| 摘要 |
PROBLEM TO BE SOLVED: To provide a synthetic resin-made hollow member which is allowed to reduce environmental load in production. SOLUTION: The synthetic resin-made hollow member has a flat sheet 12 fused to the opening side of columnar projected parts 13 in an irregular sheet 11 where a lot of the columnar projected parts 13 are formed, wherein hydrophobic starch with particle sizes of≤5μm is mixed into the main component synthetic rein at least for one of the irregular sheet 11 and flat sheet 12. COPYRIGHT: (C)2009,JPO&INPIT
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