| 摘要 |
PROBLEM TO BE SOLVED: To provide a foamed resin structural material at low cost which contains fine bubbles, is excellent in surface hardness, and can be suitably used as an optical reflecting board, an exterior decorative material, a housing, etc. SOLUTION: A non-crystalline resin layer of a two-layered structure comprising a foamed layer and a non-foamed layer is laminated on both surfaces of finely foamed material whose average bubble size is 30μm or smaller to constitute a resin foamed structural material. The non-crystalline resin preferably contains a polyallylate resin and a UV ray resistant agent, and an average bubble size of the non-crystalline resin layer is preferably 0.5 to 50μm. COPYRIGHT: (C)2009,JPO&INPIT |
