EP1058808A1 - Stab and bullet proof protective clothing - Google Patents
Stab and bullet proof protective clothingInfo
- Publication number
- EP1058808A1 EP1058808A1 EP99902548A EP99902548A EP1058808A1 EP 1058808 A1 EP1058808 A1 EP 1058808A1 EP 99902548 A EP99902548 A EP 99902548A EP 99902548 A EP99902548 A EP 99902548A EP 1058808 A1 EP1058808 A1 EP 1058808A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layers
- protective clothing
- coated
- materials
- hard
- 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.)
- Granted
Links
- 230000001681 protective effect Effects 0.000 title claims abstract description 75
- 239000000463 material Substances 0.000 claims abstract description 148
- 239000004744 fabric Substances 0.000 claims abstract description 95
- 239000004760 aramid Substances 0.000 claims abstract description 31
- 229920003235 aromatic polyamide Polymers 0.000 claims abstract description 23
- 206010041899 Stab wound Diseases 0.000 claims abstract description 9
- 239000010410 layer Substances 0.000 claims description 137
- 239000000835 fiber Substances 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 13
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 229910052593 corundum Inorganic materials 0.000 claims description 9
- 239000010431 corundum Substances 0.000 claims description 9
- 239000011241 protective layer Substances 0.000 claims description 8
- 229920005989 resin Polymers 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 8
- 229920001568 phenolic resin Polymers 0.000 claims description 5
- 239000005011 phenolic resin Substances 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 5
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 5
- 208000023329 Gun shot wound Diseases 0.000 claims description 4
- 229920000058 polyacrylate Polymers 0.000 claims description 4
- 229910052580 B4C Inorganic materials 0.000 claims description 3
- 229920001807 Urea-formaldehyde Polymers 0.000 claims description 3
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000004816 latex Substances 0.000 claims description 3
- 229920000126 latex Polymers 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- -1 polyethylene Polymers 0.000 claims description 3
- QIJNJJZPYXGIQM-UHFFFAOYSA-N 1lambda4,2lambda4-dimolybdacyclopropa-1,2,3-triene Chemical compound [Mo]=C=[Mo] QIJNJJZPYXGIQM-UHFFFAOYSA-N 0.000 claims description 2
- 229910052582 BN Inorganic materials 0.000 claims description 2
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 2
- 229910039444 MoC Inorganic materials 0.000 claims description 2
- 239000004698 Polyethylene Substances 0.000 claims description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 claims description 2
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 2
- 229910052726 zirconium Inorganic materials 0.000 claims description 2
- 238000001891 gel spinning Methods 0.000 claims 1
- 239000002861 polymer material Substances 0.000 claims 1
- 229920000098 polyolefin Polymers 0.000 claims 1
- 208000027418 Wounds and injury Diseases 0.000 abstract description 16
- 239000003082 abrasive agent Substances 0.000 abstract description 10
- 206010052428 Wound Diseases 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 description 23
- 239000002245 particle Substances 0.000 description 21
- 241000531908 Aramides Species 0.000 description 17
- 239000011230 binding agent Substances 0.000 description 17
- 239000010408 film Substances 0.000 description 15
- 230000006378 damage Effects 0.000 description 13
- 208000014674 injury Diseases 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 13
- 229920006231 aramid fiber Polymers 0.000 description 12
- 230000000694 effects Effects 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 10
- 238000001035 drying Methods 0.000 description 9
- 230000005686 electrostatic field Effects 0.000 description 8
- 230000035515 penetration Effects 0.000 description 8
- 239000004753 textile Substances 0.000 description 8
- 238000011282 treatment Methods 0.000 description 8
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 6
- 239000000945 filler Substances 0.000 description 6
- 239000011888 foil Substances 0.000 description 6
- 238000005406 washing Methods 0.000 description 6
- 239000012876 carrier material Substances 0.000 description 5
- 239000006185 dispersion Substances 0.000 description 5
- 229920000742 Cotton Polymers 0.000 description 4
- 238000003892 spreading Methods 0.000 description 4
- 230000007480 spreading Effects 0.000 description 4
- 239000004952 Polyamide Substances 0.000 description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000004745 nonwoven fabric Substances 0.000 description 3
- 229920002647 polyamide Polymers 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- XKZGIJICHCVXFV-UHFFFAOYSA-N 2-ethylhexyl diphenyl phosphite Chemical compound C=1C=CC=CC=1OP(OCC(CC)CCCC)OC1=CC=CC=C1 XKZGIJICHCVXFV-UHFFFAOYSA-N 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 159000000032 aromatic acids Chemical class 0.000 description 2
