Method for processing waste films and laminated films separated in the defibering process from the Tetra Pak type multi-material packagings intended for liquid food

摘要

the object of the application is processing waste film and foil laminated way isolated in the process rozwłókniania with multi material for liquid food packaging type of tetra pak.in which the polyethylene laminate is contained in pre dissolved in an organic solvent at a temperature of from 90 to 140°c forming solution and the insoluble aluminium foil is filtered.sedymentowana or centrifuged.the way is that in the process of dissolving the solvent solubility parameter is used for hansen's terms polyethylene between 5 - 7 in the form of acetate and amyl acetate, n-amyl,metyloamylo metyloizoamylo ketone, ketone, n - propyl isobutyl isobutyrate propanianu, or propanianu n - butyl, with low density polyethylene which is crystallised in powder form.