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:
Dec. 25, 1990
Filed:
Nov. 30, 1988
Takeshi Takahashi, Kanagawa, JP;
Yoshitsugu Hamada, Kanagawa, JP;
Showa Denko Kabushiki Kaisha, Tokyo, JP;
Abstract
A method of producing printed containers for retortable material comprising subjecting the outer surfaces of sheets or container of polyolefin to a flame treatment to produce a wet index of 45 dyne/cm or higher and then printing the outer surfaces. The polyolefin used comprises an olefin polymer compound comprising a mixture of (a) 100 parts by weight of a crystalline propylene polymer having a melt flow index of 0.1-100 g/10 min and (b) 3.0-30 parts by weight of an ethylene polymer having a density of 0.925-0.975 g/cc and a melt index of 0.1-20 g/10 min; or an olefin polymer compound comprising a mixture of (a) 100 parts by weight of a crystalline propylene polymer having a melt flow index of 0.1-100 g/10min, (b) 3.0-30 parts by weight of an ethylene polymer having a density of 0.925-0.975 g/cc and a melt flow index of 0.1-20 g/10 min, and (c) 2.0-25 parts by weight of an ethylene-propylene copolymer rubber having a Mooney viscosity (ML 1+4.multidot.100.degree. C.) of 140 or less and containing 20-70 weight percent propylene.