Title:
EXTRUDED RESIN SHEET MANUFACTURING METHOD AND EXTRUDED RESIN SHEET
Document Type and Number:
WIPO Patent Application WO/2017/164276
Kind Code:
A1
Abstract:
An extruded resin sheet manufacturing method comprising a step for extruding a thermoplastic resin laminate (16), in which a layer containing a methacrylic resin with a glass transition temperature of at least 115°C is laminated on at least one surface of a polycarbonate-containing layer, from a T-die (11) in a melted state, wherein at the position in which the thermoplastic resin laminate (16) is peeled from a cooling roll (14) onto which the laminate is ultimately wound, the temperature of the resin as a whole is made to be in the range of −2°C to +15°C with respect to the glass transition temperature of the polycarbonate-containing layer and the circumferential velocity ratio (V4/V2) of the circumferential velocity (V4) of drawing rolls (15) to the circumferential velocity (V2) of a second cooling roll (13) is made to be 0.98 to 1.01.
Inventors:
FUNAZAKI KAZUO (JP)
Application Number:
PCT/JP2017/011620
Publication Date:
September 28, 2017
Filing Date:
March 23, 2017
Export Citation:
Assignee:
KURARAY CO (JP)
International Classes:
B29C48/885; B29C48/92; B29L9/00
Domestic Patent References:
| WO2016038868A1 | 2016-03-17 | |||
| WO2014061817A1 | 2014-04-24 | |||
| WO2014050136A1 | 2014-04-03 | |||
| WO2016042727A1 | 2016-03-24 |
Foreign References:
| JP2012096357A | 2012-05-24 |
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