Patent ID: 9308291
Filing Date: 2016-04-12
CPC Classification: A61F,A61L,B32B,C08L,C09J,Y10T

Claim Text:
1. A medical pressure-sensitive adhesive sheet comprising a urethane substrate, an interlayer adhesive layer, an olefin nonwoven fabric, and a pressure-sensitive adhesive layer for pasting in order and having a moisture permeability amount of 2000 g/(m 2 ·24 hours) or more, wherein a thickness of the urethane substrate is a value within the range of from 1 to 10 μm, the interlayer adhesive layer is a urethane-based adhesive layer, a thickness of the interlayer adhesive layer is a value within the range of from 5 to 30 μm, the olefin nonwoven fabric is constituted with a polypropylene-based thermoplastic elastomer and has a maximum point elongation percentage of a value of 200% or more in a longitudinal direction and a transverse direction, respectively, a content of the polypropylene-based thermoplastic elastomer contained in the olefin nonwoven fabric is a value of above 95% by weight with respect to a total amount of raw materials of the olefin nonwoven fabric, an MFR of the polypropylene-based thermoplastic elastomer contained in the olefin nonwoven fabric is a value within the range of from 1 to 48 g/10 minutes (temperature: 230° C.), and a thickness of the pressure-sensitive adhesive layer for pasting is a value within the range of from 5 to 45 μm.