| 摘要 |
PROBLEM TO BE SOLVED: To provide a propylene resin pre-foamed particle capable of providing an in-mold foamed body excellent in fusion and surface beauty and high in rigidity by a molding machine with 0.4 MPa pressure resistant specification. ! SOLUTION: A polypropylene resin pre-foamed particle obtained by foaming a polypropylene resin particle having a resin mixture containing a polypropylene resin of 95.0 to 99.5 wt.% and (B) a modified polypropylene resin having a loss tangent, tanδ, of 0.6 to 2.0 by a dynamic viscoelasticity measurement at 180°C of 0.5 to 5.0 wt.% as a base resin, where the total amount of (A) and (B) is 100 wt.%, has above described properties. ! COPYRIGHT: (C)2015,JPO&INPIT |
