logo

For the Inventor, By the Inventor

The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11207809 B1

PDFFull Text
Date of Patent:
Dec. 28, 2021

Filed:

Jul. 31, 2018

Method and apparatus for manufacturing foam molded body

Applicant:

Maxell, Ltd., Kyoto, JP;

Inventors:

Atsushi Yusa, Nagaokakyo, JP;

Satoshi Yamamoto, Suita, JP;

Hideto Goto, Muko, JP;

Assignee:

MAXELL, LTD., Kyoto, JP;

Attorney:

Oliff PLC

Primary Examiner:

Jacob T Minskey

Assistant Examiner:

Virak Nguon

Int. Cl.
CPC ...
B29C 44/34 (2006.01); B29C 48/00 (2019.01); B29C 48/92 (2019.01); B29C 45/77 (2006.01); B29C 44/42 (2006.01); B29C 44/60 (2006.01); B29K 67/00 (2006.01); B29C 48/605 (2019.01); B29C 48/25 (2019.01); B29C 48/29 (2019.01); B29K 101/12 (2006.01); B29K 33/00 (2006.01); B29K 69/00 (2006.01); B29K 23/00 (2006.01); B29C 48/58 (2019.01); B29K 77/00 (2006.01); B29C 48/53 (2019.01); B29C 45/47 (2006.01); B29C 45/60 (2006.01);
U.S. Cl.
CPC ...
B29C 44/3453 (2013.01); B29C 44/3446 (2013.01); B29C 44/422 (2013.01); B29C 44/60 (2013.01); B29C 45/77 (2013.01); B29C 48/0012 (2019.02); B29C 48/92 (2019.02); B29C 45/47 (2013.01); B29C 45/60 (2013.01); B29C 48/268 (2019.02); B29C 48/29 (2019.02); B29C 48/53 (2019.02); B29C 48/58 (2019.02); B29C 48/605 (2019.02); B29C 2948/926 (2019.02); B29K 2023/12 (2013.01); B29K 2033/08 (2013.01); B29K 2067/003 (2013.01); B29K 2069/00 (2013.01); B29K 2077/00 (2013.01); B29K 2101/12 (2013.01);
Abstract

A producing method for producing a foam-molded product by using a plasticizing cylinder having, from an upstream side in the following order: a plasticization zone, a flow rate adjusting zone and a starvation zone, the producing method includes: plasticizing and melting a thermoplastic resin into a molten resin in the plasticization zone; adjusting a flow rate of the molten resin in the flow rate adjusting zone; allowing the molten resin to be in a starved state in the starvation zone; introducing a pressurized fluid containing the physical foaming agent having a fixed pressure into the starvation zone so as to retain the starvation zone at the fixed pressure; bringing the molten resin in the starved state in contact with the pressurized fluid in the starvation zone in a state in which the starvation zone is retained at the fixed pressure; and molding the molten resin into the foam-molded product.

Find Patent Forward Citations

Loading…