- 150000004982 aromatic amines Chemical class 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000009941 weaving Methods 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- WRDNCFQZLUCIRH-UHFFFAOYSA-N 4-(7-azabicyclo[2.2.1]hepta-1,3,5-triene-7-carbonyl)benzamide Chemical compound C1=CC(C(=O)N)=CC=C1C(=O)N1C2=CC=C1C=C2 WRDNCFQZLUCIRH-UHFFFAOYSA-N 0.000 description 1
- 239000004953 Aliphatic polyamide Substances 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 241000845082 Panama Species 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004433 Thermoplastic polyurethane Substances 0.000 description 1
- 229920000561 Twaron Polymers 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000002730 additional effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002313 adhesive film Substances 0.000 description 1
- 150000001334 alicyclic compounds Chemical class 0.000 description 1
- 150000007824 aliphatic compounds Chemical class 0.000 description 1
- 229920003231 aliphatic polyamide Polymers 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000007380 fibre production Methods 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 150000002391 heterocyclic compounds Chemical class 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920002577 polybenzoxazole Polymers 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
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- 239000000344 soap Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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- 238000009988 textile finishing Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
- 239000004762 twaron Substances 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
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
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/02—Soles; Sole-and-heel integral units characterised by the material
- A43B13/10—Metal
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
- A41D31/04—Materials specially adapted for outerwear characterised by special function or use
- A41D31/24—Resistant to mechanical stress, e.g. pierce-proof
- A41D31/245—Resistant to mechanical stress, e.g. pierce-proof using layered materials
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/02—Soles; Sole-and-heel integral units characterised by the material
- A43B13/12—Soles with several layers of different materials
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B17/00—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined
- A43B17/04—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined with metal insertions or coverings
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B7/00—Footwear with health or hygienic arrangements
- A43B7/32—Footwear with health or hygienic arrangements with shock-absorbing means
-
- 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
- F41H5/00—Armour; Armour plates
- F41H5/02—Plate construction
- F41H5/04—Plate construction composed of more than one layer
- F41H5/0414—Layered armour containing ceramic material
- F41H5/0428—Ceramic layers in combination with additional layers made of fibres, fabrics or plastics
- F41H5/0435—Ceramic layers in combination with additional layers made of fibres, fabrics or plastics the additional layers being only fibre- or fabric-reinforced layers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/911—Penetration resistant layer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
- Y10T428/24471—Crackled, crazed or slit
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
- Y10T442/2615—Coating or impregnation is resistant to penetration by solid implements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
- Y10T442/2615—Coating or impregnation is resistant to penetration by solid implements
- Y10T442/2623—Ballistic resistant
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
- Y10T442/2861—Coated or impregnated synthetic organic fiber fabric
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
- Y10T442/2861—Coated or impregnated synthetic organic fiber fabric
- Y10T442/2893—Coated or impregnated polyamide fiber fabric
- Y10T442/2902—Aromatic polyamide fiber fabric
Definitions
- the invention relates to protective clothing, in particular clothing for protection against stab and shot injuries, consisting of several layers of flat structures made of high-strength materials.
- GB-A 2 283 902 describes stab protection clothing, which is made up of aramid fabrics and has metal plates attached to its surface. Such clothing has a very low wearing comfort, since it does not guarantee the necessary flexibility and, moreover, a high weight has to be accepted.
- Protective clothing in a similar design is described in WO-A 91 - 06 821.
- DE-C 4 407 180 proposes the use of a metal insert which is embedded in a polyurethane matrix for stab protection clothing.
- This metal insert is designed in the form of a net-like structure made of steel chains.
- the disadvantage of this type of stab protection clothing is that it only offers good protection against blade-stabbing devices such as knives, daggers, etc., but not against very pointed, needle-like stabbing devices.
