EP0643930B1 - Individual protective equipment especially protective gloves - Google Patents
Individual protective equipment especially protective gloves Download PDFInfo
- Publication number
- EP0643930B1 EP0643930B1 EP94402090A EP94402090A EP0643930B1 EP 0643930 B1 EP0643930 B1 EP 0643930B1 EP 94402090 A EP94402090 A EP 94402090A EP 94402090 A EP94402090 A EP 94402090A EP 0643930 B1 EP0643930 B1 EP 0643930B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ceramic
- equipment according
- layer
- protective
- gloves
- 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.)
- Expired - Lifetime
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
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D19/00—Gloves
- A41D19/015—Protective gloves
- A41D19/01505—Protective gloves resistant to mechanical aggressions, e.g. cutting. piercing
-
- 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
- A41D31/24—Resistant to mechanical stress, e.g. pierce-proof
- A41D31/245—Resistant to mechanical stress, e.g. pierce-proof using layered materials
Definitions
- the invention relates to protective equipment.
- personal protective equipment including gloves for handling of finished products or during manufacturing.
- PVC rubber or plastics
- EP-A-0 213 756 describes the improvement of the barrier qualities of chemists' gloves, generally made of polyethylene, against solvents. Such improvement is achieved by means of a structure multilayer consisting of a metal barrier layer, for example in aluminum, sandwiched between an outer reinforcing layer made of plastic (polyester) and an internal layer which can be bonded to hot (polyethylene, polyester). The metal layer is internal, and the glove obtained does not withstand high temperatures.
- US-A-4,401,707 describes a D2 heat resistant composite fabric comprising a heat conducting intermediate layer, consisting especially aluminum, sandwiched between an outer layer and an inner layer having a surface reflecting radiant heat (for example an aluminum-coated fabric), spaces being provided between these different layers that are attached to each other in particular by means of staples.
- a heat conducting intermediate layer consisting especially aluminum
- an outer layer sandwiched between an outer layer and an inner layer having a surface reflecting radiant heat (for example an aluminum-coated fabric), spaces being provided between these different layers that are attached to each other in particular by means of staples.
- This structure is thick and does not seem not used in the manufacture of gloves.
- DE-A-37 37 299 describes a protective glove against high temperatures of an even more complex structure than that of composite fabric of US-A-4 401 707 not guaranteeing dexterity.
- the outer layer of this glove is a fabric of metallic threads, which does not provide resistance to needlestick injury.
- US-A-4,223,064 discloses protective clothing resistant to alkali metals such as liquid sodium.
- the structure consists of a laminate of several layers - of which a continuous sheet of nickel - riveted or stapled together other.
- EP-A-0 390 383 describes the spinning of ceramic fibers allowing the manufacture of ceramic fabrics.
- the invention overcomes these drawbacks by providing personal protective equipment, including protective gloves with coating protective ceramic and / or metallic exterior on a flexible textile substrate, or the like.
- the protective exterior coating may consist of a single layer of ceramic or metal, or any combination of several such layers, and especially preferably in a first layer metal covered with a second ceramic layer.
- the protective outer coating has was formed by hot spraying of ceramics or metals, in the form of powders, on substrates natural or synthetic textiles, technique for which we have several methods of production.
- the coating thickness can be adjusted by depending on the particular applications to which intended for the product, but too thick harms the flexibility of the final product. We will use in generally a thickness of 20 to 200 ⁇ m.
- Hot spray coatings are obtained by high-speed crushing of molten droplets on a substrate.
- the adhesion of the coating is obtained by a hanging mechanical.
- Substrate must withstand temperatures higher than 100 ° C without alterations of its physico-chemical characteristics
- protective gloves have been produced according to technique b).
- an Al 2 -O 3 - TiO 2 ceramic coating was deposited, one at a thickness of 100 ⁇ m and the other at a thickness of 150 ⁇ m.
- the invention is of course not limited to only protective gloves, and can be applied to any personal protective equipment for tall temperatures, which must also have good mechanical resistance.
Description
L'invention concerne des équipements de protection individuelle (EPI), et notamment des gants en vue de la manipulation de produits finis ou en cours de fabrication.The invention relates to protective equipment. personal protective equipment (PPE), including gloves for handling of finished products or during manufacturing.
Les équipements de protection individuelle, et notamment les gants utilisés pour manipuler des objets, industriels au non, sont à l'heure actuelle réalisés par enduction de caoutchouc ou de matières plastiques (PVC par exemple) sur un substrat textile souple. Les inconvénients principaux sont qu'ils ne fournissent pas une bonne préhension de produits humides ou lubrifiés, en raison d'une adhérence insuffisante, que l'agilité et la précision des mouvements de la main sont considérablement limitées, qu'ils ne sont pas satisfaisants lorsque les pièces sont a une température élevée et qu'ils présentent des risques de coupure et de piqûre importants. Personal protective equipment, and in particular the gloves used to handle objects, industrial, no, are currently produced by coating of rubber or plastics (PVC for example) on a flexible textile substrate. The main drawbacks are that they don't provide a good grip on wet or lubricated products, due to insufficient grip, that agility and the precision of the hand movements are considerably limited, that they are not satisfactory when parts are at a temperature high and that they present risks of cutting and important punctures.
