FIELD: manufacturing technology.
SUBSTANCE: invention relates to bag paper and its production. Bag fabrication method involves stages where unbleached cellulose is mixed with bleached cellulose to produce a mixture of cellulose and sack paper is formed from said cellulose mixture. Starch is added in amount of 1–7 kg/t of paper. Ratio of weight in dry state of unbleached cellulose to weight in dry state of bleached cellulose in mixture of cellulose ranges from 7:1 to 1:1. Produced paper has porosity by Gurley method (according to ISO 5636-5) of less than 25 s.
EFFECT: improved degradability of bag paper.
27 cl, 1 dwg, 5 tbl
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