material for flexible packaging for opening easier and process for obtaining such packaging packaged with or without a product

摘要

The base material is a coextrusion formed from at least two layers, one being a support layer of polyolefin (such as polyethylene or polypropylene) and the other a contact layer based on modified polyolefin, the contact layer, which has the property of easing the opening of the flexible package, having a softening point (VICAT point) less than that of the support layer. The flexible package is prepared with said material by welding it at different temperatures so as to eliminate the easy-open property of the contact layer in the longitudinal and base welds (and possibly in part of the mouth weld), while preserving this property in the total or remaining mouth weld. IMAGE