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. 22, 1994
Filed:
Jul. 19, 1991
Giancarlo Montesissa, Robbio, IT;
Giovanni Prella, Vercelli, IT;
Nestec S.A., Vevey, CH;
Abstract
A flexible liquid impermeable package is in the form of a tubular bag and has a tear-strip for opening the bag. The bag is made of monoaxially or biaxially stretched polyolefin film, and has opposed transverse welds and a longitudinal weld which is parallel to a stretched orientation of the film for sealing the bag. The tear strip is heat-welded to an outer surface of a wall of the bag, disposed away from and parallel to the longitudinal weld. The tear strip is made of polyolefin, and has a thickness greater than the thickness of the polyolefin film of the bag. The invention relates to a flexible liquid-tight bag intended for a liquid food product or a food product containing a solid product immersed in a liquid, comprising a tear strip for easy opening of the bag with no spurting of liquid. The tear strip is applied by heat sealing to the outer surface of the bag in the stretching direction of the constituent film of the bag.