GB2148185A - A multilayer protective element - Google Patents
A multilayer protective element Download PDFInfo
- Publication number
- GB2148185A GB2148185A GB08424557A GB8424557A GB2148185A GB 2148185 A GB2148185 A GB 2148185A GB 08424557 A GB08424557 A GB 08424557A GB 8424557 A GB8424557 A GB 8424557A GB 2148185 A GB2148185 A GB 2148185A
- Authority
- GB
- United Kingdom
- Prior art keywords
- intermediate layer
- protective element
- shell
- textile
- element according
- 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 21
- 239000004753 textile Substances 0.000 claims abstract description 36
- 239000004033 plastic Substances 0.000 claims abstract description 26
- 229920003023 plastic Polymers 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 22
- 206010041662 Splinter Diseases 0.000 claims abstract description 7
- 230000002093 peripheral effect Effects 0.000 claims abstract description 6
- 239000011343 solid material Substances 0.000 claims description 4
- 239000010410 layer Substances 0.000 description 39
- 230000015572 biosynthetic process Effects 0.000 description 11
- 238000005755 formation reaction Methods 0.000 description 11
- 239000004744 fabric Substances 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- 239000004760 aramid Substances 0.000 description 3
- 229920003235 aromatic polyamide Polymers 0.000 description 3
- 239000004417 polycarbonate Substances 0.000 description 3
- 229920000515 polycarbonate Polymers 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 2
- 229920006231 aramid fiber Polymers 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000006261 foam material Substances 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920001887 crystalline plastic Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Classifications
-
- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
-
- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/06—Impact-absorbing shells, e.g. of crash helmets
- A42B3/062—Impact-absorbing shells, e.g. of crash helmets with reinforcing means
- A42B3/063—Impact-absorbing shells, e.g. of crash helmets with reinforcing means using layered structures
-
- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/10—Linings
-
- 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
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
-
- 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
- F41H1/04—Protection helmets
- F41H1/08—Protection helmets of plastics; Plastic head-shields
-
- 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
- F41H5/0471—Layered armour containing fibre- or fabric-reinforced layers
- F41H5/0478—Fibre- or fabric-reinforced layers in combination with plastics layers
-
- 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
- B32B2437/04—Caps, helmets
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Helmets And Other Head Coverings (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
- Professional, Industrial, Or Sporting Protective Garments (AREA)
Abstract
A multilayer, projectile and/or splinter resistant, self rigid protective element, preferably for the protection of the human body or parts thereof, in particular a helmet, comprising an inner shell (3) of plastics material, a textile intermediate layer (2) and an outer shell (1) of plastics material, the outer shell (1) and the inner shell (3) being connected with each other at their peripheral edges, and the textile intermediate layer (2) in its edge portion being firmly connected to the inner shell (3). <IMAGE>
Description
SPECIFICATION
A multilayer protective element
The invention relates to a multilayer, projectile and/or splinter resistant, self-rigid protective element, preferably for the protection of the human body or parts thereof, comprising at least an inner shell of solid material, preferably plastics material, an at least partly textile intermediate layer and an outer shell of solid material, preferably plastics material, the outer and the inner shells being connected with each other at the peripheral edge.
Such protective elements, for example helmets, in which the layers of the textile intermediate layer are not impregnated with synthetic resin but arranged in dry condition between the plastics shells, are known.
The use of several layers of an aramid fiber fabric for the textile intermediate layer has been suggested.
The degree of projectile- and splinter resistance depends substantially on the number of layers of the textile intermediate layer. The number of layers of the textile intermediate layer cannot be increased to any desired extent for reasons of cost, on the one hand, and for reasons of weight, on the other hand. It has further been found that, even when a relatively great number of aramid fibertextile layers were provided, perforations or excessive dents in the inner shell were occasionally caused by the trial shot.
It is therefore the object of the invention to increase the projectile- or splinter resistance of a protective element, in particular of a helmet of the afore-mentioned kind.
According to the invention this is achieved in that the textile intermediate layer is at least in the edge region at least in some points firmly connected with only one of the two shells, preferably the inner shell.
The projectile- and/or splinter resistant effect of certain textile plane formations, such as aramid fiber fabrics, is on the one hand, due to the high stability or the high loading capacity of the fibers, but on the other hand also due to a certain movability of the fibers or the regions of the textile plane formations which have been hit. The movability must not, however, exceed a certain extent as excessively deep pockets would form in the areas which have been hit, which pockets would in contrast to minor dents be dangerous to the body part to be protected and, furthermore, promote the formation of cracks and, hence, of perforations.Due to the measures according to the invention, the movabilityofthe textile plane formation and of the individual textile layers of the intermediate layer can be restricted to the optimum extent because in particular the edge region of the textile intermediate layer is secured to one of the shells, preferably the inner shell.
