SURFACE SHAPE TRANSFER RESIN SHEET MANUFACTURING METHOD

WIPO Patent Application WO/2012/023447

A1

Provided is a surface shape transfer resin sheet manufacturing method capable of accurately transferring a transfer pattern to the surface of a resin sheet and, in addition, capable of preventing a winding phenomenon at a shaped roll from occurring. In one embodiment of the invention, a resin sheet (53) is formed by continuously extruding a resin in a heat-melting state from a die (58), and the resin sheet (53) is inserted between an upper roll (63) and an intermediate roll (64). Next, the resin sheet (53) is conveyed while being firmly attached to the intermediate roll (64), and the conveyed resin sheet (53) is inserted between the intermediate roll (64) and a lower roll (65). Upon insertion between the intermediate roll (64) and the lower roll (65), an intaglio transfer pattern (69) formed on the lower roll (65) is transferred to the surface (76) of the resin sheet (53). As the lower roll (65), a shaped roll is used, which is equipped with the intaglio transfer pattern (69) having the surface with a wetting tension of 35 mN/m or less measured conforming to JIS K6768.

HAMAMATSU TOYOHIRO (JP)
KAWAMURA MAKI (JP)

PCT/JP2011/067980

February 23, 2012

August 05, 2011

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SUMITOMO CHEMICAL CO (JP)
HAMAMATSU TOYOHIRO (JP)
KAWAMURA MAKI (JP)

B29C59/04; B29C48/07; B29C48/08; B29C48/305; B29C48/91; B29C48/12; B29C48/13; B29L7/00

JP2007090859A	2007-04-12
JPH08211205A	1996-08-20
JPH1149954A	1999-02-23
JP2000158533A	2000-06-13
JP2005238834A	2005-09-08
JPH07290552A	1995-11-07

HASEGAWA Yoshiki et al. (JP)
Yoshiki Hasegawa (JP)

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