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US 5,308,695 AGranted
Adhesive tapes for medical or sanitary use
AssigneeNitto Denko Corporation
InventorsMasaaki Arakawa, Hidehiko Murata, Takaaki Moriyama, Kazuo Suenaga
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Abstract
The present invention provides a medical or sanitary adhesive tape comprising a support composed of a laminate structure of a first layer containing a thermoplastic elastomer and a second layer comprising a plastic film or nonwoven fabric, and an adhesive layer formed at least one surface of said support. The adhesive tape possesses advantages that is endowed with properties of both softness and elasticity, gentle to the skin and excellent in handling and processing characteristics.
Claims1
A medical or sanitary adhesive tape comprising:
- (a) a support having a laminate structure comprising:
- (1) a first layer of an elastic film comprising one of or a mixture of at least two thermoplastic elastomers selected from the group consisting of:
- polyolefin elastomers having a hard segment of polyethylene or polypropylene and a soft segment of ethylenepropylene diene monomer or ethylenepropylene monomer;
- polystyrene elastomers having a hard segment of polystyrene and a soft segment of butadiene rubber, isoprene rubber, or hydrogenated butadiene rubber;
- polyester elastomers having a hard segment of polyester and a soft segment of polyether or polyester;
- and chlorinated polyethylene elastomers having a hard segment of block chlorinated polyethylene and a soft segment of randomly chlorinated polyethylene, wherein said thermoplastic elastomer used in the first layer has a permanent compression strain of 5 to 100% and a Shore hardness of not less than A20 and not more than D70;
- (2) a second layer comprising a plastic film or a nonwoven fabric wherein the crosswise compression strength of said support is not greater than 200 g/mm.sup.2 ;
- and
- (b) an adhesive layer formed on at least one surface of said support.
6 more elements
Dependencies are inferred from the claim text.