Title:
MULTILAYER SHEET AND METHOD FOR PRODUCING MULTILAYER SHEET
Document Type and Number:
WIPO Patent Application WO/2020/158233
Kind Code:
A1
Abstract:
The present invention provides: a multilayer sheet which contains a polyolefin resin and carbon fibers, and which is highly competitive in price; and a method for producing this multilayer sheet. A multilayer sheet (100) according to the present invention comprises: a carbon fiber layer (20) which contains a woven fabric of carbon fibers; and polyolefin resin layers (10) which are in contact with the both surfaces of the carbon fiber layer (20). The carbon fiber layer (20) has a porosity of 10.0% or less. A method for producing this multilayer sheet (100) according to the present invention comprises a process of applying a surface treatment agent to the both surfaces of a woven fabric of carbon fibers, a process of superposing polyolefin resin sheets on the both surfaces of the woven fabric to which the surface treatment agent has been applied, and a process of melting the polyolefin resin by applying a pressure onto the laminate of the polyolefin resin sheets and the woven fabric, while heating the laminate, and subsequently cooling the laminate, thereby obtaining a multilayer sheet.
Inventors:
KOBAYASHI HIROFUMI (JP)
KOBAYASHI HIDEKI (JP)
KOBAYASHI HIDEKI (JP)
Application Number:
PCT/JP2019/049872
Publication Date:
August 06, 2020
Filing Date:
December 19, 2019
Export Citation:
Assignee:
NISSIN KOGYO KK (JP)
International Classes:
B32B5/10; B29C70/34; B32B27/12; B32B27/32; C08J5/06
Domestic Patent References:
| WO2018163799A1 | 2018-09-13 | |||
| WO2016067711A1 | 2016-05-06 | |||
| WO2016136540A1 | 2016-09-01 | |||
| WO2018088471A1 | 2018-05-17 |
Foreign References:
| JP2011021281A | 2011-02-03 | |||
| JP2015143370A | 2015-08-06 | |||
| JP2013256616A | 2013-12-26 |
Other References:
See also references of EP 3919268A4
Attorney, Agent or Firm:
FUSE, Yukio et al. (JP)
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