A kind of preparation method of semi-dull polyester industrial filament for safety belt
A semi-dull, safety belt technology, applied in the field of polyester industrial filaments, can solve the problems of difficult flexible adjustment of content, high cost expenditure, etc., and achieve the effects of optimizing milk-forming performance, reducing production costs, and reducing loss probability
Active Publication Date: 2016-08-31
ORIENTAL IND SUZHOU
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Problems solved by technology
[0006] The traditional semi-dull polyester fiber is mainly used for clothing, and the production of semi-dull polyester fiber in the prior art mainly adopts two methods, one is the masterbatch method, and the other is the slicing method. Both methods are concentrated in The improvement of raw materials, and the improvement of raw materials will inevitably lead to the adjustment of the process, which will cause large cost expenditures for both equipment and production, and the matting agent TiO 2 The content is not easy to adjust flexibly according to user needs
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[0038] A kind of preparation method of semi-dull polyester industrial filament for safety belt, the method comprises the following steps,
[0039] 1) Adopt the method of continuous solid-state polymerization to make high-viscosity PET chips;
[0040] 2) Transport the high-viscosity PET chips prepared in 1) to a screw extruder, extrude the melt at a high temperature of 290-320°C, and mix the TiO 2 Mix TiO homogeneously during melting 2 The mass percentage content is 0.1% ± 0.01%, and then spit out from the spinneret hole through the melt pipe, uniformly cooled and formed by the slow cooling device and the cooling device, and enter the spinning tunnel to form primary fibers;
[0041] 3) The as-spun fiber treated in step 2) passes through the ring-shaped gravity transmission pipeline, which sprays the high-temperature-resistant spinning oil on the surface of the as-spun fiber to form a friction-resistant coating on the surface of the as-spun fiber, and then passes through the H...
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Abstract
The invention provides a preparation method of a semi-dull polyester industrial filament for a safety belt. The method comprises the following steps: (1) preparing a high-viscosity PET chips by the continuous solid phase polymerization method; (2) conveying the prepared high-viscosity PET chips to a screw extruder, extruding a melt at the high temperature of 290 to 320 DEG C, adding TiO2 to polyester, uniformly mixing, spinning through a spinneret hole by using a melt pipeline, uniformly cooling and forming through a slow cooling device and a cooling device, and then transferring into a spinning processional road to form nascent fibers; and (3) feeding the nascent fibers processed in step (2) through an annular gravity conveying pipeline, spraying a high-temperature resistant spinning oiling agent on the surfaces of the nascent fibers through the annular gravity conveying pipeline to form an anti-friction coating on the surfaces of the nascent fibers, then thermally stretching and sizing, and coiling under the control of the tension force of 250+ / -50N.
Description
technical field [0001] The invention relates to a polyester industrial filament. More specifically, the present invention relates to polyester industrial filaments having excellent properties of semi-dullness. Background technique [0002] In recent years, China's automobile industry has developed rapidly as a pillar industry. The safe driving of automobiles has become a focus of attention of automobile manufacturers and the majority of occupants. With the improvement of users' safety awareness, when a car collides, rolls over or loses control, in order to reduce the collision damage caused by the inertial force to the driver or occupant (in severe cases, even the broken glass flies out of the window), the state requires motor vehicles to be equipped with seat belt. [0003] At present, the most advanced car seat belt is mainly composed of three parts: seat belt webbing, retractor (including pre-tensioner), and tension limiter. When a car collides, due to inertia, the hum...
Claims
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IPC IPC(8): D01F6/92D01F1/10D01F11/08D01D13/00D01D5/096C08G63/183C08G63/80
Inventor 范达财王好龙
Owner ORIENTAL IND SUZHOU