| 摘要 |
PROBLEM TO BE SOLVED: To provide polypropylene resin-laminated foamed sheets suitable for obtaining moldings having a deep shape, which are lightweight, excellent in thermal insulation and the rigidity when used at a high temperature, and to provide their manufacturing methods and moldings obtained by heating and shaping the laminated foamed sheets. SOLUTION: The polypropylene resin-laminated foamed sheet is formed by laminating a non-foamed polypropylene resin layer on at least one side of a polypropylene resin foamed sheet by extrusion lamination. After lamination, the polypropylene resin-laminated foamed sheet has a ratio of closed cells of 50% or higher, and thickness of 2.5-5.0 mm. COPYRIGHT: (C)2006,JPO&NCIPI |
