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Title:
METHOD OF MANUFACTURING POLYMER MOLDED PRODUCT INCLUDING PRETREATMENT BY HEATING
Document Type and Number:
WIPO Patent Application WO/2021/246434
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a method of manufacturing a polymer molded product, the method enabling the temperature range available for partial melting to be broadened. The present invention provides a method for manufacturing a polymer molded product, the method comprising: heat-treating a crystalline polyhydroxyalkanoate at or above the glass transition temperature; and melt-casting the polyhydroxyalkanoate which was obtained by said heat-treating and which contains lamellar crystals having different lamella thicknesses, the melt-casting being conducted at a temperature range in which a portion of the lamellar crystals are melted and fluidized whereas the remainder of the lamellar crystals remain without being melted.

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Inventors:
MAEHARA AKIRA (JP)
IWATA TADAHISA (JP)
OMURA TAKU (JP)
KABE TAIZO (JP)
Application Number:
PCT/JP2021/020957
Publication Date:
December 09, 2021
Filing Date:
June 02, 2021
Export Citation:
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Assignee:
MITSUBISHI GAS CHEMICAL CO (JP)
UNIV TOKYO (JP)
JAPAN SYNCHROTRON RADIATION RES INSTITUTE (JP)
International Classes:
D01F6/84; B29C48/00; B29K67/00
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Attorney, Agent or Firm:
SIKS & CO. (JP)
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