Title:
射出成形体およびその製造方法
Document Type and Number:
Japanese Patent JP7137111
Kind Code:
B2
Abstract:
Provided an injection molded article obtained by injection molding a copolymer using a mold provided with a gate, wherein the copolymer contains tetrafluoroethylene (TFE) unit and a fluoro(alkyl vinyl ether) (PAVE) unit, the content of the fluoro(alkyl vinyl ether) unit of the copolymer is 3.5 to 4.7% by mass with respect to the whole of the monomer units, the melt flow rate at 372° C. of the copolymer is 22.0 to 35.0 g/10 min, the number of functional groups of the copolymer is 20 or less per 106 main-chain carbon atoms, and the injection molded article has a gate section corresponding to the gate of the mold, and the ratio of the maximum flow length from the gate section of the injection molded article (a) to the average value of the product thickness on the maximum flow length (b), ((a)/(b)), is 80 to 200.
Inventors:
Hayato Tsuda
Tadaharu Isaka
Yumi Yoshiya
Yukari Yamamoto
Yamaguchi Yasuyuki
Hiroyuki Hamada
Tadaharu Isaka
Yumi Yoshiya
Yukari Yamamoto
Yamaguchi Yasuyuki
Hiroyuki Hamada
Application Number:
JP2022012585A
Publication Date:
September 14, 2022
Filing Date:
January 31, 2022
Export Citation:
Assignee:
Daikin Industries, Ltd.
International Classes:
B29C45/00; C08F214/26; C08F216/14
Domestic Patent References:
| JP2005320497A | ||||
| JP2009059690A | ||||
| JP2004534131A | ||||
| JP2019214641A | ||||
| JP2015147924A |
Foreign References:
| WO2003048214A1 |
Attorney, Agent or Firm:
Eternal patent business corporation