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EP3442369A1 - Élément de protection corporelle - Google Patents

Élément de protection corporelle

Info

Publication number
EP3442369A1
EP3442369A1 EP17718716.8A EP17718716A EP3442369A1 EP 3442369 A1 EP3442369 A1 EP 3442369A1 EP 17718716 A EP17718716 A EP 17718716A EP 3442369 A1 EP3442369 A1 EP 3442369A1
Authority
EP
European Patent Office
Prior art keywords
protection element
damping
body protection
layer
damping layer
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.)
Withdrawn
Application number
EP17718716.8A
Other languages
German (de)
English (en)
Inventor
Gerhard Karall
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP3442369A1 publication Critical patent/EP3442369A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
    • A41D13/015—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches with shock-absorbing means
    • A41D13/0156—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches with shock-absorbing means having projecting patterns
    • 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
    • A42B3/12—Cushioning devices
    • A42B3/124—Cushioning devices with at least one corrugated or ribbed layer
    • 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
    • A41D31/28—Shock absorbing

Definitions

  • the invention relates to a body protection element with at least one damping layer and its use in protective helmets and protectors.
  • protectors which usually consists of a hard shell and a cushioning padding.
  • a body protection element of visco-elastic foam which is usually made on the basis of N / polyvinyl chloride, N / vinyl acetate / vinyl chloride copolymer, silicone blends, polyurethane and related plastics.
  • the body protection elements used must fulfill the protective functions required by EN 1621-2, measured via the "transmitted force", in order to be suitable for use in protectors.
  • the main disadvantage of these foams is their high thermal insulation, their rigidity at temperatures below 10 ° C, the required strength (for example, for Level 2 at least 18 mm) and the associated poor comfort. In particular, such protectors are unsuitable for wearing under ordinary everyday wear.
  • protective equipment for the head namely protective helmets, for example, when riding a motorcycle, skiing, cycling used, which also have at least one body protection element.
  • protective helmets are usually made of an outer shell and a damping part and optionally a comfort part.
  • test standard EN 1077 for ski helmets which regulates in detail the testing of such helmets for a corresponding certification.
  • the Head Injury Criterion (HIC) value is a criterion for assessing acceleration head injury, for example, in a vehicle accident. This dimensionless value allows, for example, a comparison of the occupant safety of different vehicle models. with a: resulting head acceleration in [g]
  • a good damping behavior (tan6> 0.5) can generally be set over a maximum temperature range of about 40 ° C. This is due to the character of the glass transition itself from brittle to visco-elastic.
  • AT 512 078 B1 describes a helmet shell with a plastic mesh and / or honeycomb calotte body, which consists of an acrylonitrile rubber and at least two organic polymers.
  • This substantially foam-like body protection element already has significant improvements in comparison to the body protection elements commonly used in the art, for example made of polystyrene.
  • the at least one damping layer has a plurality of damping body in the form of hollow body having a substantially circular, elliptical, triangular, quadrangular and / or polygonal cross-section, on a plate-shaped body are arranged.
  • the damping bodies have a circular cross section with a diameter of 4 mm to 20 mm, preferably 12 mm. This form of damping body is easy to manufacture and provides excellent damping properties.
  • the damping bodies have a height of 10 mm to 20 mm, preferably 13.5 mm, a wall thickness of 0.1 mm to 4 mm, preferably 1 mm and a mean distance from each other of 4.1 mm 20.1 mm, preferably 15 mm.
  • This geometric design of the damping layer is effective especially for eccentrically acting forces.
  • the substantially cylindrical damping body whose central center axes are aligned in the normal state substantially perpendicular to the plate-shaped base plate are compressed at substantially perpendicular to them acting force, while at off-center force their central central axes are tilted so that they are not equal to 90 ° Cut plate-shaped base plate. This shift causes an energy distribution, so that the punctually acting force is significantly reduced.
  • the at least one damping layer is made of a compounded plastic polymer, wherein the plastic polymer by means of a mixture of trans polynorbornene, which initially with at least one preferred aromatic process oil is prepared in a second step with at least one further polymer and / or resin in a ratio of 1: 0.1 to 1: 5, preferably 5: 3 is prepared.
  • trans polynorbornene In the preparation of the trans polynorbornene, this is first treated with a RAE process oil as plasticizer in a ratio of 1: 0.5 to 1: 3, preferred wise 1: 1 mixed.
  • the glass transition temperature of the trans-polyno-boron by means of the preferably aromatic process oil is adjusted to a value of about 15 ° C to 30 ° C, before this processed trans polynorbornene, the so-called "masterbatch", with the at least one further polymer and / or mixed resin and then vulcanized or crosslinked.