EP-A-0 213 756 décrit l'amélioration des qualités-barrière des gants de chimistes, généralement constitués de polyéthylène, vis-à-vis des solvants. Une telle amélioration est obtenue au moyen d'une structure multicouches constituée d'une couche barrière métallique, par exemple en aluminium, prise en sandwich entre une couche externe de renforcement en matière plastique (polyester) et une couche interne solidarisable à chaud (polyéthylène, polyester). La couche métallique est interne, et le gant obtenu ne résiste pas à des températures élevées.EP-A-0 213 756 describes the improvement of the barrier qualities of chemists' gloves, generally made of polyethylene, against solvents. Such improvement is achieved by means of a structure multilayer consisting of a metal barrier layer, for example in aluminum, sandwiched between an outer reinforcing layer made of plastic (polyester) and an internal layer which can be bonded to hot (polyethylene, polyester). The metal layer is internal, and the glove obtained does not withstand high temperatures.
US-A-4 401 707 décrit un tissu composite D2 résistant à la chaleur comprenant une couche intermédiaire conductrice de chaleur, consistant notamment en aluminium, prise en sandwich entre une couche extérieure et une couche intérieure ayant une surface réfléchissant la chaleur radiante (par exemple un tissu revêtu d'aluminium), des espaces étant ménagés entre ces différentes couches qui sont attachées les unes aux autres notamment au moyen d'agrafes. Cette structure est épaisse et ne semble pas utilisée dans la fabrication de gants.US-A-4,401,707 describes a D2 heat resistant composite fabric comprising a heat conducting intermediate layer, consisting especially aluminum, sandwiched between an outer layer and an inner layer having a surface reflecting radiant heat (for example an aluminum-coated fabric), spaces being provided between these different layers that are attached to each other in particular by means of staples. This structure is thick and does not seem not used in the manufacture of gloves.
DE-A-37 37 299 décrit un gant de protection vis-à-vis des températures élevées d'une structure plus complexe encore que celle du tissu composite de US-A-4 401 707 ne garantissant pas de dextérité. La couche externe de ce gant est un tissu de fils métalliques, qui n'assure une résistance à la piqûre par des aiguilles.DE-A-37 37 299 describes a protective glove against high temperatures of an even more complex structure than that of composite fabric of US-A-4 401 707 not guaranteeing dexterity. The outer layer of this glove is a fabric of metallic threads, which does not provide resistance to needlestick injury.
US-A-4 223 064 décrit un vêtement de protection résistant aux métaux alcalins tels que le sodium liquide. Comme dans le cas de US-A-4 401 707, la structure consiste en un stratifié de plusieurs couches - dont une feuille continue de nickel - rivetées ou agrafées les unes aux autres.US-A-4,223,064 discloses protective clothing resistant to alkali metals such as liquid sodium. As in the case of US-A-4,401,707, the structure consists of a laminate of several layers - of which a continuous sheet of nickel - riveted or stapled together other.
EP-A-0 390 383 décrit le filage de fibres céramiques permettant la fabrication de tissus céramiques. EP-A-0 390 383 describes the spinning of ceramic fibers allowing the manufacture of ceramic fabrics.
L'invention pallie ces inconvénients en fournissant un équipement de protection individuelle, et notamment des gants de protection comportant un revêtement extérieur protecteur en ceramique et/ou métallique sur un substrat textile souple, ou similaire.The invention overcomes these drawbacks by providing personal protective equipment, including protective gloves with coating protective ceramic and / or metallic exterior on a flexible textile substrate, or the like.
Un tel revêtement presente notamment les avantages suivants :
- résistance remarquable a températures moyennes et élevees,
- resistance remarquable à l'abrasion,
- dans des conditions particulières; résistance à la piqûre par des aiguilles,
- bonne résistance à la coupure,
- dextérité et épaisseurs limitées.
- remarkable resistance to medium and high temperatures,
- remarkable abrasion resistance,
- under special conditions; resistance to needlestick injury,
- good cut resistance,
- limited dexterity and thickness.
Le revêtement exérieur protecteur peut consister en une simple couche de céramique ou métallique, ou en toute combinaison de plusieurs telles couches, et notamment, de préférence, en une première couche métallique recouverte d'une seconde couche en céramique.The protective exterior coating may consist of a single layer of ceramic or metal, or any combination of several such layers, and especially preferably in a first layer metal covered with a second ceramic layer.
