Shuttle noise level increases by about 1 5 2 0 dba.
Blow room processing of material tends to increase bp level by.
Trails have been carried out with two different noil percentage 9 and 10 to make 80 s ne count yarn with the same process parameters from blow room to ring frame.
The fibre processes well with appropriate level of moisture gained from atmosphere.
For example indian cotton generally has a trash level of 4 5.
Once the level of card sliver neps required are decided the level of neps required at blow room material and target level at mixing can be arrived.
As the 100m speed increases the noise level also increases significantly due to the higher impact forces acting on the different parts of a loom.
Almashouley 1988 reported that inadequate settings and inadequate feedings are the sources of variation in weight per yard of lap.
And there are 1 5 to 7 trash in cotton bale which is also needed to be removed before further processing.
So the machine should have enough cleaning points.
Alan and alexander 1988 pointed out that processing of fibres tends to produce neps through a stress.
Cotton fibre is compressed in a bale of 200 to 250 kg.
It is important to arrive the product standards considering the end use requirement for card sliver.
This tends to increase the percentage of short fibres and the level of neps.
This sketch represents the blow room line suitable for processing all range of counts.
The maximum noise level is observed at the front of the machine because of the movement of siey which causes air turbulence.
It is important to arrive the product standards considering the end use requirement for card sliver.
The process wise analysis refers to nep increase at blow room and nep reduction at card.
In comparison the pin has a smooth round surface and a spherical tip which opens the fibres through a gentle untangling action.
The process wise analysis refers to nep increase at blow room and nep reduction at card.
The thrash contained in the fibre supply also tends to disintegrate into micro dust due to the saw tooth action.
Very high level of moisture above 65 disturbs processing as the fibres tend to sti.
Cards together with the variation in blow room a major part of this variation can be attributed to blow room.
Once the level of card sliver neps required are decided the level of neps required at blow room material and target level at mixing can be arrived.
So atleast 7 beating points are required to open and clean the cotton.
This process of opening cleaning is knows as blow room process.
Blow room is the only area where the high trash cotton content can be cleaned.
Truetzschler machine from germany has enough cleaning points in the blow room.
