Raising is a permanent mechanical finishing process of lifting a layer of fibres from the body of the fabric which stand out from the surface. Raising may be done either in wet stage (for woolen) or dry stage (for cotton). For example,
i) Funnel fabric (woven raised fabric)
ii) Fleece fabric (knitted raised fabric)
Raising causes a ‘Lofty’ handle effect on fabric.
Objects of raising:
The objects of raising are mentioned below:
i) To obtain a lofty handle effect in fabric.
ii) To obtain fleecy appearance.
iii) To create pile or cover on fabric surface.
iv) To produce a heavier surface made of fibres.
v) It is used to develop some structural features.
vi) To produce warm cloth as well as a soft one.
Types of raising m/c:
There are two types of raising m/c. namely
1. Teasel raising machine.
2. Card wire raising machine.-
i) Single acting raising m/c
ii) Double acting raising m/c
Teasel raising
Witter : MD Mahfuzur Rahman, PTEC
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