- US-A 4 933 231 describes a foam-laminated, dense fabric made of high-strength aliphatic polyamide fibers, which appears particularly suitable for cut protection clothing. With this embodiment, stab protection that meets the requirements of the security forces cannot be achieved.
- Stab protection clothing consisting of overlapping plates made of glass fiber reinforced plastic, which are arranged on a textile carrier, is described by WO 92-08 094. Because of a lack of flexibility, such protective clothing does not offer the desired wearing comfort.
- US-A 5 562 264 suggests the use of extremely dense fabrics made of relatively fine yarns. With these, protection against stab and bullet wounds should be achieved in the same way. This solution to the problem cannot be satisfied, since very high costs have to be incurred for the production of the fabrics and the weaving in a very dense setting can lead to fiber damage, as a result of which the holding effect for projectiles suffers in particular. In addition, the stab protection in this embodiment is not sufficient for the specifications of all countries.
- DE-A 4 413 969 proposes stab protection clothing consisting of several layers of metal foils. Combination with laminates made of aramid fiber fabrics also provides bullet protection. In addition to the high price for metal foils, this protective clothing is also unsatisfactory because of the lack of flexibility. The rustling is also caused through the metal foils, felt uncomfortable when worn. A similar design of stab protection clothing can be found in EP-A 640 807, in which flat structures made from narrow strips of metal foils are proposed.
- EP-A 597 165 describes a package made of fabrics, for example made of Araraid fibers, with the aid of a thermoplastic matrix resin. These relatively rigid structures do not offer the desired comfort.
- WO 97 - 21 334 proposes aramid fabrics coated with thermoplastic resins for combined puncture and bulletproof clothing. This embodiment does not provide stab protection clothing that meets the conditions required by security forces in acceptable weight ranges in all countries.
- DE-U 94 08 834 proposes a package of stacked, alternating layers of textile fabrics made of aramid fibers and metal mesh for the combined puncture and bullet protection.
- the disadvantage of this embodiment is the low protection against needle-like pricking devices.
- WO 96 - 03 277 describes protective clothing which contains at least one layer of a flat structure to which a ceramic layer is applied by means of a plasma spray coating.
- this type of protective clothing provides good protection against puncture and bullet wounds, the manufacture is complicated because of the plasma spray coating to be used here and also unfavorable in terms of cost.
- the ceramic layer when the ceramic layer is applied, the ceramic particles can partially sinter into one another as a result of the high temperatures in the plasma, so that the protective action against puncturing devices may suffer somewhat.
- abrasive materials have also already been proposed for protective clothing.
- the protective effect against projectiles should be increased if the outer layer of an antiballistic package of abrasive materials such as aluminum oxide, boron carbide and others. contains.
- a layer of such a material does not have a positive effect in protecting against projectiles.
- the stab protection properties can be improved with the proposed embodiment is not apparent from the document mentioned.
- it contains no information about the amount of abrasive material and the procedure for producing such a protective layer.
- abrasive material is applied to aramid yarns that are to be fibrillated later in a very thin layer. This is primarily intended to protect against stab wounds caused by surgical instruments.
- the very thin layer disclosed in this document does not provide any protection against injury from knives.
- Another task was to design the materials for stab protection so that they can also be used for combined stab and bullet protection clothing.
- the protective clothing composed of several layers contains more than one layer coated with a hard material layer, the hard materials in phenolic resins, urea resins, latex in crosslinked and uncrosslinked form , Epoxy resins or polyacrylate resins are included.
- Protective clothing against stab and bullet wounds is usually made up of several layers. Garments with different numbers of layers are used. The choice of the number of layers depends on various factors such as the required protective effect, the desired level of comfort, the cost of clothing, etc. The general rule is that the number of layers must be as low as possible, but as high as is necessary from the point of view of protection needs.
- the unpublished WO 98/45 662 discloses a puncture-resistant material which consists of a carrier coated with solid particles, which is arranged on a package of fabrics.
- the coating consists of abrasive particles with a diameter of 0.1 to 3 mm, and the package of sheets is thicker than 1.5 mm.
- the use of several coated carriers can also be provided.
- the solid particles are applied to the carrier with a bituminous or polyurethane-containing adhesive.
