Bulletproof protective material

Abstract

To provide a bulletproof protective member having excellent wearability and impact resistance.SOLUTION: A bulletproof protective member is formed by laminating a laminate containing a bulletproof material, a sheet containing a foamed resin, and a sheet containing a para-aromatic polyamide in this order, has a weight per unit area of the laminate containing the bulletproof member of 6.0 kg / m2 or less, has a minimum penetration velocity (LC) in the NIJ0101.07HG2 class ballistic limit test that meets a reference velocity, has a thickness of the sheet containing the foamed resin of 1.00 mm or more and 5.00 mm or less, and a tensile elongation of 65% or more and less than 300% in both the vertical and horizontal directions, has a sheet containing the para-aromatic polyamide, and the slip resistance in both the vertical and horizontal directions as specified in JIS L 1096 (2010) is 200 N or more and 3,000 N or less, and the Gurley stiffness as specified in JIS L 1096 (2010) is 800 mg or more and less than 10,000 mg.SELECTED DRAWING: None

Description

[Technical Field]

[0001] This invention relates primarily to a ballistic protective component used to protect the body from flying debris and bullets. [Background technology]

[0002] Police officers, security guards, soldiers, and others will wear protective gear with bulletproof capabilities as needed to protect themselves from firearm attacks by criminals, terrorists, enemy soldiers, or suspicious individuals, as well as from flying debris from explosives, while performing their duties.

[0003] Conventionally, materials with ballistic protection properties have included woven fabrics made from high-strength fibers, such as para-aramid fibers, polyethylene fibers, and poly(p-phenylenebenzobisoxazole) fibers, as well as these woven fabrics coated or impregnated with resin, and shielding materials made using these fibers. The term "shielding material" here refers to a ballistic protection material formed by laminating a sheet of high-strength fibers arranged orthogonally at 0 and 90 degrees and impregnated with resin, and then laminating and molding this sheet with a synthetic resin film.

[0004] While these materials offer ballistic protection, they offer little reduction in impact to the human body and are generally used in combination with impact-resistant materials. In recent years, there has been a growing demand for protective equipment that possesses both ballistic and high impact resistance.

[0005] To address these challenges, for example, Patent Document 1 proposes a bulletproof material in which a metal plate and a resin foam sheet are arranged in that order in combination. [Prior art documents] [Patent Documents]

[0006] [Patent Document 1] Japanese Patent Publication No. 2007-57133 [Overview of the project] [Problems that the invention aims to solve]

[0007] However, the protective articles described in Patent Document 1 had poor conformability to the body, were heavy, and were bulky, making them difficult to move in. Furthermore, there was a concern that impact resistance would deteriorate if only bulletproof material with metal plates removed and resin foam sheets were used.

[0008] This invention has been made in view of the above problems, and aims to provide a ballistic protective member that is highly wearable while also possessing impact resistance. [Means for solving the problem]

[0009] The present invention, which solves the aforementioned problems, is characterized by the following (1) to (4).

[0010] (1) A laminate containing a ballistic material, a sheet containing a foamed resin, and a sheet containing a para-type aromatic polyamide are laminated in this order. The weight per unit area of ​​the laminate containing the aforementioned ballistic material is 6.0 kg / m². 2 The following conditions apply: The minimum penetration velocity (LC) in the NIJ0101.07HG2 class ballistic limit test meets the reference velocity. The thickness of the sheet containing the aforementioned foamed resin is 1.00 mm or more and 5.00 mm or less, and the tensile elongation is 65% or more and less than 300% in both the vertical and horizontal directions. A ballistic protective member comprising a sheet containing the aforementioned para-type aromatic polyamide, wherein the slip resistance force in both the longitudinal and transverse directions is 200N or more and 3000N or less as defined in JIS L 1096, and the Gaale stiffness is 800mg or more and less than 10000mg.

[0011] (2) The ballistic protection member according to (1), wherein the thickness of the sheet containing the para-type aromatic polyamide is 0.10 mm or more and less than 1.00 mm.

