Spinning Process
- Introduction to spinning, raw material as a factor influencing spinning systems
General principles of spinning, processing objectives, spinning methods
- Textile product numbering (direct & indirect systems)
Yarn manufacturing calculations, roller and package surface speed, drum drive, belt drive, gears and pulleys with teeth, practice problems
- Attenuation (draft), roller drafting, calculation of draft, practice problems.
- Raw material (in short-staple spinning), material from bales (raw fibres), recycled fibres(from waste), quantity of waste in the spinning mills, practice problems
Blowing, introduction, summary of the process, the components of blowroom machines
- . Blowing opening & cleaning drives, cleaning efficiency blending machines, dust removal, transport of material calculations (draft, production, blow per inch & lap measuring derives).
- Carding introductions, tasks of the card, operating regions of the card, card clothing, automatic flock feeding (chute feed), practice problems.
- Combing, introduction, tasks of the comber, combing preparation, combing cycle and comber mechanisms, technical data.
- Drawing process, purpose of drawing, main parts of the drawframe, technical data, calculation of infeed material to drawframe.
- Reducing stage, introduction, description of functions, the operating regions of the roving frame, twist insertion, calculation of twist, practice problems.
- Spinning operation (the ring spinning), description of the ring spinning machine, twist insertion, calculation of twist, technical data, spinning timit, practice problems.
- Long-staple fibre spinning, introduction, general practice, spinning systems, processing objectives, raw material.
- Sequence of worsted, woolen and semi-worsted processed, worsted topmaking, worsted drawing & yarn manufacturing, worsted carding, intermediated gilling.
- Worsted combing, top finishing, recombing, worsted drawing, rubbing finisher and worsted spinning operation, spinning limit.
- Woolen spinning system, introduction, blending & oiling, woolen carding & condensing, woolen spinning operation.
- Semi-worsted spinning system, carding, gilling, spinning operation, spinning limit.
- Unconventional spinning, rotor spinning, friction spinning, air-jet spinning, solo, siro and compact spinning methods