- the protective layers of stab and bulletproof clothing are usually made up of fabrics made of high-strength materials. These fabrics are preferably textile fabrics, particularly preferably fabrics. In addition to fabrics, other textile fabrics such as knitted fabrics, nonwovens, laid scrims, etc. can also be used.
- Films or thin layers of foam are particularly used as non-textile fabrics.
- High-strength materials are materials that have high strength and offer good protection against the effects of projectiles and stabbing devices. These are primarily polymers that can be processed into fibers.
- Aramid fibers gel fibers spun polyethylene fibers, polyimide fibers, polybenzoxazole fibers, fully aromatic polyester fibers, high-strength polyamide fibers, high-strength polyester fibers and fibers with similar properties are preferably used for the production of the protective layers of the protective clothing according to the invention. Aramid fibers are particularly preferred.
- Aramid fibers which are often also referred to as aromatic polyamide fibers, are widely used in protective clothing. These are fiber materials made from polyamide those which are essentially produced by polycondensation of aromatic acids or their chlorides with aromatic amines. Aramide fibers consisting of poly-p-phenylene terephthalamide are particularly known. Such fibers are commercially available, for example, under the brand name Twaron.
- Aramid fibers are not only fibers that are made up entirely of aromatic acid or amine components, but also fiber materials whose polymer is more than 50% made from aromatic acids and aromatic amines and that also contains aliphatic, alicyclic or heterocyclic compounds in the acid and / or amine component.
- the aramid fibers to be used preferably in the form of filament yarns or spun yarns can be used. Filament yarns are preferred. Spun fiber yarns are also to be understood as yarns which have been produced by the tear conversion process.
- the titer of the yarns to be used are between 200 and 3 400 dtex, titer between 400 and 1 500 dtex are preferred.
- the filament titer is usually below 5 dtex, preferably below 1.5 dtex.
- the fabrics are preferably made in plain weave, but other weaves, such as a Panama or twill weave, can also be selected for fabric production.
- the number of threads depends on the yarn titer used and on the desired weight per unit area of the fabrics to be used for the protective layers.
- the basis weights of these fabrics are said to be between 50 and 500 g / m 2 , preferably between 100 and 300 g / m 2 .
- a fabric to be used advantageously for the protective clothing according to the invention is produced, for example, in plain weave from a yarn with a titer of 930 dtex.
- the thread counts are 10.5 / cm in warp and weft. With such an adjustment, a fabric with a basis weight of approx. 200 g / m 2 is obtained.
- the information given here is to be understood as an example and not as restrictive.
- man-made fibers usually contain a preparation that, among other things, also has a positive influence on the running properties of the yarn during fabric production.
- a washing treatment for example coating to prepare the application of a hard material layer
- the washing conditions such as temperature, treatment time and additions to the washing bath are known to the person skilled in the art.
- the washing conditions are chosen so that the residual preparation content after this treatment is less than 0.1%.
- the fabric is then dried, which is usually carried out on a stenter.
- Fabrics which are provided for forming the actual bullet protection layers in the protective clothing according to the invention and which are not provided with a hard material coating can be used in this form.
- the wash treatment is followed by hydrophobization, for example using a polymeric or polymerizable fluorocarbon compound.
- Washed fabrics are preferably used for the hard material coating, but there is also the option of using so-called raw, i.e. unwashed fabrics.
- a primer is applied to the fabric as a preliminary stage for hard material coating. This is necessary in order to prevent penetration of the binder layer to be applied subsequently for the absorption of the hard materials into the carrier fabric.
- the coating composition for the primer also contains fillers in a proportion of 30-70%. Calcium carbonate can be used as a filler, for example.
- the primer is applied in an amount of 40-100 g / m 2. After the liquid contained in the coating slip has evaporated, about 30-75 g / m 2 are still present on the fabric as a primer.
- Intermediate drying usually takes place after the application of the primer, for example at a temperature of 100.degree.
- it is also possible to work wet on wet that is, to apply the subsequent main coat to the precoat without intermediate drying.
- the compound classes are suitable, as they are specifically mentioned above for the primer.
- Phenolic resins are preferably used for the main coat.
- the product for the primer must form a closed film that is as elastic as possible in order to prevent the later main coat from migrating into the base material.
- the essential property of the product that forms the main line is the optimal integration of hard materials.
- the main coat also contains a proportion of filler, which can amount to 20 - 50% of the total amount of binder.
