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.:
Date of Patent:
Aug. 09, 1994
Filed:
Dec. 24, 1992
Applicant:
Inventors:
Takahisa Hara, Kawanishi, JP;
Masahito Matsumoto, Osaka, JP;
Nobuhiro Usui, Osaka, JP;
Shigeyoshi Matubara, Osaka, JP;
Assignee:
Sumitomo Chemical Company, Limited, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ; B29C / ;
U.S. Cl.
CPC ...
2643287 ; 2643288 ; 26432811 ; 425562 ; 425574 ;
Abstract
Press molding is carried out by using a mold having a nozzle which opens and closes a molten resin passage provided in an upper half or a lower half and which is located 10-100 mm below a mold cavity side surface of the half, by supplying a thermoplastic resin to a cavity between the respective upper half and the lower half which is not closed and by clamping the mold. Thus, a molded article having a good appearance can be produced even when a molding cycle is short.