[0012] (3) The total weight per unit area of ​​the ballistic protection member is 6.5 kg / m 2 The ballistic protection member described in (1) or (2) above, which is as follows:

[0013] (4) The bullet-resistant protective member according to any one of (1) to (3), wherein the total thickness of the bullet-resistant protective member is less than 10.0 mm. Effects of the Invention

[0014] According to the present invention, a protective article that is easy to move when worn and has excellent impact resistance can be obtained. Mode for Carrying Out the Invention

[0015] Hereinafter, embodiments of the present invention will be described in detail.

[0016] The bullet-resistant protective member of the present invention has a laminate containing a bullet-resistant material, a sheet containing a foamed resin, and a sheet containing para-type aromatic polyamide, which are laminated in this order. When the bullet-resistant protective member of the present invention is hit by a bullet, if the laminate containing the bullet-resistant material is placed on the impact side and the sheet containing para-type aromatic polyamide is placed on the protected object side, the laminate containing the bullet-resistant material can first absorb the energy of the bullet when hit. Even if a sheet containing a foamed resin or a sheet containing para-type aromatic polyamide is arranged on the impact side farther from the protected object than the laminate containing the bullet-resistant material, the impact resistance will deteriorate. Further, the sheet containing the foamed resin is arranged between the laminate containing the bullet-resistant material and the sheet containing para-type aromatic polyamide. The inventors have found that when a sheet containing a foamed resin is arranged closest to the protected object, the foamed resin sheet stretches and bites into the protected object due to the impact upon bullet impact, so the impact resistance as a bullet-resistant protective member decreases. On the other hand, when it is arranged at the position farthest from the protected object, a bullet penetrates therethrough, resulting in deterioration of impact resistance.

[0017] (Laminate containing bullet-resistant material) The ballistic protection member of the present invention has a laminate containing a ballistic material. Being a laminate suppresses the concentration of stress at a single point when bent, improving wearability. Here, "laminated body containing a ballistic material" refers to a laminate consisting of layers primarily intended to stop bullets. The material used for the ballistic material is not limited, but examples include woven fabrics made of high-strength fibers, shielding materials, resin-impregnated high-strength fiber woven fabrics, and resin-coated high-strength fiber woven fabrics. Here, a laminate refers to a structure in which two or more layers of ballistic material are laminated together.

[0018] The laminate containing the aforementioned ballistic material has a weight of 6.0 kg / m² per unit area. 2 The following applies: The weight per unit area is 6.0 kg / m². 2 If the weight is larger, the total weight per unit area of ​​the ballistic protection material increases, worsening wearability. The weight per unit area of ​​the laminate is 5.8 kg / m². 2 The following is preferable. On the other hand, from the viewpoint of making it easier to achieve HG2 class in the ballistic limit test described later, the weight per unit area of ​​the laminate is 0.1 kg / m 2 The above is preferable.

[0019] The laminate containing the aforementioned ballistic material meets the minimum penetration velocity (LC) requirement in the HG2 class ballistic limit test of NIJ0101.07 (January 2018 DRAFT version). The HG2 class is the most stringent test condition for soft armor, and meeting this requirement indicates that the soft armor has sufficient performance. If this LC is not met, the bullet will penetrate the laminate containing the ballistic material, and the impact resistance of the ballistic protection component will deteriorate.

[0020] The weight per unit area of ​​the laminate containing the aforementioned ballistic material is 6.0 kg / m². 2 Assuming the following conditions are met, methods to satisfy the HG2 class ballistic limits include, for example, stacking about 10 sheets of Dupont's "Kevlar" (registered trademark) XP series or stacking about 25 sheets of Honeywell's "GoldFlex" (registered trademark).

[0021] (Sheet containing foamed resin) The ballistic protection member of the present invention further comprises a sheet containing foamed resin.

[0022] A sheet containing foamed resin refers to a sheet of plastic material made by foaming resin. Without a sheet containing foamed resin, the desired impact resistance of the ballistic protection component cannot be obtained.