  • the glass transition temperature of the plastic polymer from which the damping layer according to the invention is produced is brought to the value in which a maximum of the damping behavior is achieved within a desired application temperature range ,
  • the at least one further polymer and / or resin has a softening point according to ASTM D 3461 of 0 ° C. to 130 ° C., preferably 80 ° C. to 85 ° C. to achieve the desired glass transition temperature with the maximum damping effect.
  • those polymers and / or resins which have the desired material-specific glass transition temperature and in combination with the prepared trans-polynorbornene in a corresponding concentration provide the required glass transition temperature between 15 ° C. and 65 ° C. are suitable for this purpose.
  • the body protection elements according to the invention must be adapted to the environmental conditions, in particular to the outside temperature. For example, some plastics lose their elasticity when the outside temperature is low, become brittle and can break more easily. A body protection element for example for ski helmets must therefore be able to withstand particular loads corresponding to the test standard at temperatures between -20 ° C and + 23 ° C.
  • a body protection element for this purpose, in which the at least one damping layer is made of a compounded plastic polymer, wherein the plastic polymer by means of a mixture of trans polynorbornene, which is first - as already described above - treated with at least one preferably aromatic process oil, in a second step with a rubber, preferably homo-butyl rubber in a ratio of 5: 1 to 1: 1, preferably 5: 2 is prepared.
  • a polymer polymer based on trans polynorbornenes having a glass transition temperature of 5 ° C to 25 ° C, preferably 15 ° C is obtained.
  • crosslinking methods for example by means of sulfur crosslinking, peroxide crosslinking, imide crosslinking or physical crosslinking, are used during the compounding for the production of the plastic polymer according to the invention. During this vulcanization, the shaping of the damping layer according to the invention takes place in correspondingly suitable tools.
  • the degree of crosslinking is increased and / or the addition of fillers, further polymers and / or resins is provided.
  • plastic polymer it may also be necessary to reduce the hardness and strength of the plastic polymer. In this case, this can be achieved by a lower degree of crosslinking, by the addition of process oils, other polymers and / or resins.
  • the body protection element according to the invention should also be stable against environmental influences.
  • UV stabilizers, antioxidants and other additives customary in polymer production are added to the compound polymer produced by the compounding during compounding.
  • the body protection element is made of two damping layers, wherein preferably a first damping layer of the first aforementioned plastic polymer and a second damping layer of the second plastic polymer are made.
  • These combined damping layers are in this case preferably arranged slidably with respect to one another, but may be adhesively bonded to one another at points, for example.
  • damping layers are made of plastic polymers with high visco-elasticity to achieve the required damping properties.
  • at least one outer layer is provided, which is formed in a development of the invention as a plastic film, preferably made of polyester.
  • films as an outer layer is already known, especially in bicycle helmets, these are usually made of polycarbonate, ABS, etc.
  • the polyester film used according to the invention is characterized, in contrast to the films used in the prior art, by a high impact strength, combined with a lower hardness for plastics, which makes this material particularly suitable for protection against penetration.
  • Such films are sold under the brand name AXPET.
  • the outer layer is particularly preferably glued to the at least one damping layer.
  • the body protection element according to the invention is particularly suitable for producing a protective helmet. It is characterized in particular by a low weight and excellent properties as required in the respective test standards.
  • an adjoining the at least one damping layer inner layer is provided, which consists of a foam, preferably acrylonitrile rubber in conjunction with two other organic polymers, in particular from the material group Polynorbornene, polyvinyl chloride, ethylene vinyl acetate, polyisoprenes, butyl and / or vinyl acetate.
  • a foam layer which was produced, for example, as described in AT 512.078 Bl, also has excellent damping properties.
  • such a foam adapts very well to the head, for example, which in turn increases the wearing comfort.
  • the body protection element according to the invention is used for producing a back protector, for example for motorcyclist protective clothing according to EN 1621.
  • a back protector for example for motorcyclist protective clothing according to EN 1621.
  • at least one textile reinforcement is subsequently provided on the outer layer and / or the at least one damping layer is again provided for increasing the wearing comfort.
  • FIG. 1 shows a cross section through a first embodiment of the body protection element according to the invention.
  • Fig. 2 is a schematic plan view of the damping layer of Fig. 1;
  • FIG. 3 shows a second embodiment of the body protection element according to the invention in a schematic cross-sectional view
  • FIG. 4 shows a third embodiment of the body protection element according to the invention in a schematic cross-sectional view.
  • the damping layer 110 has a plate-shaped basic body 111, on which hollow damping bodies 112 are arranged.
