TO STUDY THE EFFECTS OF ADHESIVE PARAMETERS ON MULTILAYERED LAMINATE PERFORMANCE

Abstract

Flexible packaging is now becoming increasingly popular due to their lightweight, cost saving, barrier and aesthetics. Today flexible packaging is being used in almost all the products including food items e.g. bakery, confectionary, snack food, oil, tea, coffee, milk, chewing tobacco etc and non food grade items like seeds, bearing etc. Flexible packaging laminates are being manufactured by printing and laminating the transparent, opaque or metallised films of PET, PP, PE, HDPE, LLDPE, PVC, PAPER, Aluminums Foils etc. The most common laminate in the converting industry is PET/METALLISED-PET/POLY; various types of adhesives are being used for laminating these films but polyurethane adhesives are most popular. In the present work, effect of various parameters on laminate performance has been studied. Two component polyurethane adhesives has been used in which hardener concentration, curing time, curing temperature are being varied. The effect of varying these parameters on bond strength, viscosity, GSM, etc. have been studied and sported.