| 摘要 |
PURPOSE:To provide economically the title molding excellent in mechanical strengths by compounding a biodegradable aliph. polyester with calcium carbonate and/or magnesium carbonate in a specified wt. ratio. CONSTITUTION:30-60wt.% biodegradable aliph. polyester (e.g. polyhydroxybutyrate or polyethylene adipate), 70-40wt.% calcium carbonate and/or magnesium carbonate, and if necessary starch are mixed and molded by extrusion molding, injection molding, etc., into a desired shape, giving the title molding. The molding, highly loaded with calcium carbonate and/or magnesium carbonate, is excellent in mechanical strengths and suitably used for a flower pot, a sheet for afforestation, etc. |