[0023] The constituent materials can include polyethylene resin, polyester resin, vinyl ester resin, polyimide resin, polyolefins such as polypropylene, polyamide, polyester, polyvinyl acetate, polyethersulfone, polyphenylene sulfide, polyetherketone, thermoplastic polyurethane, synthetic rubbers such as butadiene rubber, nitrile rubber, acrylonitrile styrene rubber, neoprene, or elastomers. Among these, one or more thermoplastic resins or elastomers selected from polyethylene-based resins, polyester-based resins, polyurethane-based resins, acrylic-based resins, polycarbonate-based resins, polystyrene-based resins, and fluororesins are preferred because they are soft and provide good wearability.

[0024] The thickness of the sheet containing the foamed resin is 1.00 mm or more and 5.00 mm or less. If the thickness of the sheet is less than 1.00 mm, it is easily torn and the energy dispersion range is narrowed, resulting in less impact mitigation. The thickness of the sheet is preferably 2.00 mm or more. On the other hand, if the thickness of the sheet exceeds 5.00 mm, the total thickness of the ballistic protection member becomes thicker, and wearability decreases. The thickness of the sheet is preferably 4.00 mm or less.

[0025] The tensile elongation of the sheet containing the foamed resin is 65% or more and less than 300% in both the longitudinal and transverse directions. If the tensile elongation is less than 65%, the sheet containing the foamed resin may rupture before the impact mitigation effect can be exerted when an impact is applied. The tensile elongation is preferably 68% or more. On the other hand, if the tensile elongation is 300% or more, the sheet is more likely to deform towards the object being protected when an impact is applied, and the impact resistance deteriorates. The tensile elongation is preferably 260% or less. Here, longitudinal and transverse refer to the orientation direction of the sheet made of foamed resin as longitudinal and the direction perpendicular to it as transverse. For products where the orientation direction is unknown, any one direction can be designated as longitudinal and the direction perpendicular to it as transverse. The tensile elongation can be measured using an autograph by the method described in the examples.

[0026] (Sheet containing para-type aromatic polyamide) The ballistic protection member of the present invention further comprises a sheet containing para-type aromatic polyamide.

[0027] When the ballistic protective member of the present invention is hit by a projectile, if the laminate containing the ballistic material is placed on the impact side and the sheet containing para-type aromatic polyamide is placed on the side facing the object to be protected, the sheet containing para-type aromatic polyamide will be positioned closest to the object to be protected. As a result of their studies, the inventors have found that with this configuration of the ballistic protective member, and because the sheet containing para-type aromatic polyamide has a predetermined slip resistance force and Gaale rigidity, impact resistance can be improved by suppressing the stretching of the sheet containing foamed resin toward the object to be protected, even without the presence of heavy materials such as metal plates.

[0028] The sheet containing the para-type aromatic polyamide is a sheet-like material and is preferably made from a resin-impregnated para-aramid fiber fabric, a resin-coated para-aramid fiber fabric, a woven fabric, a shielding material, a uniaxial or multiaxial structure, etc. Here, "warp" and "weft" refer to the warp and weft directions in a typical woven fabric. In nonwoven fabrics, uniaxial structures, and multiaxial structures, one direction of the fibers is defined as the warp, and the direction perpendicular to it is defined as the weft.

[0029] The sheet containing the para-type aromatic polyamide has a slip resistance, as specified in JIS L 1096 (2010), of 200N or more and 3000N or less in both the warp and weft directions. If the slip resistance is less than 200N, yarns will unravel and impact resistance deteriorates. The slip resistance is preferably 250N or more. On the other hand, if the slip resistance exceeds 3000N, the bullet-resistant protective member increases in hardness, conformability to the body decreases, and wearability deteriorates. The slip resistance is preferably 2500N or less.

[0030] Further, the sheet containing the para-type aromatic polyamide has a Gurley stiffness, as specified in JIS L 1096 (2010), of 800 mg or more and less than 10000 mg in both the warp and weft directions. If the Gurley stiffness is less than 800 mg, impact resistance deteriorates. The Gurley stiffness is preferably 850 mg or more. On the other hand, if the Gurley stiffness exceeds 10000 mg, conformability to the body when worn under impact is poor, and wearing comfort deteriorates. The Gurley stiffness is preferably 8000 mg or less.

