CN101820785A - Helmet containing polyethylene fibers - Google Patents
Helmet containing polyethylene fibers Download PDFInfo
- Publication number
- CN101820785A CN101820785A CN200880111169A CN200880111169A CN101820785A CN 101820785 A CN101820785 A CN 101820785A CN 200880111169 A CN200880111169 A CN 200880111169A CN 200880111169 A CN200880111169 A CN 200880111169A CN 101820785 A CN101820785 A CN 101820785A
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- Prior art keywords
- helmet
- shell
- reinforcing profile
- fiber
- adhesive
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- 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
-
- 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
Abstract
An anti-ballistic helmet (1) having a shell (2) containing mono-layers of uni-directional ultrahigh molecular weight polyethylene (UHMwPE) fibers, the shell is at its rim being connected to a reinforcing profile (3).
Description
The present invention relates to have the bulletproof halmet of shell, described shell contains the individual layer of unidirectional ultra-high molecular weight polyethylene (UHMwPE) fiber.
Unless otherwise, bulletproof halmet is called as the helmet hereinafter simply, and it is from US4, and 613,535 is known.At US 4,613, the profiled part of the individual layer that contains unidirectional UHMwPE fiber and adhesive has been described in 535.The example of profiled part comprises ballistic-resistant article, for example the helmet.This profiled part has in addition one deck rigid layer at least on the main surface of described parts, have the rigid parts of increase with manufacturing.
A subject matter of the exploitation helmet is the weight that obtains reduction.Consider known steel toe helmet, reduction has much significance for weight to introduce composite helmet and making process thereof.The improvement of design and use material has brought bigger weight to reduce.But, still need further to reduce weight, but do not sacrifice shellproof protection, service life and the traumatic resistance of the helmet simultaneously.For example, for airborne troop, it is very important keep the head total load to be lower than can accepting the limit, and the equipment installed on its helmet of the soldier of army is more and more simultaneously, for example communication apparatus, night observation device etc., and this also can gain in weight.
In most of the cases, the approach of seeking solution provides complicated composite structure, makes up dissimilar layers.An example is US 4,613,535 mentioned above.Another example is to be disclosed in WO961478 and US Army Research Laboratory Weapons ﹠amp; The S.M.Walsh of materialsResearch Directorate Aberdeen Proving Ground, B.R.Scott, ' the helmet among the Hybridizedthermoplastic aramids enabling material technology for future force headgear ' that D.M.Spagnuolo and J.P.Wolbert deliver in SAMPE 2005 meetings, wherein, most promising structure is to contain aramid fiber (aramid) composite layer as basalis and the hard formation shell as outer (carbon fiber-containing and epoxides).
The purpose of this invention is to provide the helmet that has low gross weight but still enough protections of attacking at trajectory can be provided, and this helmet has good durability.
Surprisingly, this purpose is satisfied by the following helmet, and the described helmet has following shell, and described shell contains unidirectional UHMwPE fiber and the preferred individual layer that also has adhesive, and wherein, helmet shell links to each other with reinforcing profile (reinforcing profile) at its edge.The function of adhesive is that fiber is remained to together.But, also can fiber be linked together by under sufficiently high temperature, suppressing with sufficiently high pressure, replace the application of adhesive with this.
Unexpectedly,, partly obtained at the enough shellproof protection of impacting, made to produce the helmet that has low weight but still have excellent durability at the helmet away from described edge by edge application reinforcing profile at shell.Be not excluded outside scope of the present invention though have the helmet of additional stiffness layer on the surface of its shell, even may produce yet and do not have this helmet that is generally used for the rigid layer in the composite helmet and making process thereof.
From the known a kind of crash helmet of Australian patent application No.2005/202254 A1, it has provides interior rigid layer that strengthens the edge and the skin of preferably being made by high density foam (foam).But disclosed crash helmet is only applicable to building or sports helmet in the document, and it clearly is not suitable for use in being bulletproof halmet.The protection mechanism significant discomfort that this helmet structure provides is used to keep out bullet, and keeping out bullet needs other mechanism bullet energy that dissipates.Though the enhancing edge is provided for interior rigid layer, this application is not mentioned the existence that strengthens the edge to ballistic properties directly or even the indirect benefit of long distance.
The present invention will further be explained in the accompanying drawings, but the present invention is not limited to the embodiment of example among these figure.In these figure,
Fig. 1 shows the side view according to the helmet of the present invention.
