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Technology and equipment for preparing artificial fiber filament non-woven fabric on basis of dry spinning technique

A technology of filament non-woven fabrics and man-made fibers, applied in the field of textiles, can solve the problems of increasing the production cost of non-woven fabrics, increasing the complexity of the process, and no one has thought of it, so as to improve the washing effect, save process steps, and achieve good results Effect

Active Publication Date: 2016-02-24
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen from this that in order to obtain filament non-woven fabrics, it can only be obtained by dry spinning through spunbonding and then reinforced. In the production of non-woven fabrics, due to the complicated process and high cost of wet spinning, doing so will greatly increase the production cost of non-woven fabrics and increase the complexity of the process
[0004] In summary, although dry spinning can produce man-made fibers at present, no one in the field of actual production and research and development has thought of using dry spinning technology to obtain man-made fiber filaments and then laying a net to prepare man-made fiber filament non-woven fabrics. Methods

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Technology and equipment for preparing artificial fiber filament non-woven fabric on basis of dry spinning technique
  • Technology and equipment for preparing artificial fiber filament non-woven fabric on basis of dry spinning technique
  • Technology and equipment for preparing artificial fiber filament non-woven fabric on basis of dry spinning technique

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preparation example Construction

[0047] (1) Preparation of spinning stock solution: Pulp raw materials are obtained from trees, grasses and other raw materials. The pulp raw materials are sequentially impregnated, ground, pressed and pulverized, and the sulfate slurry obtained after cooking with a mixture of sodium hydroxide and sodium sulfide , the sulfate slurry is washed in running water, dehydrated; then alternately dipped in sodium carbonate solution and dilute sulfuric acid sol-pressed dry-washed twice to obtain cellulose; the cellulose is added to nitrogen methylmorpholine oxide ( NMMO) solution, and obtain spinning dope after defoaming;

[0048] (2) Solidification reaction of stock solution and recovery of nitrogen methyl morpholine oxide (NMMO) In the tunnel, the action of the spinning dope in the hot air flow makes the nitrogen methyl morpholine oxide (NMMO) in the thin stream of the dope volatilize quickly, and the volatilized nitrogen methyl morpholine oxide (NMMO) vapor is carried by the hot air ...

Embodiment 1

[0059] Such as figure 2 , 3 , 4, 5, and 6, a device for preparing artificial fiber filament non-woven fabrics based on dry spinning technology, consisting of a dry spinning device 1 and a forming device 2, the dry spinning device 1 includes A spinning stock solution container 3 with an injection port, a metering pump 4 connected to the spinning stock solution container 3, a spinneret 5 is connected to the metering pump 4, and the spinning solution for spraying the spinneret 5 The solidified spinning shaft 6, the spinneret 5 extends into the spinning shaft 6, the bottom of the spinning shaft 6 is provided with a hot air inlet 7 and an output port 8 for deriving the solidified artificial fiber tow 11, The top of spinning tunnel 6 is provided with hot air outlet 65 and is connected with hot air outlet 65 and is used for reclaiming the collection container 66 of nitrogen methyl morpholine oxide (NMMO), and washing device 10 is set at outlet 8, It also includes a forming device ...

Embodiment 2

[0063] In order to meet the actual production needs, a winding mechanism 32 can be set at the output end of the web forming machine web curtain 22, and the filament fiber web 20 on the web forming machine web curtain 22 is dried by the drying mechanism 24 and then rolled. Mechanism 32 is directly wound and packaged. A drafting roll for improving the strength of the rayon tow 11 can also be optionally arranged between the godet roll 9 and the bundle splitting device 13 , and the drafting roll is composed of a main drafting roll 33 and a secondary drafting roll 34 .

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention discloses a technology for preparing an artificial fiber filament non-woven fabric on the basis of a dry spinning technique. The technology comprises a spinning technology including the steps of spinning solution preparing, liquid solidifying reacting and N-methylmorpholine oxide (NMMO) recycling, artificial fiber forming, washing and drafting and a non-woven fabric forming technology including the steps of web laying, wherein dried as-formed fiber bundles are evenly dispersed and laid on a web curtain of a web former to form filament fiber webs which are mutually stacked in a crossing mode; spunlace reinforcing; drying; rolling. Equipment is composed of a dry spinning device and a non-woven fabric forming device. According to the technology and the equipment, related steps in a traditional dry spinning technology are omitted, half-finished artificial fiber filaments are directly adopted for production of the non-woven fabric, and the traditional concept that finished fiber filaments are used for two times for non-woven fabric production is broken; the production cost is effectively saved, pollution to the environment in the technology process is reduced, and the production efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of textiles, and in particular relates to a process and equipment for preparing artificial fiber filament non-woven fabrics based on dry spinning technology. Background technique [0002] Non-woven fabric (English name: NonWovenFabric or Nonwovencloth), also known as non-woven fabric, is a kind of non-woven fabric, which is composed of oriented or random fibers. Combustion-supporting, easy to decompose, non-toxic and non-irritating, rich in color, low in price, recyclable and so on. For example, polypropylene (pp material) pellets are mostly used as raw materials, which are produced by continuous one-step process of high-temperature melting, spinning, laying, and hot-pressing coiling. It is called cloth because of its appearance and certain properties. Because it is a fabric that does not need spinning and weaving, it is just oriented or random arrangement of short textile fibers or filaments to form a web...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D04H1/492D04H1/72D01D13/00D01D5/04
Inventor 马建伟郭亚
Owner QINGDAO UNIV
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