Paint masking tape substrate and paint masking tape

摘要

PCT No. PCT/JP97/01152 Sec. 371 Date Apr. 6, 1998 Sec. 102(e) Date Apr. 6, 1998 PCT Filed Apr. 3, 1997 PCT Pub. No. WO97/38059 PCT Pub. Date Oct. 16, 1997A coat masking tape base material and a coat masking tape, having superior follow-up properties, promising sharp paint lines and being free of "left-on" when peeled, in which a polyolefin resin film having a modulus of elasticity of from 15 to 55 kgf/mm2 has been subjected to modification treatment on its both sides, and a pressure-sensitive adhesive layer maintaining a thermoplastic saturated block copolymer, a thermoplastic unsaturated block copolymer and a tackifier or a cross-linked acrylic pressure-sensitive adhesive layer is formed on the film having been subjected to modification treatment.