Fig. 2 shows the cutaway view according to the helmet of the present invention.
Fig. 3 shows the bottom view according to the helmet of the present invention.
Fig. 1 shows the helmet (1), and it contains shell (2), and described shell contains unidirectional fibre and the preferred individual layer that also has adhesive.At its edge, described shell links to each other with reinforcing profile (3).Described reinforcing profile has preferred fiber orientation, its have on the reinforcing profile direction fiber and with the reinforcing profile direction at 45 and-fiber of 45.
Fig. 2 shows the cutaway view according to the helmet of the present invention (1), and the described helmet contains shell (2) and reinforcing profile (3), and described reinforcing profile is the U type.Described shell embeds between the leg of U type reinforcing profile, and locates to link to each other with described reinforcing profile with (3.3) in surface (3.1), (3.2) of reinforcing profile.
Fig. 3 shows according to the helmet of the present invention (1), and it has shell (2) and reinforcing profile (3).
Preferably, the shell of the helmet of the present invention comprises the individual layer of unidirectional UHMwPE fiber and adhesive.
According to the present invention, term " unidirectional UHMwPE fiber and preferably also have the individual layer of adhesive " refers to the UHMwPE fiber of one-way orientation and the fiber network layer of adhesive in addition preferably, and described adhesive remains to fiber together substantially.The fibring of term one-way orientation is the fiber of substantially parallel orientation in one plane.
The term fiber not only comprises monofilament, and it also comprises multifilament yarn or flat band etc.The width of flat band is preferably 2mm to 100mm, and more preferably 5mm to 60mm most preferably is 10mm to 40mm.The thickness of flat band is preferably 10 μ m to 200 μ m, more preferably 25 μ m to 100 μ m.
UHMwPE fiber in the individual layer of the helmet of the present invention preferably has at least the hot strength of about 1.2GPa and the stretch modulus of 40GPa at least.Described fiber preferably has 2GPa at least, further preferred 2.5GPa at least or the hot strength of 3GPa at least most preferably.The advantage of these high strength fibres is that they are suitable for use in the lightweight bulletproof goods very much.
If use linear UHMwPE, obtain good result so.Linear UHMwPE is understood that to mean per 100 C atoms in this article to have less than 1 side chain, and preferred per 300 C atoms have the polyethylene less than 1 side chain; Side chain or side chain contain at least 10 C atoms usually.Linear polyethylene also can contain 5mol% at the most one or more can with other alkene of its copolymerization, for example, propylene, butylene, amylene, 4-methylpentene, octene.Preferably, linear polyethylene has high molecular weight, and inherent viscosity (IV according to method of testing described below, under 135 ℃, measures in the solution of decahydronaphthalenes) is 4dl/g at least, more preferably 8dl/g at least.Inherent viscosity is measuring of molecular weight, its ratio such as M
nAnd M
wDetermine etc. actual molar mass parameters is easier.IV and M
wBetween have some empirical relations, but these relations highly depend on molecular weight distribution.Based on equation M
w=5.37 * 10
4[IV]
1.37(seeing EP 0504954 A1), 4 or the IV of 8dl/g be equivalent to about 360 or the M of 930kg/mol respectively
w
Prepare the UHMwPE fiber by gel spinning technology, for example preferably use the technology described in GB 2042414A or the WO 01/73173.This causes extraordinary shellproof protection/weight performance.Gel spinning technology is made up of following steps basically: preparation has the solution of the linear polyethylene of high molecular weight; This solution is spun into filament being higher than under the temperature of solution temperature; Filament is cooled to below the gelation temperature generation gelling as a result; And remove desolvate before, during or with the after-drawing filament.
In a kind of preferred implementation of the present invention, the shell of the helmet comprises a plurality of individual layers of the UHMwPE fiber of one-way orientation, and described individual layer is grouped into two-layer at least lamella (sheet).Lamella preferably contains two-layer at least individual layer.Individual layer in the lamella can be placed so that certain angle to be arranged each other, and described angle is being between 0 ° to 90 °.Lamella also can be placed as has angle each other.
