| 摘要 |
PURPOSE:To provide a release liner having a low surface tension and a stable peel strength, by molding a mixture of a polyolefin resin and a silicone resin into a film. CONSTITUTION:100pts.wt. polyolefin resin (A) (e.g., low-density PE resin) is mixed with 0.01-20pts.wt., pref. 0.1-10pts.wt. high-molecular compd. (B) having an organopolysiloxane structure, pref. rubbery silicone resin (e.g., silicone rubber) and optionally, a lubricant (e.g., stearic acid), a filler (e.g., BaSO4) and a colorant (C) to obtain a mixture. The mixture is molded at 140-180 deg.C into a film of 1-500mu in thickness, thus obtaining a release liner. A pressure-sensitive adhesive is applied to both sides of a nonwoven fabric, a plastic film or an expanded plastic sheet to form a pressure-sensitive adhesive layer of 10-100mu in thickness. The resulting tape or sheet is laminated onto said release liner and wound into a roll. |
