EP0518330A2 - Masse pour piéger des projectiles - Google Patents

Masse pour piéger des projectiles Download PDF

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Publication number
EP0518330A2
EP0518330A2 EP92109853A EP92109853A EP0518330A2 EP 0518330 A2 EP0518330 A2 EP 0518330A2 EP 92109853 A EP92109853 A EP 92109853A EP 92109853 A EP92109853 A EP 92109853A EP 0518330 A2 EP0518330 A2 EP 0518330A2
Authority
EP
European Patent Office
Prior art keywords
trap according
projectile trap
resin
hydrogenated
projectile
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
Application number
EP92109853A
Other languages
German (de)
English (en)
Other versions
EP0518330B1 (fr
EP0518330B2 (fr
EP0518330A3 (en
Inventor
Hans-Jürgen c/o ROTTA GMBH Anstäth
Götz Dr. c/o ROTTA GMBH Rotta
Friedrich C/O Rotta Gmbh Bartsch
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.)
Rotta GmbH
Original Assignee
Rotta GmbH
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6433785&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0518330(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Rotta GmbH filed Critical Rotta GmbH
Publication of EP0518330A2 publication Critical patent/EP0518330A2/fr
Publication of EP0518330A3 publication Critical patent/EP0518330A3/de
Publication of EP0518330B1 publication Critical patent/EP0518330B1/fr
Application granted granted Critical
Publication of EP0518330B2 publication Critical patent/EP0518330B2/fr
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Expired - Lifetime legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41WEAPONS
    • F41JTARGETS; TARGET RANGES; BULLET CATCHERS
    • F41J13/00Bullet catchers

