Patent DE-10159971-A1 (DE)
Title: For weaving fabrics with non-floating color patterns, using single-color warps, the wefts are used in combinations of three colors from a digitized image model converted into a suitable matrix
Inventor: ZSCHENDERLEIN DIRK
IPC: D03C19/00
Filed: 2001-12-06
Abstract: To produce woven fabrics with non-floating colored patterns, warps and wefts in different colors are used in a variety of combinations to give the required effects. The warps are in a single color, and the image points are arranged in a digitized color image model to give a matrix of all the virtual color weaves for the fabric, with warps and wefts in free selection dimensions. The variants for the possible weaving of wefts into the warps for the virtual color weaves are formed into a weaving catalog by different virtual color values, to be matched against the digitized model, to give the weaving pattern for the fabric without surplus and floating lengths in the separate warps and wefts. The pattern is used to weave the fabric at the loom  To weave fabrics, with colored patterns, the virtual colored weaves are shown by the variation of all the possible weaves between the multi-colored warps and wefts and/or their mixtures and/or with optical surface layers with modified yarn systems, to give a freely defined matrix of numbers of warps and wefts. The wefts are in three colors of violet (magenta), turquoise (cyan) and yellow and/or red, green and blue. Or the wefts are in three colors in combination with additional black and/or white wefts. The warps are white and/or black. The effective color values of the colored wefts are taken into account from the virtual color values of the virtual colored weave, if the values deviate from the ideal basic colors. The virtual color weaves are arranged in a digitized image model by color values. The color weaves are arranged into a unified matrix size of warps and wefts, exclusively of virtual color weaves, using a pattern draft process or a weaving catalog. Each image point of the digitized image model gives the virtual color weave from the matrix, to be transferred to the fabric. From the virtual color weaves of several structure classifications in the weaving catalog, zones of the digitized image model are taken with the exclusive structure classification of the virtual same-color weaves by the arrangement of the digital image point, with the aim of an additional structuring of the fabric color design and/or the coupling of color design data for the fabric. The dimensions of the matrix of warps and wefts are taken for the construction of the virtual color weaves of the weaving catalog, to set the maximum length of floating warps and wefts. All the virtual color weaves for a weaving catalog are produced using the set dimensions of warps and wefts in the weaving matrix, with at least one change point in each column and row, to give the required virtual color effects in the woven fabric. Colored weaves with the same color are divided into structural classifications and/or converted into a quadrilateral matrix, by filling a matrix gap in one column with upper warps and a matrix gap in another column with lower warps and suitable combinations in the other columns. The matrix rows are turned to give a different value for each row and show the possibilities for turning the matrix rows for the classifications. A weaving catalog is constructed by the selection of one and/or more structural classifications in the weaving catalog of virtual color weaves and/or different matrix sizes, to convert a digital image model into a Jacquard database. The transfer to a Jacquard database uses a pattern draft process, or the matrix can be used when they are all of the same dimensions. The virtual color weaves in the weaving catalog are arranged systematically into a matrix, by structural classifications. The different virtual color weaves with the same virtual color value are arranged into different structural classifications. The structural classifications are used to give the color pattern at the fabric surface an additional structure. The selection of structural classifications allows their use in zones of the woven fabric through coded data. The system can be used to weave double fabrics, where the outer surfaces of each have a different color pattern structure woven into them. If the basic colors are inverted, an additional black weft is used. If light colors are to be used at the two surfaces, of the double-weave, the virtual color weaves of the weaving catalog based on inverted basic colors are used and, for the dark shades, the virtual color weaves are taken using the basic color range.