Avantageusement, le revêtement extérieur protecteur a été formé par projection à chaud de céramiques ou de métaux, sous forme de poudres, sur des substrats textiles naturels ou synthétiques, technique pour laquelle on dispose de plusieurs méthodes de réalisation.Advantageously, the protective outer coating has was formed by hot spraying of ceramics or metals, in the form of powders, on substrates natural or synthetic textiles, technique for which we have several methods of production.
Bien que de très nombreux types de céramiques puissent être utilisés pour la protection et se prêtent à la projection à chaud, on obtient déjà de bons résultats avec une céramique Al2O3 - TiO2 relativement simple. Bien entendu il est envisageable d'utiliser tout autre type de céramiques, par exemple obtenues à l'aide de mélanges d'oxydes, de nitrures ou de carbures métalliques, et notamment une céramique Zr O2-CaO.Although many types of ceramic can be used for protection and lend themselves to hot spraying, good results are already obtained with a relatively simple Al 2 O 3 - TiO 2 ceramic. Of course, it is conceivable to use any other type of ceramic, for example obtained using mixtures of oxides, nitrides or metal carbides, and in particular a Zr O 2 -CaO ceramic.
De nombreux métaux peuvent être mis en oeuvre pour constituer le revêtement extérieur protecteur, les alliages Ni-Cr et l'aluminium convenant particulièrement bien.Many metals can be used for constitute the protective external coating, Ni-Cr alloys and aluminum particularly suitable well.
L'épaisseur du revêtement peut être réglée en fonction des applications particulières auxquelles est destiné le produit, mais une épaisseur trop importante nuit à la souplesse du produit final. On utilisera en général une épaisseur de 20 à 200 µm.The coating thickness can be adjusted by depending on the particular applications to which intended for the product, but too thick harms the flexibility of the final product. We will use in generally a thickness of 20 to 200 µm.
Les revêtements par projection à chaud sont obtenus par écrasement à grande vitesse de gouttelettes fondues sur un substrat. Dans le cas d'un substrat textile, l'adhérence du revêtement est obtenue par un accrochage mécanique. On peut également envisager un traitement préalable favorisant l'accrochage entre substrat et revêtement.Hot spray coatings are obtained by high-speed crushing of molten droplets on a substrate. In the case of a textile substrate, the adhesion of the coating is obtained by a hanging mechanical. We can also consider a treatment prerequisite promoting attachment between substrate and coating.
On dispose essentiellement de trois méthodes de
projection à chaud :
Selon la méthode a), on procède manuellement ou de façon robotisée.According to method a), one proceeds manually or robotic way.
Selon les méthodes b) et c), on procède en ambiance protégée, au moyen de mouvements robotisés de la torche à plasma, à commande numérique, permettant d'obtenir des épaisseurs parfaitement uniformes. Dans ce cas, le procédé consiste à évaporer la poudre de céramique ou métallique, de granulométrie contrôlée, dans un plasma gazeux, et à projeter à grande vitesse les gouttelettes de condensation sur le substrat. En règlant les différents paramètres de la projection, et notamment les mouvements du robot, dans chaque cas, on dépose une couche d'épaisseur uniforme voulue.According to methods b) and c), we proceed in an ambient protected, by means of robotic movements of the torch plasma, numerically controlled, for obtaining perfectly uniform thicknesses. In this case, the process involves evaporating the ceramic powder or metallic, of controlled particle size, in a plasma gaseous, and to project the droplets at high speed condensation on the substrate. By paying the different projection parameters, including robot movements, in each case, a layer of uniform thickness desired.
Plusieurs couches de natures et d'épaisseurs différentes peuvent être superposées, dans le but d'obtenir des résultats spécifiques.Several layers of natures and thicknesses different can be superimposed, for the purpose to get specific results.
Le subtrat doit résister à des températures supérieures à 100°C sans altérations de ses caractéristiques physico-chimiquesSubstrate must withstand temperatures higher than 100 ° C without alterations of its physico-chemical characteristics
A titre d'exemple, on a réalisé des gants de protection selon la technique b). Sur un substrat classique, on a déposé un revêtement de céramique Al2-O3 - TiO2, un à une épaisseur de 100 µm et l'autre à une épaisseur de 150 µm.By way of example, protective gloves have been produced according to technique b). On a conventional substrate, an Al 2 -O 3 - TiO 2 ceramic coating was deposited, one at a thickness of 100 μm and the other at a thickness of 150 μm.
