Two. Relaxation processing
Relaxation processing the fiber spinning, Custom Decorative Garden Flags Wholesale twisting weaving torque and internal stress relief, and twisting the fabric solutions twist to form a crepe effect and improve the feel and the fullness of the fabric. To release the torque and the internal stress, then the relaxation of the processing conditions must exceed the torque and the formation of internal stress conditions. Full relaxation of the contraction is terylene artificial silk for excellent style.
Most of the polyester fabric, relaxation and refining is carried out simultaneously in one bath, and some synchronization with the desizing. The microfiber fabric is appropriate due to fiber fineness, Custom Decorative Garden Flags Wholesale high-density fabric, if desizing scouring and relaxation at the same time, are often organized slurry oil in the gap is not easy removal, desizing scouring and relaxation is to be dealt with separately . General desizing scouring first, then relaxation, and then add in the relaxation part of the scouring agent to go to the net impurity.
Different relaxation equipment have different relaxation techniques, relaxation treatment, its different style of the product. So far, polyester fabric loose equipment and the corresponding relaxation process can be used are the following.
(1) intermittent dip tanks
Such equipment is the most simple. In a certain temperature and pressure, the fabric in a solution containing alkali and scouring agent continue to roll, to complete the desizing, scouring and relaxation purposes. Custom Decorative Garden Flags Wholesale But with the processing of such equipment, its temperature and pressure and roll is less than the product, low shrinkage, and thus few manufacturers.
(2) jet overflow dyeing machine
Jet overflow dyeing machine is the most widely used domestic desizing, scouring, relaxation processing equipment. Jet overflow dyeing machine processing, fabric tension, friction and stacked with liquor ratio and cloth-speed has a great relationship, and relaxation to deal with product quality is closely related to the above factors, and thus control the cooling rate, but also To select a reasonable liquor ratio and cloth speed. Polyester silk fabric relaxation scouring cloth speed should not be big high, generally 200 of
Relaxation in the jet overflow dyeing machine and concise, but also by adjusting the nozzle diameter, the working fluid cycle times to achieve the required process parameters. High temperature and high pressure jet overflow dyeing machine, scouring relaxation wrinkle process, polyester crepe de chine imitation silk fabrics, for example, process prescription is:
Of NaOH (30%) 4%
Liquor ratio of 1: (10-12), fabric speed
Jet overflow dyeing machine the scouring relaxation solution twist wrinkle operating heating and cooling slowly. In particular, cooling, or make the fabric feel rough.
(3) The width of steaming relaxation scouring machine Custom Decorative Garden Flags Wholesale
The biggest advantage of this device is able to overcome jet overflow dyeing machine is easy to produce uneven shrinkage and the formation of the wrinkles of the shortcomings of
(4) solution of twist relaxation to switch to cage-washing machine
High temperature and pressure of the cage washing machine is scouring relaxation solution twist to deal with the best equipment, the fabric flat on the cage relaxation handled by this device treatment up to 12% ~ 18% shrinkage of the fabric, heavy twist fabrics up to 20%, making the fabric feel the fullness of its style more desirable, Custom Decorative Garden Flags Wholesale and other machinery can not be achieved. But the operation of this equipment is cumbersome, labor-intensive, plus small quantities of long cycle operation improper handling may produce wrinkle wrinkle uneven, edge defects, such as flaws.
The cage-washing machine for relaxation solution twist wrinkle, the process conditions may be set as follows: liquor ratio of 1: (10 15), temperature 135 ° C, time 30 ~ 40 min, the cylinder speed of 5 ~ 20 r / min.