Solvent scouring machines

Scouring of knitted goods, wool and blended woven fabrics in discontinuous rotary-drum washing machines has been established in many countries for a number of years. Equipment for continuous preparation and dyeing from non-aqueous solvent have been developed by several companies (Table 5.1). 

In Id s Markal process (Fig. 5-15) the dry cloth first passes through trichloroet- 

Another continuous solvent scouring machine for knitted and woven fabrics is shown in Fig. 5-16. The Bruckner Solvanit continuous process is used for simultaneous scouring, cleaning and for shrinking. The cloth is transported by a patented 

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The goods may be solvent scoured in rotary drum machine, restricting the load to 50% of the machine maximum capacity and the centrifuging time to 1 min to avoid the formation of pressure creases. Warp knitted fabrics are, in general, more stable to tension than weft knitted fabrics. 

For worsted yams, scouring can be conducted at a maximum temperature of 60 C for 30 min with 1 g/1 non-ionic detergent and 0.5 ml/1 acetic acid (80%). Woollen spun yams lubricated with oleine are scoured at 30 C with soap or synthetic detergent and sodium carbonate. The addition of solvent is sometimes advantageous for the removal of oils. Tape scouring machines are generally used for the scouring of hanks. 

Figure 5-16. Continuous solvent scouring and finishing machine (Courtesy of Sperotto Rimar, Italy).

Scouring machines of wool depend on the kind of wool to be scoured i.e. raw wool, hank form or woven fabrics. Scouring of wool can be carried out in batch or continuous process, aqueous or solvent media and rope or open width form. 

Detersd. [Finetex] Blei solvent scour, detergem for textile, wax and size removal, machine cleaning wetting and rewetdng t ent... 

Detersol. [Finetex] Blends solvent scour, detergent far textile, wax and size remove machine cleaning wetting and lewetting agent... 

Abrasive treatments consist of scouring, machining, hand sanding, and dry and wet abrasive blasting. The abrasive medium can be fine sandpaper, carborundum or alumina abrasives, metal wools, or abrasive shot. Mechanical abrasion is usually preceded and followed by solvent cleaning. The choice is generally determined by available production facilities and cost. 

Uses Solvent scouring agent, machine cleaner for textile industry... 

Uses Solvent scouring agent for textiles for removal of dirt silicone, stubborn solids, waxes, etc., suitable in jet machines emulsifler for removal of silicone oils and lubricants, and removal of silicone residue from machinery antiredeposition agent in scour/dye operations or in repairing spotted goods Features Mod. foaming compat. with most anionic, cationic, and nonionic prods, used in textile processing... 

Since knitting yams are unsized and usually combed to reduce seed and trash content , there is normally any need for treatment prior to bleaching. The knitting lubricants which replace the size on woven fabrics are usually self scouring, but sometimes from their very volume may create problems with foam and stains in wet processing or in the knitting machine which need to be treated with solvent containing auxiliaries. 

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