The product requires low twist and soft hand, but the strength cannot affect the weaving efficiency. If the traditional spinning process is used, the low twist cannot guarantee the strength, and the spinning efficiency is also very low. Therefore, we use a variety of test schemes to determine the ratio of core yarn to outer fiber.
A large number of experimental results show that the core yarn ratio of core-spun yarn can be produced at 10-40%, but only by selecting the appropriate core yarn and outer fiber ratio can the yarn strength index be guaranteed. When the core yarn ratio is 25-30%, the yarn strength index is better, and the strength of the core-spun yarn below this ratio will be significantly lower; when the ratio is higher than this ratio, the outer cotton fiber entanglement is weak, and the yarn is not good. There are many decapitations, and strength cannot be guaranteed. In the end, we choose C58.3 package 14.6tex (the finished yarn is 58.3tex, the core yarn 14.6tex is ordinary ring spun yarn, the twist coefficient is 420, the breaking strength is 15N/tex), the core yarn accounts for about 25%, and the spinnability Best, the product quality can meet the weaving requirements.
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