A sufficiently firm connection between the textile intermediate layer and the (inner) shell is preferably obtained by riveting, with the distance between the rivets being not too small because the stability of the (inner) shell would otherwise be too weak (perforating effect). This is also true for other mechanical fastening means which are inserted in a point-like manner, such as screws, clamps or the like. Preferably, the distance between the individual fastening means should be greater than 4 cm. When the textile intermediate layer is sewed to the inner shell, suitably great stitch lengths should be observed in an analogous manner. In addition to the point-bypoint connection by means of rivets etc. or, if desired, instead thereof, the edge region of the textile intermediate layer can be glued and/or clamped to the (inner) shell.The firm connection between the textile intermediate layer and the inner shell is more advantageous than a connection with the outer shell.
Particularly suitable for the inner and outer shell of the protective element are solid, dense materials, in particular such having a low specific weight, because the protective element must not be too heavy.
Most suitable materials for the shells are therefore plastics materials (reinforced or not reinforced), above all rigid plastics materials. Rigid plastics materials are, for example, the various thermosetting plastics, further thermoplastics which are in rigid condition (below the second-order transition temperature) at service temperature, but also toughelastic semi-crystalline plastics materials, for example polyamide. A particularly favourable example or a rigid plastics material is polycarbonate having a ball indentation hardness of about 100 N/mm2 and a modulus of elasticity of 2300 N/mm2. The shells may comprise one or several layers. The inner shell may have recesses in some places.
Particularly when the shells are of plastics material, the intermediate layer forms the actual or at least predominantly splinter- and projectile resistant element. The intermediate layer then preferably consists of several layers of textile plane formations.
It is of advantage when the layers of textile plane formations are at least mostly threads or fibers of aramid or of polyamide 6.6. Textile plane formations are all plane formations of textile threads or fibers, such as woven fabrics, braids, knitted fabrics, warp knitted fabrics, fleeces or the like. Depending on the shape of the protective element, it is of advantage to compose the single layer of a textile plane formation of several segments connected by seams. It is of advantage when the layers of textile plane formations are sewed, glued or clamped together in a point- or line-shaped manner.
Between the textile layers of the intermediate layer and the inner shell, an insert of elastic compressible material may be arranged which completely fills the space between the textile layers and the shell. The insert of elastic compressible material may be advantageously foam material, in particular soft foam material, based on plastics material or rubber.
Elastomers or similar elastically deformable plastics materials are also suitable. The insert of elastic compressible material may comprise one but also several layers. The insert of elastic compressible material is advantageously fitted in compressed prestressed conditiion. This is best done by compressing a prefabricated insert which is overdimensioned with respect to its thickness upon connection of the outer and the inner shell, or else, by foaming the internal space between the layers of textile plane formations and the shell after having joined the outer and the inner shell.
The structure, in particular also the sequence and number of layers or individual layers of the intermediate layer (which means the entity of the material arranged between the outer shell and the inner shell) can be selected according to the respective requirements.
The invention will be described, by way of example, with reference to the accompanying diagrammatic drawings, in which:
Figure 1 shows a vertical sectional view of the helmet,
Figure2 shows an enlarged section A of the helmet side wall, and
Figure 3 shows an enlarged section B of the edge region of the helmet.
The illustrated helmet comprises an outer shell 1 of rigid plastics material, e.g. polycarbonate, a textile intermediate layer 2 of a number of (e.g. eight to sixteen) layers of aramid fabric and an inner plastics shell 3 which is also of rigid plastics material, e.g.
polycarbonate. The individual layers of the textile intermediate layer 2 are sewed to one another. In its entirety, the textile intermediate layer 2 is riveted to the inner plastics shell in the edge region of the helmet. About 14 rivets 4 are arranged over the circumference of the helmet.
In the peripheral edge region the inner plastics shell 3 has a groove-shaped edge profile 5 which is open with respect to the peripheral edges of the other helmet layers 1,2,4. The outer plastics shell 1 engages with its free peripheral edge portion 6 into the groove-shaped profile 5, the thickened edge portion 6 of the plastics shell 1 engaging into the bent leg 7 of the groove-shaped profile 5. The movability of the free edge portion 6 of the outer plastics shell 1 in direction towards the inner plastic shell 3 is limited by the flange 8 to prevent the free edge portion 6from upwardly escaping from the groove-shaped edge profile 5 and the outer plastics shell 1 from being separated from the other layers of the helmet.The illustrated movable edge connection further allows a torsional movement of the outer plastics shell 1 with respect to the inner plastics shell 3 about the vertical axis 9 (Figure 1 ) of the helmet, which movement is, however, limited because of the helmet shape which is usually rotationally nonsymmetric with respect to the axis 9.
