FR2691156A1 - High density composite plastic material - includes mineral-filled polyamide or polyester resin and is useful in forming balls for use in firing range - Google Patents

High density composite plastic material - includes mineral-filled polyamide or polyester resin and is useful in forming balls for use in firing range Download PDF

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Publication number
FR2691156A1
FR2691156A1 FR9205796A FR9205796A FR2691156A1 FR 2691156 A1 FR2691156 A1 FR 2691156A1 FR 9205796 A FR9205796 A FR 9205796A FR 9205796 A FR9205796 A FR 9205796A FR 2691156 A1 FR2691156 A1 FR 2691156A1
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FR
France
Prior art keywords
plastic material
polyester resin
balls
mineral
particles
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Withdrawn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
FR9205796A
Other languages
French (fr)
Inventor
Ranvier Serge
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.)
MUNITIONS STE FRANCAISE
SFM DEFENSE
Original Assignee
MUNITIONS STE FRANCAISE
SFM DEFENSE
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 MUNITIONS STE FRANCAISE, SFM DEFENSE filed Critical MUNITIONS STE FRANCAISE
Priority to FR9205796A priority Critical patent/FR2691156A1/en
Publication of FR2691156A1 publication Critical patent/FR2691156A1/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/72—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material
    • F42B12/74—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material of the core or solid body
    • F42B12/745—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material of the core or solid body the core being made of plastics; Compounds or blends of plastics and other materials, e.g. fillers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/08—Metals
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/16—Solid spheres
    • C08K7/18—Solid spheres inorganic
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B8/00—Practice or training ammunition
    • F42B8/12—Projectiles or missiles

Abstract

A plastic composite material which is machineable and can be cold-formed comprises: a polyamide or polyester with mineral particles as a filler; metallic particles; and an anti-shock additive. The content of mineral and metallic particles is such taht the density of the material is at least 3.5. The material contains at least 50% of mineral particles and brass or bronze balls. The anti-shock component is a paraloid material such as butadiene-styrene methacrylate. Compsns. are claimed as follows: Polyester resin-filled with 60-65% of mineral particles 17-25%; Paraloid 1-18%; and brass or bronze balls 55-85%. USE/ADVANTAGE - The material is mostly used in the manufacture of balls for use in practice firing ranges; it can also be used to form moulded articles such as lamp bases, vases, cups, etc.. The high density of the balls formed and their resistance to thermal and mechanical stresses enable their use in automic weapons. The presence of the anti-shock component enables successful cold-working and maching operation without fracture of the material.

Description

La présente invention concerne une matière plastique injectable, formable à froid, usinable et découpable, présentant une densité supérieure à 3,5. The present invention relates to an injectable plastic material, cold formable, machinable and cutable, having a density greater than 3.5.

On connaît des matières plastiques renfermant des charges minérales ayant pour effet d'augmenter leur densité. Plastics containing mineral fillers are known which have the effect of increasing their density.

Ainsi on connaît une résine polyester présentant jusqu'à 65% en poids de charges minérales. Thus a polyester resin is known having up to 65% by weight of mineral fillers.

Cette résine polyester présente ainsi une densité égale à 2,4. Le but principal de ces charges minérales est d'en abaisser le coût avant d'en augmenter la densité.This polyester resin thus has a density equal to 2.4. The main purpose of these mineral fillers is to lower their cost before increasing their density.

Dans certaines applications, il est souhaitable de disposer d'une matière plastique ayant une densité supérieure à 3,5. In certain applications, it is desirable to have a plastic material having a density greater than 3.5.

On connaît notamment des balles en matière plastique destinées aux tirs d'exercice. Ces balles, dans le cas d'une utilisation en arme automatique, doivent, à volume constant, dépasser une densité de 3,5 pouvant aller jusqu'à 5. Plastic balls are known in particular intended for exercise shots. These bullets, in the case of use as an automatic weapon, must, at constant volume, exceed a density of 3.5 which can go up to 5.

Pour augmenter la densité de la matière plastique chargée de particules minérales, on peut penser qu'il suffit d'y ajouter des particules d'un métal suffisamment lourd tel que le bronze ou le laiton, le plomb n'étant pas souhaité pour son bas point de fusion et pour des raisons de toxicité. To increase the density of the plastic loaded with mineral particles, we can think that it is enough to add particles of a sufficiently heavy metal such as bronze or brass, lead is not desired for its bottom melting point and for reasons of toxicity.

