Several types of wastage are found during the processing of row cotton in spinning mill 12-13% wastage are produced for card process and 25-30% wastage  are produced for combed process. The names of different wastage are given below, 1.  Blow-room of waste = [3%]   i. Droppings-2 ii. Lap waste. 2. Carding of waste = [3-5%] …