Title:
LAMINATED BODY AND WELDED BODY USING SAME
Document Type and Number:
WIPO Patent Application WO/2021/187043
Kind Code:
A1
Abstract:
In order to provide a laminated body that enables easy welding without influencing physical properties and that is obtained by laminating a fiber-reinforced thermoplastic resin base material as well as a welded body using said laminated body, this laminated body is obtained by laminating at least five layers of a fiber-reinforced thermoplastic resin base material. The fiber-reinforced thermoplastic resin base material is characterized by: being obtained by impregnating conductive and continuous reinforcement fibers aligned in parallel to each other with a thermoplastic resin; and satisfying one of the following points. (i) Among the at least five layers of the fiber-reinforced thermoplastic resin base material that constitute the laminated body, there is a difference of 10-90° between the alignment direction of reinforcement fibers that constitute a fiber-reinforced thermoplastic resin base material S1 constituting at least one outermost layer and the alignment direction of reinforcement fibers that constitute a fiber-reinforced thermoplastic resin base material S2 located in the second layer from the outermost layer. In an interlayer I12 between the fiber-reinforced thermoplastic resin base material S1 and the fiber-reinforced thermoplastic resin base material S2, the fiber contact rate is 20-100%. In a portion between the fiber-reinforced thermoplastic resin base materials other than the interlayer I12, the fiber contact rate is less than 20%. (ii) Among the at least five layers of the fiber-reinforced thermoplastic resin base material that constitute the laminated body, there is a difference of 10-90° between the alignment direction of reinforcement fibers that constitute a fiber-reinforced thermoplastic resin base material S1 constituting at least one outermost layer and the alignment direction of reinforcement fibers that constitute a fiber-reinforced thermoplastic resin base material S2 located in the second layer from the outermost layer. There is a difference of 10-90° between the alignment direction of reinforcement fibers that constitute the fiber-reinforced thermoplastic resin base material S2 located in the second layer from the outermost layer and the alignment direction of reinforcement fibers that constitute a fiber-reinforced thermoplastic resin base material S3 located in the third layer from the outermost layer. In the interlayer I12 between the fiber-reinforced thermoplastic resin base material S1 and the fiber-reinforced thermoplastic resin base material S2 and an interlayer I23 between the fiber-reinforced thermoplastic resin base material S2 and the fiber-reinforced thermoplastic resin base material S3, the fiber contact rate is 20-100%. In a portion between the fiber-reinforced thermoplastic resin base materials other than the interlayer I12 and the interlayer I23, the fiber contact rate is less than 20%.
Inventors:
YOSHINO KOUKI (JP)
KOSHI MASAYUKI (JP)
KOSHI MASAYUKI (JP)
Application Number:
PCT/JP2021/007112
Publication Date:
September 23, 2021
Filing Date:
February 25, 2021
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
B29B15/12; B29C70/10; B32B5/28; C08J5/04; B29K105/10
Domestic Patent References:
| WO2013140786A1 | 2013-09-26 | |||
| WO2018235512A1 | 2018-12-27 | |||
| WO2018051445A1 | 2018-03-22 | |||
| WO2017022835A1 | 2017-02-09 | |||
| WO2012158293A1 | 2012-11-22 |
Foreign References:
| JP2008308626A | 2008-12-25 | |||
| JPS5859076A | 1983-04-07 | |||
| JPH02286311A | 1990-11-26 | |||
| JP2013522412A | 2013-06-13 | |||
| JP2008231395A | 2008-10-02 |
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