Definitions

  • the invention relates to a projectile trap which is suitable for collecting projectiles in shooting ranges.
  • Bullet traps are used to manufacture bullet traps in shooting ranges to destroy the kinetic energy of flying bullets upon impact.
  • Such bullet traps are manufactured, among other things, from thermoplastic materials.
  • DE-OS 1 578 238 describes a projectile trap composed of polyisobutylene alone or a mixture of polyisobutylene with butyl rubber or rubber-like substances.
  • the polyisobutylene has a molecular weight of 50,000 to 100,000.
  • DE-OS 38 39 000 describes a projectile trap in which, for example, thermoplastic polyethylene, polyvinyl chloride, polyvinyl ether, polybutylene, polyisobutylene, polyacrylic acid ester, methyl silicone or copolymers or mixtures thereof are used as the projectile mass.
  • the present invention is therefore based on the object of providing a projectile trap which has improved material properties and in which a health risk to the shooters is largely avoided.
  • a projectile trap which comprises thermoplastic organic polymers and certain resins which act as tackifiers in a certain proportion.
  • the present invention therefore relates to a projectile trap which can be obtained by melting at least one thermoplastic organic polymer and at least one synthetic resin with an average molecular weight of 200 to 3000 or at least one natural resin or a derivative thereof in a weight ratio from thermoplastic polymer to synthetic or natural resin 1:10 to 10: 1 mixed.
  • the bullet trap according to the invention shows a number of advantages over the known bullet trap.
  • it combines those properties in one product that could only be partially met with the known bullet traps depending on the plastic used. These properties are primarily excellent brittle fracture behavior penetration and penetration of projectiles, i.e. a lack of brittle fracture resistance, as well as high stability, which makes the material suitable for self-supporting bullet traps and an elasticity, which allows a significantly higher level of bombardment before the bullet trap has to be replaced, i.e. the service life is considerable elevated.
  • the projectile trap according to the invention catches projectiles without these being substantially destroyed.
  • the projectiles easily penetrate the surface of the bullet trap without the risk of ricochets or ricochets. Traces of any released pollutants are largely chemically and physically retained in the bullet trap. This results in improved health conditions in the vicinity of shooting ranges, which make use of the projectile trap according to the invention.
  • the bullet trap according to the invention is an impact-resistant, tough and flexible mass which shows a low surface tack.
  • the bullet trap described is liquid at temperatures above 150 ° C, so that the melt can be separated from the penetrated bullets by melting and sedimentation or sieving and can be reused.
  • Bullet trapping materials which have a viscosity of more than 5,000 mPas / 190 ° C. are particularly suitable according to the invention.
  • the viscosity of the bullet trap is preferably in the range from 5,500 to 15,000 mPas / 190 ° C.
  • the ratio of thermoplastic organic polymer to synthetic or natural resin is preferably 1: 2 to 2: 1.
  • thermoplastic polymers are polyolefins and in particular polypropylene and polyisobutylene. Atactic polypropylene is particularly preferred.
  • the polyolefins have a softening range from 120 to 160 ° C and a viscosity range from 8 to 150 Pas.
  • the polyisobutylene preferably has a molecular mass of at most 40,000.
  • thermoplastic organic polymers are polyethylene, atactic, syndiotactic or isotactic polypropylene, atactic or isotactic polybutene, polypentene, polyisobutene, isotactic or syndiotactic polybutadiene, poly-1-butene, polyisoprene, polyacrylates, polyvinyl ether, polyvinyl esters and copolymers thereof.
  • polymers can be used in particular as mixtures, both with one another and as a mixture of several polymers of the same type, but which have different molecular weights or different viscosities.
  • Synthetic resins which are suitable according to the invention are described, for example, in ULLMANNS Encyklopadie der Technische Chemie, 4th edition, volume 12, page 539 ff. Reference is hereby made to this disclosure.
  • Hydrocarbon resins in particular petroleum and terpene resins, are preferred.
  • Suitable hydrocarbon resins are refining hydrocarbons, in particular hydrogenated refining hydrocarbons, polycyclopentadiene and in particular hydrogenated polycyclopentadiene, aliphatic or aliphatic / aromatic hydrogenated hydrocarbon resins, and resins based on terpene and vinyl aromatics.
  • Resins of this type are commercially available, for example Escorez (from Exxon; hydrogenated cyclopentadiene resin M n ⁇ 500), Regalite (from Hercules), Eastotac (from Eastman), Arkon (from Arakawa), Wink Tack (from Goodyear) .
  • Suitable natural resins are also described in ULLMANN's Encyclopedia of Industrial Chemistry, 4th edition, volume 12, page 525 ff. Reference is hereby made to this disclosure.
  • Suitable natural resins are, in particular, those based on rosin (rosin ester, polymerized rosin, maleinate resins, etc.).
  • the average molecular weight of the resins used according to the invention is in the range from 200 to 3,000, preferably 300 to 2,000.
  • the resins can be used individually or preferably in mixtures.
  • a preferred mixture comprises hydrogenated refining hydrocarbons, hydrogenated polycyclopentadiene resins, hydrogenated hydrocarbon resins and resins based on terpene and vinyl aromatics. This mixture can be used in an amount of 60 to 30% by weight together with 40 to 70% by weight of one or more polyolefins. In this context it is particularly preferred to use a mixture of atactic polypropylene and polyisobutylene.
  • the projectile trap according to the invention can contain waxes, antioxidants, UV inhibitors, polymer stabilizers, dyes, pigments, fibers (for example glass or carbon fibers) and / or fillers as further constituents.
  • Suitable fillers are inorganic fillers such as carbonate fillers, talc, mica and kaolins.
  • organic fillers are preferably used, such as granulated or ground elastomers or Elastomer compounds with or without filler content, and ground or granulated thermosets or duromer compounds with or without filler content.
  • the organic fillers can come from reprocessed materials, for example car tires, and can partially replace the thermoplastic organic polymer (for example up to 20%).
  • Suitable pigments are thermally stable pigments, such as titanium dioxide or metal oxides for coloring.
  • the bullet traps according to the invention are produced by homogeneously mixing the individual components in the melt and then cooling the melt. Appropriately, the melt will be poured into suitable molds before cooling.
  • the projectile trapping materials according to the invention in particular projectile trapping materials containing filler and dye, can be used for the production of shooting range walls.
  • moldings obtained from the projectile trap according to the invention for example plates, are used in a layered arrangement, so that projectiles penetrate the layers one after the other.
  • the individual layers can be composed differently and have optimized functions with regard to coloring, brittle fracture, braking effect, etc.
  • the viscosities given relate to the viscosity at 190 ° C., measured with a rotary viscometer. Quantities are based on weight.
  • bullet trapping materials according to the invention were produced by melting the specified components at temperatures above 150 ° C. The melt can then be poured directly into the mold, which is suitable for producing, for example, a floor trap wall from plates.
  • 250 parts of refined hydrocarbons, hydrogenated, molar mass 250 - 500 100 parts of resins based on terpene and vinyl aromatics, 50 parts hydrogenated polycyclopentadiene, molecular weight 500 - 1800, 100 parts atactic polypropylene, visc. 8,000 mPas 150 parts atactic polypropylene, visc. 100,000 mPas 250 parts atactic polypropylene, visc. 60,000 mPas 100 parts polyisobutylene, visc. 5,000 mPas.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Developing Agents For Electrophotography (AREA)
EP92109853A 1991-06-12 1992-06-11 utilisation d'un mélange comme masse pour piéger des projectiles Expired - Lifetime EP0518330B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4119397A DE4119397A1 (de) 1991-06-12 1991-06-12 Geschossfangmasse
DE4119397 1991-06-12

Publications (4)

