textilescience2[1] - 4/18/05 Finishing- final processing...

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4/18/05 Finishing- final processing before the fabric is cut into apparel or made into articles such as towels, curtains, or draperies. This is what makes the fabric more suitable for their intended use. CLASSIFICATION OF FINISHES 1. Permanent finishes a. A chemical change in fiber structure – do not change or alter throughout the life of the fabric 2. Durable finishes a. Last a long time, but effectiveness diminishes gradually by each cleaning—near the end of the normal-use life of the article, the finish is nearly removed 3. Semidurable finishes a. Last through several launderings or drycleanings and many are renewable in home or laundering or drycleaning 4. Temporary finishes a. Removed or substantially diminished the first time an article is laundered or drycleaned Foam Finish o Finishes are applied from water based solution, solvent or foam o Application of foam: a. Printing b. One side of fabric c. Both sides at the same time o Type of finishes by foam: a. Durablepress b. Water repellency c. Soil release d. Softeners e. Mercerization o Fabric stabilizers Basic routine finishes: o Singeing and desizing o Bleaching and scouring (boil off) o Tentering o Mercerizing o Calendering or pressing o Inspection Singeing and desizing o Singing uses open flames or heated plates to remover protruding ends of fibers Fabric is brushed and fed onto heated area open width (fiber type?) after singing, fabric enters desizing bath
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desizing uses: o enzymes and detergents o acid and detergents o solvent and detergents Scouring and bleaching this is to prepare fabric for dyeing, printing, and finishing or to make the fabric white boil off- used for cotton and its blend, silk and manufactured fibers scouring- used for woolens and worsted scouring/boil off removes: natural waxes dirt processing oils sizing chemicals soaps or detergents and alkaline builder are used for cellulosic fibers acidic scouring for protein fibers (why?) solvent scouring is to remove oils that were used for lubricating and softening yarns and to reduce static during knitting bleaching removes color type of bleach: sodium hypochlorite hydrogen peroxide perborate silfur dioxide o the first 3 are oxidation agents, the last is a reduction agent
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This note was uploaded on 03/29/2008 for the course SOHE 251 taught by Professor Sarmandi during the Spring '08 term at Wisconsin.

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textilescience2[1] - 4/18/05 Finishing- final processing...

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