Apparel – Hand or arm coverings – Gloves
Patent
1989-11-22
1991-06-04
Cuchlinski, Jr., William A.
Apparel
Hand or arm coverings
Gloves
2168, A41D 1900
Patent
active
050201620
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a glove comprising a front sheet and a back sheet, at least one of said sheets consisting of an inner layer and an outer layer made of polymeric films, said layers being bound to each other.
The use of very thick plastic gloves becomes necessary, when the user is submitted to rather high temperatures, ionizing radiations, highly toxic aggressive chemicals or high mechanical stresses.
The front and back sheets of known plastic gloves, such as described in U.S. Pat. Nos. 3,025,403 and 3,883,749, comprise each an inner layer and an outer layer consisting of polymeric films which are bound to each other on the entire area of the faces facing each other of said layers, so that said layers are integral.
When said gloves are thick, for example, when they have a thickness of about 200 microns, it becomes frequently difficult or impossible for the user to have a good feeling for the fingers.
Another disadvantage of the known plastic gloves provided with polymeric layers glued together is the danger of a complete tear from a little fissure or another defect.
An object of this invention is a thick plastic glove having the ergonomical qualities of a thinner glove.
Another object of the present invention is a glove having a high feeling sensivity, despite its thickness.
Other objects of the present invention are gloves having the following advantages with respect to said known gloves: thereof;
The glove according to the invention of the type defined in the first paragraph of this specification is essentially characterized in that faces facing each other of at least two adjacent layers are independent from each other so as to allow relative movements between said two layers.
The glove according to the invention comprises preferably at least two separate layers only bound to each other along their periphery.
In a particular embodiment of the glove according to the invention, the dynamic and static friction coefficient of the faces facing each other of said adjacent layers is of less than 0.80 and more preferably lower than 0.70.
According to a feature of the glove according to the invention, the adjacent layers contain at least one agent allowing said layers to slide on each other or the faces facing each other of the adjacent layers are coated with at least one agent allowing said layers to slide on each other.
Said agent is preferably selected in the group consisting of saturated hydrocarbons, fatty acids, high molecular weight alcohols, metal soaps, waxes fatty acid monoesters, fatty acids partially esterified polyfunctional alcohols, fatty acid bisamides, stearamide and erucamide.
More particularly, said agent which acts as a lubricant is selected among: a molecular weight comprised between 2,000 and 10,000 and having preferably a melting point of about 65.degree. to 75.degree. C.; oleic and 12-hydroxy stearic acids; such as waxes from partially saponified montanic acid, esters with C.sub.28 and C.sub.32 chains and stearyl stearate; monoricinoleates, esters of sorbitol, ethylene glycol, propylene glycol and pentaerythritol, and bisamide, ethylene bisstearoylamide.
Said additive, agent or product is used in most formulations in a proportion of 1 to 2% by weight with respect to the weight of the polymer. These additives, agents or products improve the surface properties of polymers, but may also improve the light stability, resistance to degradation by corrosive agents and to water absorption and the electrical, optical and mechanical properties.
Said additives or lubricants prevent the polymers to have a tendency toward tackiness.
In another particular embodiment of the invention, the faces facing with each other of the adjacent layers are provided with a multiplicity of projections and/or cavities.
Instead of providing a sliding agent within the adjacent layers or in a coating applied on these layers, it is possible, according the invention, to use loose particles which are located between the faces of said adjacent layers, said particles promoting relative movements between said laye
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Heindrichs Daniel
Kersten Jean
Lombard Etienne
Baxter International Inc.
Cuchlinski Jr. William A.
Cummings Scott
Flattery Paul C.
Pierce Kay H.
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