CN105571397A - Bulletproof vest - Google Patents
Bulletproof vest Download PDFInfo
- Publication number
- CN105571397A CN105571397A CN201510995575.6A CN201510995575A CN105571397A CN 105571397 A CN105571397 A CN 105571397A CN 201510995575 A CN201510995575 A CN 201510995575A CN 105571397 A CN105571397 A CN 105571397A
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- CN
- China
- Prior art keywords
- hard
- layer
- hard sheet
- ballistic
- flak jackets
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
- F41H1/00—Personal protection gear
- F41H1/02—Armoured or projectile- or missile-resistant garments; Composite protection fabrics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/56—Damping, energy absorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2437/00—Clothing
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
- Professional, Industrial, Or Sporting Protective Garments (AREA)
Abstract
The invention discloses a bulletproof vest which comprises at least two layers of composite bulletproof layers. Each composite bulletproof layer is composed of a hard bulletproof layer body and a soft bulletproof layer body from outside to inside in the trajectory direction. Each hard bulletproof layer body is formed by hinging a plurality of protruding hard pieces in the direction opposite to the trajectory direction. A metal wire screen woven transversely and longitudinally is further clamped between the hard pieces. According to the bulletproof vest, the original arrangement that a composite bulletproof layer is composed of one hard bulletproof layer body and one soft bulletproof layer body is changed; under the condition that the overall thickness is unchanged, the composite bulletproof layer is composed of the multiple layers of hard bulletproof layer bodies and soft bulletproof layer bodies, absorption and buffer of bullet energy are reinforced, and the bulletproof effect is better.
Description
Technical field
The present invention relates to watch box harness field, particularly relate to a kind of flak jackets.
Background technology
Flak jackets (BulletproofVest), for protecting bullet or shell fragment to the injury of human body, be developed so far, the flak jackets of combined type is widely used, namely with Lightweight ceramic ceramics for skin, the contour performance fabric of Kevlar is as internal layer.Soft ballistic internal layer as individual layer superimposed without latitude cloth after can be used as the trunk structure of soft body armor, multilayer compacting then can become for hard ballistic materials such as shellproof reinforcement plates, major part body energy is the fiber place near shock point or shock point, makes fibrous fracture and absorbed by excessive tensile or pierce through; And in needling non-woven felt, there is the fracture of fiber hardly, needling non-woven felt is made up of a large amount of short fiber, there is not intertwined point, does not almost have the fixing point of strain wave to reflect.Its bulletproof effect depends on that bullet impact can diffusion velocity in felt.The impact energy of its depression after hard ballistic skin then hits by body and the absorption body that breaks.Although the scheme of " using both hard and soft tactics " largely improves the bulletproof effect of flak jackets really, its bulletproof effect of flak jackets that simple one deck hard ballistic layer adds one deck soft ballistic layer is still inadequate.
Summary of the invention
The technical problem that the present invention mainly solves is, provides a kind of bulletproof ability far above the bullet-proof cloth of thickness flak jackets of the same race.
The technical solution adopted for the present invention to solve the technical problems is: flak jackets, comprises at least two-layer bulletproof composite layer, and described bulletproof composite layer is formed by along the hard ballistic layer of ballistic path direction ecto-entad and soft ballistic layer.Become two-layer even more by common one deck bulletproof composite layer (i.e. hard ballistic layer and soft ballistic layer), form the circulation of multiple body energy absorption, depression after being hit by body by repeatedly hard ballistic skin and break, missile spin frictional heat and clashing into occurs after the sound absorbs the impact energy of body and the energy-absorbing of soft ballistic layer, bulletproof ability is strengthened.
