| 摘要 |
<p>FIELD: production of high-accuracy masking member with complex profile. ^ SUBSTANCE: member is designed for protecting certain portion of article. Masking member is made of modified polypropylene having 5 -30 mass% of polyethylene and(or) ethylene-propylene copolymer is mixed with polypropylene. Masking member is produced by vacuum shaping and(or) by forming. If polyethylene and(or) ethylene-propylene copolymer is mixed with polypropylene tensile properties of polypropylene and its molding capability are enhanced. ^ EFFECT: improved quality of masking material. ^ 3 cl, 19 dwg</p> |