- the wet quantity for the main coat is between 90 and 150 g / m 2 . After drying, the amount of main coat binder is 60-120 g / m 2 .
- Hard materials are to be understood as inorganic substances with a high degree of hardness, such as are also used, for example, in the abrasive layer of abrasives.
- Examples include silicon carbide, corundum (aluminum oxide), tungsten carbide, titanium carbide, molybdenum carbide, zirconium corundum (fused corundum with 40% zirconium oxide), boron carbide or boron nitride.
- This list of hard materials which does not claim to be complete, is to be understood as examples and not as restrictive. Silicon carbide and / or corundum are preferably used for the formation of the hard material layer.
- the substances mentioned are preferably used alone, but it is also possible to work with mixtures of different hard materials.
- the hard materials can be used in various forms. So-called blocky and pointed shapes are preferred.
- the former are preferably round particle shapes. These have the advantage that a high bulk density can be achieved with them.
- the shape of the hard material particles is only of certain importance for larger particle diameters. 12
- the larger particle diameters make the differences in the particle shape hardly noticeable.
- the hard materials are applied to a base provided with a binder layer using one of the methods customary when applying abrasives.
- these methods are preferably a sprinkling of the hard material or its application in the electrostatic field.
- the hard materials fall from the spreading gap of a spreading funnel from above onto the fabric web provided with the preliminary and main line.
- the spreading density is controlled on the one hand by the width of the spreading gap and on the other hand by the speed of the substrate.
- the electrostatic method uses an electrostatic field.
- the hard material particles align themselves along the field lines of the electrostatic field and migrate along these field lines to the opposite pole.
- This possibility of the movement of hard material particles in the electrostatic field is used in abrasive technology in such a way that the underlay provided with a primer and main line is moved along the upper electrode through the electrostatic field.
- the coated side of the base faces the counter electrode.
- the hard material particles, which are located on the lower electrode migrate from bottom to top in the electrostatic field and are anchored there in the binder film of the base.
- the hard material particles are introduced into the electrostatic field with the aid of an endless conveyor belt which moves along the lower electrode and onto which the hard materials have been scattered outside the electrostatic field by means of a scattering funnel. 13
- the electrodes are preferably plate electrodes, but linear and pointed electrodes can also be used.
- the hard material layer is the slurry, which is also known in the production of abrasives.
- the hard materials are stirred into the binder and poured or spread onto the base.
- the flat structures coated with hard materials for the protective clothing according to the invention are preferably produced using gravity scattering, since a high density of the hard material particles can be achieved with this method.
- the binder film hardens at a temperature of approx. 130 ° C.
- the thickness of the binder film decreases somewhat, so that the hard material particles appear more strongly on the surface of the coated side.
- This reduction in the thickness of the binder film is also used in the slurry process, since the evaporation of liquid and the reduction in the film thickness make it possible for the hard materials stirred into a binder to reach the surface after drying.
- a roller application can be used, which can be done for example by spraying a dispersion of an elastomer.
- a roller application a roller runs through a storage trough in which the dispersion to be applied is located. After leaving the trough, the excess of the entrained dispersion is removed from the roller, for example with the aid of a doctor knife, so that a thin film is formed on the application roller and is transferred to the hard material layer.
- the sealing layer is cured in a similar manner to the binder layer, preferably by a drying treatment.
- the last step is a flex process.
- Flexing is a defined breaking of the rigid covering layer mechanically, which creates small islands of the binder layer including the hard materials anchored in this layer on the carrier material.
- the flexibility of the hard material-coated carrier material created during flexing is probably due to the fine crack structures formed in the adhesive film.
- the conditions for flexing and the machines required for this are generally known in the abrasives industry.
- Cross-flexing is preferred in the production of the flat materials coated with hard materials, that is to say that a flex treatment is carried out both in the longitudinal direction and in the transverse direction of the flat structure.
- the flexing achieves a good elasticity of the fabrics coated with hard materials for use in the protective clothing according to the invention, which has a very favorable effect on the wearing comfort of this clothing.
- the flat structures produced in the manner described and coated with hard materials have thicknesses between 0.1 and 1.5 mm, preferably between 0.2 and 0.8 mm.
