Functions of Blow Room Machines:
Opening: To open the compressed bales of fibres & to make the cotton tuft as small as possible.Cleaning: To remove dirt, dust, broken seeds, broken leaves, and other foreign materials from the fibers.
Mixing & Blending: Uniform mixing/blending of fibers of different varieties.
Lap or flocks formation: To transfer opened and cleaned fibre into sheet form of definite width and length which is called lap or in modern system directly feed the material to the carding machine in flock form.
Details of Blow Room Machines:
Operations of Blow Room Machines:
Cotton Bale:
A commercial package consisting of cotton lint tightly compressed, covered with bagging and bound with metallic or polymer straps.Normally cotton bale weighs around 170 Kgs.
Opening Operation:
It is the first operation in the blow room line where the bales are arranged in a predetermined order and the bale plucker machine plucks the fibre tufts from the bales laid uniformly and feeds to blow room line by the action of air.
Cleaning Operation:
To eliminate dust, dirt, broken leaf, seed particles, grass and other foreign matters from the fibres.
Blending/mixing Operation:
Fibers of different varieties are uniformly mixed and blended in these machines of blow room.
Lap Forming:
To convert the opened and cleaned fibres into a sheet of particular width with uniform weight/unit length is called lap. The Lap so formed is wound on the lap spindle to make it suitable for the next process of carding.
Chute Feed System:
In case of chute feed system instead of forming blow room lap, the opened, cleaned, mixed/blended material is fed to the carding machines through pipe line in tuft (sheet form) by the action of air.
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