PROCEDE DE FABRICATION D'UN SACHET D'EMBALLAGE REFERMABLE

摘要

The method of making a re closable food bag involves shaping a layer of packaging film (1) and forming a lower transverse heat weld. The bag (11) is filled from the top and an upper weld made. The lower weld (14) is formed by impulse welding and the upper weld (16) is formed by continuous heat welding. The lower weld can be force cooled before filling of the bag.