Term " adhesive " refers to and will comprise the material that unidirectional fibre in the lamella of individual layer of one-way orientation fiber and adhesive is bonding or keep together, described adhesive can all or part ofly be sealed described fiber, thereby keeps single layer structure in processing with during preparing prefabricated lamella.Adhesive can use with various forms and mode, for example as film (melt to small part by it and cover the UHMwPE fiber), as horizontal adhesive tape with as transverse fiber (is horizontal with respect to unidirectional fibre) or by fiber is flooded and/or embedding with host material (for example molten polymer or polymeric material solution or the dispersion liquid in liquid).Preferably, host material is distributed evenly on the whole surface of individual layer, and adhesive tape or binder fibre can local applications.For example among EP 0191306 B1, EP1170925 A1, EP 0683374 B1 and EP 1144740 A1 suitable adhesive has been described.
A kind of preferred embodiment in, adhesive is a polymer matrix material, it can be thermosets or thermoplastic or the mixture of the two.The elongation at break of host material is preferably greater than the elongation of fiber rate.Adhesive preferably has the percentage elongation of 2-600%, more preferably has the percentage elongation of 4-500%.For example suitable thermosetting and thermoplastic matrix material have been enumerated among WO 91/12136 A1 (15-21 page or leaf).At host material is under the situation of thermosetting polymer, preferably selects vinyl esters, unsaturated polyester (UP), epoxy resin or phenolic resin as host material.At host material is under the situation of thermoplastic polymer, preferably selects polyurethane, polyvinyl, polyacrylic acid resinoid, polyolefin or thermoplastic elastomer block copolymer (for example polyisoprene-polyethylene-butylene-polystyrene or polystyrene-poly isoprene-polystyrene block copolymer) as host material.Preferably, adhesive is made up of thermoplastic polymer, these adhesives preferably are coated on the every filament of fiber described in the individual layer fully, and these adhesives have 75MPa at least, more preferably 150MPa at least, further more preferably 250MPa at least, the most preferably stretch modulus of 400MPa (under 25 ℃, measuring) at least according to ASTM D638.Preferably, described adhesive has the stretch modulus of 1000MPa at the most.Described adhesive should selectedly be: the lamella that can cause comprising individual layer has high flexibility, makes the shell of being suppressed by described lamella have sufficiently high stiffness (stiffness) simultaneously.
Preferably, the content of adhesive in individual layer is 30 quality % at the most, more preferably at the most 25,20 or even 15 quality % at the most.This causes producing best ballistic performance.
If the direction of fiber orientation is the angle between 5 to 90 ° in the adjacent monolayer, preferred 45 to 90 °, most preferably 75 to 90 °, obtain good result so.
The differently-oriented directivity of the UHMWPE fiber in individual layer is at a certain angle towards helmet edge, and the helmet so of the present invention obtains extraordinary result.Preferably, in the shell differently-oriented directivity of the fiber in the individual layer respectively with+30 and+angle between 60 ,-30 ° and-60 ° is towards helmet edge.More preferably, this angle is respectively+and 40 to+50 °, between-40 to-50 °, most preferably, be respectively+45 ° or about 45 °-45 ° or approximately-45 °.
Shell still can contain resists layer stubbornly, for example metal or the ceramic scope of attack, and perhaps hard composite top layer, for example, the weaving of heat of immersion thermosetting resin (woven) glass fabric.But, preferably do not have such layer, thereby obtain the helmet optimum with regard to weight, shellproof protection and durability.The term durability will be explained hereinafter.
Reinforcing profile can be made by the light material of all kinds with high stiffness and intensity.Good example comprises metal, for example steel, titanium, aluminium, magnesium and alloy thereof.Preferably, make reinforcing profile by the composite that contains the fortifying fibre and second adhesive.Composite can contain the fortifying fibre of all kinds, for example, and organic fiber, for example aramid fiber.More preferably, composite contains inorfil, for example, and ceramic fibre, glass fibre, basalt or silicon carbide fibre.Usually, this fibrid contains at least 15% silicon.Most preferably, composite contains carbon fiber.If select composite for use, the orientation number of fortifying fibre is at least 2.More preferably at least three kinds of fibers are orientated.Suitable orientation can be become with the reinforcing profile direction 0 °, 90 ° ,+45 ° and-45 °, shown in Fig. 1 (3).Most preferably, fiber become with the reinforcing profile direction 0 ° ,+45 ° and-45 ° of orientations.According to the machine direction of mentioning, the fiber in the composite can be weaved, and perhaps can be unidirectional array.
Second adhesive in the composite of reinforcing profile should preferably demonstrate reasonable adhesiveness and the preferred modulus of 1400MPa at least with fiber.The amount of second adhesive can be by volume between 20 to 70%, more preferably by volume between 35 to 55%.
