抄録
The effects of the cylinder speed (250 to 600rpm), taker-in speed (600 to 1, 500rpm), doffer speed (15 to 33rpm), sliver weight (4 to 8g/m) and production rate (16 to 34kg/hr) were investigated on a high production card with the following results:
1) The optimum speeds of the cylinder and the taker-in are 400rpm and 1, 000rpm, respectively, from the viewpoint of yarn quality.
2) Increasing the sliver weight up to 6g/m does not deteriorate the yarn.
3) Increasing the production rate in proportion to the doffer speed does not deteriorate the yarn.
4) Keeping the sliver weight at 6g/m and using a high speed web doffing unit may increase the production rate up to 57kg/hr without deteriorating the yarn.