Or plus on procède à des ajouts de métal lourd plus les produits fabriqués deviennent fragiles et moins ils supportent les contraintes mécaniques qu'ils sont amenés à subir, par exemple les balles s'ébrèchent à la prise de rayure du canon. De plus, cette matière plastique n'est plus injectable, formable à froid, usinable et découpable. However, the more heavy metal is added, the more the manufactured products become fragile and the less they support the mechanical stresses that they are brought to undergo, for example the bullets are chipped when the barrel is scratched. In addition, this plastic material is no longer injectable, cold formable, machinable and cutable.

D'autres applications sont basées sur le critère de densité élevée obtenue pour l'utilisation de telles matières plastiques. Other applications are based on the high density criterion obtained for the use of such plastics.

Dans ces applications, les objets réalisés en matière plastique de haute densité donc chargée de particules de métal lourd, doivent également être suffisamment résistants, pour ne pas se briser facilement. In these applications, objects made of high density plastic material therefore loaded with heavy metal particles, must also be strong enough, so as not to break easily.

Le simple ajout de particules métalliques à une matière plastique telle que le polyamide ou le polyester ne permet pas d'atteindre les propriétés mécaniques recherchées. The simple addition of metallic particles to a plastic material such as polyamide or polyester does not make it possible to achieve the desired mechanical properties.

Le but de la présente invention est de proposer une matière plastique de haute densité qui soit à la fois injectable, formable à froid, usinable et découpable. The object of the present invention is to provide a high density plastic which is both injectable, cold formable, machinable and cutable.

Suivant l'invention, cette matière plastique est caractérisée en ce qu'elle renferme les constituants de base suivants
- résine polyamide ou polyester chargée de particules minérales,
- particules métalliques,
- adjuvant anti-choc,
la teneur en particules minérales et métalliques étant suffisante pour que la densité de la matière plastique soit au moins égale à 3,5.According to the invention, this plastic material is characterized in that it contains the following basic constituents
- polyamide or polyester resin loaded with mineral particles,
- metallic particles,
- anti-shock adjuvant,
the content of mineral and metallic particles being sufficient for the density of the plastic material to be at least equal to 3.5.

Cette matière plastique présente une densité au moins égale à 3,5 grâce à une proportion importante de particules minérales et de particules métalliques. This plastic material has a density at least equal to 3.5 thanks to a large proportion of mineral particles and metallic particles.

Grâce à la présence de cet adjuvant, la matière plastique est à la fois dense et résistante. De plus, elle est injectable, formable à froid, usinable et découpable. Thanks to the presence of this adjuvant, the plastic is both dense and resistant. In addition, it is injectable, cold formable, machinable and cutable.

Elle peut ainsi convenir dans toutes les applications exigeant une matière dense, et dont l'obtention par moulage présente un intérêt économique. It can thus be suitable in all applications requiring a dense material, and the production of which by molding is of economic interest.

Ainsi, la matière plastique conforme à l'invention peut être utilisée pour réaliser des objets tels que pieds de lampe, statues, coupes, vases, etc.Thus, the plastic material according to the invention can be used to make objects such as lamp bases, statues, cups, vases, etc.

L'une des applications préférées de la présente invention est la réalisation de balles en matière plastique pour les tirs d'exercice au moyen d'armes automatiques. One of the preferred applications of the present invention is the production of plastic balls for exercise shots by means of automatic weapons.

Grâce à leur densité supérieure à 3,5, ces balles peuvent effectivement être tirées au moyen d'armes automatiques. Thanks to their density greater than 3.5, these bullets can actually be fired using automatic weapons.

La présence de l'adjuvant anti-choc dans la matière plastique, permet à la balle de résister aux contraintes thermiques et mécaniques engendrées lors du tir à l'intérieur du canon de l'arme. The presence of the anti-shock adjuvant in the plastic allows the bullet to resist the thermal and mechanical stresses generated when firing inside the barrel of the weapon.

De préférence, la matière plastique conforme à l'invention renferme une résine polyester thermoplastique comportant au moins 50% en poids de particules minérales, telles que du talc. Preferably, the plastic material according to the invention contains a thermoplastic polyester resin comprising at least 50% by weight of mineral particles, such as talc.

Les particules métalliques sont de préférence des billes de laiton ou de bronze. The metal particles are preferably brass or bronze balls.

La matière plastique conforme à l'invention renferme de préférence en tant qu'adjuvant anti-choc un paraloïde, tel que du méthacrylate butadiène styrène (MBS). The plastic according to the invention preferably contains as an anti-shock adjuvant a paraloid, such as methacrylate butadiene styrene (MBS).

