1.Lap Feed (Conventional)
2. Chute feed (Modern)
(a) Single chute feed system
(b) Double chute feed system
1.Linear density of the lap is very good and easier to maintain (uniformity).
2. The whole installation is very flexible.
3. The deviation of card output will be nill as laps can be rejected.
4. Autolevellers are not required, hence investment cost and maintenance cost is less.
1. Transportation of lap needs more manual efforts (more labour).
2. Lap run out is an additional source of fault , as it should be replaced by a new lap.
3. More good fiber loss during lap change.
4. More load on the taker-in as laps are heavily compressed.
High performance of carding due to high degree of openness of feed web.
Labour requirement is less due to no lap transportation and lap change in cards.
1. Flock feeding is the only solution for high production cards.
2. Linear density of the web to the card is not as good as lap.
3. Installation is not flexible.
4. Autoleveller is a must , hence investment cost an maintenance cost is more.
01. Conveyer system.
02. Proper control of air pressure.
03. A mechanism to feed the material at uniform weight per unit length.
04. A delivery system to feed material to card feed rollers.
05. A sensing mechanism to keep a certain amount of material as reserve
Posted in: Textile Spinning