FIELD: manufacturing technology.
SUBSTANCE: material consists of a base component and a modifier containing 50–80 % liquid wax and an additive – the rest. When this modifier is injected into the main component in an amount to ensure its air permeability of less than 60 dm3/m2⋅s, and the additives are a mixture of resin of coniferous plants and vegetable oils in a ratio from 1:1 to 100:1.
EFFECT: invention ensures the preservation of the quality of the product when reusable material is used.
1 cl, 1 tbl
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