slovenski

Napovedovanje barvnih vrednosti žakarskih tkanin

Jacquard fabrics have the patterns of different sizes and various designs on their surface. These patterns differ in structure - the weave and also in colour if they are made of differently coloured threads. Modern CAD systems enable simulation of a Jacquard fabric surface on computer monitor and its printout prior to weaving. However, due to varying quality of simulations, different types of printers and not always precisely determined constructional parameters of a fabric, differences between the colour values of the printed simulations and the colour values of the real fabrics occur. In this paper theoretical calculations for predicting the colour values of Jacquard fabrics are presented. The differences between the calculated colour values and the colour values of the simulations and of the real fabrics measured spectrophotometrically are estimated. First of all spectrophotometric measurements of the colour values of the used threads were carried out. Then theoretical calculations of the colour values in particular effects of a Jacquard fabric were made on the basis of these values and known constructional parameters. A computer simulation was made and then a fabric was woven with the same constructional parameters. The theoretically predicted - the calculated colour values, the measured colour values of the simulations and of the real fabrics were compared. Key words: colorimetry, woven fabrics, simulations, colour values predicting, colour differences &#61623 ; GABRIJELČIČ, Helena, DIMITROVSKI, Krste. Influence of weave on colour values of woven fabrics. V: KATALINIĆ, Branko (ur.). Annals of DAAAM for 2002 & Proceedings of the 13th International DAAAM Symposium "Intelligent Manufacturing & Automation: Learning from nature, Wiena, University of Technology, 23-26th October, 2002. Vienna: DAAAM International, 2002, str. 173-174., ISBN 3-901509-29-1 Abstract: Colour values of woven fabrics made of differently coloured threads depend upon their number, their colour values and the fabric constructional parameters - the threads fineness, density and weave. Only the influence of weave is not precisely defined. That means that the fabrics with identical parameters but different weaves have different colour values on their surface. In this paper we will try to find out by means of spectrophotometrical measurements of computer simulations printouts to which extent colour values deviate, which colour values they are expressed through and what they depend upon. The measurements are carried out on plain weave, which is considered as a standard, reference fabric as well as on other plain-like reversible weaves.

constructional parameters; influence of weave; colour values; colour differences

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