| 摘要 |
PROBLEM TO BE SOLVED: To provide a foam excellent in workability for adding desired strength, and a method for manufacturing the foam.SOLUTION: The foam includes a plurality of needle holes formed in a polyolefin based foam sheet, a high density part compressed in a thickness direction and a low density part having a density lower than that of the high density part. The thickness of the low density part is 1-20 mm. |