[0031] The properties of these sheets containing para-type aromatic polyamide can be controlled by the fiber density in the fabric and the type of resin used, and can also be selected from commercially available shielding materials, woven fabrics, and the like.

[0032] The thickness of the sheet containing the para-type aromatic polyamide is preferably 0.10 mm or more and less than 1.00 mm. When the thickness of the sheet is 0.10 mm or more, impact resistance is further improved. The thickness of the sheet is more preferably 0.30 mm or more. On the other hand, when the thickness of the sheet is less than 1.00 mm, the weight per unit area and the thickness are easily kept within the target ranges, and wearability is further improved. The thickness of the sheet is more preferably 0.80 mm or less.

[0033] (Bullet-resistant protective member) The bullet-resistant protective member of the present invention has a total weight per unit area of 6.5 kg / m 2 or less, which is preferable. When the total weight per unit area is 6.5 kg / m 2The following conditions make the wearer feel less weight and allow for easier movement, thus improving wearability: The total weight per unit area is 6.4 kg / m². 2 The following is more preferable. On the other hand, from the viewpoint of further improving impact resistance, the weight per unit area of ​​the laminate is 0.2 kg / m². 2 The above is preferable.

[0034] The ballistic protective member of the present invention preferably has a total thickness of less than 10.0 mm. A total thickness of less than 10.0 mm allows the wearer to feel less bulkiness, resulting in better wearability. The total thickness is more preferably 9.5 mm or less. On the other hand, the thinner the total thickness, the better, but from the viewpoint of further improving impact resistance, 4.0 mm or more is preferred.

[0035] (Manufacturing method for ballistic protection materials) The ballistic protection member of the present invention can be manufactured by sequentially laminating a laminate containing a ballistic material, a sheet containing a foamed resin, and a sheet containing a para-type aromatic polyamide, all cut to any size. The laminated material can be secured at the edges with tape, sewn, or placed in a bag, but the method is not limited. [Examples]

[0036] The present invention will be specifically described below with reference to examples, but is not limited to these examples.

[0037] (Weight per unit area) The weight per unit area of ​​the laminates containing ballistic material and ballistic protective components was measured using an electronic balance (EK-610i, A&D Co., Ltd.). Specifically, one sheet of each component was cut to a size of 40 cm x 40 cm, and the weight was measured N3 times. This weight was then divided by the area to obtain the weight per unit area for each component. For the laminates, the number of layers based on the examples and comparative examples was added to the obtained weight per unit area for each component to obtain the total weight per unit area of ​​the laminates containing ballistic material and the total weight per unit area of ​​the ballistic protective components.

[0038] (thickness) The thickness was measured using a micrometer (Mitsutoyo CLM1-15QM). Specifically, each component was measured N5 times, and the average value was taken as the thickness of each component. The total thickness of the ballistic protection material was calculated by adding the thickness of each component's layers.

[0039] (Tensile elongation) Tensile elongation was measured using an Autograph (INSTRON, model 5965). Three 2cm x 15cm specimens were taken from both the longitudinal and transverse directions of the foamed resin sheet. The gripping distance was 50mm. The specimen was pulled at 100mm / min, and the tensile elongation was calculated as the average value of the difference between the gripping distance and the fracture point, divided by 50mm.

[0040] (Gale stiffness / softness) The Gaale rigidity test was conducted according to JIS L 1096 (2010) Method A for bending resilience. The test specimens were 89 mm in length and 25 mm in width. Three measurements were taken from each direction (longitudinal and transverse), and the average value was calculated for each direction.