Between the leg 7 of the profile 5 and the free edge 6 of the outer plastics shell 1, there may also be
provided an elastomeric sealing, for example of a silicone-elastomer, which does not prevent the desired movability of the edge connection.
The interior outfit 10 of the helmet (only indicated)
is secured to the side wall of the helmet by means of four screw connections, a shoulder screw 11 with a
sleeve-shaped nut 12 being used.
Further to helmets, the invention may also be
applied, for example, to covers for vehicles, station
ary or portable protective shields or the like.
Claims (11)
1. A multilayer, projectile and/or splinter resistant, self-rigid protective eiement, preferably for the protection of the human body or parts thereof, comprising at least an inner shell of solid material an at least partly textile intermediate layer and an outer shell of solid material, the outer and the inner shells being connected with each other at the peripheral edge, wherein the textile intermediate layer is at least in the edge region at least in some points firmly connected with only one of the two shells.
2. A protective element according to Claim 1 wherein the inner shell and/or outer shell is of plastics material.
3. A protective element according to Claim 1 or 2 wherein the textile intermediate layer is connected to the inner shell.
4. A protective element according to any one of
Claims 1 to 3 wherein the textile intermediate layer is point-by-point firmly connected with the inner or outer shell.
5. A protective element according to Claim 4 wherein the textile intermediate layer is connected with the inner or outer shell at distances of at least 4 cm.
6. A protective element according to any one of
Claims 1 to 5 wherein the intermediate layer is mechanically connected with the inner or outer shell.
7. A protective element according to Claim 6 wherein the intermediate layer is connected with the inner or outer shell by riveting.
8. A protective element according to any one of
Claims 1 to 7 wherein the textile intermediate layer is glued to the inner or outer shell.
9. A protective element according to any one of
Claims 1 to 3 wherein the textile intermediate layer is glued to the inner or outer shell.
10. A protective element substantially as hereinbefore described with reference to and as illustrated in the accompanying drawing.
11. A protective element according to Claim 1 constructed, arranged and adapted to operate substantially as herein described with reference to, and as shown in, the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT0347183A AT380569B (en) | 1983-09-29 | 1983-09-29 | PROTECTIVE ELEMENT |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8424557D0 GB8424557D0 (en) | 1984-11-07 |
| GB2148185A true GB2148185A (en) | 1985-05-30 |
| GB2148185B GB2148185B (en) | 1987-08-26 |
Family
ID=3550989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08424557A Expired GB2148185B (en) | 1983-09-29 | 1984-09-28 | A multilayer protective element |
Country Status (6)
| Country | Link |
|---|---|
| AT (1) | AT380569B (en) |
| BE (1) | BE900709A (en) |
| FR (1) | FR2552868A1 (en) |
| GB (1) | GB2148185B (en) |
| NL (1) | NL8402969A (en) |
| ZA (1) | ZA847446B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT407088B (en) * | 1998-09-17 | 2000-12-27 | Magna Eybl Gmbh | COMPONENT FOR SECURITY VEHICLES |
| WO2006041355A1 (en) * | 2004-09-07 | 2006-04-20 | Poc Sweden Ab | Helmet |
| RU2309044C1 (en) * | 2005-12-26 | 2007-10-27 | Закрытое акционерное общество Центр высокопрочных материалов "Армированные композиты" | Form manufacturing method for articles of laminate polymeric composition materials |
| ITBO20090240A1 (en) * | 2009-04-15 | 2010-10-16 | Aliena Di Vicini Oliviero & C S A S | METHOD FOR MOLDING PROTECTIVE HELMETS IN COMPOSITE MATERIAL |
| RU2564970C1 (en) * | 2014-11-18 | 2015-10-10 | Закрытое акционерное общество "Центр высокопрочных материалов "Армированные композиты" (ЗАО ЦВМ "Армоком") | Method of production of armour helmet from laminated polymeric composites and armour helmet from laminated polymeric composites |
| EP2998688A4 (en) * | 2013-05-13 | 2017-01-04 | Fedur, S.A. | Fragment- and bullet-proof helmet |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3901191A1 (en) * | 1989-01-17 | 1989-08-24 | Kurt Dipl Ing Bluemel | Protective suit for motorcyclists, having an integrated helmet, and method for the manufacture of the protective suit |