  • This damping body 112 are cylindrical in this embodiment and are entirely continuous, so formed as extensions of the base body 111 whose central center axes M intersect the surface plane of the base body 111 substantially perpendicular.
  • the damping body 112 in this case preferably have a height of 13.5 mm, a diameter of 12 mm and a wall thickness of 1.5 mm.
  • the distance between the central center axes M to each other is preferably 15 mm, wherein the damping body 112 are particularly preferably arranged in a hexagonal arrangement on the base body 111 (see Fig. 2).
  • a film is glued as the outer layer 120 on the side facing away from the damping bodies 112, which is preferably made of polyester, for example from AXPET ® from Covestro Deutschland AG.
  • the film thickness is in this embodiment of Invention 0.5 mm to 0.8 mm.
  • This outer layer 120 serves for the penetration protection as well as the positional stability of the damping layer 110. This construction is much lighter than conventional constructions due to the reduced material height.
  • FIGS. 1 and 2 The in the Figs. Body protection element 110 shown in FIGS. 1 and 2 is used in a first application in a ski helmet, the layer structure of which is shown in FIG.
  • the damping body 210 here consists of a damping layer 210 with a geometric structure as described above.
  • the damping layer 210 is in this case made of a compounded plastic polymer, which is mixed in a first step of trans polynorbornene and RAE process oil, usually in a mixing ratio of 1: 1 to a base polymer and then in a second step in a compounding with homo-butyl rubber in Ratio 5: 3 was made.
  • the glass transition temperature of the trans Polynorbornen was set to about 15 ° C.
  • This mixture was then vulcanized by conventional sulfur crosslinking and provided in a known manner with UV protection and ozone protection.
  • This damping layer 210 is particularly suitable for use at low outside temperatures.
  • an inner layer 230 is provided as a comfort layer with a thickness of 5 mm.
  • This inner layer 230 which is designed as a foam part, is hereby arranged loosely on the damping layer 210.
  • the body protection element 300 is used for the manufacture of a motorized helm, here two damping layers 310A, 310B are used.
  • the first cushioning layer 310A is hereby made of Norsorex NS, a trans-polynorbornene of the company Startech Advanced Materials GmbH with a RAE processol of the company H & R in the ratio 1: 1, which is subsequently mixed with an Inden-Cumaron resin Type C30 of the Rütgers Novares GmbH with a Softening Point (ASTM D 3461) is prepared from 80 ° C to 85 ° C in a ratio of 1: 0.6 by compounding as Plast. By adding known additives and by selecting the type and extent of crosslinking the required material properties can be adjusted.
  • the shaping of the first damping layer 310A takes place during vulcanization in a corresponding shaping tool.
  • the first damping layer 310A is used for damping, especially at higher outside temperatures above 15 ° C.
  • Their damping bodies 312A have a height of about 13 mm.
  • the second damping layer 310B corresponds in its material composition to the damping layer 210 of the first application example, wherein its damping bodies 312B also have a height of about 13 mm and an inner diameter of 12 mm, this second damping layer 310B having a higher elasticity and a lower rigidity than the first Has damping layer 310A.
  • Both damping layers 310A, 310B are each provided with a base film 313A, 313B which has a film thickness of 0.8 mm and is preferably made of polyester.
  • the respective damping bodies 312A, 312B are each spaced apart in a hexagonal arrangement by 20 mm, measured from their central center axes M-. Furthermore, the two damping layers 310A, 310B are preferably arranged slidingly relative to one another.
  • the second cushioning layer 310B is followed by an inner layer 330 of foam material having a thickness of 7 mm.
  • the outer layer 320 again acts a polyester film with a thickness of 0.8 mm, which adhered to the first damping layer 310A.
  • the function of the outer layer can also be taken over by a hitherto customary outer shell made of plastic (PUR, ABS, etc.) or by a fiber-reinforced shell construction (carbon fibers or glass fibers in an epoxy matrix, etc.).
  • a hitherto customary outer shell made of plastic (PUR, ABS, etc.) or by a fiber-reinforced shell construction (carbon fibers or glass fibers in an epoxy matrix, etc.).
  • the inner layer 330 can be made with a thickness of about 20 mm and cover the application Ambient (normal temperature) and low temperature. Here you can also work with two foam layers.
  • the body protection element according to the invention is not only suitable for damping in protective helmets, but can also be used in protectors.
  • at least one damping layer is optionally provided with at least one inner layer of foam and a corresponding outer layer.
  • a back protector according to the invention may also consist exclusively of a damping layer which is provided with textile supports.
  • a back protector with this structure fulfills the requirements of EN 1621-2: 2014, whereby comparative values can be obtained with a market product in the following Table 1:
  • the present invention is not limited to the above embodiments.
  • the shape of the damping layer may vary, as well as the combination of different damping layers with each other and with other additional layers such as hard shells, inner layers, in particular Helmkalotten example of EPS foam and the like may be provided.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

