Bag of synthetic flexible material having a tab of heat-sealable foil to open it.

摘要

1. Sachet of flexible synthetic material of the type obtained by suitable folding of a single film of synthetic material, or from two strips of film, and welds forming the different sides of the sachet, comprising, along one weld line and in line with the region of the sachet where the pouring opening must be formed, at least one narrow strip of a bilateral thermo-sealing film interposed between the two film thicknesses connected by the said weld line, characterised in that the narrow strips (16) possess in their central part a curvilinear section possessing a high point (17) outside the weld line.