- the thickness of the hard material layer is determined using the method known in the textile industry for measuring the fabric thickness. First, the thickness of the non-coated fabric and then the thickness of the fabric coated with hard materials is determined. The measurement is carried out in accordance with DIN 53 353. The thickness of the hard material layer results from the difference in thickness.
- the flat structures produced in the manner described and coated with hard materials are used for protective clothing against puncture injuries and for protective clothing which offers combined protection against puncture and bullet injuries.
- fabrics that are coated on one side only with hard materials are preferably used.
- Protective clothing which is only intended to provide protection against puncture injuries is produced from more than one layer, preferably 2-20 layers, particularly preferably 6-15 layers, of the fabric coated with hard materials.
- the layers are placed on top of one another and cut in a suitable manner for the clothing.
- the individual layers are consolidated with one another, for example, by two cross-shaped seams of approx. 10 cm each in the middle of the blank. Another possibility of consolidating the layers is to glue them in a punctiform manner.
- the layers slip much less than in the case of non-coated sheet materials.
- the hard material layer particularly in neighboring layers that are also coated with hard materials, but also in uncoated neighboring layers, results in anchoring in the form of a type of Velcro effect, so that slipping is largely prevented.
- textile fabrics such as fabrics or knits are used as the base material for coating with hard materials.
- the hard materials of the neighboring layer can penetrate into them and anchor themselves there. With foils with a largely closed surface, this is not possible or only to a lesser extent.
- the fabrics which are combined into a package of 2 - 20 layers and cut to fit the clothing, are coated with hard materials and placed in a sleeve made of PVC or thermoplastic polyurethane film and welded into it.
- a fabric coated with a weldable polyurethane layer for example made of polyamide fibers, can also be used, the coated side forming the inside.
- the package formed in this way is then introduced into a casing made of a cotton fabric or a fabric made of polyester-cotton blended yarns.
- Mixed yarns made of viscose fibers and m-aramid fibers can also be used for this.
- This fabric is dyed or printed on the side visible when worn. It is particularly important to ensure that the actual protective package, consisting of flat materials coated with hard materials, can be easily removed, in order to enable uncomplicated cleaning, particularly of the casing. 17
- a padding layer can be attached under the actual protective layers, on the side adjacent to the body.
- this upholstery layer preference is given to textile fabrics, particularly preferably needle felts or nonwovens made from high-strength fibers.
- Aramid fibers are particularly suitable for this. In addition to the cushioning effect mentioned, they also provide additional stab protection.
- the flat structures coated with hard materials are preferably arranged in the protective clothing in such a way that the hard material layer is on the side facing away from the carrier. In this way, the best puncture protection effect is achieved when using flat materials coated on one side. However, it is also possible to arrange the coated side inwards, ie facing the carrier, or to select a mutual arrangement of the layer coated with hard materials in the stab protection package.
- Clothing that is intended to offer a combined puncture and bullet protection is constructed from more than one layer, preferably from 2 to 20 layers, particularly preferably from 6 to 15 layers of fabrics that are coated with hard materials and 6 to 50 layers of non-coated fabrics .
- coated fabrics in protective clothing for combined stab and bullet protection is preferably 8-40, particularly preferably 16-35.
- Fabrics made of aramid fibers are used in particular as non-coated fabrics.
- the non-coated aramid fabrics, which form the actual ball protection package, are arranged on the side facing the body. These fabrics are produced in the same manner as described above for the aramid fabrics as base materials for the hard material coating.
- the protection package for the combined stab and bullet protection can be designed so that the actual stab protection layers, these are the layers coated with hard materials, are connected to the non-coated aramid fabrics.
- the actual stab protection layers these are the layers coated with hard materials
- the non-coated aramid fabrics For this purpose, for example, blanks from 6 to 50 layers of uncoated aramid fabrics are placed one above the other. 2 - 20 layers of flat materials coated on one side with hard materials are placed over these so that the coated side forms the upper side.
- the individual layers of the package formed in this way are consolidated, for example in the manner described above, with a double seam arranged crosswise or with point-by-point bonding.
- the package is then, as described above, welded into a film sleeve and then inserted into a fabric sleeve, for example made of a polyester-cotton blend yarn.