La présente invention concerne un élément de protection corporelle (100, 200, 300) comportant au moins une couche d'amortissement (110, 210, 310A, 310B), ladite couche d'amortisement (110, 210, 310A, 310B) comprenant une pluralité de corps d'amortissement (112, 312A, 312B) sous forme de corps creux à section transversale sensiblement ronde, elliptique, triangulaire, carrée et/ou polygonale, qui sont disposés sur un support en forme de plaque.
EP17718716.8A 2016-04-11 2017-04-11 Élément de protection corporelle Withdrawn EP3442369A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT502962016 2016-04-11
PCT/AT2017/060092 WO2017177251A1 (fr) 2016-04-11 2017-04-11 Élément de protection corporelle

Publications (1)

Publication Number Publication Date
EP3442369A1 true EP3442369A1 (fr) 2019-02-20

Family

ID=58605980

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17718716.8A Withdrawn EP3442369A1 (fr) 2016-04-11 2017-04-11 Élément de protection corporelle

Country Status (2)

Country Link
EP (1) EP3442369A1 (fr)
WO (1) WO2017177251A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT521460B1 (de) * 2018-10-01 2020-02-15 Karall Gerhard Funktionswäsche
WO2022150866A1 (fr) * 2021-01-18 2022-07-21 Gerhard Karall Élément protecteur

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060059606A1 (en) * 2004-09-22 2006-03-23 Xenith Athletics, Inc. Multilayer air-cushion shell with energy-absorbing layer for use in the construction of protective headgear
DE102007056616A1 (de) * 2007-11-23 2009-06-04 Uvex Sports Gmbh & Co. Kg Schutzhelm, insbesondere Motorradhelm
US8069498B2 (en) * 2009-06-02 2011-12-06 Kranos Ip Corporation Protective arrangement
TWI419792B (zh) * 2010-01-11 2013-12-21 Universal Trim Supply Co Ltd Gas cushion
ITVR20100130A1 (it) * 2010-06-28 2011-12-29 Dainese Spa Dispositivo di protezione ed articolo indossabile includente detto dispositivo di protezione
US9314062B2 (en) * 2010-10-06 2016-04-19 Cortex Armour Inc. Shock absorbing layer with independent elements, and protective helmet including same
AT512078B1 (de) 2011-11-09 2013-11-15 Karall Gerhard Ing Helmkalotte

Also Published As

Publication number Publication date
WO2017177251A1 (fr) 2017-10-19

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