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

IPC: B29C44/34 ,  B29C44/02 ,  B29C35/08 ,  B41M7/00

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.

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

IPC: B32B27/20 ,  B32B27/08 ,  B32B27/10 ,  B32B3/26 ,  B29C61/04

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.