| RU2453468C1 (en) * | 2011-03-11 | 2012-06-20 | Общество с ограниченной ответственностью Научно-производственное предприятие "АРМОКОМ-ЦЕНТР" | Method of fabricating diver's helmet from laminar composite materials, mould for fabrication of diver's helmet from laminar composite materials and diver's helmet from laminar composite materials |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR493424A (en) * | 1917-05-05 | 1919-08-08 | Victor Gruyelle | Kind of compressed paper armor against projectiles |
| US2789076A (en) * | 1953-09-21 | 1957-04-16 | Frieder | Laminated ballistic fabric |
| DE1065302B (en) * | 1955-05-09 | 1959-09-10 | General Textile Mills, Inc., Carbomdale, Pa. (V. St. A.) | Armor, especially helmet, and methods of making them |
| FR1199137A (en) * | 1958-06-14 | 1959-12-11 | Tech Du Verre Tisse | Fixing method for laminated armor |
| AT378779B (en) * | 1983-01-31 | 1985-09-25 | Oregon Ets Patentverwertung | MULTI-LAYER, SHOOT AND / OR SPLITTERHEMMER, IN itself stiff protective element |
-
1983
- 1983-09-29 AT AT0347183A patent/AT380569B/en not_active IP Right Cessation
-
1984
- 1984-09-21 ZA ZA847446A patent/ZA847446B/en unknown
- 1984-09-27 FR FR8414861A patent/FR2552868A1/en not_active Withdrawn
- 1984-09-28 NL NL8402969A patent/NL8402969A/en not_active Application Discontinuation
- 1984-09-28 BE BE0/213745A patent/BE900709A/en not_active IP Right Cessation
- 1984-09-28 GB GB08424557A patent/GB2148185B/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT407088B (en) * | 1998-09-17 | 2000-12-27 | Magna Eybl Gmbh | COMPONENT FOR SECURITY VEHICLES |
| WO2006041355A1 (en) * | 2004-09-07 | 2006-04-20 | Poc Sweden Ab | Helmet |
| RU2309044C1 (en) * | 2005-12-26 | 2007-10-27 | Закрытое акционерное общество Центр высокопрочных материалов "Армированные композиты" | Form manufacturing method for articles of laminate polymeric composition materials |
| ITBO20090240A1 (en) * | 2009-04-15 | 2010-10-16 | Aliena Di Vicini Oliviero & C S A S | METHOD FOR MOLDING PROTECTIVE HELMETS IN COMPOSITE MATERIAL |
| EP2998688A4 (en) * | 2013-05-13 | 2017-01-04 | Fedur, S.A. | Fragment- and bullet-proof helmet |
| RU2564970C1 (en) * | 2014-11-18 | 2015-10-10 | Закрытое акционерное общество "Центр высокопрочных материалов "Армированные композиты" (ЗАО ЦВМ "Армоком") | Method of production of armour helmet from laminated polymeric composites and armour helmet from laminated polymeric composites |
Also Published As
| Publication number | Publication date |
|---|---|
| ZA847446B (en) | 1985-05-29 |
| BE900709A (en) | 1985-03-28 |
| GB2148185B (en) | 1987-08-26 |
| NL8402969A (en) | 1985-04-16 |
| FR2552868A1 (en) | 1985-04-05 |
| GB8424557D0 (en) | 1984-11-07 |
| ATA347183A (en) | 1985-10-15 |
| AT380569B (en) | 1986-06-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9572387B2 (en) | Helmet edge band | |
| US3465363A (en) | Safety helmet sizing band | |
| US8615817B2 (en) | Protective headgear and protective armour and a method of modifying protective headgear and protective armour | |
| US5517894A (en) | Explosion proof mat | |
| US5534343A (en) | Flexible ballistic resistant article having a thermoplastic elastomeric honeycomb panel | |
| US5020157A (en) | Ballistic protective insert for use with soft body armor by female personnel | |
| GB2148185A (en) | A multilayer protective element | |
| JPS59166741A (en) | Positive transmission type power transmission belt | |
| US3367660A (en) | Fibrous archery target with laminated reinforcing means | |
| US4956932A (en) | Gun recoil pad | |
| KR20010043095A (en) | Method for fixing a ring made of a sound-absorbing material on a rim and motor vehicle wheel having a ring made of sound-absorbing material fixed on the rim | |
| GB2099963A (en) | The protection of sheet material from the effect of explosive charges | |
| US2351235A (en) | Helmet | |
| GB2136676A (en) | A multilayer projectile and/or splinter resistant protective element | |
| US3237201A (en) | Suspension means | |
| US3908571A (en) | Strapping | |
| CA1148463A (en) | Adhesives for repair of motor vehicle tires | |
| US4871598A (en) | Container with flexible walls | |
| GB2234156A (en) | Anti-ballistic body armour | |
| RU2103208C1 (en) | Container | |
| WO1998030289A1 (en) | Football, e.g. for rugby | |
| RU2087111C1 (en) | Shock-resistant composite helmet | |
| US20050263308A1 (en) | Damping structure for pneumatic tool | |
| US2709810A (en) | Shock absorbing media | |
| RU2074626C1 (en) | Crash helmet case |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |