WO2020127220A1 - Coque de casque pare-balles - Google Patents

Coque de casque pare-balles Download PDF

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Publication number
WO2020127220A1
WO2020127220A1 PCT/EP2019/085590 EP2019085590W WO2020127220A1 WO 2020127220 A1 WO2020127220 A1 WO 2020127220A1 EP 2019085590 W EP2019085590 W EP 2019085590W WO 2020127220 A1 WO2020127220 A1 WO 2020127220A1
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WO
WIPO (PCT)
Prior art keywords
ballistic
helmet shell
resistant
fibers
layer
Prior art date
Application number
PCT/EP2019/085590
Other languages
English (en)
Inventor
Adrian HO CHI HSING
Original Assignee
Dsm Ip Assets B.V.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dsm Ip Assets B.V. filed Critical Dsm Ip Assets B.V.
Publication of WO2020127220A1 publication Critical patent/WO2020127220A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H1/00—Personal protection gear
    • F41H1/04—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
    • F41H1/00—Personal protection gear
    • F41H1/04—Protection helmets
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/02—Polyureas
    • 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
    • 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

Definitions

  • the present invention relates to a ballistic-resistant helmet.
  • a light-weight shell for a ballistic-resistant helmet relates to a light-weight shell for a ballistic-resistant helmet.
  • Ballistic-resistant helmets having a shell comprising a consolidated stack of layers of uni-directionally aligned ballistic resistant fibers and a binder are known in the prior art. For example from W02007/107359. A drawback with such helmets is that they can be heavy; a significant proportion of the weight comes from the helmet shell itself. A lightweight helmet shell design is described in Taiwan laid open patent application 201825857. A preferred embodiment of this includes a polyurea coating on the helmets shell.
  • An object of the present invention is to provide a light weight ballistic- resistant helmet shell which provides a good ear-to-ear stiffness, a high standard of ballistic protection, including projectile stopping capability, V50, and back face deformation.
  • a further object is to provide a helmet shell having improved flame retardancy. Accordingly, the present invention provides a ballistic-resistant helmet shell which comprises:
  • a core layer which core layer comprises a consolidated stack of layers of uni-directionally aligned ballistic-resistant fibers and a binder;
  • said coating layer comprises a polyurea and is from 0.3 to 4 mm thick.
  • the present invention also provides a ballistic-resistant helmet comprising a ballistic-resistant helmet shell.
  • a helmet shell is the basic structure of a helmet, and provides the ballistic resistance.
  • the shell excludes linings, straps, fittings, decoration and accessories.
  • a consolidated stack refers to multiple layers which are pressed together at elevated temperature to produce a single article.
  • layer of unidirectionally aligned ballistic resistant fibers and a binder refers to a layer of a fibrous network of unidirectionally oriented ballistic resistant fibers and a binder that basically holds the fibers together.
  • the fibers are essentially oriented in parallel to each other within the layer.
  • the fiber direction in a layer is at an angle a to the fiber direction in an adjacent layer.
  • a is between 5 and 90°, more preferably between 45 and 90° and most preferably between 75 and 90°.
  • average thickness is measured by taking three measurements, each measurement spaced apart from the other measurements by at least 5 cm, and calculating the mean value.
  • a thickness is preferably calculated as the average thickness.
  • the term ballistic-resistant fiber comprises not only a monofilament but, amongst others, also a multifilament yarn or a flat tape.
  • the width of a flat tape is preferably between 2 mm and 100 mm, more preferably between 5 mm and 60 mm, most preferably between 10 mm and 40 mm.
  • Thickness of a flat tape preferably is between 10 pm and 200 pm, more preferably between 25 pm and 100 pm.
  • the ballistic resistant fibers in the invention may be inorganic or organic fibers.
  • Suitable inorganic fibers are, for example, glass fibers, carbon fibers and ceramic fibers.
  • the inorganic fibers are carbon fibers produced from polyacrilonitrile.
  • Suitable organic fibers with such a high tensile strength are, for example, aromatic polyamide fibers (so-called aramid fibers), especially poly(p- phenylene terephthalamide), liquid crystalline polymer and ladder-like polymer fibers such as polybenzimidazoles or polybenzoxazoles, esp.
  • poly(1 ,4-phenylene-2,6- benzobisoxazole) PBO
  • poly(2,6-diimidazo[4,5-b-4’,5’-e]pyridinylene-1 ,4-(2,5- dihydroxy)phenylene) PI PD; also referred to as M5
  • Suitable polyolefins are in particular homopolymers and copolymers of ethylene and propylene, which may also contain small quantities of one or more other polymers, in particular other alkene-1 -polymers.
  • linear polyethylene is selected as the polyolefin.
  • Linear polyethylene is herein understood to mean polyethylene with less than 1 side chain per 100 C atoms, and preferably with less than 1 side chain per 300 C atoms; a side chain or branch generally containing at least 10 C atoms.
  • the linear polyethylene may further contain up to 5 mol% of one or more other alkenes that are copolymerisable therewith, such as propene, butene, pentene, 4-methylpentene, octene.
  • the linear polyethylene is of high molar mass with an intrinsic viscosity (IV, as determined on solutions in decalin at 135°C) of at least 4 dl/g; more preferably of at least 8 dl/g.
  • IV intrinsic viscosity
  • Such polyethylene is also referred to as ultra-high molecular weight polyethylene.
  • Intrinsic viscosity is a measure for molecular weight that can more easily be determined than actual molar mass parameters like M n and M w . There are several empirical relations between IV and M w , but such relation is highly dependent on molecular weight distribution.
  • the ballistic resistant fibers are ultra-high molecular weight polyethylene.
  • the ballistic resistant fibers have a tensile strength of at least about 1.2 GPa and a tensile modulus of at least 40 GPa. More preferably, the fibers have a tensile strength of at least 2 GPa, more preferably at least 2.5 GPa or most preferably at least 3 GPa.
  • the advantage of these fibers is that they have very high tensile strength, so that they are in particular very suitable for use in lightweight ballistic-resistant articles.
  • binder refers to a material that binds or holds the fibers together in the sheet comprising mono-layers of unidirectional oriented fibers and a binder, the binder may enclose the fibers in their entirety or in part, such that the structure of the mono-layer is retained during handling and making of preformed sheets.
  • the binder is a polymeric matrix material, and may be a thermosetting material or a thermoplastic material, or mixtures of the two.
  • the matrix material is a thermosetting polymer vinyl esters, unsaturated polyesters, epoxies or phenol resins are preferably selected as matrix material.
  • the matrix material is a thermoplastic polymer polyurethanes, polyvinyls, polyacrylics, polyolefins or thermoplastic elastomeric block copolymers such as polyisopropene- polyethylene-butylene-polystyrene or polystyrene-polyisoprene-polystyrene block copolymers are preferably selected as matrix material.
  • the binder consists of a thermoplastic polymer, which binder preferably completely coats the individual filaments of said fibers in a mono-layer, and which binder has a tensile modulus
  • the binder has a tensile modulus of at most 1000 MPa.
  • the binder is polyurethane.
  • the amount of binder in a layer comprising unidirectionally oriented ballistic resistant fibers and a binder is at most 30 mass%, more preferably at most 25, or 20% of the mass of the helmet shell.
  • the binder is present in an amount of from 12 to 20 % by weight of the layer comprising unidirectionally oriented ballistic resistant fibers and a binder. More preferably, it is present in an amount of from 13 to 18 wt.%; most preferably around 15 to 16 wt.%. This results in the best ballistic performance.
  • the amount of binder may be lower still, for example at most 7, 5 or even at most 3 % of the mass of the layer comprising unidirectionally oriented ballistic resistant fibers and a binder.
  • the coating layer comprises a polyurea.
  • the coating layer may be a polyurea coating or a polyurethane/polyurea hybrid coating.
  • a polyurea coating is the result of a one-step reaction between an isocyanate component and a resin blend component.
  • the resin blend should only contain amine-terminated resins and/or chain extenders and not any hydroxyl reactive polymer components.
  • the isocyanate can be monomer based, a prepolymer, a polymer or a blend. For the prepolymer, amine- and/or hydroxyl-terminated resins may be used.
  • a polyurethane / polyurea hybrid coating has a composition which further comprises the result of a reaction between an isocyanate component and a resin blend comprising hydroxyl containing resins.
  • the isocyanate component may be the same as for the“pure” polyurea systems.
  • the resin blend is a blend of amine- terminated and hydroxyl-terminated polymer resins and/or chain extenders.
  • the resin blend may also contain additives, or non-primary components. To bring the reactivity of the hydroxyl-containing resins to the same level of reactivity as the amine-terminated resins, the addition of one or more catalysts may be applied.
  • the coating layer comprising a polyurea is preferably applied by spraying using techniques known in the art. Typically a mixture of isocyanate and resin blend in a diluent is used during spraying. In addition, additives may be included in the spray.
  • a preferred polyurea coating is Paxcon ® available from Line-X ® , Huntsville, Alabama, USA.
  • the helmet shell further comprises:
  • each of the coating layers b and c are from 0.4 to 3 mm thick.
  • each of the coating layers b and c are from 0.5 to 2 mm thick.
  • a tie layer is a layer which is bonded at each face to different layers and facilitates bonding between those two layers.
  • a ballistic-resistant helmet shell of the present invention typically comprises a tie layer between the core layer and one or both of the coating layers, b and c.
  • a typical tie layer comprises a fabric impregnated with a matrix.
  • the fabric may comprise a fiber selected from the earlier listed range of ballistic-resistant fibers.
  • a preferred ballistic-resistant fiber is ultra-high molecular weight polyethylene.
  • the fiber may be a carbon fiber.
  • the matrix of the tie layer may be any suitable matrix. It may be selected from those listed in relation to the core layer.
  • the matrix is an epoxy resin, a polyurethane resin, a vinylester resin, a phenolic resin, a polyester resin, an acrylic-based resin or a mixture thereof.
  • the tie layer comprises fibers of ultra-high molecular weight polyethylene and a matrix.
  • the fibers of the tie layer are woven.
  • the core layer of a ballistic-resistant helmet shell is typically from 5 to 7 mm thick. Preferably, it is approximately 6 mm thick.
  • the ballistic-resistant helmet shell typically has an average thickness of from 6 to 10 mm. Typically the average thickness is from 7 to 9 mm. Preferably, the average thickness is about 7.5 mm.
  • the helmet shell of the present invention further comprises at least one layer of carbon fiber composite.
  • the at least one layer of carbon fiber composite is located close to or at the outer surface of the helmet shell, or the at least one layer of carbon fiber composite is located close to or at the inner surface of the helmet shell, or when there are at least two layers of carbon fiber composite, both.
  • a layer of carbon fiber composite comprises woven or non- woven, including unidirectionally oriented, carbon fibers and a binder.
  • Said binder is typically a liquid (co)polymer resin impregnated in between the fibers and optionally subsequently hardened. Hardening or curing may be done by any means known in the art, e.g.
  • the polymeric resin is an epoxy resin, a polyurethane resin, a vinylester resin, a phenolic resin, a polyester resin or a mixture thereof.
  • An advantage of including a carbon fiber composite is that it gives a higher structural rigidity to the ballistic-resistant helmet shell, for example ear to ear stiffness. This means that a person wearing such helmet has a further improved side protection of e.g. his ears upon impact.
  • a helmet shell as described may have very good ballistic resistant properties in relation to its weight.
  • a helmet shell of the present invention can stop 9mm FMJ (full metal jacket) ammunition above 380 m/s; preferably above 400 m/s; more preferably above 420 m/s.
  • Such a helmet shell has a mass of less than 1300 g. Preferably it has a mass of less than 1200 g. More preferably, it has a mass of less than 1100 g.
  • the helmet shell may be of any suitable design.
  • it may be PASGT, MICH or other design known in the art.
  • the ballistic-resistant helmet shell is suitable for the modular integrated communications helmet (MICH) design.
  • MICH modular integrated communications helmet
  • it may be suitable for a MICH design modified for Asian head shape. Such modification is known in the art and involves a higher left-right:front-back distance ratio than standard MICH design.
  • a particularly low weight design is the MICH high-cut design. This typically has a mass of from 500 to 650 g; more preferably from 550 to 600 g.
  • Helmet shells typically are produced in small, medium and large sizes. References herein are preferably to medium size helmet shells.
  • a large helmet shell may be approximately 3, 5, 7 or even 10% larger.
