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MILLING ACID DYES Milling is the process in which a woollen material is treated in weakly alkaline solution, with considerable mechanical action to promote felting. Dyes of good fastness to milling are necessary to avoid bleeding of colour during the milling. Milling dyes have higher molecular weights and greater substantivity for wool than levelling or fast acid …
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Milling is a process used when felting and fulling wool which requires a lot of hot water and agitation, so dyes used on wool to be felted need to be especially wash fast. Their lightfastness varies. Their main draw back is that they do not dye quite as evenly as Leveling Acid Dyes so extra care must be taken in preparation of the dye bath to ...
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Milling is a process used when felting and fulling wool which requires a lot of hot water and agitation, so dyes used on wool to be felted need to be especially wash fast. Their lightfastness varies. Their main draw back is that they do not dye quite as evenly as Leveling Acid Dyes so extra care must be taken in preparation of the dye bath to ensure even results.
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Milling is the process of machining flat, curved, orMilling machines are basically classified as vertical or irregular surfaces by feeding the workpiece against a rotating horizontal. These machines are also classified as knee-type, cutter containing a number of cutting edges. The milling ram-type, manufacturing or bed type, and planer-type. Most
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Milling acid dyes have a greater substantivity for the fibre than levelling dyes, and therefore have poorer levelling properties. These dyes have better fastness properties than levelling acid dyes, and have reasonable wet fastness, particularly if alkaline milling is to take place in a subsequent process.
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A die is a specialized machine tool used in manufacturing industries to cut and/or form material to a desired shape or profile. Stamping dies are used with a press, as opposed to drawing dies (used in the manufacture of wire) and casting dies (used in molding) which are not.Like molds, dies are generally customized to the item they are used to create.
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Forced wetting processes (in non-wetting conditions) require the application of external force, and spontaneous de-wetting will take place when the force is removed. Thermodynamic condition for wetting requires the work of liquid/solid adhesion (Wa) to be as high as possible and, for unlimited wetting, at least more than a half of the work of cohesion (Wk) is required: Wa> Wk .
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These dyes have better fastness properties than levelling acid dyes, and have reasonable wet fastness, particularly if alkaline milling is to take place in a subsequent process. Super milling acid, or neutral dyeing, dyes are applied in a similar way to milling acid dyes, except that greater control over the strike rate of the dye is exercised.
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Dye Manufacturing Industry Description and Practices This document discusses the synthesis of dyes and pigments used in textiles and other indus-tries. Dyes are soluble at some stage of the appli-cation process, whereas pigments, in general, retain essentially their particulate or crystalline form during application. A dye is used to impart
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The savings in energy and the increase in grinding efficiency provided by Attritors are substantial. The graph below compares various mills during the high energy ball milling process. Select a link to learn more about these Attritor-style stirred ball mills: Dry Grinding – Continuous or Batch Mode. Dry Grinding – Continuous Mode.
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Flow Chart of Cotton Dyeing Process. January 19, 2021. April 30, 2015 by textile-flowchart. Cotton is a soft, fluffy staple fiber. It is a natural and most popular fiber. Cotton is dyed with a range of dye types, including vat dyes, and modern synthetic reactive and direct dyes. The flow chart of cotton dyeing process of cotton is given below.
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Textile Dyes. DyStar is the world's leading supplier of textile dyes. We have by far the broadest product range on the market, covering almost all fibres and quality specifications. All our products comply with international legal requirements and we offer product lists of our brand & retailer RSL (Restricted Substance List) compliant products.
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Wet processing technology and its uses are huge in textile sector. Dyeing process for different textile materials could be different but its basic idea is same for all. For all types of dyeing pre-treatment is must for removing unwanted materials from textile materials. Pre-treatment style differs for the shade of dyed materials.
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