Pressure-sensitive adhesive tape

Surgery – Means and methods for collecting body fluids or waste material – Absorbent pad for external or internal application and...

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A61F 1316

Patent

active

049042530

ABSTRACT:
Normally tacky, pressure-sensitive adhesive tapes which are soft, pliable, conformable, and heat sealable are provided. The tapes have a backing of a substantially untensilized, tough, ductile film, the film being a blend of crystalline isotactic polypropylene and a compatible ethylene-based polymer, and a normally tacky, pressure-sensitive adhesive on one side of the film. The films have a longitudinal secant modulus of less than 3700 kg/cm.sup.2, a transverse secant modulus of less than 3700 kg/cm.sup.2, a longitudinal elastic modulus of less than 5200 kg/cm.sup.2, a transverse elastic modulus of less than 5200 kg/cm.sup.2, a longitudinal stiffness of less than 1.7, and a transverse stiffness of less than 3.0.

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Derwent File Supplier WPI, AN 77-53214y(30), Derwent Publications Ltd., London, GB, & JP-A-52 071 537 (Toyo Spinning K.K.).

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