Preferably, the compressive yield stress of reinforcing profile is at least 2 times of compressive yield stress of shell, and more preferably at least 4 times most preferably is at least 6 times of compressive yield stress of shell.Compressive yield stress is measured by ASTM D 6641 (2001 issue).Comprise under the situation of long and narrow enhancing element (for example fiber) at the enhancing edge, should on the direction of those described enhancing elements of placing along the edge, measure compressive yield stress.Observed already, the enhancing edge with required compressive yield stress makes the helmet of the present invention have improved bullet-proof, and particularly bullet-proof is improved on away from the position at edge.Another advantage is that this type of helmet has even further improved durability.
Reinforcing profile can have the cross section of the shape of all kinds, for example L type or U type.Preferably, reinforcing profile has the U type.In addition, just embed in the U type reinforcing profile as shell, U type reinforcing profile can link to each other easily and reliably with shell.
Reinforcing profile links to each other at described shell edge with the shell of the helmet.Link to each other and represent that in this article reinforcing profile is fixed on the shell of the helmet, make the power that acts on the shell can effectively be transferred to reinforcing profile and be enhanced section bar weakening, vice versa.
Can reinforcing profile be linked to each other with the shell of the helmet according to any known method of this area.Suitable example comprises with suitable adhesive (adhesive) and being stained with, by heat fixation, perhaps simply by against the side of U type reinforcing profile up to well secured the carrying out that obtains on shell.
When the length that strengthens the overlapping part in edge and the side of the shell of the helmet at least 0.5 times of thickness of the shell preferably, more preferably at least 1 times, when most preferably being at least 2 times of thickness of the shell, obtain good continuously, described thickness is in the measurement of the bottom of the shell of the helmet.This type of helmet demonstrates even further improved durability and improved ballistic properties, particularly in the position away from described edge.
Preferably, the thickness that strengthens the overlapping part in edge and the side of the shell of the helmet is small enough to not cause the unnecessary increase of thickness bottom the helmet.Preferably, the helmet increases less than 30% at the thickness of its bottom, is more preferably less than 20%, most preferably less than 10%.Such helmet shows that good ballistic properties is again a lightweight simultaneously.It also has the multifunctionality (versatility) of increase in addition.
The technical staff knows how to select suitable production technology, prepares the parts and the helmet itself of the helmet.Can make the shell of the helmet by the technology that contains following step: the lamination that forms cross layered (cross-plied) lamella of the individual layer that contains the UHMwPE fiber of a plurality of unidirectional array and preferably also have adhesive, lamination is placed in the mould, closing molding is with laminated forming be cured as the shell of helmet shape.This type of technology was described in WO2007/107359.
Reinforcing profile can be mechanism or molded light metal parts.But preferably, reinforcing profile is a carbon fibre composite, its along helmet edge by lamination.
Preferably, be 1.2kg at the most, 1.1kg at the most more preferably, further more preferably 1.0kg at the most according to the gross weight of the shell of the helmet of the present invention and reinforcing profile.
Also in embodiment and comparative experiments, the present invention is further set forth.
The helmet made among relatively experiment and the embodiment is carried out two types test.First kind of test is the shooting test of carrying out with 17grain fragment simulator projectile (FSP).Second kind of test is so-called durability test.
The shooting test
By the helmet being sandwiched in the chuck apparatus suitable before the rifle, shoot test.Chuck apparatus is made as: make the helmet to be rotated, and subsequently can be rigidly fixed once more.By this way, rotate the helmet and fixing once more after every emission is hit, thereby can shoot about 8 each helmet.
First with expection exist 50% opportunity for penetration predetermined speed (promptly with the expection so-called V
50Value) penetrates.The speed of all imitating shells all short distance before impacting is measured.Measure with optical device.If taken place to penetrate, next FSP then penetrates with predetermined speed than last imitating shell low 10%.If imitating shell is stopped and does not penetrate, next imitating shell then penetrates with the predetermined speed than last imitating shell big 10% so.To guarantee that always the distance between impact position is large enough to prevent that wound area (being subjected to the zone of shock effect) is overlapping.Usually, can shoot about 8 to each helmet by this way.Obtain experiment V by three average speeds in the maximum speed that stops under this speed and three minimum speeds that under this speed, penetrate
50Value.When only obtaining to stop or only penetrating for twice for twice, obtain V by twice termination the highest and twice minimum penetrating
50Feature kinetic energy U as FSP at V
50The time kinetic energy obtain i.e. 0.5mV
50 2The quality m of 17 grain FSP equals 0.0011kg.The performance of the helmet and V
50The time feature kinetic energy U relevant with helmet mass M.Therefore, obtain P=U/M as performance parameter.
