Download Handbook of Textile Fibres. Volume 2 Man-Made Fibres by J. Gordon Cook (Auth.) PDF

By J. Gordon Cook (Auth.)

This booklet deals a accomplished survey of the man-made fibres, together with rayons and different typical polymer fibres, and the real artificial fibres that have made such speedy growth nowa days

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Additional info for Handbook of Textile Fibres. Volume 2 Man-Made Fibres

Sample text

The successful development of continuous spinning of viscose was made possible to a large extent by the design of mechanical devices which could hold immense lengths of filament in con­ tinuous movement as they passed through the processing train. Industrial Rayon Corporation Process During the 1930s, many firms experimented with continuous viscose spinning techniques. , which came into operation at Painesville, Ohio, in 1938. The problem of handling great lengths of filament during processing was solved by using thread advancing reels of ingenious design.

The problem of handling great lengths of filament during processing was solved by using thread advancing reels of ingenious design. e. not parallel to each other. When filament is fed to one end of a pair of moving rollers of this sort, and passed round the rollers as though round a pair of pulleys, the filament tends to form a spiral which moves along the pair of rollers until it reaches the other end. The direction of movement of the spiral, the distance between the coils, and the length of filament carried, depends upon the angle of skew between the axes of the two rollers.

5 g/den) wet. Tensile strength of normal viscose rayon is 2109—3234 kg/cm ( 3 0 , 0 0 0 46,000 l b / i n ) . 2 2 Elongation Normal viscose will stretch by about 17-25 per cent of its original length before breaking, and 23-32 per cent when wet. Elastic Recovery Cotton and other natural cellulose fibres have little inherent elasticity. Viscose rayon, however, has even less. It has a small elastic stretch of about 2 per cent from which it will recover when relaxed. But more persistent stretching will tend to cause permanent deformation as the long cellulose molecules slide over one another.

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