Patent ID: 6551687
Filing Date: 2003-04-22
Classification: B32B,B65D,Y10T

Abstract:
A wrapping film having a sticky surface, convexities, and flat portions of film disposed between the convexities on at least one side, and comprising at least one agent selected from the group consisting of a surface active agent, an adhesive agent, and an oily agent, wherein said wrapping film has a shear adhesion strength of at most 400 cN/25 cm2 when measured subsequent to bringing said sticky surface into contact with a glass surface having a surface roughness of from 0.7 to 1.5 nm under a pressure of 4 Pa, a shear adhesion strength of at least 700 cN/25 cm2 when measured subsequent to bringing said sticky surface into contact with said glass surface under a pressure of 4 kPa, and the ratio of the height of the convexities to the thickness of the flat portion ranges from 0.03 to 1.67.