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1.
公开(公告)号:US20200206990A1
公开(公告)日:2020-07-02
申请号:US16713156
申请日:2019-12-13
Applicant: CASIO COMPUTER CO., LTD.
Inventor: Hiroshi MOROKUMA , Satoshi MITSUI , Yoshimune MOTOYANAGI , Yuji HORIUCHI
Abstract: An thermally expandable sheet includes a base and a thermal expansion layer arranged on one surface of the base and configured to be used in manufacture of a shaped object by swelling of at least a portion of the thermal expansion layer. The thermal expansion layer includes a first thermally expandable material having a first expansion initiation temperature and a first maximum expansion temperature, and a second thermally expandable material having a second expansion initiation temperature and a second maximum expansion temperature. The first expansion initiation temperature and the second expansion initiation temperature are high in comparison to a temperature of an environment in which the shaped object is to be placed. The second maximum expansion temperature is high in comparison to the first maximum expansion temperature.
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公开(公告)号:US20200039198A1
公开(公告)日:2020-02-06
申请号:US16525394
申请日:2019-07-29
Applicant: CASIO COMPUTER CO., LTD.
Inventor: Kenji IWAMOTO , Yuji HORIUCHI , Yoshimune MOTOYANAGI , Satoshi MITSUI , Hiroshi MOROKUMA
Abstract: A thermally expandable sheet including two or more thermally expandable layers that are laminated, the thermally expandable layers each expanding upon being heated to or above a predetermined expansion start temperature, wherein the thermally expandable layers include two adjacent layers different from each other in the expansion start temperature.
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