Effect of pin carding plate on removal of neps

To research the effect of pin carding plate on removal of neps in the card slivers,nep tests to the card slivers under different processing conditions using pin carding plate,saw-tooth carding plate and taker-in grid under the card taker-in by USTER AFIS single fiber tester were done.The results show that: 1) within a smaller gauge range,the ability of removing neps and seed coat neps(SCN) of pin carding plate is stronger;the ability of removing neps and SCN of pin carding plate and saw-tooth carding plate are better than the taker-in grid program as a whole;2) when the gauge is larger,as a whole,the ability of removing neps of sawtooth carding plate are better than pin carding plate and that of the above two kinds of carding plate are worse than taker-in grid.The ability of removing SCN of carding plate and taker-in grid are different with the change of raw materials;3) when the gauge is smaller,neps diameter in the card slivers processed by saw-tooth carding plate is a bit larger.When the gauge is larger,neps diameter in the card slivers processed by pin carding plate is a bit larger.Compared with taker-in grid,neps diameter in the card slivers processed by carding plate is a bit smaller.