Bulletproof structure woven in three directions

Abstract

The invention discloses a three-way woven bulletproof structure which comprises weft yarns, the weft yarns are distributed in parallel at equal intervals in the latitude direction, first obliquely-arranged warp yarns are woven on the multiple weft yarns, second obliquely-arranged warp yarns are further woven on the multiple weft yarns, the oblique directions of the first warp yarns and the second warp yarns are opposite, and the first warp yarns and the second warp yarns are arranged in a staggered mode. The first warp and the second warp are symmetrically distributed relative to the center of the connecting point where the first warp and the second warp intersect with the weft, the weft, the first warp and the second warp form a bulletproof woven structure distributed in the three-axial direction on a two-dimensional plane, and the bulletproof woven structure distributed in the three-axial direction is beneficial to forming of stress propagation channels in multiple directions. The aim of remarkably improving the bulletproof effect is achieved. The weft yarn, the first warp yarn and the second warp yarn adopted by the bulletproof material form a bulletproof woven structure distributed in the three axial directions on a two-dimensional plane, impact energy can be efficiently dispersed through stress propagation distributed in the three axial directions, local stress concentration is avoided, the breakdown resistance of the bulletproof material is remarkably improved, and the bulletproof material is suitable for production of various protective equipment.

Description

Technical Field

[0001] The invention relates to the technical field of bulletproof structures, and in particular to a three-way woven bulletproof structure. Background Art

[0002] Bulletproof vests are the main equipment for individual soldiers to protect themselves from bullets or shrapnel. Bulletproof vests are divided into hard body bulletproof vests and soft body bulletproof vests. Hard body bulletproof vests have good bulletproof effect, but they are bulky and have poor flexibility. Wearing them for a long time consumes a lot of physical energy and are inconvenient to carry. Soft body bulletproof vests are small in size, highly flexible, and easy to carry, so they are favored by individual soldiers.

[0003] The structure of existing bulletproof vests is generally composed of multiple layers of bulletproof materials stacked together, roughly including a ceramic layer on the outer surface, an aramid fiber layer, an upgraded apex layer of the aramid fiber layer, and a polyethylene terephthalate layer. Bullets contact the above-mentioned single-layer structures respectively, absorbing the bullet's speed and kinetic energy, thereby reducing the damage of the bullet to the body.

[0004] When producing the aramid fiber layer, it is necessary to use fiber filaments to weave it to form an aramid fiber layer structure. The existing weaving method is mostly a two-way weaving structure in a two-dimensional plane, that is, a weaving method that crosses horizontally and vertically. Although it can solve the damage to the body caused by bullets, when the bullet hits the aramid fiber layer, the above fiber filament weaving method is easily pulled to a large extent, causing the fiber filaments to separate, forming gaps for the bullet to pass through, resulting in a decrease in the overall bulletproof vest's protection rate against bullets, which is easy to cause certain damage to the body. Therefore, it is urgent to design a three-way woven bulletproof structure to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a three-way woven bulletproof structure to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions: A three-way woven bulletproof structure includes weft yarns, wherein the weft yarns are equidistantly distributed in parallel along the latitude direction, and two groups of warp yarns are obliquely interwoven on the weft yarns: warp yarn 1 and warp yarn 2. The equidistantly distributed parallel weft yarns are interwoven with a plurality of warp yarns 1 and warp yarn 2. The oblique directions of warp yarn 1 and warp yarn 2 are opposite, and warp yarn 1 and warp yarn 2 are symmetrically distributed relative to the center of the connection point intersecting with the weft yarn. The weft yarns, warp yarn 1 and warp yarn 2 form a three-axially distributed bulletproof woven structure on a two-dimensional plane, and the three-axially distributed bulletproof woven structure helps to form a multi-directional stress propagation channel, thereby achieving the purpose of significantly improving the bulletproof effect.

[0007] Preferably, a plurality of weft yarns are woven together by obliquely arranged warp yarns 1; wherein the angle between the weft yarns and the warp yarns 1 is , 0-45 degrees.

