초록 ▼

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 c

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.

대표청구항 ▼

A method of manufacturing a plurality of packing containers, comprising: piercing a web of packing material with a plurality of cut portions to form a cut line, first and second cut portions being arranged along a common, straight line with an interruption therebetween, a third cut portion extending

A method of manufacturing a plurality of packing containers, comprising: piercing a web of packing material with a plurality of cut portions to form a cut line, first and second cut portions being arranged along a common, straight line with an interruption therebetween, a third cut portion extending along said interruption and parallel to and spaced from said first and second cut portions, and additional cut portions for joining ends of said third cut portion to a respective end of said first and second cut portions; covering said cut line with strip means; joining edge regions of said web of packing material to form a tube; pressing flat and sealing discrete regions transversely to an axis of said tube to form individual packing containers, wherein said cut line is so situated on said web of packing material that a boundary line of one of said discrete regions generally coincides with a center of said interruption so that when said indidvidual packing containers are formed the first cut portion of said cut line is in facing parallel relationship to the second cut portion of said cut line; and forming a triangular lug on each of said individual packing containers, said first and second cut portions of said cut line extending on either side of an apex of said triangular lug with said common, straight line of said first and second cut portions passing through said apex and said third cut portion of said cut line being spaced from said apex.