Comparative studies of global migration levels of recycled vs virgin polyethylene for packing and storage of milk.

Abstract

The use of Low-density polyethylene (LDPE) is increased for packaging and storage of food, milk etc. Virgin polyethylene is safe due to non-toxic, inertness and insoluble in milk. It is a replacement of conventional bottle packing of milk. Detection of contamination of milk contact of LDPE film in which milk was packed is being done by global migration method. LDPE films developed by well known technique i.e. Blown film extrusion technique, containing different ratio of virgin-recycled polyethylene materials as well as additives such antioxidants, filler, colourant etc. The impact of above LDPE films on the quality of milk was studied by global migration testing. After analyzing the observed results, it is found that the values of global migration increase with increase in percentage of recycled granules and percentage and type of additives in the film.