[0008] Preferably, a plurality of weft yarns are further woven twice by obliquely arranged warp yarns 2, wherein the angle between the weft yarns and the warp yarns 2 is , It is 45-90 degrees.

[0009] Preferably, the weft yarn, the first warp yarn and the second warp yarn are woven with aramid fibers to form a fiber rope.

[0010] Preferably, the weft yarn, the first warp yarn and the second warp yarn form a single-layer woven structure, and several layers of the single-layer woven structure are coated with glue and pressed at high temperature to obtain a multi-layer bulletproof structure.

[0011] Preferably, the three-way woven bulletproof structure further includes a core mold, which is a skeleton, and the skeleton is a pyramid structure formed by convex and concave; the skeleton is an integrally formed structure, and the weft yarn, warp yarn one and warp yarn two are alternately woven on the core mold.

[0012] Preferably, the weft yarn, warp yarn one and warp yarn two have the same structure, and the weft yarn has a flat outer structure.

[0013] Preferably, the weft yarn, warp yarn one and warp yarn two are woven together on the core mold to form a skeleton support, and several layers of single-layer woven structures are superimposed and woven with the weft yarn, warp yarn one and warp yarn two, and then coated with glue and pressed at high temperature to obtain a multi-layer composite bulletproof structure.

[0014] Preferably, the glue is BD816 bulletproof vest special glue, or a glue obtained by a mixed formula of natural latex, acetic acid acrylic emulsion adhesive, water-based epoxy adhesive and tackifying resin.

[0015] Preferably, the steps of high temperature pressing of the plurality of single-layer woven structures are: ABS resin is heated to 175-190°C for melting, and then mixed with polycarbonate, nano titanium dioxide, flame retardant, reinforcing agent, glass fiber, and ceramic fiber, and stirred at a high speed of 400-600r / min for 15-30 minutes to ensure uniform mixing; Subsequently, the mixed rubber material is extruded at a speed of 5-10 kg / min, and the mixed rubber material and glue are coated on the upper and lower surfaces of the two-layer single-layer woven structure, and rolled on both sides of the single-layer bulletproof structure with a calender at a temperature of 70-100°C to produce a multi-layer bulletproof structure.

[0016] In the above technical solution, the present invention provides a three-way woven bulletproof structure, which has the following beneficial effects: The three-way woven bulletproof structure of the present invention uses weft yarn, warp yarn one and warp yarn two to form a three-axially distributed bulletproof woven structure on a two-dimensional plane, forming a three-way stress propagation, achieving the purpose of improving stress propagation and assisting stress propagation, and improving the performance of the bulletproof structure. By carefully designing the angles of weft yarn, warp yarn one and warp yarn two, combining the design of single-layer and multi-layer composite structures, using core mold support, glue coating and high-temperature pressing processes, the goal of significantly improving bulletproof performance is finally achieved. Through the three-axially distributed stress propagation, the impact energy can be efficiently dispersed, local stress concentration is avoided, and the anti-puncture ability of the bulletproof material is significantly enhanced, which is suitable for the production of various types of protective equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 A three-dimensional diagram of a single-layer woven structure provided for an embodiment of a three-way woven bulletproof structure of the present invention.

[0019] Figure 2 A top view of a single-layer woven structure provided for a three-way woven bulletproof structure embodiment of the present invention.

[0020] Figure 3 A partial enlarged view of a single-layer woven structure provided for an embodiment of a three-way woven bulletproof structure of the present invention.

[0021] Figure 4 A partial diagram of the weft and warp yarn structures provided for a three-way woven bulletproof structure embodiment of the present invention.

[0022] Figure 5 A schematic diagram of a single-layer braided structure and a multi-layer composite structure provided for a three-way braided bullet-proof structure embodiment of the present invention.

[0023] Figure 6 A schematic diagram of various braiding pattern structures provided for a three-way braided bulletproof structure embodiment of the present invention.

[0024] Figure 7 A schematic diagram of a woven structure of multiple materials provided for a three-way woven bulletproof structure embodiment of the present invention.