Durability test
On 2 relative positions on the helmet edge, the helmet is imposed compression stress corresponding to the position of the usefulness person's ear of wearing.The position of compression force is selected as preventing from also to compress the enhancing edge thus near strengthening the top, edge.Measurement changes as the helmet shape of the function of compression stress.
Under the power of 1500N (approximately being the twice of body weight for humans), the displacement that produces in the shell of the helmet (displacement) is considered to representational Q factor, and it is hereinafter referred to as " displacement ".
After the recovery of unloading compression stress and 5 minutes, measure helmet change of shape once more.This value is called as " distortion (deformation) ".
Should be noted that the power when helmet shell layering or plastic deformation take place should be far above the power of this 1500N.
Enough hour of distortion when 1500N, this load repeats 24 times, and the record Displacement Development: this is called as " traumatic resistance " or abbreviates " durability " as.
Other method of testing
Side chain: by FTIR, on the thick mold pressing film of 2mm, determine the side chain quantity in the UHPE sample, wherein, utilize the calibration curve of measuring based on NMR that quantitatively (for example, EP 0269151) is carried out in the absorption at 1375cm-1 place;
IV: according to method PTC-179 (Hercules Inc.Rev.Apr.29,1982) measure inherent viscosity, test condition is: under 135 ℃, in the decahydronaphthalenes, dissolution time is 16 hours, adopt consumption be the DBPC of 2g/l solution as antioxidant, the viscosity extrapolation that wherein will measure under variable concentrations obtains the viscosity under the zero-dose.
Hot strength (intensity): according to ASTM D885M defined, definition and measurement hot strength (or intensity) wherein use nominal calibrated length to be the fiber of 500mm, the crosshead speed of 50%/min and Instron 2714 anchor clamps of Frbre Grip D5618C model on the multilayer yarn.Be calculating strength, divided by fiber number, this fiber number is determined by the 10 meters long fibers of weighing with the tension force of measuring; The density of supposing UHMwPE is 0.97g/cm
3Calculate value in GPa.
Comparative experiments A
Lamination by 50 layers of cross layered lamella is made the helmet, and described lamella comprises two-layer individual layer, and the hot strength that described individual layer has 80w% is unidirectional array UHMwPE fiber and the thermoplastic adhesives of 3.5GPa.The fiber of two-layer individual layer is oriented to approximate vertical in the cross layered lamella.The helmet is to make like this: lamination is placed in the open mold with helmet shape, follows closing molding under 130 ℃ temperature, at 8MPa (promptly, pressure is divided by the projection surface of the helmet) pressure solidify down after 1 hour, the cooling helmet, the demoulding, and modify desired size.Average helmet mass M is 0.876kg.The helmet is tested, and test result provides in table 1.
Comparative experiments B
Use the technology identical, but replace 50 layers, make the helmet with 42 layers lamination with comparative experiments A.Similar among pressure during the pressing mold and the comparative experiments A.After the demoulding and modifying, average quality is 0.737kg.Subsequently, after the demoulding and modifying, the helmet is carried out laminating technology with carbon fibre fabric.Use normal business epoxy resin,, four layers of twill carbon fibre fabric (surface density is 0.12kg/m2) are carried out lamination in helmet outside.Resin can at room temperature solidify.But, under surrounding air, solidify after 2 days, in 40 ℃ of baking ovens, carry out the back and solidify.Carrying out the back solidifies to guarantee all to reach optimum sclerosis at all position epoxy resin of the helmet.Thus, make the helmet with the hard outer layer of carbocyclic ring oxygen compound.The thickness of the helmet is near the thickness with reference to the helmet among the embodiment 1.But behind the interpolation hard outer layer, the average quality of the helmet is 0.946kg.The helmet is tested, and test result provides in table 1.
