DUCK FABRIC Russian patent published in 1996 - IPC

FIELD: risque facilities. SUBSTANCE: duck fabric is made from polyester complex core and filling threads interwoven so that through cells are formed and has thermoplastic water-impermeable coat of polymeric material. Fabric is made of 2/2 basket weave with surface density of 40-100 g/sq.m and thickness of 80-250 microns. Core cells size is 0.3-0.4 mm, filling cells size is 0.35-0.55 mm. Core and filling threads have designed linear density of 8.0-16.0 tex, twisting density of 200 plus-minus 20 twists per 1 m and diameter ratio of elementary and complex threads 1:12-36. EFFECT: increased adhesion, rupture and tearing strength, reduced material usage. 1 tbl