METHOD OF COLOURANT PERCEPTIBILITY IMPOSURE ON POLYOLEPHINE FILMS USED FOR PACKAGE AND STORAGE OF VARIOUS FOOD PRODUCTS, SUCH AS MILK

摘要

FIELD: chemistry. ^ SUBSTANCE: method involves film processing with gas mix of fluorine and nitrogen at fluorine concentration of 1 to 10 vol. %. Processed film is exposed to ammonia in aqueous solution or in gas mix for 10 seconds or less, with further film fanning with air. ^ EFFECT: possible application of plyolephine films with marks as package material for food storage due to neutralisation of hydrogen fluoride remaining at the film surface. ^ 3 cl, 5 ex