[0025] Markings in the figure: 1. Weft yarn; 2. Warp yarn one; 3. Warp yarn two. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0027] like Figure 1-5 As shown, a three-way woven bulletproof structure provided by an embodiment of the present invention includes a weft yarn 1, which is equidistantly distributed in parallel along the latitude direction, and two groups of warp yarns are obliquely interwoven on the weft yarn 1: warp yarn 1 2 and warp yarn 2 3. The equidistantly distributed parallel weft yarns 1 are interwoven with a plurality of warp yarns 1 2 and warp yarn 2 3. The oblique directions of the warp yarn 1 2 and the warp yarn 2 3 are opposite, and the warp yarn 1 2 and the warp yarn 2 3 are symmetrically distributed relative to the center of the connection point intersecting with the weft yarn 1. The weft yarn 1, the warp yarn 1 2 and the warp yarn 2 3 form a three-axially distributed bulletproof woven structure on a two-dimensional plane, and the three-axially distributed bulletproof woven structure helps to form a multi-directional stress propagation channel, thereby achieving the purpose of significantly improving the bulletproof effect.

[0028] The present invention provides a three-way woven bulletproof structure, which adopts weft yarn 1, warp yarn 2 and warp yarn 3 to form a three-axially distributed bulletproof woven structure on a two-dimensional plane, forming three-way stress propagation, thereby achieving the purpose of improving stress propagation and assisting stress propagation. The structural design has both efficient stress propagation and mechanical properties, and can significantly improve the bulletproof effect.

[0029] In this embodiment, the weft yarns 1 included in the three-way woven bulletproof structure are transverse woven ropes that are equidistantly distributed in parallel along the latitude direction.

[0030] In this embodiment, a plurality of weft yarns 1 are woven together by warp yarns 1 2 arranged obliquely; wherein the angle between the weft yarn 1 and the warp yarn 1 2 is , The angle between the weft yarn 1 and the warp yarn 2 is preferably 45 degrees, wherein when the angle is 45 degrees, the fabric exhibits the best energy absorption performance, and can disperse and absorb external impact force to the greatest extent, so that the woven structure can efficiently disperse stress in all directions and prevent local stress concentration from causing material damage.

[0031] In this embodiment, a plurality of weft yarns 1 are further woven twice by obliquely arranged warp yarns 2 3, wherein the angle between the weft yarn 1 and the warp yarn 2 3 is , The angle between the weft yarn 1 and the warp yarn 2 is preferably 45-90 degrees, and the angle between the weft yarn 1 and the warp yarn 2 is preferably 90 degrees. This angle design ensures that the warp yarn 1 and the warp yarn 2 are tilted at appropriate angles, thereby enhancing the impact resistance of the fabric and ensuring that the warp yarn can transmit and disperse impact energy in different directions in the structure.

[0032] In this embodiment, the oblique directions of warp yarn 1 2 and warp yarn 2 3 are opposite, and warp yarn 1 2 and warp yarn 2 3 are symmetrically distributed relative to the center of the connection point intersecting with the weft yarn 1, and the weft yarn 1, warp yarn 1 2 and warp yarn 2 3 form a tri-axially distributed bulletproof woven structure on a two-dimensional plane, and the weft yarn 1, warp yarn 1 2 and warp yarn 2 3 are woven with aramid fibers to form a fiber rope.

[0033] In this embodiment, aramid fiber is used as the weaving material of weft yarn 1, warp yarn 1 2 and warp yarn 2 3 to form a single-layer bulletproof fabric. Compared with the traditional unidirectional or bidirectional weaving structure, the three-way weaving structure can show a better stress dispersion effect and can effectively slow down the penetration speed of ballistic objects. Through the design of the three-way weaving structure, the impact force can be dispersed in different directions, thereby enhancing the overall bulletproof performance.

[0034] In this embodiment, the weft yarn 1, the warp yarn 2 and the warp yarn 3 form a single-layer woven structure, and several layers of the single-layer woven structure are coated with glue and pressed at high temperature to obtain a multi-layer bulletproof structure.

