Shihlin dyes jigger white core products, sewing clothes pin point scab in crude solutions

2010-02-18  来源:本站原创  分类:Industry  人气:205 

Keywords: Shilin dye jigger, will produce "white core", which is dip dye Shilin (jigger, rope dyeing, hang dyeing), the inherent problems, it is difficult to solve, can only improve. Have a "white core" of the main reasons: 1, Shihlin dye leuco after reduction in the dye bath in the pool of serious, large adsorption on the fabric. 2, Shihlin leuco dyes on cellulose fibers (cotton, linen, etc.) and affinity (dye strength) is high. 3, Shihlin dye jigger bath, the electrolyte (caustic soda, insurance powder) were higher on the Scholastic dye leuco dye, a strong role in promoting transfection. For these reasons, Shihlin dye jigger, the initial uptake rate is high, the dye adsorbed on the fabric surface, the surface will hinder the fiber to fiber within the dye diffusion (through the dye), plus leuco dye staining Shihlin inherent dye transfer poor, poor diffusion problems, therefore, the surface stain is serious, "white core" outstanding. Improvements: 1, added to slow in the dye bath dye Peregal O or emulsifier OP0.15 ~ 0.30 g / l, on the part of the dye significantly retarding through contamination. Such as: reduction of Brilliant Green FFB, restore Brilliant Green 2G, restore Brilliant Green 4G, restore Yan Ching Lin 2R, Gray M, restore. But pay attention: ① slow addition of dye, it reduces the tendency of color yield, therefore, the amount is not excessive. ② different effects on different dyes, a pool of individual dye precipitation phenomena. ③ not charged with the yin with the use of additives, or the effect will disappear. ④ not yet liquid in the pre-accession can only join the dye bath. 2, in the dye bath by adding 1-2 g / l glue (hide glue or baking powder generic) or glue, on the part of the dye is also a significant retarding through contamination. Such as Vat Blue RSN, Vat Blue GCDN, reduction bleaching blue BC, restore Khaki 2G, Vat Yellow GCN so. 3, semi fabric before dyeing and bleaching treatment to strengthen, to ensure strong and uniform water absorption, which is to improve the effect of leveling through the dye is also important. This carried over: http://database.texnet.com.cn/db-technology/detail--1838.html

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