| 摘要 |
<p>PURPOSE:To allow the reuse of the masking material without generating deformation even if the masking material is used for coating including a heating stage by subjecting the surface of polyolefin mixed with an inorg. filler as the material of the masking material to a release treatment. CONSTITUTION:The masking material 31 is formed by applying a silicon-based release agent on the surface of a polypropylene sheet mixed with 30wt.% talc and drying the coating to apply the release treatment 31D thereon, then vacuum molding the material. The molding consists of a box-shaped body 31A and a self-adhesive layer 31B formed on the rear surface of the body 31A. The self-adhesive layer 31B is coated with a release sheet 31C, such as polyethylene film, polypropylene film or release paper,. This sheet is peeled and is stuck to a part 2 of the member 1 where the coating is not to be applied, by which this part is protected. Namely, since the self-adhesive layer consists of the polypropylene sheet mixed with 30wt.% talc, the reuse of the masking material is possible without deformation even after a heating treatment.</p> |