La composition pondérale préférée de la matière plastique est la suivante - résine polyester chargée de 60 à 65% en poids
de particules minérales : 17 à 25% - paraloïde : 1 à 12% - billes de bronze ou laiton : 55 à 85%
A titre d'exemple, la composition pondérale de la matière plastique est la suivante - résine polyester chargée de 65% en poids
de talc 22% - MBS (méthacrylate butadiène styrène) : 3% - billes de bronze de diamètre moyen égal à
0,15 mm 75%
La densité de cette matière est égale à 4,8.The preferred weight composition of the plastic is as follows - polyester resin filled with 60 to 65% by weight
of mineral particles: 17 to 25% - paraloid: 1 to 12% - bronze or brass beads: 55 to 85%
By way of example, the weight composition of the plastic is as follows - polyester resin loaded with 65% by weight
talc 22% - MBS (butadiene styrene methacrylate): 3% - bronze balls with an average diameter equal to
0.15 mm 75%
The density of this material is equal to 4.8.

La matière plastique répondant à la composition ci-dessus peut être facilement injectée dans des moules pour réaliser des objets divers qui peuvent ensuite être usinés ou découpés. The plastic material corresponding to the above composition can be easily injected into molds to produce various objects which can then be machined or cut.

La matière plastique peut également être extrudée sous forme de tiges qui peuvent être découpées en petits tronçons qu'il suffit ensuite de presser à froid sous forme de balles utilisables pour le tir d'exercice. The plastic material can also be extruded in the form of rods which can be cut into small sections which then need only be cold pressed in the form of balls which can be used for exercise shooting.

Bien entendu, l'invention n'est pas limitée aux exemples qui viennent d'être décrits et on peut apporter à ceux-ci de nombreuses modifications sans sortir du cadre de l'invention.  Of course, the invention is not limited to the examples which have just been described and many modifications can be made to them without departing from the scope of the invention.

Claims (8)

REVENDICATIONS 1. Matière plastique injectable, formable à froid, usinable et découpable, caractérisée en ce qu'elle renferme les constituants de base suivants 1. Injectable plastic material, cold formable, machinable and cutable, characterized in that it contains the following basic constituents - résine polyamide ou polyester chargée de particules minérales, - polyamide or polyester resin loaded with mineral particles, - particules métalliques, - metallic particles, - adjuvant anti-choc, - anti-shock adjuvant, la teneur en particules minérales et métalliques étant suffisante pour que la densité de la matière plastique soit au moins égale à 3,5. the content of mineral and metallic particles being sufficient for the density of the plastic material to be at least equal to 3.5. 2. Matière plastique conforme à la revendication 1, caractérisée en ce qu'elle renferme une résine polyester thermoplastique renfermant au moins 50% en poids de particules minérales. 2. Plastic material according to claim 1, characterized in that it contains a thermoplastic polyester resin containing at least 50% by weight of mineral particles. 3. Matière plastique conforme à l'une des revendications 1 ou 2, caractérisée en ce qu'elle renferme des billes de laiton ou de bronze. 3. Plastic material according to one of claims 1 or 2, characterized in that it contains brass or bronze balls. 4. Matière plastique conforme à l'une des revendications 1 à 3, caractérisée en ce qu'elle renferme en tant qu'adjuvant anti-choc, un paranoïde.  4. Plastic material according to one of claims 1 to 3, characterized in that it contains as an anti-shock adjuvant, a paranoid. 5. Matière plastique conforme à la revendication 4, caractérisée en ce que le paraloïde est du méthacrylate butadiène styrène. 5. Plastic material according to claim 4, characterized in that the paraloid is butadiene styrene methacrylate. 6. Matière plastique conforme à l'une des revendications 1 à 5, caractérisée en ce qu'elle présente la composition pondérale suivante - résine polyester chargée de 60 à 65% en 6. Plastic material according to one of claims 1 to 5, characterized in that it has the following weight composition - polyester resin loaded with 60 to 65% by poids de particules minérales : 17 à 25% - paraloïde : 1 à 12% - billes de bronze ou laiton : 55 à 85%. weight of mineral particles: 17 to 25% - paraloid: 1 to 12% - bronze or brass beads: 55 to 85%. 7. Matière plastique conforme à la revendication 6, caractérisée en ce qu'elle présente la composition pondérale suivante - résine polyester chargée de 65% en poids 7. Plastic material according to claim 6, characterized in that it has the following composition by weight - polyester resin loaded with 65% by weight de talc : 22% - MBS (méthacrylate butadiène styrène) : 3% - billes de bronze de diamètre moyen égal talc: 22% - MBS (butadiene styrene methacrylate): 3% - bronze balls of equal average diameter à 0,15 mm : 75% la densité de cette matière étant égale à 4,8. at 0.15 mm: 75% the density of this material being equal to 4.8. 8. Balle ou noyau de balle en matière plastique, pour tirs d'exercice, caractérisée en ce que la matière plastique de cette balle est conforme à l'une des revendications 1 à 7.  8. Ball or bullet core made of plastic material, for exercise shots, characterized in that the plastic material of this ball conforms to one of claims 1 to 7.
FR9205796A 1992-05-13 1992-05-13 High density composite plastic material - includes mineral-filled polyamide or polyester resin and is useful in forming balls for use in firing range Withdrawn FR2691156A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9205796A FR2691156A1 (en) 1992-05-13 1992-05-13 High density composite plastic material - includes mineral-filled polyamide or polyester resin and is useful in forming balls for use in firing range

