Verfahren zur Herstellung von Behältern aus biegsamem Material mit mehrlagigen Wänden und praktisch aseptischer Innenoberfläche sowie ein daraus erhaltenes durchlaufendes Band von Behältern.

摘要

A method to implement a band of small bags made of flexible material having aseptic internal walls and suitable to be filled. The band of small bags may be wound in the form of a coil or concertina folded up to be successively utilized,in general, by a packaging factory who will provide to fill and seal said bags utilizing a very small filling machinery arranged in a small sized sterilized chamber. One of the basic features of the method consists in utilizing a flattened tube (4) of plastic heat sealable material, which is internally practically aseptic and which is transversally welded in equally spaced strips (30, 32) except in a central longitudinal coupled area. Opening cuts (54, 56) required for filling purposes are performed on a suitable packaging machine only into an aseptic ambient to protect the internal sterilized condition of the bags.