[0035] In some embodiments, see Figure 5 As shown, a three-way woven bulletproof structure provided by the present invention also includes a core mold, the core mold is a skeleton, and the skeleton is a pyramid structure formed by convex and concave. In this embodiment, the skeleton is an integrated structure, and the weft yarn 1, the warp yarn 2 and the warp yarn 3 are alternately woven on the core mold.

[0036] Among them, the weft yarn 1, the warp yarn 2 and the warp yarn 3 are all woven on the core mold, and the weft yarn 1, the warp yarn 2 and the warp yarn 3 used in the weaving have the same structure, and the outer periphery of the weft yarn 1 is a flat structure.

[0037] In this embodiment, the weft yarn 1, the warp yarn 2 and the warp yarn 3 are woven on the core mold to form a single-layer woven structure supported by a skeleton. Several layers of the single-layer woven structures are superimposed and woven with the weft yarn 1, the warp yarn 2 and the warp yarn 3, and then coated with glue and pressed at high temperature to obtain a multi-layer composite bulletproof structure.

[0038] Among them, the three-way woven single-layer structure made of aramid fiber is pressed at high temperature and coated with glue to obtain a multi-layer composite structure, which shows obvious bulletproof effect. Especially in the multi-layer composite structure, the role of glue strengthens the bonding between the layers and avoids the performance degradation caused by structural looseness. The multi-layer composite structure significantly improves the bulletproof performance and durability by adding protective layers layer by layer and enhancing adhesion.

[0039] In this embodiment, the glue used is BD816 bulletproof vest special glue, and the glue obtained by mixing natural latex, acetic acid acrylic emulsion adhesive, water-based epoxy adhesive and tackifying resin can also be used.

[0040] Between the multi-layer structure, BD816 bulletproof vest special glue is used for coating, combined with natural latex, acetic acid acrylic emulsion and other materials. The glue is bonded to the woven structure through a high-temperature pressing process, which enhances the overall impact resistance. During the high-temperature pressing process, ABS resin, polycarbonate, nano-titanium dioxide and other materials are mixed, further enhancing the strength of the composite bulletproof structure.

[0041] Moreover, by using BD816 glue for coating and heating at 175-190℃, the composite bulletproof structure exhibited excellent impact resistance, successfully blocked the penetration of high-speed bullets, and had strong durability. The glue and high-temperature pressing process enhanced the strength and impact resistance of the composite structure and extended the service life of the bulletproof clothing.

[0042] In this embodiment, the steps of high temperature pressing of several layers of single-layer braided structures are as follows: ABS resin is heated to 175-190°C for melting, and then mixed with polycarbonate, nano titanium dioxide, flame retardant, reinforcing agent, glass fiber, and ceramic fiber, and stirred at a high speed of 400-600r / min for 15-30 minutes to ensure uniform mixing; Subsequently, the mixed rubber material is extruded at a speed of 5-10 kg / min, and the mixed rubber material and glue are coated on the upper and lower surfaces of the two-layer single-layer woven structure, and rolled on both sides of the single-layer bulletproof structure with a calender at a temperature of 70-100°C to produce a multi-layer bulletproof structure.

[0043] The core mold is made of ABS resin and polycarbonate composite to ensure that the core mold has good mechanical strength and shape retention. In actual bulletproof tests, the support of the core mold enhances the stability of the woven structure and effectively improves the comfort and protective effect of the bulletproof suit. The use of the core mold provides structural support, allowing the bulletproof woven material to maintain its shape and improve its overall performance.

[0044] Working principle: (1) Select the core mold and weave the weft yarn 1 on the core mold in an equidistant straight line; (2) Select warp yarn 2 and weave it on weft yarn 1 and the core mold in an oblique manner; (3) Warp yarn 2 3 is selected and woven on weft yarn 1 and the core mold in an oblique manner opposite to that of warp yarn 1 2; (4) The weaving in (2) and (3) above is in an alternating manner, that is, a warp yarn 2 is woven on the weft yarn 1, and then a warp yarn 2 3 in another oblique direction is woven, thereby forming a triaxial bulletproof woven structure.

[0045] (5) Several layers of single-layer woven structures are stacked and woven with each other through weft yarn 1, warp yarn 2 and warp yarn 3, and then coated with glue and pressed at high temperature to obtain a multi-layer composite bulletproof structure.