[0041] (Slip resistance (pin hooking method)) The slip resistance test (pin-hooking method) was conducted in accordance with JIS L 1096 (2010) 8.23.3 pin-hooking method. Three 50 mm × 150 mm test specimens were taken from a sheet containing para-type aromatic polyamide, one in one direction of the fibers and the other perpendicular to it. Pins were inserted 5 mm from one end along the long side and the specimens were mounted on a tensile testing machine. The specimens were pulled at a speed of 200 mm / min, and the maximum pull resistance force (N) of the yarn was measured. The average value was defined as the slip resistance force.

[0042] (Ballistic limits test) Ballistic limit tests of the ballistic material-containing laminate were conducted in accordance with NIJ0101.07 (January 2018 DRAFT version). The ballistic material was cut into 40cm squares, and the required number of pieces were laminated. At each of the four corners, the required length of polyester thread (Teijin Limited's "Ace Crown" (registered trademark) #20, 233dTex) was used to sew 5cm lengths along two sides, 1cm from the inside of each side, to form the ballistic material-containing laminate. Ballistic limit tests were conducted for 9mm Luger FMJ RN 124 grains and .44 MAG JHP 240 grains in accordance with HG2 class regulations. The reference cemeteries for the minimum penetration velocity (LC) were 457.1 m / s for 9mm Luger and 445.1 m / s for .44 MAG.

[0043] (wearability) Wearability was evaluated using a three-point bending test fixture as described in JIS K7171. The test specimens were made by cutting ballistic protective material to 25cm x 25cm and securing all four sides with cloth tape (ASKUL, "Genba no Chikara", 0.2mm thick, 50mm wide). The distance between the support points was set to 66mm, and the center of the test specimen was positioned in the middle of this distance. The maximum load was measured when the specimen was pressed 20mm from the surface at a speed of 100mm / min. The test was performed in the vertical and horizontal directions on the firing surface and the opposite surface. A maximum load of less than 60N was marked with ◎, 60N to 75N was marked with ○, and over 75N was marked with ×.

[0044] (Impact resistance) The sample consisted of a laminate containing ballistic material, a sheet containing foamed resin, and a sheet containing para-type aromatic polyamide, each cut into 40cm squares and layered sequentially, with all four sides secured with cloth tape. Shooting tests were conducted according to MIL-STD-662F. The sample was fixed to a surface of modeling clay (Roma Plastilina #1) adjusted to an internal temperature of 40±2℃, with the ballistic material-containing laminate side facing the firing surface. The sights were aimed 7cm from two adjacent sides of the sample. The muzzle was positioned 2.5m from the sample, and a 7.62mm diameter, 2.84g dummy fragmentation projectile (NATO STANDARD STANAG 2920-V2, (2003), manufactured by Asahi Seiki Kogyo Co., Ltd.) was fired at 390±20m / s. The velocity was measured 0.5m in front of the sample. Each test was performed three times. After shooting, the samples were removed, and the depth of the indentation in the modeling clay was measured using calipers. Samples with a maximum indentation of less than 15.0 mm were marked with ◎, those with an indentation of 15.0 mm or more but less than 17.0 mm were marked with ○, and those with an indentation of 17.0 mm or more were marked with ×.

[0045] <Example 1> Kevlar® K520 (manufactured by Dupont, weight per unit area 520g / m²) is a biaxial para-aramid ballistic material. 2 Ten sheets of a 0.52mm thick material were cut into 40cm squares and stacked. At each of the four corners, 1cm from the inside of two sides, a 5cm length was sewn using polyester thread (Teijin Limited's "Ace Crown" (registered trademark) #20, 233dTex). This resulted in a laminate containing ballistic material. The weight per unit area of ​​this laminate containing ballistic material is 5.2kg / m². 2 The LC (Low-Cooling) was 530 m / s with a 9mm Luger and 504 m / s with a 44 MAG.