Ces gants ont été essayés dans des conditions réelles
de manipulation et l'on obtient les avantages suivants :
on constate une meilleure adhérence, et donc une
meilleure préhension vis-à-vis des pièces à manipuler,
même en présence de couches épaisses de produits
lubrifiants, ainsi qu'une diminution importante de
l'effort de manipulation, ce qui améliore nettement les
conditions de travail et donc la productivité.These gloves have been tested under real handling conditions and the following advantages are obtained:
there is better adhesion, and therefore better grip with respect to the parts to be handled, even in the presence of thick layers of lubricant products, as well as a significant reduction in the handling effort, which clearly improves the conditions of work and therefore productivity.
On constate qu'il est possible de manipuler dans de meilleures conditions des pièces de températures relativement élevées, et fortement abrasives, la résistance améliorée des gants dans ces conditions augmentant considérablement leur durée d'usage.We note that it is possible to manipulate in better conditions of temperature rooms relatively high, and highly abrasive, the improved resistance of gloves under these conditions considerably increasing their useful life.
On constate enfin que même dans des circonstances difficiles, il y a moins de risques de coupures ou de détériorations mécaniques des gants revêtus de céramique.Finally, we note that even in circumstances difficult, there is less risk of cuts or mechanical damage to gloves coated with ceramic.
L'invention n'est bien entendu pas limitée aux seuls gants de protection, et peut s'appliquer à tout équipement de protection individuelle pour hautes températures, devant présenter en outre de bonnes résistances mécaniques.The invention is of course not limited to only protective gloves, and can be applied to any personal protective equipment for tall temperatures, which must also have good mechanical resistance.
Claims (7)
- Individual protection equipment comprising a flexible textile substrate, comprising an outer protective covering of ceramic and/or metallic material, characterised in that the covering is formed by the spraying under heat of ceramics or metals in the form of powders and in that molten droplets are crushed on the flexible textile substrate at high velocity.
- Equipment according to Claim 1, characterised in that the outer protective coating consists of a layer of ceramic material.
- Equipment according to Claim 1, characterised in that the outer protective coating consists of a layer of metallic material.
- Equipment according to Claim 1, characterised in that the outer protective coating consists of a first metallic layer and a second ceramic layer.
- Equipment according to any one of Claims 1 to 4, characterised in that the outer coating is of Al2O3-TiO2 and/or ZrO2-CaO ceramic material and/or Ni-Cr and/or Al alloy.
- Equipment according to any one of Claims 1 to 5, characterised in that the equipment is gloves.
- A method of producing an individual protection equipment according to any one of Claims 1 to 6, characterised in that, under heat and at high velocity, and on a basis of ceramic powders and/or a metallic composition, molten droplets of these materials are sprayed onto a flexible textile substrate in one or a plurality of successive layers.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9311207 | 1993-09-21 | ||
| FR9311207A FR2710247B1 (en) | 1993-09-21 | 1993-09-21 | Personal protective equipment, including protective gloves. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0643930A1 EP0643930A1 (en) | 1995-03-22 |
| EP0643930B1 true EP0643930B1 (en) | 2000-05-10 |
Family
ID=9451060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94402090A Expired - Lifetime EP0643930B1 (en) | 1993-09-21 | 1994-09-20 | Individual protective equipment especially protective gloves |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0643930B1 (en) |
| DE (1) | DE69424357T2 (en) |
| FR (1) | FR2710247B1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1005731C2 (en) * | 1997-04-04 | 1998-10-07 | Zeffex Plastics Bv | Lightweight and flexible non-metallic stab resistant material. |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4223064A (en) * | 1979-05-10 | 1980-09-16 | The United States Of America As Represented By The United States Department Of Energy | Alkali metal protective garment and composite material |
| US4401707A (en) * | 1981-12-07 | 1983-08-30 | The United States Of America As Represented By The Secretary Of The Navy | Composite heat protective fabric |
| GB2178365B (en) * | 1985-08-02 | 1989-08-23 | Drg Uk Ltd | Protective clothing made from welded multilayer sheet material incorporating a barrier layer |
| DE3737299A1 (en) * | 1986-11-06 | 1988-05-11 | Lederfabrik Hase Gmbh | High-temperature protective glove |
| CA2011444A1 (en) * | 1989-03-31 | 1990-09-30 | Thomas L. Tompkins | Carbon-coated ceramic textiles |
| US5217933A (en) * | 1991-06-03 | 1993-06-08 | Minnesota Mining And Manufacturing Company | Yttria-alumina fibers |
-
1993
- 1993-09-21 FR FR9311207A patent/FR2710247B1/en not_active Expired - Fee Related
-
1994
- 1994-09-20 EP EP94402090A patent/EP0643930B1/en not_active Expired - Lifetime
- 1994-09-20 DE DE69424357T patent/DE69424357T2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE69424357T2 (en) | 2001-02-08 |
| FR2710247B1 (en) | 1995-12-08 |
| FR2710247A1 (en) | 1995-03-31 |
| EP0643930A1 (en) | 1995-03-22 |
| DE69424357D1 (en) | 2000-06-15 |
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