Thermoplastic resin foam, method of producing the same, and light reflecting material thereof
AssigneeFurukawa Electric Co., Ltd.
InventorsHideyuki IKEDA, Minoru SAITO, Kojiro INAMORI
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Abstract
{Problems} The present invention is contemplated for providing a thermoplastic resin foam and a light reflecting material having a high reflectivity when being made thin, as well as a method of producing the thermoplastic resin foam. {Means to Solve} A thermoplastic resin foam, prepared by using a thermoplastic resin composition containing a melt-type crystallization nucleating agent (B) in a crystalline thermoplastic resin (A), which foam comprises a bubble having a mean bubble diameter of less than 1 μm in the inside thereof.
Claims8
A thermoplastic resin foam, prepared by using a thermoplastic resin composition containing a melt-type crystallization nucleating agent (B) in a crystalline thermoplastic resin (A), which foam comprises a bubble having a mean bubble diameter of less than 1 μm in the inside thereof.
A method of producing a thermoplastic resin foam, comprising the steps of:
- impregnating a resin composition sheet containing a crystalline thermoplastic resin (A) and a melt-type crystallization nucleating agent (B) with an inert gas by maintaining the sheet in a pressurized inert gas atmosphere;
- and
- foaming by heating the sheet impregnated with the inert gas under normal pressure.
Dependencies are inferred from the claim text.