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. 31, 1993
Filed:
Sep. 19, 1988
Mutsuo Akao, Kanagawa, JP;
Toshio Sata, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Minami-ashigara, JP;
Abstract
In a container for a photographic film cartridge having a body and a cap fitted to said body, the improvement comprising that said cap is molded from a resin containing more than 20% by weight of a low-pressure linear low-density polyethylene which is a copolymer of ethylene and butene-1 and has a density of 0.90 to 0.93 g/cm.sup.3 and a melt index of 8 to 60 g/10 minutes. In the case of the molding resin for the cap of the invention, heat resistance is high, and this resin smoothly flow in a molding machine though temperature of the molten resin is relatively low. Accordingly, coloring troubles hardly occur, and molding cycle can be shortened. This resin is also superior in injection moldability, and molding troubles such as roping, camber, kink and deformation are rare. Mold shrinkage is also little. Since fitting strength of the cap and container body is large, the cap is scarcely detached during packaging process. Water vapor permeability of the resin of the cap is little, and moistureproofness of the container is high.