发明公开
- 专利标题： THERMOPLASTIC RESIN FOAM
- 专利标题（中）： THERMOPLASTHARZSCHAUMSTOFF
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申请号： EP05775961.5申请日： 2005-08-31
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公开(公告)号： EP1717265A1公开(公告)日： 2006-11-02
- 发明人: MASUDA, Kohji, The Furukawa Electric Co., Ltd. , ITO, Masayasu, The Furukawa Electric Co., Ltd. , YOSHIDA, Naoki, The Furukawa Electric Co., Ltd.
- 申请人： The Furukawa Electric Co., Ltd.
- 申请人地址： 6-1, Marunouchi 2-chome Chiyoda-ku Tokyo 100-8322 JP
- 专利权人： The Furukawa Electric Co., Ltd.
- 当前专利权人： The Furukawa Electric Co., Ltd.
- 当前专利权人地址： 6-1, Marunouchi 2-chome Chiyoda-ku Tokyo 100-8322 JP
- 代理机构： Grünecker, Kinkeldey, Stockmair & Schwanhäusser Anwaltssozietät
- 优先权： JP2004266791 20040914; JP2004338291 20041124
- 国际公布： WO2006030640 20060323
- 主分类号： C08J9/12
- IPC分类号： C08J9/12 ; B29C67/20 ; C08L67/00 ; B29K267/00 ; B29K105/04
摘要：
An object of the present invention is to provide a thermoplastic resin sheet which has both high reflectance ratio and excellent shape-holding property suitable for backlights and illumination boxes for use in illumination signboards, illumination fixtures and displays and illumination boxes.
The thermoplastic resin foam is manufactured by a manufacturing method comprising a process for containing inert gas by holding thermoplastic resin sheet containing metallic oxide in a pressurized inert gas atmosphere and a process for heating the thermoplastic resin sheet in which the inert gas is contained at a temperature higher than the softening temperature of the thermoplastic resin, under normal pressure, and foaming the resin.
The thermoplastic resin foam is manufactured by a manufacturing method comprising a process for containing inert gas by holding thermoplastic resin sheet containing metallic oxide in a pressurized inert gas atmosphere and a process for heating the thermoplastic resin sheet in which the inert gas is contained at a temperature higher than the softening temperature of the thermoplastic resin, under normal pressure, and foaming the resin.
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