METHOD OF OBTAINING FABRICS OF CHECKERED SHADOW WEAVES Russian patent published in 2019 - IPC D03D23/00 D03D21/00 

FIELD: weaving.

SUBSTANCE: method of obtaining fabrics of checkered shadow weaves consists in simultaneous placement of longitudinal and transverse strips on the area of rapport, in the repeat weave form four square cells with several longitudinal and transverse light stripes of the same width in each, the basic weave of the main class weft (twill or satin) or main (twill or satin) is accepted therefor to provide the type of initial light transition in the bands – from weft to main or from main to weft, and the direction of reinforcement of overlaps in steps; determine the number of filaments in the cells: where R_b – rapport of base weave; k – the number of bands in each cell; n_i – the number of repetitions of the rapports of the base weave in the i-th step of the original shadow weave; number k of the longitudinal light bands in the first cell is formed, direct light transition with the number of steps equal to R_b-1 is obtained therefor, and the number of repetitions of the rapport of the base weave in the i-th stage n_i times, then a reverse light transition is added to the forward light transition, representing a mirror reflection along the horizontal axis of a direct light transition without the first and last strands, changing the direction of the overlap of the ceilings in the weave steps to the opposite; repeat the obtained rapport light strip on the basis of k times; determine the number of repetitions of the received weave section as a smaller integer of the result of dividing n_repeat = N / R_b; repeat the resulting area for weft n_repeat times; after which the construction of the first cell is completed by adding to the interlacing above the number of rapport weft threads equal to N_ext. = N – R_b ⋅ n_repeat; to the interlacing of the first cell, add a second cell from above, obtained by rotating the first cell 90 degrees clockwise; to the right of the first cell is placed the third cell, identical to the second cell, on top of which is placed the interlacing of the fourth cell, identical to the first.

EFFECT: claimed invention allows to obtain fabrics of uniform structure, contributing to the reduction of their shrinkage after wet processing.

1 cl, 3 dwg