Speed frame is also called as simplex or roving frame. The speed frame process minimizes the sliver weight to a suitable size for spinning into yarn and inserting twist, which maintains the integrity of the draft strands. It is impossible to feed the sliver to ring frame for yarn production due to limitation in draft in ring frame.

Colours have always fascinated man and right from the pre historic times he has always tried to use colour in whichever way possible in his life. Initially they were extracted from nature (i.e., from flowers, fruits) and these colours were known as the natural colours. He had been using various means to decorate the clothes he wore and here the chief source of colouring matter, until about a century ago, was natural colours especially the ones obtained from nature. These natural colours were initially used to dye natural fibres like cotton, wool, linen, silk etc. With the advent of...

Since their introduction in the 1950s reactive dyes have shown rapid growth; even today, developments are taking place. The combination of brightness, fastness and ease of application associated with reactive dyes enables this class of dyes to be the major class of dyes used today to colour cellulosic fibres.

New Age Fibres For High Performance Applications

In the spinning process, the unevenness of the product increases from stage to stage after the draw frame due to the steady decrease in number of fibres in the section. Uniform arrangement of fibres becomes more difficult because of their smaller number. Drawing is the important process where the card slivers are doubled and drafted in order to level the unevenness present in each sliver. Doubling is the combining of several slivers and drafting is attenuation. Drawing therefore involves the processes of drafting and doubling, with good fibre control being of the essence throughout.