Patent ID: 6632522
Filing Date: 2003-10-14
Classification: A61L,C08L,C09J,Y10T

Abstract:
A pressure-sensitive adhesive layer comprising a blend of at least one pressure-sensitive adhesive component and at least one thermoplastic, elastomeric, tackified elastomeric, or thermoplastic elastomeric material component being immiscible with the pressure-sensitive adhesive component at room temperature, said layer having an anisotropic morphology comprising two axes perpendicular to each other, both parallel to the main surface layer, said axes comprising a longitudinal axis in the down-web direction and a transverse axis in the cross-web direction, said morphology further comprising at least two distinct domains, a first substantially continuous domain comprising the at least one pressure sensitive adhesive component and a second domain comprising the at least one thermoplastic, elastomeric, tackified elastomeric, or thermoplastic elastomeric material component being fibrillose to schistose in nature and oriented along the down-web direction.