2010年9月10日星期五

Permanent press and other resins

If the fabric has been treated with a no-iron finish, or with a stain resistant coating, or with any sort of water repellant, dye will not be able to reach the fabric evenly, resulting in pale, uneven dyeing. A permanent press finish can be removed with muriatic acid, but the chemical is too hazardous to be suitable for home or studio use. Also, some after-dyeing dye fixatives,silk pajamas, which are invaluable for combatting the poor wash-fastness of direct dyes and all-purpose dyes, will afterwards prevent dye from reaching the fiber properly. This may present a problem in dyeing the many garments that have been commercially dyed with direct dye.

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