Embodiments of the invention
According to comparative experiments A in identical method make the helmet.But, after the demoulding and modifying, around helmet edge lamination carbon fiber ring O compoiste material, and according to solidifying with the described identical method of comparative experiments B.Carbon fiber epoxy [amount of epoxy is 40% by volume] composite layer by width be 80mm, flat belt-like fabric with three kinds of fibers orientation constitutes, shown in Fig. 1 (3).The surface density of flat belt-like fabric is 600g/m
2A kind of fiber orientation is the length direction of flat band.Other two kinds of fibers orientation is to become with flat band direction+45 degree and-45 degree.Along helmet edge lamination flat band only, as shown in the figure, wherein flat end and the end 3cm that overlaps each other that takes the lead.Quality with the helmet at such edge is 0.940kg.The helmet is tested, and test result provides in table 1.
The result shows, the helmet of being made by the UHMwPE individual layer demonstrates good helmet performance parameter P at the impact of FSP fully.But durability is lower.It only can support very low transverse compression load, and the distortion that produces is huge.The adding hard outer layer has improved the distortion of shell, but the still non-the best of its durability.Displacement can partly recover more greatly and only.In addition, the ballistic performance shown in the parameter P has decline considerably.
Yet the helmet according to the present invention demonstrates IMAGE, simultaneously only limited displacement and almost not distortion.It also demonstrates V surprisingly
50Increase, therefore demonstrate improved ballistic properties than the known helmet.
Claims (13)
1. bulletproof halmet, it has shell, and described shell contains the individual layer of unidirectional ultra-high molecular weight polyethylene (UHMwPW) fiber, it is characterized in that, and described shell links to each other with reinforcing profile at its edge.
2. according to the helmet of claim 1, wherein said shell also comprises adhesive.
3. according to the helmet of claim 1 or 2, wherein said reinforcing profile is the U type.
4. the helmet any according to claim 1-3, wherein said reinforcing profile is metal.
5. the helmet any according to claim 1-3, wherein said reinforcing profile comprises the composite of the fibre-bearing and second adhesive.
6. according to the helmet of claim 5, wherein said reinforcing profile contains ceramic fibre, glass fibre, basalt or silicon carbide fibre.
7. according to the helmet of claim 6, wherein said reinforcing profile contains carbon fiber.
8. the helmet any according to claim 5-7, wherein said reinforcing profile have at least two kinds of fiber orientations.
9. the helmet any according to claim 5-7, wherein said U ring has at least three kinds of fiber orientations.
10. according to the helmet of claim 9, wherein a kind of fiber is got the direction that fiber is described reinforcing profile, other two kinds of orientations be become with described reinforcing profile direction+45 degree and-direction of miter angle.
11. according to any described helmet among the claim 1-10, the gross weight of wherein said shell and reinforcing profile is 1.2kg at the most.
12. according to any described helmet among the claim 1-11, the compressive yield stress of wherein said reinforcing profile is at least 2 times of compressive yield stress of described shell, described compressive yield stress is measured by ASTM D6641.
13. according to any described helmet among the claim 1-12, the length of the part that the side of the shell of the wherein said reinforcing profile and the described helmet is overlapping is at least 0.5 times of described thickness of the shell preferably.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP07020033 | 2007-10-12 | ||
| EP07020033.2 | 2007-10-12 | ||
| PCT/EP2008/008525 WO2009046979A1 (en) | 2007-10-12 | 2008-10-09 | A helmet containing polyethylene fibers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101820785A true CN101820785A (en) | 2010-09-01 |
Family
ID=39135121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200880111169A Pending CN101820785A (en) | 2007-10-12 | 2008-10-09 | Helmet containing polyethylene fibers |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20100229271A1 (en) |
