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:
Sep. 03, 1996
Filed:
May. 30, 1995
Tatsuo Fujii, Saku, JP;
Kimio Tanaka, Saku, JP;
TDK Corporation, Tokyo, JP;
Abstract
A method for making plastic case blanks is disclosed. A molten plastic material is passed through a nip of a first, preforming pair of molding cylinders to form a semi-solidified sheet having a first thickness, The semi-solidified sheet is then molded to form a final sheet having a second, uniform thickness less than the first thickness and the final sheet is scored to form folding scores and cut to form a plurality of the blanks. The molding, scoring and cutting are simultaneously performed by passing the semi-solidified sheet through a nip of a second pair of cylinders. One of the second pair of cylinders has scoring means for forming the folding scores in the final sheet and cutting means for cutting the final sheet to form the plurality of the blanks and the other of the second pair of cylinders has recess means complementary to the cutting means for receiving the cutting means and effectuating the cutting.