[0046] The foamed resin sheet is made of polyethylene foam, specifically TorayPEF 30030 (manufactured by Toray Industries, Inc., weight per unit area: 99g / m²). 2A sheet with a thickness of 2.72 mm was used. The tensile elongation of the sheet containing this foamed resin was measured to be 77% in the vertical direction and 75% in the horizontal direction. For the sheet containing para-type aromatic polyamide, "Kevlar" (registered trademark) K520 was selected. The slip resistance of the sheet containing para-type aromatic polyamide was measured to be 297 N in the vertical direction and 320 N in the horizontal direction, and the Gaale stiffness was measured to be 2506 mg in the vertical direction and 1303 mg in the horizontal direction. The sheet containing foamed resin and the sheet containing para-type aromatic polyamide were each cut into 40 cm squares.

[0047] The ballistic protection material was constructed by laminating the prepared ballistic material, a sheet containing foamed resin, and a sheet containing para-type aromatic polyamide in this order, and securing all four sides with cloth tape. The total thickness of this ballistic protection material was 8.4 mm, and the total weight per unit area was 5.8 kg / m². 2 The wearability of this ballistic protection material was excellent with a maximum load of 57N, and its impact resistance was excellent with a dent depth of 14.8mm.

[0048] <Example 2> The laminate containing ballistic material is made of "Kevlar" (registered trademark) S103 (manufactured by Dupont, weight per unit area 510g / m²). 2 A bulletproof protective member was manufactured in the same manner as in Example 1, except that it was changed to a laminate of 10 sheets (0.49 mm thick).

[0049] The weight per unit area of ​​this laminate containing ballistic material is 5.1 kg / m². 2 The LC (Low Collision Factor) was 521 m / s for 9mm Luger and 468 m / s for .44 Magnum. The wearability and impact resistance of the obtained ballistic protection material were checked, and both received an excellent rating. Details are shown in the table.

[0050] <Example 3> The laminate containing ballistic material is a para-aramid shield material "GoldFlex" (registered trademark) (manufactured by Honeywell, weight per unit area: 232 g / m²). 2A ballistic protection member was fabricated in the same manner as in Example 1, except that it consisted of 25 layers of a 0.23 mm thick material. The weight per unit area of ​​this laminate containing the ballistic material was 5.8 kg / m². 2 The LC (Low Collision Factor) was 528 m / s for 9mm Luger and 480 m / s for .44 Magnum. The wearability and impact resistance of the obtained ballistic protection material were checked, and both received an excellent rating. Details are shown in the table.

[0051] <Example 4> A ballistic protective member was fabricated in the same manner as in Example 2, except that the sheet containing para-type aromatic polyamide was replaced with “Kevlar” (registered trademark) S103. When the slip resistance force of “Kevlar” (registered trademark) S103 was measured, it was 282 N vertically and 283 N horizontally. When the Gale stiffness was measured, it was 1178 mg vertically and 962 mg horizontally. When the wearability and impact resistance of the obtained ballistic protective member were checked, both were excellent. Details are shown in the table.

[0052] <Example 5> A sheet containing para-type aromatic polyamide, T713KC (manufactured by Toray Industries, Inc., made by plain weaving "Kevlar" (registered trademark) K29 with a fineness of 1100 dtex at a density of 31 x 31 threads / inch (2.54 cm), coated with amorphous polyester resin), has a weight of 318 g / m² per unit area. 2 A ballistic protective member was fabricated in the same manner as in Example 1, except that the thickness was changed to 0.44 mm. When the slip resistance force of T713KC was measured, it was 1629 N vertically and 2498 N horizontally. When the Gale rigidity was measured, it was 3408 mg vertically and 7819 mg horizontally. The wearability of the obtained ballistic protective member was excellent, and the impact resistance was good. Details are shown in the table.

[0053] <Example 6> A sheet containing foamed resin, TorayPEF 10040 (manufactured by Toray Industries, Inc., weight per unit area 360g / m²) 2 A ballistic protective member was fabricated in the same manner as in Example 1, except that the thickness was changed to 3.81 mm. The resulting ballistic protective member had good wearability and excellent impact resistance. Details are shown in the table.

[0054] <Example 7> The sheet containing foamed resin is "D3O" (registered trademark) LITE (manufactured by D3O, weight per unit area: 1400g / m²). 2 A ballistic protective member was fabricated in the same manner as in Example 1, except that the thickness was changed to 3.88 mm. The wearability and impact resistance of the obtained ballistic protective member were both excellent. Details are shown in the table.