  • a small helmet shell may be approximately 3, 5, 7 or even 10% smaller.
  • a helmet shell according to the present invention may be produced by:
  • the stack is typically placed in an open mould, consisting of a female and a male part, and subsequently the stack is clamped to one part of the mould, generally the female part.
  • This clamping is done through a so-called control member and is done in such a way that the stack is fixed in its position towards the said female mould part, but that the stack can still slip and move during the closing of the mould, i.e. when moving of the male part into the female mould part.
  • This clamping through the control member may suitably be done by pressing the stack at its outer regions against the female mould part.
  • the force with which the control member is clamped to one part of the mould preferably ranges between 50 and 5000 N, more preferably between 100 and 3000 N and can be optimized by a skilled person through some routine experimentation.
  • the mould is closed e.g. by moving the male part into the female mould part and the stack is consolidated under temperature and pressure into the shape of a helmet shell.
  • the consolidated stack is preferably cooled in the mould, still under pressure.
  • the mould can be opened and the consolidated stack is released from the mould.
  • the consolidated stack may further be processed through known mechanical techniques as sawing, grinding, drilling to the desired final dimensions.
  • the temperature during consolidation is chosen below the
  • the ballistic resistant fiber loses its high mechanical properties due to e.g. melting.
  • a mould temperature below 135 °C is generally used. The minimum temperature generally is chosen such that a reasonable speed of
  • °C is a suitable lower temperature limit, preferably this lower limit is at least 75 °C, more preferably at least 95 °C, most preferably at least 115 °C.
  • the pressure during consolidating is typically at least 7 MPa, more preferably at least 10 MPa, even more preferably at least 15 MPa and most preferably at least 20 MPa. In this way a better ballistic resistant performance is achieved.
  • this consolidating may be preceded by a low pressure pre-shaping step. Pressure during this pre-shaping step may vary between 2 and 5 MPa. After pre shaping and before consolidating the mould may be opened and the occurrence of blisters may be verified, which may subsequently be removed by e.g. piercing with a sharp object. Other options to prevent blisters include degassing during moulding or use of vacuum.
  • the optimum time for consolidation generally ranges from 5 to 120 minutes, depending on conditions such as temperature, pressure and part thickness and can be verified through routine experimentation.
  • the consolidation time is less than 90 minutes; and preferably less than 60 minutes.
  • tie layer may be added to the stack prior to consolidation.
  • the tie layer may be added to the consolidated stack and then further consolidated.
  • the coating is then applied, typically by spraying, as described above.
  • FIG. 1 illustrates a MICH type helmet design; which is the preferred helmet design for the present invention.
  • FIG. 2 illustrates a cross section of a preferred embodiment of the present invention.
  • the helmet shell design comprises a core layer (4) comprising a consolidated stack of layers of uni-directionally aligned ballistic-resistant fibers and a binder; coating layers comprising polyurea on the external surface (2) and on the internal surface (6); tie layers (3) and (5) located respectively between coating layer (2) and core layer (4) between coating layer (6) and core layer (4).
  • Intrinsic Viscosity is determined according to method ASTM D1601 at 135°C in decalin, the dissolution time being 16 hours, with DBPC as anti oxidant in an amount of 2 g/l solution, by extrapolating the viscosity as measured at different concentrations to zero concentration.
  • VSTOP against 9mm FMJ was carried out in accordance with NIJ 0106.01 level IIA & level II.
  • the helmet shell was fitted with accessories, including straps, padding and external equipment fittings and subjected to ballistic testing.
  • Back face deformation was measured according to NIJ0106.01 with a 9 mm 124 grain FMJ threat shot at 427-445 m/s against a clay head form.
  • the helmet shells were equipped with pads and a strap system.
  • the back face signature was defined as the remaining indentation of the clay.
  • V50 against 1.1 g (17 grain) FSP was determined on a 53 x 53 cm panel at different speeds to a maximum of 6 shots per panel. The final V50 was determined as the average of the three highest speeds with a stop, and the three lowest speeds yielding a perforation.