As the further improvement of flak jackets of the present invention, bulletproof composite layer is provided with two-layer, be respectively the first bulletproof composite layer and the second bulletproof composite layer, first bulletproof composite layer is made up of the first hard ballistic layer and the first soft ballistic layer, second bulletproof composite layer is made up of the second hard ballistic layer and the second soft ballistic layer, first hard ballistic layer is made up of to the hard sheet against ballistic path direction projection several, the second hard ballistic layer by do not have radian hard sheet or be made up of to the hard sheet against ballistic path direction projection several.First bulletproof composite layer and the second bulletproof composite layer can adopt the structure of the soft or hard layer of general flak jackets, after making shaping, insert the second hard ballistic layer between the first soft ballistic layer and the second soft ballistic layer, the first hard ballistic layer is then inserted between the first soft ballistic layer and clothes outermost layer; Bulletproof composite layer can arrange multilayer, but it is suitable with common flak jackets thickness in order to ensure, adopt and two-layer the best is set, can be understood as simply and original one deck hard ballistic layer is divided into two-layer, original soft ballistic layer is divided into two-layer, then the setting that hard soft or hard is soft, although every one deck hard ballistic layer, every one deck soft ballistic layer all only have the half of original hard ballistic layer, soft ballistic layer thick, but the energy-absorbing function of different for soft or hard burster course is dispersed into twice, greatly improves than the bulletproof ability of the bulletproof composite layer of same thickness.A rank nearly is almost all improve after the flak jackets of each more than III ballistic protection level of same thickness nominal mass rank adopts this to arrange.The outwardly impact potential energy clearing up body of hard sheet, for increasing this effect, the second hard ballistic layer of internal layer also can adopt outwardly structure, if consider the convenience of processing, internal layer also can adopt does not have a tabular of radian.
As the further improvement of flak jackets of the present invention, hard sheet is alumina plate, alloy aluminium sheet, boron carbide ceramics plate, carborundum plate, glass epoxy or ceramic clad plate.The multiple material of the hard ballistic layer that hard sheet can adopt flak jackets generally to adopt, the material of preferred elastomeric, good toughness, can also make hard sheet indent when body clashes into the hard ballistic layer of evagination like this, further the energy of buffering body.
As the further improvement of flak jackets of the present invention, be articulated and connected between neighbouring hard sheet.During ballisticimpact, it is very useful that assembly can move freely relative to other assembly, in soft bullet-resistant garment industry, in order to provide certain continuity and prevent assembly disconnected from each other component integration being loaded vest Bao Shiwei assembly, often adopts tailor-tacking technology.The present invention also does such being arranged so that, when body has just contacted outermost layer hard ballistic layer, moving freely between hard sheet occurs on hard ballistic layer, namely at initial stage just a large amount of energy cushioning body of elastomer contact flak jackets, the bulletproof ability of flak jackets is further enhanced.
As the further improvement of flak jackets of the present invention, every a slice hard sheet while be provided with integrated bearing pin and pin cylinder with hard sheet, the another side of hard sheet rides on the horizontal hard sheet of next-door neighbour, transversely exceed bearing pin and the pin cylinder of the horizontal hard sheet of next-door neighbour, bearing pin and pin cylinder are coaxially arranged, and the length that bearing pin exceedes hard sheet longitudinal direction is the degree of depth of pin cylinder; Every a slice hard sheet and its longitudinally the hard sheet arranged of top by bearing pin and pin cylinder hinged, be provided with the torsion spring making hard sheet be closely buckled in the horizontal hard sheet that it is close in pin cylinder.Hard sheet is the square of outwardly convex, its longitudinal direction be provided with pin axle pin cylinder, coaxial pin axle pin cylinder can be regarded as and be all fixed on longitudinal one side; The bearing pin exceeding the length thereof of hard sheet longitudinal direction is inserted in pin cylinder, due to the hard sheet next-door neighbour (namely between adjacent upper and lower hard sheet bearing pin insert sell in cylinder) in all longitudinal directions of the deadweight of hard sheet on longitudinal direction, when a certain piece of hard sheet is subject to ballistic impact with its bearing pin for axle rotates; Hard sheet one longitudinal edge is coaxial pin axle pin cylinder, another longitudinal edge is then because the effect of torsion spring is linked closely and slightly above the hard sheet on side, this ensure that and can to rotate along bearing pin at the moment hard sheet of ballistic impact, realize the effect of buffering ballistic impact potential energy.For realizing the free degree of the rotation of hard sheet better, the soft ballistic layer at its rear adopts tailor-tacking technology.
