High-cutting-resistance copolymerized spandex wrap yarn and preparation method thereof

Abstract

The invention belongs to the technical field of wrap yarns and preparation methods thereof, and particularly relates to a high-cutting-resistance copolymerized spandex wrap yarn and a preparation method thereof. The wrap yarn comprises a yarn core, a middle-layer yarn and an outer-layer yarn, wherein the middle-layer yarn is tightly wound on the outer surface of the yarn core according to the dtex: 117.2, and the outer-layer yarn is tightly wound on the outer surface of the middle-layer yarn according to the dtex: 321.7; and the preparation method comprises the steps of weighing by weight, pretreating, copolymerizing the spandex filament wrap yarn and the like. The spandex is set to be a linear polyurethane block copolymer, and aluminum filaments are coated, so that the extensibility of the spandex can be promoted, the fiber fineness of the outer-layer yarn and the middle-layer yarn is further improved, and the tensile strength, the elongation at break and the hardness of the wrap yarn are promoted to be greatly improved; and meanwhile, the preparation method is high in efficiency and low in manufacturing cost, so that the effects of improving the comfort level, being low in manufacturing cost, resisting abrasion, resisting high temperature and being high in cutting resistance are achieved.

Description

technical field [0001] The invention belongs to the technical field of covered yarn and its preparation method, and in particular relates to a high cut-resistant copolyurethane spandex covered yarn and its preparation method. Background technique [0002] Spandex covered yarn usually uses spandex yarn as the core yarn, and the outer layer is spirally wound with staple fiber yarn, synthetic fiber and other fiber filaments on the core yarn in a stretched state under the action of external force, sometimes called "wrapped yarn". The composite yarn with this structure can not only be matched with different outsourcing fibers according to the application, but also can obtain composite yarns with different properties by controlling and adjusting the elasticity and draft ratio of the yarn during the spinning process to meet people’s requirements for yarn performance. different needs. [0003] Although spandex has good tensile properties, it is not wear-resistant and easy to break....

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Problems solved by technology

[0006] In order to overcome the existence of the spandex covered yarn in the prior art, it is only considered from the material of the outer layer yarn, and the spandex is not copolymerized, and this type of spandex covered yarn is poor in terms of cost and comfort. Problem, the present invention provides a copolyurethane spandex covered yarn with improved comfort, low cost, wear resistance, high temperature resistance, high cutting resistance and its preparation method

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