| Abstract [eng] |
At present, multilayer flexible packaging is a rapidly improving type of packaging and these materials are used in various food packaging items. Various polymers are used in the production of these materials- to provide good barrier to grease, oxygen, good thermal conductivity and other required properties etc. Grease barrier plays a key role in high-fat content products. A wide range of barrier properties is exhibited by materials, such as a polyethylene layer, a thin layer of Al or other polymer materials. They are few basic methods which determine the resistance of package to grease penetration and many methods give the best quality measure of grease penetration. Multilayer films which can be recycled are integrated with packaging and simple process is used for determining grease barrier properties of high-fat content product films and these test results of several multilayer films are presented to describe the effectiveness of these films. Multilayer butter packaging materials are used in the work, subjected to grease penetration (rapid method), delamination and peel test. The results for show good resistance to grease penetration and only for creased materials have defects this results in grease penetration. The results of the delamination study showed that these packing material delaminates at 40° C. The results and conclusions are shown at end of the work. |
