Title:
METHOD FOR PRODUCING THERMOPLASTIC RESIN COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2023/234220
Kind Code:
A1
Abstract:
A method for producing a thermoplastic resin composition, the method including a kneading step for melting and kneading a thermoplastic resin and bundles of fibrous filler inside a barrel using a twin screw extruder having a pair of screws inside the barrel, wherein the method for producing a thermoplastic resin composition includes a pre-kneading step for melting and kneading the thermoplastic resin and bundles of fibrous filler inside the barrel in advance before the kneading step, the pre-kneading step is implemented in a pre-kneading zone positioned on the upstream side of a kneading zone where the kneading step is implemented, kneading discs are installed on the pair of screws inside the pre-kneading zone, and the maximum value of the distance between the distal end of the kneading disc and the position on the inner wall of the barrel that opposes the distal end of the kneading disc is 1.00-4.00 mm.
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Inventors:
NAKAZAWA KAZUFUMI (JP)
ISHIDA HIROSHI (JP)
ISHIDA HIROSHI (JP)
Application Number:
PCT/JP2023/019772
Publication Date:
December 07, 2023
Filing Date:
May 26, 2023
Export Citation:
Assignee:
POLYPLASTICS CO (JP)
International Classes:
B29C48/57; B29B7/48; B29B9/14; B29C48/40; B29C48/655; C08J3/20; C08J5/04
Domestic Patent References:
| WO2022168928A1 | 2022-08-11 |
Foreign References:
| JP2006150936A | 2006-06-15 | |||
| JPH1016033A | 1998-01-20 | |||
| JP2020040356A | 2020-03-19 | |||
| US6783270B1 | 2004-08-31 | |||
| JP2022099828A | 2022-07-05 |
Attorney, Agent or Firm:
MIYOSHI Hidekazu et al. (JP)
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