Patent ID: 9321248
Filing Date: 2016-04-26
CPC Classification: B32B,B65D,Y10T

Claim Text:
1. A packaging composite film with an outside and an inside, the packaging composite film comprising: a cover layer facing the outside; an inner layer facing the inside, said inner layer having a lower puncture and tear resistance than a puncture and tear resistance of said cover layer, said inner layer having a first end and a second end, said inner layer extending continuously, without interruption from said first end to said second end; and a liquid-soluble intermediate layer arranged between the cover layer and the inner layer, wherein liquid-transporting openings completely penetrate at least the cover layer and extend in a direction of the inside at least to the intermediate layer for transporting liquid from the outside to the liquid-soluble intermediate layer, said inner layer being free of openings, said inner layer being completely untouched by said liquid-transporting openings, whereby said liquid-transporting openings do not penetrate said inner layer, at least said cover layer, said inner layer and said liquid-soluble intermediate layer defining a packaging composite film structure, said inner layer, said cover layer and said liquid-soluble intermediate layer extending from one side of said packaging composite film structure to another side of said packaging composite film structure.