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9205796A FR2691156A1 (en) 1992-05-13 1992-05-13 High density composite plastic material - includes mineral-filled polyamide or polyester resin and is useful in forming balls for use in firing range

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FR2691156A1 true FR2691156A1 (en) 1993-11-19

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0752571A1 (en) * 1995-07-07 1997-01-08 Giat Industries Short trajectory projectile
WO1997004020A1 (en) * 1995-07-24 1997-02-06 A. Schulman Gmbh Polymer-based composition for the manufacture of non-magnetic metal-containing moulded articles
WO1997038282A1 (en) * 1996-04-03 1997-10-16 Cesaroni Technology Inc. Lead-free bullet
US7607394B2 (en) 2001-04-24 2009-10-27 Anthony Joseph Cesaroni Lead-free projectiles

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0096617A1 (en) * 1982-06-11 1983-12-21 Societe Francaise De Munitions (S.F.M.) Plastics projectile
EP0141107A2 (en) * 1983-10-24 1985-05-15 AlliedSignal Inc. Glass reinforced polyamide composition containing acrylic core/shell polymer
JPS63256644A (en) * 1987-04-14 1988-10-24 Kishimoto Sangyo Kk Thermoplastic polyester resin filled with metal or the like excellent in dimensional stability and its production
WO1988009476A1 (en) * 1987-05-21 1988-12-01 Sprintvale Limited Training projectile of plastics material
EP0334764A1 (en) * 1988-01-20 1989-09-27 GIAT Industries Plastics projectile for short-range ammunition, and manufacturing method therefor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0096617A1 (en) * 1982-06-11 1983-12-21 Societe Francaise De Munitions (S.F.M.) Plastics projectile
EP0141107A2 (en) * 1983-10-24 1985-05-15 AlliedSignal Inc. Glass reinforced polyamide composition containing acrylic core/shell polymer
JPS63256644A (en) * 1987-04-14 1988-10-24 Kishimoto Sangyo Kk Thermoplastic polyester resin filled with metal or the like excellent in dimensional stability and its production
WO1988009476A1 (en) * 1987-05-21 1988-12-01 Sprintvale Limited Training projectile of plastics material
EP0334764A1 (en) * 1988-01-20 1989-09-27 GIAT Industries Plastics projectile for short-range ammunition, and manufacturing method therefor

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
DATABASE WPIL Derwent Publications Ltd., London, GB; AN 88-342985 (48) & JP-A-63 256 644 (KISHIMOTO SANGYO KK) *
PATENT ABSTRACTS OF JAPAN vol. 14, no. 197 (C-712)(4140) 23 Avril 1990 & JP-A-20 38 448 ( MITSUBISHI RAYON CO LTD ) 7 Février 1990 *
PATENT ABSTRACTS OF JAPAN vol. 14, no. 57 (C-684)(4000) 2 Février 1990 & JP-A-12 84 553 ( KANEBO LTD ) 15 Novembre 1989 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0752571A1 (en) * 1995-07-07 1997-01-08 Giat Industries Short trajectory projectile
FR2736426A1 (en) * 1995-07-07 1997-01-10 Giat Ind Sa PROJECTILE WITH SHORTCUT TRACK
WO1997004020A1 (en) * 1995-07-24 1997-02-06 A. Schulman Gmbh Polymer-based composition for the manufacture of non-magnetic metal-containing moulded articles
WO1997038282A1 (en) * 1996-04-03 1997-10-16 Cesaroni Technology Inc. Lead-free bullet
US7607394B2 (en) 2001-04-24 2009-10-27 Anthony Joseph Cesaroni Lead-free projectiles

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