| 摘要 |
PROBLEM TO BE SOLVED: To provide a recyclable plastic form for placing concrete, excellent in both bending rigidity and impact resistance and lightweight, good in workability, releasability of concrete, and durability. SOLUTION: The form for placing concrete is composed of a propylene-ethylene block copolymer having 0.3-4.0 g/10 min in melt mass flow rate (MFR), a resin compound including a powdery and granular inorganic filler within 1-20μm in average particle size. The mass ratio ( propylene-ethylene block copolymer/inorganic filler ) of propylene-ethylene block copolymer to the inorganic filler ranges 60/40-95/5. COPYRIGHT: (C)2005,JPO&NCIPI
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