Large-diameter polyester monofilament production process
A production process and large-diameter technology, applied in the field of polyester monofilament production, can solve problems such as unsatisfactory monofilament strength and toughness, affecting application prospects, etc., to improve physical and mechanical properties, reduce elongation at break, and expand applications foreground effect
Pending Publication Date: 2022-03-11
浙江宝力特种丝业有限公司
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Problems solved by technology
[0005] The existing large-diameter polyester monofilaments, especially polyester monofilaments with a diameter of 0.3mm-0.5mm, are not satisfactory in terms of monofilament strength and toughness, which affects their application prospects in the field of industrial textiles
Method used
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[0033] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0034] combine figure 1 and figure 2 , the present invention is described in detail. A large-diameter polyester monofilament production process involved in this embodiment includes the following steps: feeding → drying and dehumidification → extrusion → first stretching → hot water stretching → second stretching → hot air stretching → The third stretching → high temperature setting and oiling → the fourth stretching → winding. The diameter of the polyester monofilament prepared by the production process is 0.3mm-0.5mm. In this embodiment, 0.3mm is taken as an example for illustration.
[0035] In step 1) feeding, the transparent polyester chips and the semi-dull polyester chips are evenly mixed according to the proportion using a stirring device, and placed in a hopper. Specifically, the transparent polyester chips are mixed with the semi...
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Abstract
The invention discloses a production process of large-diameter polyester monofilaments. The production process comprises the following steps: feeding; drying and dehumidifying; performing extrusion; extending for the first time, wherein the speed is 30-32 m / min; hot water stretching; the second time of extension is carried out at the speed of 120-130 m / min; hot air stretching; extending for the third time, wherein the speed is 170-185 m / min; performing high-temperature shaping; applying oil; the speed of the fourth-time extension is lower than that of the third-time extension and higher than that of the second-time extension; and winding. According to the production process of the large-diameter polyester monofilament, multi-stage extension is adopted, hot water stretching, hot air stretching and high-temperature setting are carried out, the internal stress of the monofilament is eliminated through heat setting, and the physical and mechanical properties of the monofilament are further improved. The breaking strength of the prepared polyester monofilament is improved, the elongation at break is reduced, and the application prospect of the polyester monofilament is expanded.
Description
technical field [0001] The invention relates to the technical field of polyester monofilament production, in particular to a large-diameter polyester monofilament production process. Background technique [0002] Large-diameter melt-spun polymer monofilament refers to a single fiber with a diameter between 0.08mm and 5mm. Compared with nanofibers, ultra-fine fibers, fine denier fibers, conventional fibers and conventional monofilaments, its main technological Capacity single-hole melt extrusion, liquid cooling, low nozzle draw ratio, multi-stage draw. [0003] Polymer monofilament has good wear resistance, the use effect is better than that of metal wire, and its rigidity is higher than that of multifilament. When used in special weaving, it can strengthen the fabric in a certain direction. The low specific surface area and high volume make the fabric Less susceptible to contamination and helps resist hydrolysis. Large-diameter monofilaments can be used in the filtration i...
Claims
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Patent Timeline
Login to View More IPC IPC(8): D01D1/02D01D1/06D01D5/088D01D5/14D01D5/096D01D10/02D01D1/10D01D13/00D01F6/62
CPCD01D1/02D01D1/06D01D5/0885D01D5/14D01D5/096D01D10/02D01D1/106D01D13/00D01F6/62
Inventor 沈华锋
Owner 浙江宝力特种丝业有限公司