As the further improvement of flak jackets of the present invention, the surface of hard sheet is provided with near pin axle pin cylinder place the iron plate blocking the horizontal hard sheet of next-door neighbour be fixedly connected on hard sheet, and the length of iron plate is less than the size of hard sheet longitudinal direction.Iron plate is approximately perpendicular to hard sheet, block by the adjacent hard sheet possessed to the rotation of iron plate place of torsion spring effect by the iron plate vertically stretched out, the width of iron plate is as the criterion with the hard sheet on not jack-up side, namely iron plate is in the crossing circular arc of two hard sheets formation, iron plate adopts the iron plate of common material, when ballistic impact, hard sheet is that axle rotates with bearing pin like this, due to the intensity of hard sheet, toughness is all higher than iron plate, iron plate is at the rotation Fracture of hard sheet, also the effect absorbing ballistic impact energy is played partially, the existence of iron plate at ordinary times then prevents the adjacent hard sheet of effect due to torsion spring be separated from and leave gap, the local becoming flak jackets only has soft ballistic layer and without the situation of hard ballistic layer.
As the further improvement of flak jackets of the present invention, iron plate welds or is bonded on hard sheet.Preferably bonding, under ensureing ordinary loading conditions, iron plate constantly, then disconnects disengaging hard sheet when being subject to ballistic impact.
As the further improvement of flak jackets of the present invention, in the middle of hard sheet, accompany the woven wire of transverse and longitudinal braiding.Such setting does not increase hard ballistic layer how much weight, but the shellproof principle taking full advantage of soft ballistic layer (namely absorbs kinetic energy in the draw-texture process of high-strength high-modulus fibre under missile impacts, the power consumption of the fracture of high-strength high-modulus fibre, the bulk deformation of fabric laminate near point of impact, comprise the non-through projection at attack point back and absorb body energy etc.), make hard ballistic layer also use for reference the bulletproof ability of soft ballistic layer, strengthen the bulletproof ability of flak jackets.
As the further improvement of flak jackets of the present invention, the first hard ballistic layer is identical with the thickness of the second hard ballistic layer, is 9.8mm ~ 18mm.Basic is like this thickness of ordinary rigid burster course half, and integral thickness is also suitable with hard ballistic layer (namely outer) thickness of common flak jackets, and bulletproof ability but improves greatly.
As the further improvement of flak jackets of the present invention, the first soft ballistic layer and the second soft ballistic layer adopt needling non-woven felt, and thickness is 15 ~ 20mm.Basic is like this thickness of ordinary soft burster course half, and integral thickness is also suitable with soft ballistic layer (i.e. internal layer) thickness of common flak jackets, and bulletproof ability but improves greatly.
The mode that bulletproof composite layer is set to hard ballistic layer when integral thickness is constant by the present invention, soft ballistic layer multi-layer is arranged continuously, strengthen the absorption to body energy and buffering, bulletproof effect is better; The outwardly impact potential energy clearing up body of hard sheet; Between hard sheet there is moving freely between hard sheet when body has just contacted outermost layer hard ballistic layer in hinged making, and namely at initial stage just a large amount of energy cushioning body of elastomer contact flak jackets, the bulletproof ability of flak jackets is strengthened greatly; Arrange woven wire in hard ballistic layer, used for reference the bullet-proof mechanism of soft ballistic layer, bulletproof ability is stronger.
Accompanying drawing explanation
Fig. 1 is the structural representation of flak jackets of the present invention;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is the schematic diagram of the not hinged state of disassembling of neighbouring two pieces of hard sheets;
Fig. 4 is the hinged view of Fig. 3;
The enlarged diagram of adjacent two pieces of hard sheets about when Fig. 5 is flak jackets normal wear of the present invention;
Fig. 6 is the structural representation of hard sheet.
