Moire
Moiré is the trade name for various textiles that have a distinctive, optical structure. What is wrong is that moiré is a particular material, since moiré patterns can be found both in velvet and silk as well as in viscose or industrially manufactured synthetic fibers. In German, the striking patterning of a fabric with moiré is referred to as a grain, which is based on the natural grain of wood in appearance. The optics is not permanent, but changes depending on the movement of the tissue and its more or less smooth display. For the production of moiré, it is necessary to superimpose two layers of the same fabric and press them together, as is done industrially today by rollers specially designed for this purpose. Even with fabrics that originate from the same industrial production, the look is never 100% identical, so that the optically iridescent effect is created by minimal deviations in the tissue. For a few decades, another, cheaper way of moiré production has been established, this simply an already predetermined pattern is pressed onto a single-layer fabric. In addition to fabric can also produce paper with moiré effects, this artful paper is used with its eye-catching shape in floristry as in the craft area.