  • Ear-to-ear compression test was performed based on the US helmet rigidity test, especially the ACH (Advanced combat Helmet) purchase description. In details the shells have been tested in accordance with ASTM Test Method D-76, except that the machine was used in the compression mode per the following.
  • a square shaped stack with dimensions of 53 cm x 53 cm was formed of 70 layers of unidirectionally aligned ultra-high molecular weight polyethylene fiber in a 17 wt% polyurethane matrix, whereby the fiber direction in each mono-layer is at an angle of 90° with respect to an adjacent monolayer.
  • the material was 35 layers of HB210 from DSM Dyneema, Geleen, the Netherlands.
  • the areal density of the stack was 4.8 kg/m 2 .
  • the stack was clamped in position over the female part of a helmet mould. Areal density is measured with respect to the outside surface of the helmet shell.
  • a clamping pressure of about 2000 N was applied to the control member such that the stack was flat and fixed in its position towards the said female mould part, but that the stack could still slip and move during the closing of the mould.
  • the mould was closed by inserting the male part into the female part of the mould whereby the flat stack slowly was positioned against the female mould surface. This closing was done in a time span of 5 minutes in order to have a temperature transfer from the male and female mould part to the stack.
  • the temperature of the mould was about 130°C.
  • the applied pressure was 2 MPa and the stack was retained in the mould until the temperature at the centre of the stack was 130°C.
  • the system was degassed 3 times while at 2 MPa and left for 5 minutes.
  • the pressure was increased to a compressive pressure of about 25 MPa, and the stack was kept under this pressure for 15 minutes at 130°C.
  • the stack was cooled to a temperature of 50°C over a period of 30 minutes at the same compressive pressure.
  • the mould was opened and debris was cut from the helmet to obtain a smooth helmet edge.
  • the resulting helmet shell was coated by hand with Paxcon ® polyurea coating from Line-X ® , Huntsville, Alabama, USA and allowed to dry.
  • the resulting helmet shell was weighed, and average thickness was measured as described above, using a non-destructive modified vernier caliper system.
  • the helmet accessories were added and VSTOP and BFD were measured against 9mm FMJ according to NIJ 0106.01 as described above. Results are shown in Table 1.
  • Example 1 was repeated, except that the areal density of the stack was 5.5 kg/m 2 ; the stack was pressed between flat mold parts to yield a flat panel; and the panel was coated by hand with 0.5 mm Paxcon ® polyurea coating on each side. The panel was shot with 1.1 g (17 grain) FSP and V 50 was determined.
  • Example 2 was repeated except that no coating was applied.
  • Example 2 was repeated, except that a panel was produced as follows: A square shaped stack with dimensions of 53 cm x 53 cm and having an areal density of 7.0 kg/m 2 was formed of unidirectionally aligned ultra-high molecular weight polyethylene fiber sheets. The sheets each comprised 4 layers, each layer comprising unidirectionally aligned fibers of UHMWPE embedded in a matrix of 17% of a polyurethane resin, and layered in the configuration of fiber direction 0 90 0 90°. The material was HB26 from DSM Dyneema, Heerlen, Netherlands.
  • the stack was pressed, coated and shot in the same way as for
  • Example 3 was repeated except that no coating was applied.
  • Example 3 further helmet shells were produced by repetition of Example 1.
  • the inner and outer face of two of the resulting helmet shells (4-1 and 4-2) were coated by hand with Paxcon ® polyurea coating from Line-X ® , Huntsville, Alabama, USA and allowed to dry.
  • One shell (4-comp) was retained uncoated.
  • the coated helmet shells were weighed, and average thicknesses of the shells and the applied coatings were measured and respectively calculated.
  • the Helmets were subjected to an ear-to-ear compression test as described further above. Helmet shell properties and results are shown in Table 3.
  • a polyurea coating of 0.5 mm on the outer and inner side of the shell is able to reduce the ear-to-ear deformation by more than 55%.
  • Increasing the inner coating to 1.0 mm thickness improves the rigidity by a total 85%. Such substantial rigidity improvement is not expected considering the thickness of the coating and the mechanical properties of polyurea.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Helmets And Other Head Coverings (AREA)
  • Laminated Bodies (AREA)