[0055] <Example 8> The sheet containing foamed resin is "D3O" (registered trademark) AeroMax (manufactured by D3O, weight per unit area: 452 g / m²). 2 A ballistic protective member was fabricated in the same manner as in Example 2, except that the thickness was changed to 2.01 mm. The wearability of the obtained ballistic protective member was excellent, and the impact resistance was good. Details are shown in the table.

[0056] <Comparative Example 1> A ballistic protective component was fabricated by removing the foamed resin sheet from the configuration of Example 1. The resulting ballistic protective component had excellent wearability (◎) and poor impact resistance (×). Details are shown in the table.

[0057] <Comparative Example 2> In Example 1, the components of the ballistic protective member were rearranged in the following order: a laminate containing ballistic material, a sheet containing para-aromatic polyamide, and a sheet containing foamed resin. The resulting ballistic protective member showed excellent wearability and poor impact resistance. Details are shown in the table.

[0058] <Comparative Example 3> A ballistic protection member was fabricated by modifying Example 6 to a laminated structure containing two sheets of para-type aromatic polyamide. This ballistic protection member exhibited poor wearability (×) and excellent impact resistance (◎). Details are shown in the table.

[0059] <Comparative Example 4> A ballistic protective component was fabricated by modifying the laminate containing the ballistic material from Example 1 to a laminate of seven sheets of “Kevlar” (registered trademark) K520. The LC of this laminate was 436 m / s with a 9mm Luger and 450 m / s with a .44 MAG. The wearability of the resulting ballistic protective component was excellent, but the bullet penetrated it, resulting in poor impact resistance. Details are shown in the table.

[0060] <Comparative Example 5> The ballistic protection component was fabricated by changing the laminate containing the ballistic material in Example 1 to a laminate of 30 sheets of T713KC. The weight per unit area of ​​this laminate was 9.5 kg / m². 2 The results were as follows: The wearability of the obtained ballistic protection material was poor (×), while its impact resistance was good (〇). Details are shown in the table.

[0061] <Comparative Example 6> A ballistic protective component was fabricated by layering two sheets of Toraypef 10040 with the foamed resin sheet from Example 6. The resulting ballistic protective component had poor wearability and excellent impact resistance. Details are shown in the table.

[0062] <Comparative Example 7> The sheet containing the foamed resin of Example 4 was subjected to NP Gel (manufactured by Taica, weight per unit area 780 g / m²). 2 A ballistic protection component was fabricated by changing the material to a thickness of 2.90 mm. The resulting ballistic protection component had excellent wearability and poor impact resistance. Details are shown in the table.

[0063] <Comparative Example 8> Instead of the foamed resin sheet used in Example 1, a urethane rubber sheet called Nonbren Sheet (manufactured by Hirakata Giken Co., Ltd., weight per unit area: 3.09 kg / m²) was used. 2 A ballistic protection component was fabricated by changing the material to 3.00 mm thick with a hardness of 15 degrees. The resulting ballistic protection component had excellent wearability and poor impact resistance. Details are shown in the table.

[0064] <Comparative Example 9> A ballistic protective component was fabricated by replacing the sheet containing the para-type aromatic polyamide from Example 2 with "GoldFlex" (registered trademark). The slip resistance of "GoldFlex" (registered trademark) was measured at 94N vertically and 92N horizontally. The Gaale stiffness was measured at 2105mg vertically and 1724mg horizontally. The resulting ballistic protective component had excellent wearability and poor impact resistance. Details are shown in the table.

