| 摘要 |
<p>PURPOSE:To obtain water proofing and water resistant functions without loss of biodegradability, by forming a resin layer having water proofing function and biodegradability on the surface of a biodegradable molding. CONSTITUTION:Rosin, gilsonite, and rubber resin like gutta-percha, sandarac resin and dammar resin having water proofing ability and biodegradability are laminated on the surface of a biodegradabale molding such as starch, protein, and pulp mode. In this way, the water proofing and water resistant ability of the biodegradability molding are improved and even when it is used as a container for materials including water, it does not bring water leakage. And hence, its applicable scope like food containers can be widened.</p> |
