8222 Chasing(叠层轧光 On the chasing calender the cloth passes through the calender in the same manner as in the rolling calender and is then fed back through the rolls a second time so that two layers of fabric pass through the nips at the same time. The finish obtained on a chasing calender is softer but fuller and with less of a sheen than with a rolling calender
8.2.2.2 Chasing(叠层轧光) • On the chasing calender the cloth passes through the calender in the same manner as in the rolling calender and is then fed back through the rolls a second time so that two layers of fabric pass through the nips at the same time. The finish obtained on a chasing calender is softer but fuller and with less of a sheen than with a rolling calender
8. 2.2.3 Friction Calendering In this type of calendering a friction due to a difference in speed of the cloth and the rolls is the most important factor in the finish obtained. In the friction calender the cloth passes through at a slower speed than the third roll which is a polished chilled steel roll. The cloth passes through the calender at the speed of the two lower rolls and the driven polished roll revolves on the cloth at a higher speed and polishes it
8.2.2.3 Friction Calendering • In this type of calendering a friction due to a difference in speed of the cloth and the rolls is the most important factor in the finish obtained. In the friction calender the cloth passes through at a slower speed than the third roll which is a polished chilled steel roll. The cloth passes through the calender at the speed of the two lower rolls and the driven polished roll revolves on the cloth at a higher speed and polishes it
This gives a highly glazed surface and closes the interstices in the goods to give a smooth finish. If the third roll is run hot a high glaze is obtained. If resins are used the glaze produced will be relatively permanent
This gives a highly glazed surface and closes the interstices in the goods to give a smooth finish. If the third roll is run hot a high glaze is obtained. If resins are used the glaze produced will be relatively permanent