Spinning materials

>> What are textile materials for spinning? >> Why fleece wool is defined as grease wool? >> How are wool types used for spinning graded? >> Which are the most typical wool types? >> Are there other animal fibres that are processed as wool is? >> What is the difference between artificial and synthetic fibres?

Working processes

>> Are all fibres worked using the same process? >> What characterise wool processing? >> Which are the main phases of wool processing? >> Why do you make wool sorting and scouring? >> What does scouring yield mean? >> What amount of residual grease is tolerated on scoured wool? >> What is the carding process? >> What does worsted wool mean and why is wool combed? >> What is the meaning of combing blousse and duvet? >> What is the meaning of the term 'romaine' referred to the combing process? >> Why should you make pre-combing preparation? >> What is the meaning of draft and draft passages? >> How do you express draft value? >> What are the effects of draft? >> What is draft gauge? >> What are fluctuating fibres? >> What is the meaning of the head-and-tail effect of fibre slivers? >> What are the doublings? >> How do long fibre control systems operate? >> Which wool draft frames are defined as intersecting? >> What do we mean by comb population? >> How is wool flock-to-top processing? >> How is top-to-preparation processing? >> Why is blending done? >> Why is the after-blending passage known as a reducer passage? >> Why and how do you oil fibres (ensimage)? >> Why are some drawing frames passages fitted with a self-regulator? >> Why do you make three or four preparation passages? >> What are elastic control systems? >> Which are the main characteristics of fibres meant for spinning? >> How do you establish fibre fineness? >> Why do you talk of fibre or yarn count? >> What do you mean with fibre spinning fitness?

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