In figure: 1, the first hard ballistic layer 2, first soft ballistic layer 3, second hard ballistic layer 4, second soft ballistic layer 5, hard sheet 6, bearing pin 7, pin cylinder 8, torsion spring 9, iron plate 10, woven wire.
Detailed description of the invention
Embodiment 1:
By the alloy aluminium sheet of BPV-I type bullet-proof vest, high-strength polyamide silk fabric is made as Fig. 1 to Fig. 6, flak jackets, comprise two-layer bulletproof composite layer, be respectively the first bulletproof composite layer and the second bulletproof composite layer, first bulletproof composite layer is made up of the first hard ballistic layer 1 and the first soft ballistic layer 2, second bulletproof composite layer is made up of the second hard ballistic layer 3 and the second soft ballistic layer 4, first hard ballistic layer 1 is made up of to the hard sheet 5 against ballistic path direction projection several, second hard ballistic layer 3 by do not have radian hard sheet 5 or be made up of to the hard sheet 5 against ballistic path direction projection several.Hard sheet 5 is alloy aluminium sheet.Be articulated and connected between neighbouring hard sheet 5.Every a slice hard sheet 5 while be provided with integrated bearing pin 6 and pin cylinder 7 with hard sheet 5, the another side of hard sheet 5 rides on the horizontal hard sheet 5 of next-door neighbour, transversely exceed bearing pin 6 and the pin cylinder 7 of the horizontal hard sheet 5 of next-door neighbour, bearing pin 6 and pin cylinder 7 are coaxially arranged, and the length that bearing pin 6 exceedes hard sheet 5 longitudinal direction is the degree of depth of pin cylinder 7; Every a slice hard sheet 5 with its longitudinally hard sheet 5 of arranging of top by bearing pin 6 and pin cylinder 7 hinged, be provided with the torsion spring 8 making hard sheet 5 be closely buckled in the horizontal hard sheet 5 that it is close in pin cylinder 7.Cylinder 7 place is sold near bearing pin 6 in the surface of hard sheet 5 and is provided with the iron plate 9 blocking the horizontal hard sheet 5 of next-door neighbour be fixedly connected on hard sheet 5, the length of iron plate 9 is less than the size of hard sheet 5 longitudinal direction.Iron plate 9 welds or is bonded on hard sheet 5.The woven wire 10 of transverse and longitudinal braiding is accompanied in the middle of hard sheet 5.First hard ballistic layer 1 is identical with the thickness of the second hard ballistic layer 3, is 9.8mm.First soft ballistic layer 2 and the second soft ballistic layer 4 adopt needling non-woven felt, thickness is 15mm, overall heavy 3.4kg, ballistic performance test is carried out with reference to GJB4300-2002, original BPV-I type bullet-proof vest can only reach I grade and resist 54 formula 7.62mm pistol cartridges, and the new flak jackets be prepared into according to structure of the present invention then reaches II grade; First soft ballistic layer 2 is the same with the pretective acreage of original BPV-I type bullet-proof vest with the pretective acreage of the second soft ballistic layer 4, is 0.29m
2, two-layer cup depth sum is 19mm.
Embodiment 2:
Different from embodiment 1, the outer tactical vest of " interceptor " flak jackets and KM-2 Kev is adopted to draw liner (or needling non-woven felt) heavy 3.8kg altogether, add the boron carbide ceramics plate that two pieces of every block 1.8kg are heavy, gross weight reaches 7.4Kg, and degree of protection is IV grade (with reference to America NI J standard).Make the structure identical with embodiment 1, as Fig. 1 to Fig. 6, but hard sheet 5 is boron carbide ceramics plate.First hard ballistic layer 1 is identical with the thickness of the second hard ballistic layer 3, is 15mm.First soft ballistic layer 2 and the second soft ballistic layer 4 adopt KM-2 Kev to draw or needling non-woven felt, and thickness is 17mm.With reference to NIJ, the flak jackets made according to the present invention can defend 30 bore armor-piercing bullets (U.S. Military M2AP), and the heavy 10.8g of bullet, minimum bullet speed reaches the threat of 900m/s, and the maximum back side degree of depth is 38mm.
