Method of manufacturing packing container having tear-up opening

Details Method of manufacturing packing container having tear-up opening Method of manufacturing packing container having tear-up opening

1983-07-29

1986-01-28

Simmons, David

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156227, 156252, 493 87, B29D 2310

Patent

active

045669287

ABSTRACT:
A tear-up opening arrangement for a packing container which is manufactured from a plane packing material web by folding is disclosed. The packing material is pierced through along a cut line which is situated alongside or in the vicinity of a base line of a sealing fin projecting from the packing container. The cut line is covered along the inside of the packing container by a thin, molecular-oriented plastic strip whose direction of orientation coincides with the extension of the cut line. The cut line has two end portions extending on either side of the apex of a triangular lug of the container and a center portion extending parallel to, but at a distance from, a line through the apex and the end portions.

REFERENCES:
patent: 3952940 (1976-04-01), Malcolm
patent: 4098406 (1978-07-01), Otten et al.
patent: 4248351 (1981-02-01), Berg

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