the weaving directions of the layers of the layers are the same as each other).

In this embodiment, the ballistic resistant fiber material is made of an aromatic polyamide fiber, but in other embodiments, the ballistic fiber material may be an aromatic polyamide fiber, an ultra high molecular weight polyethylene fiber, or Other materials having similar elastic properties are not limited to this embodiment.

In one embodiment, each set of ballistic resistant fabric 13 comprises two layers of woven layers that are interleaved and that are made in one piece. The fiber cloth woven by the integral molding weave is suitable for shape fixing, which can be formed into a desired shape without cutting. In this way, when the high-efficiency cushioning type bulletproof vest 100 suitable for women is to be made of the elastic fiber cloth 13, it is not necessary to cut the chest line portion to maintain the integrity of the elastic fiber cloth 13, thereby maintaining The elastic resistance of the highly efficient cushioning bulletproof vest 100.

In one embodiment, the outer layer 15 can be an anti-wear and anti-wear structure, such as 100% nylon, which also has the advantage of being convenient to wear.

According to the above description, the high-efficiency cushioning bulletproof vest according to the embodiment of the present invention includes a shock absorbing pad, which further improves the shear resistance of the bulletproof vest, and can effectively reduce the impact force of the bullet on the human body. In some embodiments, each set of anti-elastic fiber cloth comprises two layers of woven layers that are alternately laminated, and the two layers of woven layers are all made by an integrally formed weave, which is suitable for women when the elastic fiber cloth is to be made. The high-efficiency cushioning bullet-proof vest does not require cutting at the chest line to maintain the integrity of the elastic fabric, thereby maintaining the ballistic performance of the highly efficient cushion-type bulletproof vest.

The present invention has been disclosed in the foregoing, and it should be understood by those skilled in the art that the present invention is not intended to limit the scope of the present invention. It should be noted that variations and permutations equivalent to those of the embodiments are intended to be included within the scope of the present invention. Therefore, the scope of protection of the present invention is defined by the scope of the patent application.

100‧‧‧Efficient cushioning bulletproof vest

11‧‧‧Shocking gasket

13‧‧‧Anti-strand fiber cloth

15‧‧‧ outer cloth

21‧‧‧First weave

211‧‧‧First warp

212‧‧‧First weft

22‧‧‧Second woven layer

221‧‧‧second meridian

222‧‧‧second weft

1 is a partial schematic view of a high efficiency cushioning bulletproof vest according to an embodiment of the present invention. 2 is a partial exploded view of a two-layer braid layer of a group of anti-elastic fiber cloths according to an embodiment of the present invention.

Claims (10)

The utility model relates to a high-efficiency cushioning bulletproof vest comprising: a shock absorbing gasket; a multi-array anti-elastic fiber cloth disposed on the shock absorbing gasket; and an outer cloth disposed on the anti-ballistic fiber cloth; wherein the shock absorbing pad The film is a composite material comprising an energy dissipating colloidal material, and each set of ballistic resistant fiber cloth comprises two interwoven layers of interlaced layers. The high-efficiency cushioning type bulletproof vest according to claim 1, wherein the composite material is obtained by kneading a composition and foam molding the composition, wherein the composition comprises: a main substrate, which is The total weight of the composition is 50-80 wt%, and the main substrate comprises: vinyl acetate; ethylene/vinyl acetate copolymer; sub-substrate, which accounts for 10-40% by weight of the total weight of the composition. The substrate comprises: polyethylene; styrene butadiene rubber; thermoplastic elastomer; and an additive, which is 1-20% by weight of the total weight of the composition, wherein the shock absorbing gasket has a density of 0.20 to 0.50. The foaming ratio is between 20 and 40. The high efficiency cushioning bulletproof vest according to claim 2, wherein the secondary substrate further comprises a binary cerium oxide material, the binary cerium oxide material comprising: cerium oxide particles; and polydimethyl siloxane. The high-efficiency cushioning bulletproof vest according to claim 2, wherein the additive is selected from the group consisting of a foaming agent, a foaming aid, a bridging agent, a bridging aid, a color granule, and a filler. The high efficiency cushioning bulletproof vest according to claim 2, wherein the thermoplastic elastomer system is a styrene ethylene butylene styrene block copolymer. The high-efficiency cushioning bulletproof vest according to claim 1, wherein the two layers of the woven layer are a first woven layer and a second woven layer, the first woven layer is woven by a plurality of first warp threads and a plurality of first weft threads The weaving direction of each of the first warp threads is a first weaving direction, and the second weaving layer is woven by a plurality of second warp threads and a plurality of second weft threads, wherein the weaving direction of each of the second warp threads is a second weaving direction, and the second weaving direction is at an angle of 10 to 60 degrees with the first weaving direction. The high efficiency cushioning bulletproof vest according to claim 6, wherein the second weaving direction is at an angle of 45 degrees to the first weaving direction. The high-efficiency cushioning type bulletproof vest according to claim 1, wherein the two layers of the woven layer are each formed by an integrally formed weave. The high-efficiency cushioning type bulletproof vest according to claim 1, wherein the outer layer is a splash-proof structure. The high efficiency cushioning bulletproof vest according to claim 1, wherein the shock absorbing gasket has a thickness of 6 mm to 9 mm.