The object of this paper is to report the development and testing of a new packaging film that increases the storage term of food and agricultural products, expands the functional possibilities of film packaging and improves product quality. To achieve this, the polyolefin polymeric packaging film is produced with a structure varying across its thickness with a density gradient ranging from ½p to ¼p, where p is the density of the polyolefin. The packaging film is a system in which the communicating pores are filled with specific additives in a liquid phase.
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Goldade et al. (1995) studied this question.