TWO-LAYER REINFORCING FABRIC FOR ELASTOMERIC COATING Russian patent published in 2014 - IPC D03D15/00 

FIELD: textiles, paper.

SUBSTANCE: two-layer reinforcing fabric for elastomeric coating is proposed, made with a two-layer double weaving of warp and weft yarns and formed by junction together of the layers by two weft yarns, transferring from layer to layer. In each complete weave rapport the connecting weft yarns are located in cooperating pairs, which being opposite to each other alternately from above downwards and from below upwards encircle the extreme warp yarns of the rapport of each background layer, grouping the warp yarns into bunches forming on both sides of the fabric the identical bulged embossed longitudinal stripes spaced from each other. The pitch of the longitudinal strips is determined by the equation: t=50Rw/Pw and their number per 10 cm of fabric width is equal to n=2Pw/Rw, where t is the pitch of the longitudinal strips, mm; n is the number of strips per 10 cm; Rw is complete fabric rapport on the warp, equal to 6 or 8; Pw is the number of warp yarns per 10 cm. The proposed two-layer reinforcing fabric is made on the shuttle, gripper shuttle looms or rapier weaving machines. For production of reinforcing fabric with higher rates of breaking load on the warp each warp yarn in 6 or 8-yarn weave rapport should be repeated 2 to 4 times. To increase the breaking load of the fabric on the weft to 60% of the breaking load of the warp yarns, between the background layers alternately with the connecting yarns two filling weft yarns are additionally located, each of which being laid between the layers, forms with the extreme warp yarns the virtual elements of the plain weave, located obliquely to the surface of the fabric in the form of the break catenary curve.

EFFECT: increase of reliability, durability.

2 cl, 4 dwg