[0046] In some embodiments, see Figure 6 As shown, the three-way woven bulletproof structure of the embodiment of the present invention comprises a weft yarn 1, a warp yarn 2 and a warp yarn 3, see Figure 6 As shown in a, the bundled weft yarn 1, the warp yarn 1 2 and the warp yarn 2 3 are cross-woven in three directions, wherein the bundled weft yarn 1, the bundled warp yarn 1 2 and the bundled warp yarn 2 3 are all flat structures, cross-woven with each other to form a bulletproof structure. Figure 6 As shown in b, the bundled weft yarns 1, the warp yarns 1 and the warp yarns 2 are cross-woven in three directions, wherein the bundled weft yarns 1, the bundled warp yarns 1 and the bundled warp yarns 2 are all flat structures, and two bundles of mutually parallel weft yarns 1 are alternately woven with two bundles of mutually parallel warp yarns 1 and two bundles of mutually parallel warp yarns 2, respectively, and cross-woven to form a bulletproof structure. Figure 6 As shown in c, the bundled weft yarns 1, warp yarns 2 and warp yarns 3 are cross-woven in three directions, wherein the bundled weft yarns 1 are longitudinally parallel and spaced apart, and the bundled warp yarns 2 and the bundled warp yarns 3 are cross-woven relative to the weft yarns 1 to form a bulletproof structure.

[0047] In some embodiments, see Figure 7 As shown, the three-way woven bulletproof structure of the embodiment of the present invention comprises a weft yarn 1, a warp yarn 2 and a warp yarn 3, Figure 7 As shown in a, the weft yarn 1, the warp yarn 2 and the warp yarn 3 are three-way cross-woven to form a bulletproof structure of the aramid-based triaxial braid. Figure 7 As shown in b, the bundled weft yarn 1, warp yarn 1 2 and warp yarn 2 3 are cross-woven in three directions, wherein the weft yarn 1, warp yarn 1 2 and warp yarn 2 3 are made of aramid carbon fiber material, the bundled weft yarn 1, the bundled warp yarn 1 2 and the bundled warp yarn 2 3 are all flat structures, and two bundles of mutually parallel weft yarns 1 are alternately woven with two bundles of mutually parallel warp yarns 1 2 and two bundles of mutually parallel warp yarns 2 3 in sequence, and cross-woven to form a bulletproof structure of aramid carbon fiber blended dense triaxial fabric. Figure 7 As shown in Figure c, the bundled weft yarn 1, the warp yarn 1 2 and the warp yarn 2 3 are cross-woven in three directions, wherein the weft yarn 1, the warp yarn 1 2 and the warp yarn 2 3 are made of carbon fiber material, and the bundled weft yarn 1, the bundled warp yarn 1 2 and the bundled warp yarn 2 3 are cross-woven along three axes to form a bulletproof structure of a carbon fiber dense triaxial fabric. Figure 7 As shown in d, the bundled weft yarns 1, warp yarns 2 and warp yarns 3 are cross-woven in three directions, wherein the weft yarns 1, warp yarns 2 and warp yarns 3 are made of carbon fiber materials, the bundled weft yarns 1 are longitudinally parallel and spaced apart, the bundled warp yarns 1 and the bundled warp yarns 2 and 3 are cross-woven relative to the weft yarns 1, forming a bulletproof structure of a carbon fiber triaxial woven fabric.

[0048] The three-way woven bulletproof structure of the present invention adopts weft yarn 1, warp yarn 2 and warp yarn 3 to form a three-axially distributed bulletproof woven structure on a two-dimensional plane, forming three-way stress propagation, achieving the purpose of improving stress propagation and assisting stress propagation, and improving the performance of the bulletproof structure.

[0049] The three-way woven bulletproof structure of the present invention achieves the goal of significantly improving the bulletproof performance by carefully designing the angles of the weft yarn 1, the warp yarn 1 2 and the warp yarn 2 3, combining the design of the single-layer and multi-layer composite structure, and adopting the core mold support, glue coating and high-temperature pressing process. Through the stress propagation of the triaxial distribution, the impact energy can be efficiently dispersed, the local stress concentration can be avoided, and the anti-penetration ability of the bulletproof material is significantly enhanced, which is suitable for the production of various types of protective equipment.

