Scouring polyester/wool

The object of scouring polyester/wool blended fabric is not only to remove spin finishes, lubricating oils, sizes and contamination of all types, it also helps in fabric relaxation and parting the necessary compactness. Blended fabrics may also be pressed and flattened by any of the usual methods employed with all-wool cloth before scouring. 

Use Level 1-2 g/l (scouring cotton or polyester/cotton) 1-2 g/l (scouring synthetics) 2-4 g/l (scouring polyester/wool)... 

A worsted polyester/wool blended fabric is prepared by crabbing or blowing and then Scoured Dry Heat-set (on pin stenter) -> Brushed and Cropped Press or Decatise. 

Polyester/wool blends are very popular, the most common blend ratios are 55 45 and 70 30 polyester wool. Polyester rich blends are normally constructed from a texturised polyester fibre warp and 55 45 polyester wool weft yams. The 20 80 polyester/wool is woven from 55 45 warp and a pure weft yam. Worsted polyester/wool blend yams may contain 2.5 - 3% solvent extractable oil, compared with 3.5- 5% for similar all wool yams. The oils have much greater affinity for polyester fibre than wool and after normal piece scouring, the blends contain residual oil content of 0.6 - 1.2% compared with 0.3% for wool. Oxidation of combing oil is influenced by exposure to light which should be avoided before scouring. Addition of surfactant to combing oil improves the scourability of the blend fabric [75]. 

Compared with wool and cotton, the scouring procedures for synthetic fibres are relatively simple since these fibres contain fewer impurities. Most of these have at least some degree of water solubility the most important are sizes and lubricants. The major sizes used are poly (vinyl alcohol), carboxymethylcellulose and poly (acrylic acid), all of which are completely or partially water-soluble. Sometimes aliphatic polyesters are used. 

An MG latex has been suggested as an adhesive for bonding a woven synthetic fabric such as polyester to EPDM. It was necessaiy to clean the surface of the EPDM by solvent or scouring using wire wool and soap solution. A wet bonding technique with MGIO latex gave the best results with cohesive failure in the EPDM. 

Uses Scouring and wetting agent for natural and syn. fibers incl. cotton, polyester, nylon, wool... 

Uses Detergent and emulsifier for household, alkaline and heavy-duty cleaners, scouring agent for wool, cotton, polyester Properties Yel, liq, dens, 1,04 Ib/gal 91% act. 

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