- This introduction takes place in such a way that the flat structures coated with hard materials are on the side facing away from the carrier and that a puncturing device or a projectile first hits the layers coated with hard materials.
- the arrangement of the layers coated with hard materials should not be restricted to an embodiment in which the hard material layer faces away from the carrier. The reverse and alternate arrangement are also possible, but the arrangement of the hard material layer pointing outwards is preferred.
- a particularly preferred embodiment of the combined stab and bullet protection clothing offers a variant which can be used either for protection against one of these types of threat, that is for protection against stab injuries or for protection against bullet injuries. And it can also be used to protect against both types of threats at the same time.
- the actual ball protection package is first formed from 6 to 50 layers of an aramide fabric not coated with hard materials by laying suitable blanks on top of one another and solidifying them in the manner described. This package is sealed in a foil.
- a package of 2 to 20 layers of a sheet material coated with hard materials is formed, which is also welded into a film.
- a cover is formed from, for example, a dyed or printed polyester-cotton fabric.
- This fabric cover is provided with a Velcro or zipper to enable easy insertion or removal of one of the two packages or both packages.
- stab protection package for example, brought together in a cover, which then forms the outer layer of a protective vest.
- the arrangement of the actual stab protection package is preferably carried out in such a way that it is on the side facing away from the carrier, that is to say exposed first to the attack.
- the actual stab protection package can be removed from flat materials coated with hard materials and the protective clothing can be used alone with a package of aramid fabrics that are not provided with a hard material layer.
- the procedure is analogous if only a threat from stab injuries is to be expected.
- the ball protection package formed from uncoated aramid fabrics is removed from the clothing and the protection package is thus formed solely from flat materials coated with hard materials.
- This cushion layer which is designed in the manner described above, is also in this case in a shell, for example made of a film, so that simple insertion or removal of the cushion layer is ensured.
- the protective effect shows a dependence on the average grain diameter of the hard material particles.
- a diameter range of 10 to 500 ⁇ m has proven to be suitable.
- a range of 20-200 ⁇ m is preferred, and a range of 25-150 ⁇ m is particularly preferred.
- a grain size of P 220 according to FEPA corresponds, for example in the case of high-grade corundum or silicon carbide, to an average grain diameter of 66 ⁇ m.
- the grain diameters are subject to scatter.
- scattering which is normally subject to a normal distribution, between about 40 and 90 ⁇ m can be expected.
- the stab protection properties were tested in accordance with the guidelines issued by the Research and Development Center for Police Technology, Weg.
- a stitch is carried out with a stiletto with a sharpened blade that is ground on both sides and has a mass of 2.6 kg.
- the test blade must act on the test material with an energy of 35 J (this corresponds to a fall height of 1.35 m).
- a homogeneous film of lithium soap grease is applied to the test blade.
- a plasticine block is placed behind the test material as background material.
- the penetration into this block or the resulting bulge are the assessment parameters for the stab protection properties.
- stab protection material that has a penetration depth of less than 20 mm or a bulge of less than 40 mm is considered suitable for equipping security personnel.
- the drop height and drop weight were varied, which results in different stitch energies.
- the test is also carried out here by assessing the puncture.
- the drop heights and drop weights used in the tests correspond to the following stab energies:
- test material is bombarded from a distance of 10 m, whereby the projectile speed must be determined in each case.
- a plastillin block is attached behind the actual test material. The so-called trauma effect is assessed with the help of the depth of penetration into the plastillin.
- the protective clothing according to the invention offers the due to its relatively low weight, its relatively small thickness and its flexibility 24
- aramid fabrics were coated with a hard material layer.
- the fabric was made from aramid filament yarns with a titer of 930 dtex. The same type of yarn was used for warp and weft. The thread count was 10.5 threads / cm in each case. In this way, a fabric with a basis weight of 198 g / m 2 was obtained.
- This fabric was washed and, after intermediate drying, coated with a primer made from modified polyacrylate. 45% calcium carbonate was incorporated as a filler into the dispersion of the modified polyacylate resin.
- the amount of primer was chosen so that the amount applied was 70 g / m 2 wet. After drying, there was an overlay of 53 g / m 2 on the fabric. Drying was carried out at 100 ° C.
- the actual binder coat was then applied, for which a filler-containing dispersion of a phenolic resin precursor was used.