[0050] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A three-way woven bulletproof structure, characterized in that: The invention comprises a weft yarn (1), wherein the weft yarn (1) is equidistantly distributed in parallel along the latitude direction, and two groups of warp yarns are obliquely interwoven on the weft yarn (1): a first warp yarn (2) and a second warp yarn (3); the equidistantly distributed parallel weft yarns (1) are interwoven with a plurality of first warp yarns (2) and second warp yarns (3); the oblique directions of the first warp yarn (2) and the second warp yarn (3) are opposite, and the first warp yarn (2) and the second warp yarn (3) are symmetrically distributed relative to the center of the connection point where they intersect with the weft yarn (1); the weft yarn (1), the first warp yarn (2) and the second warp yarn (3) form a triaxially distributed bulletproof braided structure on a two-dimensional plane.

2. A three-way woven bulletproof structure according to claim 1, characterized in that: A plurality of weft yarns (1) are woven together through a warp yarn (2) arranged obliquely; wherein the angle between the weft yarn (1) and the warp yarn (2) is , 0-45 degrees.

3. A three-way woven bulletproof structure according to claim 2, characterized in that: The plurality of weft yarns (1) are further woven twice by obliquely arranged warp yarns (3), wherein the angle between the weft yarns (1) and the warp yarns (3) is , It is 45-90 degrees.

4. A three-way woven bulletproof structure according to claim 1, characterized in that: The weft yarn (1), the first warp yarn (2) and the second warp yarn (3) are woven with aramid fibers to form a fiber rope.

5. A three-way woven bulletproof structure according to claim 4, characterized in that: The weft yarn (1), the first warp yarn (2) and the second warp yarn (3) form a single-layer woven structure, and a plurality of single-layer woven structures are coated with glue and pressed at high temperature to obtain a multi-layer bulletproof structure.

6. A three-way woven bulletproof structure according to claim 1, characterized in that: It also includes a core mold, which is a skeleton, and the skeleton is a pyramid structure formed by convex and concave shapes; the skeleton is an integrally formed structure, and the weft yarn (1), the first warp yarn (2) and the second warp yarn (3) are alternately woven on the core mold.

7. A three-way woven bulletproof structure according to claim 6, characterized in that: The weft yarn (1), the first warp yarn (2) and the second warp yarn (3) have the same structure, and the outer periphery of the weft yarn (1) is a flat structure.

8. A three-way woven bulletproof structure according to claim 7, characterized in that: The weft yarn (1), the first warp yarn (2) and the second warp yarn (3) are woven together on the core mold to form a skeleton support, and a plurality of single-layer woven structures are superimposed and woven by interlacing the weft yarn (1), the first warp yarn (2) and the second warp yarn (3), and then coated with glue and pressed at high temperature, thereby obtaining a multi-layer composite bulletproof structure.

9. A three-way woven bulletproof structure according to claim 5 or 8, characterized in that: The glue is BD816 bulletproof vest special glue, or a glue obtained by a mixed formula of natural latex, acetic acid acrylic emulsion adhesive, water-based epoxy adhesive and tackifying resin.

10. A three-way woven bulletproof structure according to claim 5, characterized in that: The steps of high temperature pressing of several layers of single-layer woven structures are as follows: ABS resin is heated to 175-190°C for melting, and then mixed with polycarbonate, nano titanium dioxide, flame retardant, reinforcing agent, glass fiber, and ceramic fiber, and stirred at a high speed of 400-600r / min for 15-30 minutes to ensure uniform mixing; Subsequently, the mixed rubber material is extruded at a speed of 5-10 kg / min, and the mixed rubber material and glue are coated on the upper and lower surfaces of the two-layer single-layer woven structure, and rolled on both sides of the single-layer bulletproof structure with a calender at a temperature of 70-100°C to produce a multi-layer bulletproof structure.

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