阅读说明：本技术 一种涤纶包芯线及其制备方法 (Polyester core-spun yarn and preparation method thereof ) 是由 胡蓉蓉 于 2018-07-23 设计创作，主要内容包括：本发明提供一种涤纶包芯线是由两根或多根涤纶包芯纱捻合而成,所述的每根涤纶包芯纱都是由涤纶长丝外包裹涤纶短纤组成；其制作方法是：1.将经过处理的涤纶长丝和经过中、后罗拉牵伸后的涤纶短纤从前罗拉处喂入；2.涤纶短纤在前罗拉内包裹在涤纶长丝外成为涤纶包芯纱并从罗拉钳口输出；3.将两根或多根涤纶包芯纱经捻线机捻合后成涤纶包芯线；步骤1所述的涤纶长丝处理过程是：先经过导丝钩和张力盘从而控制并稳定长丝张力；再通过导纱杆以及定位导轮的定位后从前罗拉处喂入；本产品不但外观光洁,纱疵少,而且可缝性好,不易起球,与普通涤纶线相比具有强力高、强力变异系数少,捻度高的特点,从而可以广泛应用于制衣缝纫上。(The invention provides a polyester core-spun yarn which is formed by twisting two or more polyester core-spun yarns, wherein each polyester core-spun yarn is formed by wrapping polyester staple fibers outside polyester filament yarns; the manufacturing method comprises the following steps: 1. feeding the treated polyester filament yarn and the polyester staple fiber drafted by the middle roller and the rear roller from the front roller; 2. wrapping the polyester staple fibers outside the polyester filaments in the front roller to form polyester core-spun yarns, and outputting the polyester core-spun yarns from a roller jaw; 3. twisting two or more polyester core-spun yarns by a twisting machine to form a polyester core-spun yarn; the polyester filament yarn treatment process in the step 1 is as follows: the yarn passes through a yarn guide hook and a tension disc so as to control and stabilize the tension of the filament; then feeding the yarn from the front roller after being positioned by the yarn guide rod and the positioning guide wheel; the product has the advantages of smooth appearance, less yarn defects, good seamability, difficult pilling, high strength, less variation coefficient of strength and high twist compared with the common polyester yarn, thereby being widely applied to garment making and sewing.)

1. The polyester core-spun yarn is characterized by being formed by twisting two or more polyester core-spun yarns, wherein each polyester core-spun yarn is formed by wrapping polyester staple fibers outside polyester filament yarns.

2. The manufacturing method of the polyester core-spun yarn according to claim 1 comprises the following steps:

(1): feeding the treated polyester filament yarn and the treated polyester staple fiber from a front roller;

(2): wrapping the polyester staple fibers outside the polyester filaments in the front roller to form polyester core-spun yarns, and outputting the polyester core-spun yarns from a roller jaw;

(3): twisting two or more polyester core-spun yarns by a twisting machine to obtain the polyester core-spun yarn.

The polyester filament yarn treatment process in the step (1) is as follows: the yarn passes through a yarn guide hook and a tension disc so as to control and stabilize the tension of the filament; then the yarn is fed from the front roller after being positioned by the yarn guide rod and the positioning guide wheel.

The treatment process of the polyester staple fibers in the step (1) is as follows: the polyester staple fibers are drawn by middle and rear rollers.

Technical Field

The invention relates to the field of spinning, in particular to a preparation method of a polyester core-spun yarn.

Background

At present, along with the updating and upgrading of sewing machines, the machine speed is faster and faster, and the popularization of high-grade fabrics, the high-speed sewing thread for clothing manufacture often requires high strength, low strength variation coefficient, high twist, few yarn defects and good seamability, the sewing thread spun by the common polyester staple fiber on the market can not meet the requirements of users, the sewing thread is mainly spun by adopting a hollow spindle unwinding mode, and the defects are that: the unwinding tension is gradually increased along with the reduction of the unwinding diameter of the filament tube, and in addition, when the filament is fed into the roller, the stroke moves along with the movement of the short fiber feeding stroke, so that the peeled yarn is generated.

Disclosure of Invention

The invention aims to provide a polyester core-spun yarn which is more stable and has more uniform twist and a manufacturing method thereof.

The technical scheme adopted by the invention for solving the technical problems is as follows: the polyester core-spun yarn is formed by twisting two or more polyester core-spun yarns, wherein each polyester core-spun yarn is formed by wrapping polyester staple fibers outside polyester filaments.

The manufacturing method of the polyester core-spun yarn comprises the following steps: (1): feeding the treated polyester filament yarn and the treated polyester staple fiber from a front roller; (2): wrapping the polyester staple fibers outside the polyester filaments in the front roller to form polyester core-spun yarns, and outputting the polyester core-spun yarns from a roller jaw; (3): twisting two or more polyester core-spun yarns by a twisting machine to obtain the polyester core-spun yarn.

The polyester filament yarn treatment process in the step (1) is as follows: the yarn passes through a yarn guide hook and a tension disc so as to control and stabilize the tension of the filament; then the yarn is fed from the front roller after being positioned by the yarn guide rod and the positioning guide wheel.

The treatment process of the polyester staple fibers in the step (1) is as follows: the polyester staple fibers are drawn by middle and rear rollers.

The invention has the beneficial effects that: the production operation process of the product is simple, the yield is high, and the cost is low; the produced product has smooth appearance, less yarn faults, good sewing performance and difficult pilling, and compared with the common polyester yarn, the produced product has the characteristics of high strength, less variation coefficient of strength and high twist, thereby being widely applied to garment making and sewing.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.