- the amount of resin was 70%, the amount of filler (calcium carbonate) 30%.
- the amount of binder layer was chosen so that the amount of binder wet 121 g / m 2 (dry mass 90 g / m 2 ).
- the tissue prepared in this way was fed into a Bestreuzone, where silicon carbide particles with an average grain diameter of 25th
- the drop weight was reduced to 2 403 g.
- 10 layers of the fabric coated with hard materials in the manner described were combined to form a package, 28 layers of an uncoated fabric were placed underneath, and subjected to a stitch test.
- No puncture was found at a fall height of 10 cm (puncture energy 2.3 J), and an increase in the fall height up to 90 cm (puncture energy 21.2 J) did not lead to a puncture.
- a protective package was formed from 10 layers of an aramid fabric coated with hard materials in the manner described. This was placed in front of a package of 24 layers of an uncoated aramid fabric with a basis weight of approx. 27
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- Engineering & Computer Science (AREA)
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- Materials Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Professional, Industrial, Or Sporting Protective Garments (AREA)
- Laminated Bodies (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
- Details Of Garments (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Materials For Medical Uses (AREA)
- Radiation-Therapy Devices (AREA)
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Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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DE19802242 | 1998-01-22 | ||
DE19802242A DE19802242C2 (en) | 1998-01-22 | 1998-01-22 | Stab and bullet protection clothing |
PCT/EP1999/000258 WO1999037969A1 (en) | 1998-01-22 | 1999-01-18 | Stab and bullet proof protective clothing |
Publications (2)
Publication Number | Publication Date |
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EP1058808A1 true EP1058808A1 (en) | 2000-12-13 |
EP1058808B1 EP1058808B1 (en) | 2002-12-11 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99902548A Expired - Lifetime EP1058808B1 (en) | 1998-01-22 | 1999-01-18 | Stab and bullet proof protective clothing |
Country Status (27)
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US (1) | US6656570B1 (en) |
EP (1) | EP1058808B1 (en) |
JP (1) | JP4176959B2 (en) |
KR (1) | KR100585033B1 (en) |
CN (1) | CN1093629C (en) |
AT (1) | ATE229636T1 (en) |
AU (1) | AU743770B2 (en) |
BR (1) | BR9907152A (en) |
CA (1) | CA2319165C (en) |
CO (1) | CO4780058A1 (en) |
CZ (1) | CZ292963B6 (en) |
DE (2) | DE19802242C2 (en) |
DK (1) | DK1058808T3 (en) |
EE (1) | EE04601B1 (en) |
ES (1) | ES2184409T3 (en) |
HR (1) | HRP20000455B1 (en) |
HU (1) | HU227648B1 (en) |
ID (1) | ID26013A (en) |
IL (1) | IL137163A (en) |
NO (1) | NO318076B1 (en) |
PL (1) | PL188950B1 (en) |
RU (1) | RU2206858C2 (en) |
SK (1) | SK284907B6 (en) |
TR (1) | TR200002116T2 (en) |
WO (1) | WO1999037969A1 (en) |
YU (1) | YU49214B (en) |
ZA (1) | ZA99408B (en) |
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DE202014103530U1 (en) | 2014-07-11 | 2015-07-16 | BLüCHER GMBH | Protective clothing unit with preferably textile splinter protection equipment |
DE102014110791A1 (en) | 2014-07-11 | 2016-01-14 | BLüCHER GMBH | Protective clothing unit with preferably textile splinter protection equipment |
DE202017100965U1 (en) | 2016-12-23 | 2018-01-02 | BLüCHER GMBH | Protective clothing unit |
WO2018114069A1 (en) | 2016-12-23 | 2018-06-28 | BLüCHER GMBH | Protective clothing unit and use thereof |
DE102017103584A1 (en) | 2016-12-23 | 2018-06-28 | BLüCHER GMBH | Protective clothing unit and its use |
DE102017103584B4 (en) * | 2016-12-23 | 2020-03-12 | BLüCHER GMBH | Protective clothing unit with splinter and fragment protection as a ballistic protective function and its use |
WO2021043447A1 (en) | 2019-09-03 | 2021-03-11 | BLüCHER GMBH | Textile surface material having splinter, stab and/or cutting protection |
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