Embodiment 3:
The flak jackets adopting an original reference GA141-2010 police flak jackets standard to reach 4 grades rises to 5 grades after again preparing according to structure of the present invention, can lower than the threat of 56 formula 7.62mm semi-automatic rifles.Be specially the carborundum plate of two pieces of 1.63kg, two-layer needling non-woven felt, each 17mm, flak jackets gross weight 5.15kg.Also bullet can be blocked with reference to after GA141-2010 test, and cup depth is than original 23mm also little 5mm.
Above content is in conjunction with concrete optimal technical scheme further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. flak jackets, is characterized in that, comprises at least two-layer bulletproof composite layer, and described bulletproof composite layer is formed by along the hard ballistic layer of ballistic path direction ecto-entad and soft ballistic layer.
2. flak jackets according to claim 1, it is characterized in that, described bulletproof composite layer is provided with two-layer, be respectively the first bulletproof composite layer and the second bulletproof composite layer, first bulletproof composite layer is made up of the first hard ballistic layer and the first soft ballistic layer, second bulletproof composite layer is made up of the second hard ballistic layer and the second soft ballistic layer, first hard ballistic layer is made up of to the hard sheet against ballistic path direction projection several, the second hard ballistic layer by do not have radian hard sheet or be made up of to the hard sheet against ballistic path direction projection several.
3. flak jackets according to claim 2, is characterized in that, described hard sheet is alumina plate, alloy aluminium sheet, boron carbide ceramics plate, carborundum plate, glass epoxy or ceramic clad plate.
4. the flak jackets according to Claims 2 or 3, is characterized in that, is articulated and connected between neighbouring hard sheet.
5. flak jackets according to claim 4, it is characterized in that, every a slice hard sheet while be provided with integrated bearing pin and pin cylinder with hard sheet, the another side of hard sheet rides on the horizontal hard sheet of next-door neighbour, transversely exceed bearing pin and the pin cylinder of the horizontal hard sheet of next-door neighbour, bearing pin and pin cylinder are coaxially arranged, and the length that bearing pin exceedes hard sheet longitudinal direction is the degree of depth of pin cylinder; Every a slice hard sheet and its longitudinally the hard sheet arranged of top by bearing pin and pin cylinder hinged, be provided with the torsion spring making hard sheet be closely buckled in the horizontal hard sheet that it is close in pin cylinder.
6. flak jackets according to claim 4, it is characterized in that, the surface of described hard sheet is provided with near pin axle pin cylinder place the iron plate blocking the horizontal hard sheet of next-door neighbour be fixedly connected on hard sheet, and the length of iron plate is less than the size of hard sheet longitudinal direction.
7. flak jackets according to claim 6, is characterized in that, described iron plate welds or is bonded on hard sheet.
8. flak jackets according to claim 4, is characterized in that, accompanies the woven wire of transverse and longitudinal braiding in the middle of described hard sheet.
9. flak jackets according to claim 4, is characterized in that, the first hard ballistic layer is identical with the thickness of the second hard ballistic layer, is 9.8mm ~ 18mm.
