METHOD OF PRODUCING DICE CHECK FABRICS Russian patent published in 2018 - IPC D03D23/00 D03D21/00 

FIELD: textile.

SUBSTANCE: method of producing dice check fabrics consists in the formation of a pattern in the form of pseudo-volume figures of the second order by changing the dimensions of the individual pieces in the rapport of the initial dice check, preset by the color of the threads of both systems, the base dice check, the sizes of the initial checks along the strings of both systems and the number of their pairs, calculating the interlace rapports, forming a model of the initial dice check with the subsequent imitation of the deformation of the check pattern on the fabric and obtaining a rapport of the deformed dice check, while in the interweaving rapport a section is formed with one or several or convex, or concave, or convex with concave hemispheres simultaneously, for which, given the color of the threads of both systems, specify the basic dice check and the matrices of their description, the number, type and coordinates of the centers c = [x_o, y_o] of hemispheres, radius r of each hemisphere, width S_o and the height S_y each checker, the number of their pairs in width n_o and height n_y in the interweaving rapport; define interweaving rapport: R_o = 2S_o ⋅ n_o (1), R_y = 2S_y ⋅ n_y (2) find the coordinates of the color change of the checks (number of threads) on the basis and by the weft: [N_o]: 1, S_o + 1, 2S_o + 1, 3S_o + 1, …, R_o; [N_y]: 1, S_y + 1, 2S_y + 1, 3S_y + 1, …, R_y we obtain a color matrix of the points of the original check field D (R_y, R_o) with elements, the corresponding checks of black color equal to one, white, equal to zero; on the rapport plane they build a model of the original check pattern with the given sizes of pieces, color the points of the pattern in black or white in accordance with the values of the elements of the matrix D(R_y, R_o); form two interweaving matrices A(R_y, R_o) and B(R_y, R_o); obtain the matrix G(R_y, R_o) of the distances from each point of the figure in line x and column y, to the center of the hemisphere in expression of (3) points, the distance from which to the center of the hemisphere is less than its radius, located inside the hemisphere and painted in a given color, transfer to a new position, leaving the angle with respect to the center as before; the elements of the matrix GN(R_y, R_o) of new distances from each point of the figure to the center of the convex hemisphere according to expression (4), concave – according to expression (5): (4), (5) for points of the check picture, which changed their position, define new coordinates on the [xn, yn] field, for other points the new coordinates are equated with the old ones: (6) determine the values of the elements of the matrix DN(R_y, R_o) of the new color of the checkpoint fields: for each pair of new coordinates [xn, yn] find the nearest pair of initial coordinates [x, y], element of the matrix DN (x, y) is assigned the value of the matrix element D (xn, yn); according to the matrix DN (R_y, R_o) in the rapport plane, they construct a model of a deformed check pattern with an imitation of the hemisphere; in accordance with the values of the matrix elements DN (R_y, R_o) form a matrix C (R_y, R_o) weave: for elements of the i-th row of the i-th row of the j-th column of the matrix DN (i, j), the elements of the matrix C (i, j) are assigned to the elements of the matrix C (i, j); for zero ones, the matrix B (i, j); according to the matrix C (R_y, R_o) we get an interlacing of the fabric: the overlap, corresponding to the elements equal to one, is assumed to be basic, equal to zero – weft.

EFFECT: method makes it possible to expand the assortment of fabrics of combined weaves by obtaining on their surface a visual effect of one or several voluminous convex or concave hemispheres due to distortion of the shape and size of the individual pieces with their unchanged number in the rapport of the initial dice check weave on both yarn systems.

1 cl, 11 dwg