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US 2013/0158143 A1Published application
Thermoplastic resin foam, method of producing the same, and light reflecting material using the same
AssigneeFurukawa Electric Co., Ltd.
InventorsHideyuki IKEDA, Kojiro INAMORI
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Abstract
A thermoplastic resin foam, having a bubble with an average bubble diameter of 10 μm or less in the inside thereof, in which wherein the thermoplastic resin foam is prepared by using and foaming a thermoplastic resin composition containing 0.25 to 2.5 part(s) by mass of a melt-type crystallization nucleating agent (B), with respect to 100 parts by mass of an amorphous thermoplastic resin (A).
Claims7
A thermoplastic resin foam, comprising a bubble with an average bubble diameter of 10 μm or less in the inside thereof,
- wherein the thermoplastic resin foam is prepared by using and foaming a thermoplastic resin composition containing 0.25 to 2.5 part(s) by mass of a melt-type crystallization nucleating agent (B), with respect to 100 parts by mass of an amorphous thermoplastic resin (A).
A method of producing a thermoplastic resin foam, comprising the steps of:
- preparing a thermoplastic resin composition by melt-dispersing 0.25 to 2.5 part(s) by mass of a melt-type crystallization nucleating agent, with respect to 100 parts by mass of an amorphous thermoplastic resin;
- depositing the melt-type crystallization nucleating agent by solidifying the composition followed by impregnating an inert gas to the composition under pressure;
- and
- foaming the composition impregnated with the inert gas by heating at a temperature of a glass transition temperature of the amorphous thermoplastic resin or more under a released pressure.
1 more element
Dependencies are inferred from the claim text.