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:
Nov. 16, 1999
Filed:
Mar. 27, 1997
Showa Denko K.K., Tokyo, JP;
Abstract
A multi-layer sealant film having a high transparency, which comprises: (1) a high-density polyethylene layer comprising a high-density polyethylene having a melting point of not less than 122.degree. C. and a crystallization temperature of not less than 110.degree. C.; and (2) a polyolefin layer comprising a polyolefin having a crystallization temperature of not more than 109.degree. C., wherein the multi-layer sealant film is produced by co-extruding the high-density polyethylene and the polyolefin to form a multi-layer film, and the high-density polyethylene layer is used as a heat seal layer. Also disclosed are a multi-layer packaging film comprising the multi-layer sealant film having a transparent substrate on the side opposite to layer (1), and a pouch obtained by heat-sealing the packaging film so that layer (1) comes to be the innermost layer thereof.