10. flak jackets according to claim 2, is characterized in that, described first soft ballistic layer and the second soft ballistic layer adopt needling non-woven felt, and thickness is 15 ~ 20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510995575.6A CN105571397B (en) | 2015-12-28 | 2015-12-28 | Flak jackets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510995575.6A CN105571397B (en) | 2015-12-28 | 2015-12-28 | Flak jackets |
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| Publication Number | Publication Date |
|---|---|
| CN105571397A true CN105571397A (en) | 2016-05-11 |
| CN105571397B CN105571397B (en) | 2017-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510995575.6A Active CN105571397B (en) | 2015-12-28 | 2015-12-28 | Flak jackets |
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| Country | Link |
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| CN (1) | CN105571397B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109059653A (en) * | 2018-07-18 | 2018-12-21 | 九江学院 | A kind of material and its hydrodynamics method for making multiple elements design flak jackets |
| CN110017732A (en) * | 2019-04-09 | 2019-07-16 | 栾云鹏 | A kind of high-strength light flak jackets |
| CN116292746A (en) * | 2023-03-31 | 2023-06-23 | 无锡协和精密模切件有限公司 | Impact-resistant composite ceramic fiber board |
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| CN2197651Y (en) * | 1994-04-20 | 1995-05-17 | 长治市公安局刑事科学技术研究所 | Multifunctional bullet-proof suit |
| CN1332839A (en) * | 1998-11-09 | 2002-01-23 | 顶峰盔甲有限公司 | Method and apparatus for defeating high-velocity projectiles |
| CN101819006A (en) * | 2010-04-26 | 2010-09-01 | 刘俊江 | Feather flak jacket |
| CN102435103A (en) * | 2010-09-29 | 2012-05-02 | 宁波荣溢化纤科技有限公司 | Bullet-proof and stab-resistant clothes and preparation method thereof |
| CN104089531A (en) * | 2014-06-27 | 2014-10-08 | 江阴芗菲服饰有限公司 | Bulletproof clothes |
| CA2898570A1 (en) * | 2013-01-16 | 2014-10-09 | Barrday Corp. | High density, high dry-resin content fabric for rigid composite ballistic armor |
| CN104501658A (en) * | 2014-11-27 | 2015-04-08 | 浙江立泰复合材料有限公司 | Complete plate type bulletproof inserting plate |
-
2015
- 2015-12-28 CN CN201510995575.6A patent/CN105571397B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2197651Y (en) * | 1994-04-20 | 1995-05-17 | 长治市公安局刑事科学技术研究所 | Multifunctional bullet-proof suit |
| CN1332839A (en) * | 1998-11-09 | 2002-01-23 | 顶峰盔甲有限公司 | Method and apparatus for defeating high-velocity projectiles |
| CN101819006A (en) * | 2010-04-26 | 2010-09-01 | 刘俊江 | Feather flak jacket |
| CN102435103A (en) * | 2010-09-29 | 2012-05-02 | 宁波荣溢化纤科技有限公司 | Bullet-proof and stab-resistant clothes and preparation method thereof |
| CA2898570A1 (en) * | 2013-01-16 | 2014-10-09 | Barrday Corp. | High density, high dry-resin content fabric for rigid composite ballistic armor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109059653A (en) * | 2018-07-18 | 2018-12-21 | 九江学院 | A kind of material and its hydrodynamics method for making multiple elements design flak jackets |
| CN110017732A (en) * | 2019-04-09 | 2019-07-16 | 栾云鹏 | A kind of high-strength light flak jackets |
| CN116292746A (en) * | 2023-03-31 | 2023-06-23 | 无锡协和精密模切件有限公司 | Impact-resistant composite ceramic fiber board |
| CN116292746B (en) * | 2023-03-31 | 2023-09-19 | 无锡协和精密模切件有限公司 | Impact-resistant composite ceramic fiber board |
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| CN105571397B (en) | 2017-10-13 |
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Effective date of registration: 20190506 Address after: 210001 Daguang Road 142, Qinhuai District, Nanjing City, Jiangsu Province Patentee after: Nanjing Jihua 3521 Special Equipment Co., Ltd. Address before: 214400 Garden Village, Changjing Town, Jiangyin City, Wuxi City, Jiangsu Province Patentee before: JIANGYIN CHANGJING GARDEN WOOL TEXTILE CO., LTD. |