Technical criteria of fabrics
... Technical criteria of fabrics The raw materials control implies a good knowledge of the technical criteria of the fabrics. ... There are 7 great families of criteria: 1. Verifiable criteria on receiving the fabrics 2. ... Aspect permanence criteria with use 4. Aspect permanence criteria with care 5. Colour permanence criteria with use 6. Colour permanence criteria with care 7. Criteria related to the special characterisations (cf version 2) II. ... Verifiable criteria on receiving the fabrics The criteria that are verifiable during the visit, are : Length: It is the length of a piece of fabric. ... Aspect permanence criteria with use: • Abrasion resistance: The fibers of the parts of the garment the most subjected to frictions, break. ... The fabrics and knittings made up of textured thread are particularly sensitive to the snagging. ... Aspect permanence criteria with care • Washing dimensional stability: When fabrics are subjected to a care treatment, a modification of their dimensions can occur. ... • Dry cleaning dimensional stability: When fabrics are subjected to a care treatment, a modification of their dimensions can occur. ... • Felting: The wool fabrics subjected to a shake in the presence of water can take the aspect of the felt, the wool fibers get entangled each other. ... Colour permanence criteria with use • Light colour fastness: After exposure to the light, the colour of a fabric can alter. ... standard in force): fabric test specimen, on contact with standard fabrics, are treated in 2 solutions of synthetic perspiration (acid/alkaline) then drained and put between 2 sheets, under a specific pressure, in a test apparatus. The fading of each test specimen and the bleeding on the standard fabrics are evaluated with a grey scale. ... This bleeding can occur between dry or wet fabrics. ... • Water colour fastness: The prolonged contact of a wet fabric with other fabrics can provoke colour bleedings (poor water resistance). ... standard in force): the fabric to be controlled is wet with water, then maintained in prolonged contact with standard fabrics under specific conditions. This enables you to estimate the colour fading and the bleedings produced on the standard fabrics. ... • Sea/Chlorine water colour fastness: Some colours (wet with sea/chlorine water) can be shaded or can bleed on the fabrics with which they are in contact. ... standard in force): the fabric to be controlled is wet with sea/chlorine water, then maintained in prolonged contact with standard fabrics under specific conditions. This enables you to evaluate the fading and the bleeding on the standard fabrics. ... Colour permanence criteria with care • Washing colour fastness: You have to dimension the colour fading and its bleeding on standard fabrics during a washing operation.