[0065] <Comparative Example 10> Using para-type aromatic polyamide fiber "Kevlar" (registered trademark) K29 with a fineness of 1100 dtex, the density is 22 x 22 strands / inch, and the weight per unit area is 190 g / m². 2 A plain weave fabric with a thickness of 0.25 mm was prepared and named L1022. The slip resistance of L1022 was measured to be 20 N in the vertical direction and 18 N in the horizontal direction, and the Gaale stiffness was measured to be 351 mg in the vertical direction and 306 mg in the horizontal direction. A ballistic protective member was prepared by replacing the sheet containing para-type aromatic polyamide from Example 1 with L1022. The wearability of the obtained ballistic protective member was excellent, and the impact resistance was poor. Details are shown in the table.

[0066] <Comparative Example 11> The warp threads are alternately arranged with "Kevlar" (registered trademark) K29 with a fineness of 1100 dtex and polyester fiber 56-18-262 (manufactured by Toray Industries, Inc.) with a fineness of 56 dtex, and the weft threads are "Kevlar" (registered trademark) K29 with a fineness of 1100 dtex, resulting in a plain weave fabric with a density of 63 x 84 threads / inch (weight per unit area of ​​500 g / m²). 2 A sheet (0.72 mm thick) was fabricated and named DCX. The slip resistance of DCX was measured to be 29 N vertically and 434 N horizontally, and the Gaale rigidity was measured to be 4411 mg vertically and 35288 mg horizontally. A ballistic protective member was fabricated by replacing the sheet containing para-type aromatic polyamide from Example 2 with DCX. The wearability of the obtained ballistic protective member was good, but the impact resistance was poor. Details are shown in the table.

[0067] <Comparative Example 12> Nonwoven fabric KG0301A made of para-type aromatic polyamide fibers (manufactured by Ichikawa Techno Fabrics Co., Ltd., weight per unit area: 263 g / m²) 2 A water-dispersible amorphous saturated copolymer polyester resin (Plascoat "Z-450" manufactured by Go-O Chemical Co., Ltd.) is applied to a 2mm standard thickness, with a weight per unit area after drying of approximately 420g / m². 2 The material was applied using a knife-coat method, dried in a 180°C oven for 5 minutes, and named KG0301AKC. This formed a sheet containing para-type aromatic polyamide. The weight per unit area of ​​KG0301AKC is 429 g / m². 2 The slip resistance was 1060N vertically and 1014N horizontally, and the Gaale rigidity was 62679mg vertically and 47009mg horizontally. A ballistic protective member was fabricated by changing the sheet containing para-type aromatic polyamide in Example 1 to KG0301AKC. The wearability of the obtained ballistic protective member was poor, but the impact resistance was excellent. Details are shown in the table.

[0068] [Table 1]

[0069] [Table 2]

[0070] [Table 3]

[0071] [Table 4] [Industrial applicability]

[0072] The ballistic protection material according to the present invention is not limited to ballistic protection clothing worn by police officers, security guards, etc., as described above, but can also be used for armor applications on vehicles, ships, etc. Because the armor is less likely to deform upon impact, power equipment, communication equipment, etc. can be protected from damage.

Claims

1. A laminate containing ballistic material, a sheet containing foamed resin, and a sheet containing para-type aromatic polyamide are laminated in this order. The weight per unit area of ​​the laminate containing the aforementioned ballistic material is 6.0 kg / m². ２ The following conditions apply: The minimum penetration velocity (LC) in the NIJ0101.07HG2 class ballistic limit test meets the reference velocity. The thickness of the sheet containing the aforementioned foamed resin is 1.00 mm or more and 5.00 mm or less, and the tensile elongation is 65% or more and less than 300% in both the vertical and horizontal directions. The sheet containing the aforementioned para-type aromatic polyamide has a slip resistance force of 200 N or more and 3000 N or less in both the longitudinal and transverse directions, as defined in JIS L 1096 (2010), and a Gaale stiffness / softness of 800 mg or more and less than 10000 mg, A ballistic protection material having a total weight per unit area of ​​6.5 kg / m² or less.

2. The ballistic protection member according to claim 1, wherein the thickness of the sheet containing the para-type aromatic polyamide is 0.10 mm or more and less than 1.00 mm.

3. The ballistic protection member according to claim 1 or 2, wherein the total thickness of the ballistic protection members is less than 10.0 mm.

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