| 摘要 |
<p>PURPOSE: A polylactic acid-based sheet is provided to ensure excellent heat resistance and shock resistance by solving problems on heat resistance of an existing polylactic acid sheet. CONSTITUTION: A method for manufacturing a polylactic acid-based sheet comprises the steps of: mixing talc with polylactic acid resin, injecting the mixture with aliphatic polyester into a feeder, melting, and passing the molten material to an inner layer of the sheet through a feeder block; mixing talc with polylactic acid resin, injecting the mixture into the other feeder, melting, and passing the molten material to an outer layer through the feeder block; and discharging a polymer through a slip type die to prepare a multi-layered sheet with constant thickness having a structure of outer layer : internal layer : outer layer of 1 : 8 : 1.</p> |