| EP (1) | EP2197304A1 (en) |
| JP (1) | JP2011501088A (en) |
| KR (1) | KR20100085028A (en) |
| CN (1) | CN101820785A (en) |
| CA (1) | CA2698694A1 (en) |
| WO (1) | WO2009046979A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102152557A (en) * | 2010-11-15 | 2011-08-17 | 天津工业大学 | Preparation method of high-strength polyethylene fiber/water-soluble polyurethane composite material |
| CN102188066A (en) * | 2011-04-01 | 2011-09-21 | 户利军 | Aluminum-alloy safety helmet and manufacturing method thereof |
| CN104154819A (en) * | 2013-05-14 | 2014-11-19 | 北京同益中特种纤维技术开发有限公司 | Polyethylene composite bulletproof helmet |
| CN109757816A (en) * | 2019-01-30 | 2019-05-17 | 厦门新凯复材科技有限公司 | A kind of safety cap manufacture craft |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2949648B1 (en) * | 2009-09-08 | 2011-11-25 | Thales Sa | HELMET COMPRISING A VARIABLE RIGIDITY PROTECTION SHELL |
| US9572389B2 (en) | 2011-02-14 | 2017-02-21 | Kineticshield, Inc. | Impact and explosive force minimization structures |
| US8927088B2 (en) * | 2011-02-14 | 2015-01-06 | Kineticshield, Inc. | Helmet designs utilizing foam structures having graded properties |
| US9585433B1 (en) * | 2012-05-02 | 2017-03-07 | Rawlings Sporting Goods Company, Inc. | Fiber reinforced helmet |
| GB2525886B (en) * | 2014-05-07 | 2016-08-10 | Secr Defence | A helmet applique |
| US11026467B2 (en) * | 2016-05-05 | 2021-06-08 | Fox Head, Inc. | In-molded helmet chinbar |
| SG10201610698WA (en) * | 2016-12-21 | 2018-07-30 | Dsm Ip Assets Bv | Ballistic-resistant helmet shell |
| NO345894B1 (en) | 2019-11-18 | 2021-10-04 | Nfm As | Helmet attachment system and associated equipment |
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| GB442606A (en) * | 1934-09-19 | 1936-02-12 | Helmets Ltd | Improvements in head coverings |
| US3467964A (en) * | 1968-07-22 | 1969-09-23 | James M Hannan | Safety helmet edge bead |
| IL62357A0 (en) * | 1981-03-13 | 1982-04-30 | Orlite Eng Co Ltd | Protective helmet and method for manufacture thereof |
| US4613535A (en) * | 1985-02-28 | 1986-09-23 | Allied Corporation | Complex composite article having improved impact resistance |
| EP0380523A1 (en) * | 1987-08-03 | 1990-08-08 | AlliedSignal Inc. | Impact resistant helmet |
| DE4423398A1 (en) | 1994-07-04 | 1996-01-11 | Siemens Ag | Method and device for disposing of a cation exchanger |
| WO2005065910A1 (en) * | 2004-01-07 | 2005-07-21 | Dsm Ip Assets B.V. | Process for the manufacture of curved objects |
| AU2005202254A1 (en) * | 2005-05-24 | 2006-12-14 | Palm Products Pty Ltd | Safety head gear |
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2008
- 2008-10-09 WO PCT/EP2008/008525 patent/WO2009046979A1/en active Application Filing
- 2008-10-09 CA CA2698694A patent/CA2698694A1/en not_active Abandoned
- 2008-10-09 CN CN200880111169A patent/CN101820785A/en active Pending
- 2008-10-09 EP EP08826663A patent/EP2197304A1/en not_active Withdrawn
- 2008-10-09 US US12/682,642 patent/US20100229271A1/en not_active Abandoned
- 2008-10-09 KR KR1020107007812A patent/KR20100085028A/en not_active Application Discontinuation
- 2008-10-09 JP JP2010528315A patent/JP2011501088A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102152557A (en) * | 2010-11-15 | 2011-08-17 | 天津工业大学 | Preparation method of high-strength polyethylene fiber/water-soluble polyurethane composite material |
| CN102152557B (en) * | 2010-11-15 | 2013-06-05 | 天津工业大学 | Preparation method of high-strength polyethylene fiber/water-soluble polyurethane composite material |
| CN102188066A (en) * | 2011-04-01 | 2011-09-21 | 户利军 | Aluminum-alloy safety helmet and manufacturing method thereof |
| CN104154819A (en) * | 2013-05-14 | 2014-11-19 | 北京同益中特种纤维技术开发有限公司 | Polyethylene composite bulletproof helmet |
| CN104154819B (en) * | 2013-05-14 | 2019-04-26 | 北京同益中新材料科技股份有限公司 | The polyethylene bulletproof composite helmet |
| CN109757816A (en) * | 2019-01-30 | 2019-05-17 | 厦门新凯复材科技有限公司 | A kind of safety cap manufacture craft |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2698694A1 (en) | 2009-04-16 |
| WO2009046979A1 (en) | 2009-04-16 |
| US20100229271A1 (en) | 2010-09-16 |
| EP2197304A1 (en) | 2010-06-23 |
| JP2011501088A (en) | 2011-01-06 |
| KR20100085028A (en) | 2010-07-28 |
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Application publication date: 20100901 |