The production process of denim given in the following link gives the general idea of the process, the series of blogs like this give the brief explanation of the process and machines. here in this blog we will get the idea of Blow room Process:
https://bindaprocess.blogspot.com/2022/02/denim-production-process.html
Overview
Department blow room is the first apartment inside the spinning mill. The m ain objective of blow room is opening, cleaning, Dust removal, Blending (even feed) for the material to the card blower machineries.Operations
The operations involves loader, it all begins with lay down arrangements, where Bales are collected from Bale go downs based on the properties they possess, length strength micronized reflective
index which is checked through ketch VI instrument, improper lay down which caused variation in yarn.
Pluckers or blend or mat is the first machine in the department. where fibers are opened from bale with opening rollers which acts on bales and opens into fiber flocks. The height of bale pluckers advances during each transfers so that there will be constant opening of fibers. open fibers are transferred for further fine opening and cleaning, and are transported with the help of pipeline. condenser plays a vital role in transporting material to next machine. lean opened fibers from bale plucker reach to the unit precisely called Pre cleaner , through duct line.
This line eliminate heavy trash like seed particles, stones trash etc. These heavy particles drop down on the grid bar through gravity and suction generated by waste collection chamber these wastes will be collected through waste pipelines and will be stored in waste collection lines.
Multi Mix pre-cleaned material reaches the multi mixer contains several chambers to collect the material. material will be filled in sequence in all chambers uniformly and it is controlled by a pressure switch. Material from all chambers mix uniformly inside the chamber before they exit, so the property will not very much different in the output fiber this is to avoid variation in yarn properties and this will be reflective in fabric appearance after dyeing.
flexi clean material from multi mixer is then transferred into fine
cleaning flexi clean material. Which is subjected to fine beating achieved with the help of pin beta or sawtooth beta.
waste particles adhere to fibers will be removed during this
fine beating precisely called controlled beating. So it is very important to maintain the feed from uniform beating.
waste particles are eliminated through suction generated by waste collection chamber. Contamination cleaner particles which cannot be removed by Uni-clean of flexi clean machines like colored contaminations and polypropylene materials, should be transported and are removed through contaminated cleaners. These machines particularly act upon colored particles and polypropylene materials. Presence of these materials in yarn should cause bad effect on fabric after dyeing.
Material rejected to these machines are later subjected to sorting where waste particles are separated from good fibers. This should reduce the overall fiber loss and improve yarn realization.
