(1) Rolling tension (PACKAGE DRAFT %): The tension of the elastic fiber on the top is very important. The tension should be kept even from the inside to the outside. If the tension is not uniform, it will directly affect the effect of the woven fabric. The optimal top-roll tension is 8%-12%, and the tension error of each package cannot exceed 3%.

(2) DTEX ON CHEESE: The number of counts on the drum is controlled by the winding tension. For example, the winding tension of 44dtex is 10%, that is, the actual number of counts on the drum is 40dtex, which is 10 thinner. %. Nowadays, some spandex manufacturers believe that when the weight of each brand of spandex is the same, the spandex with high winding tension is undoubtedly longer in length, has more weaving length, and the fabric can be woven lighter. You must pay attention to your own products. selected according to the requirements.

SMS+PE3

(3) Breaking strength (BreAKING TENACITY): Usually, the strength performance of each different brand or series of spandex is different. The test method can be tested by taking 50mm in a conditioned environment and using a strength machine to test 100% (SS100), 200% (SS200), 300% (SS300), test five times each, generally observe the stability of 200% (SS200) data and other data, the greater the strength, the greater the elongation force of the fabric, and the speed during weaving can be Hurry up.