Method for producing ultra-low-shrinkage composite crystal fibrilia and apparatus thereof

Abstract

The invention provides a production method of an ultra-low-shrinkage composite crystal flax fiber. The production method comprises the following steps: semi-dull FDY raw yarn and semi-dull POY raw yarn are adopted as main raw materials, the two different types of raw yarn are simultaneously introduced into a tow traction tube, a tow directly enters a yarn inlet and feed roller through a yarn guide and enters a compressed air network below the yarn inlet and feed roller, then the high-temperature shaping is carried out after the tow enters a lower hot box, the composite tow after shaping is sent out by a yarn outlet and discharge roller, and the winding and the shaping are carried out by guiding the composite tow to a spindle friction roller through the yarn guide after full oiling on an oil wheel. The production method of the ultra-low-shrinkage composite crystal flax fiber and a device thereof provided by the invention carry out the production on the traditional 1000 type polyester stretch yarn machine, and the melt direct spinning semi-dull FDY and the semi-dull POY are taken as the raw yarn for producing the composite crystal flax fiber, thereby changing the traditional process idea and leading the traditional stretch yarn machine to play a new production role. The device omits a first roller, an upper hot box, a cooling plate, a false-twister and other parts of the original device and is further provided with the yarn inlet and guide device, thereby not only changing the process route, but also saving energy.

Description

technical field [0001] The production technology belongs to the polyester fiber compound blending technology in the light industry and textile industry, especially a production method and device of ultra-low shrinkage compound crystal hemp fiber. Background technique [0002] With the rapid development of the chemical fiber industry, the oversupply of polyester products has become increasingly serious. In addition, the chemical fiber industry has been affected by various factors such as the state's macro-control, sharp rise in oil prices, appreciation of the renminbi, and textile exports in the past two years. At present, chemical fiber enterprises The profit space of polyester is getting smaller and smaller, which seriously threatens the survival and development of enterprises. Polyester production enterprises can only work hard on the development of differentiated and functional fibers to increase the added value of their products. [0003] At present, the demand for high-...

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Problems solved by technology

[0003] At present, the demand for high-grade polyester raw materials in the chemical fiber market is increasing. At the same time, there is a boom in the development and production of polyester crystal linen fabrics in the knitting market. However, the production of this fabric must have a polyester composite fiber with relatively stable quality. Production raw materials, and now most of the weaving enterprises use general composite net-connected fibers as raw materials, resulting in many quality problems, fabric style, and uniform hand feel that do not meet customer requirements. a technical bottleneck

[0004] The ultra-low shrinkage composite crystal hemp fiber product came into being. The development of this product is highly targeted, that is, it is specially developed and produced for the production of crystal hemp fabrics, mainly by using the elastic yarn machine with closed hot box heating, The oiling equipment of the oil tanker is used for production, but the current equipment for the production of general polyester composite fibers, such as drafting machine, special composite network machine, etc., does not have the function of high temperature heating and shaping and oiling, and the produced polyester composite fiber cannot Meet the requirements of ultra-low shrinkage and smoothness in the production of crystal linen fabrics, as well as the corresponding style and feel

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