Patent ID: 6294250
Filing Date: 2001-09-25
Classification: C09J,Y10T

Abstract:
An adhesive film comprising:a substrate film;a primer layer formed on said substrate film wherein said primer layer has a thickness of 10-50 .mu.m and said primer layer comprises a second adhesive polymer and said primer layer has a compressive modulus of 1.times.10.sup.6 to 1.times.10.sup.7 dyne/cm.sup.2 ; andan upper layer which is formed on said primer layer and contains tacky elastic microspheres and a first adhesive polymer,wherein said tacky elastic microspheres comprise a third adhesive polymer and have a volume average diameter of 10 to 300 .mu.m,said tacky elastic microspheres forming convex shapes on said primer layer that allow air to escape between the adhesive film and an adherent.