Abstract

La présente invention se rapporte à une coque de casque pare-balles qui comprend : a. une couche centrale, laquelle couche centrale comprend une pile consolidée de couches de fibres pare-balles alignées de manière unidirectionnelle et un liant ; b. une couche de revêtement sur la surface externe de la couche centrale ; caractérisée en ce que ladite couche de revêtement comprend une polyrésine et présente une épaisseur comprise entre 0,3 et 4 mm ; et à un casque pare-balles comprenant une telle coque.
PCT/EP2019/085590 2018-12-21 2019-12-17 Coque de casque pare-balles WO2020127220A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SG10201811532V 2018-12-21
SG10201811532VA SG10201811532VA (en) 2018-12-21 2018-12-21 Ballistic-resistant helmet shell

Publications (1)

Publication Number Publication Date
WO2020127220A1 true WO2020127220A1 (fr) 2020-06-25

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KR (1) KR20200001473U (fr)
CN (1) CN212988153U (fr)
SG (1) SG10201811532VA (fr)
TW (1) TWM602203U (fr)
WO (1) WO2020127220A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114001591A (zh) * 2021-10-22 2022-02-01 江西长江化工有限责任公司 一种多层防弹头盔结构及其成型方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0504954A1 (fr) 1991-02-18 1992-09-23 Dsm N.V. Feuille microporeuse en polyéthylène et procédé pour sa fabrication
WO2007107359A1 (fr) 2006-03-21 2007-09-27 Dsm Ip Assets B.V. Procede de fabrication d'une piece mise en forme et piece mise en forme pouvant etre obtenue par ledit procede
WO2009085591A2 (fr) * 2007-12-20 2009-07-09 Honeywell International Inc. Casques pour la protection contre les balles d'arme à feu
US20160076854A1 (en) * 2014-04-04 2016-03-17 E I Du Pont De Nemours And Company Blast and ballistic improvement in helmets
TW201825857A (zh) 2016-12-21 2018-07-16 荷蘭商帝斯曼知識產權資產管理有限公司 防彈頭盔殼體
CN107144173B (zh) * 2017-05-12 2018-11-27 沈阳际华三五四七特种装具有限公司 一种防弹头盔的制备方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0504954A1 (fr) 1991-02-18 1992-09-23 Dsm N.V. Feuille microporeuse en polyéthylène et procédé pour sa fabrication
WO2007107359A1 (fr) 2006-03-21 2007-09-27 Dsm Ip Assets B.V. Procede de fabrication d'une piece mise en forme et piece mise en forme pouvant etre obtenue par ledit procede
WO2009085591A2 (fr) * 2007-12-20 2009-07-09 Honeywell International Inc. Casques pour la protection contre les balles d'arme à feu
US20160076854A1 (en) * 2014-04-04 2016-03-17 E I Du Pont De Nemours And Company Blast and ballistic improvement in helmets
TW201825857A (zh) 2016-12-21 2018-07-16 荷蘭商帝斯曼知識產權資產管理有限公司 防彈頭盔殼體
CN107144173B (zh) * 2017-05-12 2018-11-27 沈阳际华三五四七特种装具有限公司 一种防弹头盔的制备方法

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SG10201811532VA (en) 2020-07-29
CN212988153U (zh) 2021-04-16
TWM602203U (zh) 2020-10-01

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