Publication Number Publication Date
EP0518330A2 true EP0518330A2 (fr) 1992-12-16
EP0518330A3 EP0518330A3 (en) 1993-07-07
EP0518330B1 EP0518330B1 (fr) 1996-01-10
EP0518330B2 EP0518330B2 (fr) 2001-11-21

Family

ID=6433785

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92109853A Expired - Lifetime EP0518330B2 (fr) 1991-06-12 1992-06-11 utilisation d'un mélange comme masse pour piéger des projectiles

Country Status (3)

Country Link
EP (1) EP0518330B2 (fr)
AT (1) ATE132965T1 (fr)
DE (2) DE4119397A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994027111A1 (fr) * 1993-05-18 1994-11-24 Scovati Italia S.R.L. Piege a projectiles
WO2008046534A1 (fr) * 2006-10-17 2008-04-24 Clariant Finance (Bvi) Limited Matériau de piège à balles ayant des propriétés améliorées d'arrêt des projectiles d'armes à feu

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19506716C2 (de) * 1994-03-05 1999-06-10 Akzo Nobel Nv Geschoßfangvorrichtung
DE4426834A1 (de) * 1994-03-22 1995-09-28 Linnhoff Maschinenbau Verfahren und Vorrichtung zur Gewinnung von Metallpartikeln, die in einem Kunststoff eingebettet sind, aus dem Kunststoff heraus oder zur Gewinnung eines Kunststoffes, in den Metallpartikel eingebettet sind, von den Metallpartikeln befreit oder zur Trennung eines von Metallpartikeln durchsetzten Kunststoffes in den Metallpartikelanteil und den Kunststoffanteil
DE9407238U1 (de) * 1994-04-30 1994-07-21 Gerd Bücheler Schießanlagen und Schießstandbau, 70376 Stuttgart Geschoßfangvorrichtung
DE19707462C1 (de) * 1997-02-25 1998-06-18 Bayerische Motoren Werke Ag Gepanzertes Kraftfahrzeug mit verstärkten Karosseriebauteilen
DE10330166A1 (de) * 2003-07-04 2005-02-03 Daimlerchrysler Ag Gepanzertes Fahrzeug
DE202005002672U1 (de) 2005-02-19 2005-05-19 Gerd Bücheler Schießanlagen und Schießstandbau Abbremsvorrichtung

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3247142A (en) 1961-12-22 1966-04-19 Eastman Kodak Co Hot melt compositions comprising polyethylene, hydrocarbon resin and acetylated monoglyceride
GB1044756A (en) 1963-09-04 1966-10-05 Du Pont Heat sealable adhesive composition
DE1594263A1 (de) 1965-03-10 1971-02-18 Sun Oil Co Heissschmelzklebstoff
DE1578238A1 (de) * 1967-02-27 1971-07-29 Chem Fab Gustav Drengwitz Kugelfangmasse
DE2053365C3 (de) 1970-10-30 1979-09-13 Chemische Werke Huels Ag, 4370 Marl Heiß-Schmelzbeschichtungsmassen
DE2826646A1 (de) * 1978-06-19 1980-01-03 Karlpeter Ing Grad Esser Geschossfang fuer schiessanlagen
DE3212781A1 (de) * 1982-04-06 1983-10-06 Gfl Sportstaettenbau Gmbh Kugelfang, insbesondere fuer solche schiessanlagen, die in geschlossenen raeumen angelegt sind
DE3442984A1 (de) * 1984-11-26 1986-05-28 Karl 5450 Neuwied Henseler Geschossfang fuer schiessanlagen
US4773653A (en) * 1987-01-20 1988-09-27 Linatex Corporation Of America Cover for ballistic target assembly
US4850596A (en) * 1987-12-21 1989-07-25 Olund William R Archery target
US4856791A (en) * 1988-09-01 1989-08-15 Linatex Corporation Of America Protective mat assembly and installation method therefor
DE3839000A1 (de) * 1988-11-18 1990-05-23 Sis Verwaltungsgesellschaft Fu Geschossfangvorrichtung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994027111A1 (fr) * 1993-05-18 1994-11-24 Scovati Italia S.R.L. Piege a projectiles
WO2008046534A1 (fr) * 2006-10-17 2008-04-24 Clariant Finance (Bvi) Limited Matériau de piège à balles ayant des propriétés améliorées d'arrêt des projectiles d'armes à feu

Also Published As

Publication number Publication date
DE59204979D1 (de) 1996-02-22
DE4119397A1 (de) 1992-12-17
ATE132965T1 (de) 1996-01-15
EP0518330B1 (fr) 1996-01-10
EP0518330B2 (fr) 2001-11-21
EP0518330A3 (en) 1993-07-07

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