multilayer film for reclosable packaging with polyethylene layer obtained BY flat CO-extrusion

摘要

1) Multilayer film comprising: - an adhesive layer A constituted by an HMPSA composition (a); - a thin complexable layer B consisting of a composition (b) of a PolyEthylene (PE); and - a heat-sealable and breakable layer C consisting of a composition (c) of a PolyEthylene (PE); layers B and C being linked together by layer A and said film being characterized in that: (i) the flow indices of compositions (b) and (c), denoted respectively MFI (b) and MFI (c ), are each between 2.5 and 15 g / 10 minutes; and (ii) the flow index of composition (a), denoted MFI (a), is such that the ratios MFI (a) / MFI (b) and MFI (a) / MFI (c) are each included between 1.5 and 10. 2) Process for manufacturing the film according to 1) comprising the flat co-extrusion of composition (a) and compositions (b) and (c) at a temperature between 150 ° C and 250 ° C. ° C. 3) Use of the multilayer film according to 1) for the manufacture of reclosable packaging.