FIELD: process engineering.
SUBSTANCE: invention relates to filter packing bans 10, in particular, double packing from laced and twisted filaments making at least two band parts 12a, 12b connected by area 11 of lower lacing density. Note here that binding filaments 13 are hooked in loop-like or hook-like manner to produce intersections 14. Note also that at 20 cm-long band section 10 maximum crosswise separating force for band parts 12a, 12b does not exceed 20 cN. Or, quantity of binding filaments 13 at 20 cm-long band section 10 does not exceed 200 filaments with crosswise loop-like or hook-like binding at application of maximum separating force to filter packing bans 10.
EFFECT: simplified design.
18 cl, 10 dwg
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