A drafting assembly and method of drafting a web

A drafting assembly for drafting a fibre web, the drafting assembly comprising: upper and lower rear apron loops having first and second support surfaces respectively being arranged to grip the card web fibres between them and transport the card web fibres from a rear entrance to a rear nip point on...

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Bibliographic Details
Main Author IYPE CHERIAN
Format Patent
LanguageChinese
English
Published 16.06.2010
Subjects
NATURAL OR ARTIFICIAL THREADS OR FIBRES
PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
SPINNING
TEXTILES
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Summary:A drafting assembly for drafting a fibre web, the drafting assembly comprising: upper and lower rear apron loops having first and second support surfaces respectively being arranged to grip the card web fibres between them and transport the card web fibres from a rear entrance to a rear nip point on displacement of the rear aprons; upper and lower front apron loops having third and fourth supportsurfaces respectively being arranged to grip the card web fibres between them and transport the card web fibres from a front nip point to an exit on displacement of the front aprons; the front and rear nip points being adjacent and arranged such that the front nip point receives card web fibres which exit the rear nip point; characterised in that proximate to the nip point each loop is wedge shaped with the arms of the loop on each side of the nip point converging towards nip point and having an acute angle therebetween.
Bibliography:Application Number: CN200580038546