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Production method of micro nanometer fiber non-woven fabric and device

A technology of micro-nano fibers and production methods, which is applied in the field of nonwovens, can solve problems such as complex production methods and equipment, high requirements for production conditions, and difficult industrial control. It is easy to promote industrialization, low implementation cost, and meets low-carbon requirements. The effect of production requirements

Inactive Publication Date: 2010-07-14
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The production methods and devices of the meltblown method and the flash method all require high temperature or / and high pressure conditions, which require high production conditions, high energy consumption, and pollute the environment, while the electrospinning method also needs to complete the injection of the jet in a high-voltage electrostatic field , production methods and equipment are more complicated, industrial control is difficult, energy consumption is high, and it pollutes the environment, all of which violate the requirements of low-carbon technology

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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  • Production method of micro nanometer fiber non-woven fabric and device
  • Production method of micro nanometer fiber non-woven fabric and device
  • Production method of micro nanometer fiber non-woven fabric and device

Examples

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Effect test

Embodiment 1

[0039] Design a kind of micro-nanofiber non-woven fabric production device (referring to figure 1 , 3 ), comprising a circular liquid storage tank 1, an air jet pipe 2, an air pump 3 and a plane non-woven fabric receiving net curtain 41 with openings on a diameter of 80mm. Wherein, the air jet pipe 2 is vertically installed at the bottom of the liquid storage tank 1, and the present embodiment adopts 11 air jet pipes 2, which are arranged in a staggered manner in concentric circles (see image 3 ); the air jet pipe 2 is at the bottom of the liquid storage tank 1, and communicates with the air flow distribution device 8, and the air flow distribution device 8 is installed on the bottom surface of the liquid storage tank 1, and is connected with the air pump 3 through the air guide pipe and the air supply valve 21, and The height of the jet pipe 2 in the liquid storage tank 1 can be adjusted; the side of the liquid storage tank 1 is connected to the liquid supply tank 11 throug...

Embodiment 2

[0043] The micro-nanofiber non-woven production device of the present embodiment (see figure 2 , 4 ), including a rectangular liquid storage tank (length × width = 80mm × 60mm) 1 with an upward opening at the top, an air jet pipe 2, an air pump 3, a roller non-woven fabric receiving net curtain 42, a roller transmission device 52 and a control device 14, etc. . Present embodiment adopts 9 jet tubes 2, and arrange in parallel in the mode of matrix (referring to Figure 4); the air jet pipe 2 is installed at the bottom of the liquid storage tank 1, and communicates with the air flow distribution device 8, and the air flow distribution device 8 is installed on the bottom surface of the liquid storage tank 1, and is connected with the air pump 3 through the air guide pipe and the air supply valve 21, And the height of the jet pipe 2 in the liquid storage tank 1 can be adjusted; the side of the liquid storage tank 1 is connected with the liquid supply tank 11 through the liquid ...

Embodiment 3

[0047] This embodiment adopts the same device as Example 2.

[0048] Before spinning, first weigh 100 grams of polyvinyl alcohol (polymerization degree is 1750 ± 50) powder, and mix with solvent - distilled water with a mass ratio concentration of 12.5%, stir evenly in a water bath at 85 ° C, and let stand for 2 Hours, the polyvinyl alcohol / distilled water spinning solution is obtained; then the prepared polyvinyl alcohol spinning solution is packed into the liquid supply pool 11, and starts to supply the liquid in the liquid storage pool 1 until the liquid storage tank 1 The liquid level of the spinning solution is 2.5cm higher than the nozzle opening of the air jet tube 2; when spinning, first open the air pump 3, and slowly adjust the air supply valve 21 to increase the pressure and air flow until the liquid level of the polymer solution Generate bulge, suitably regulate air pressure again and be 1.2Mpa, make the liquid level of spinning liquid form the bulge 9 of the hollo...

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 production method of a micro nanometer fiber non-woven fabric and a device. The production method comprises the following steps: (1) polymer solution is prepared: (2) fiber is formed by micro nanometer jet injection: air pressure is supplied by an air pump, so the air stream is vertically sprayed out from a nozzle below the polymer solution liquid surface of a liquid storage tank, a crater-shaped projection is produced on the liquid surface of the polymer solution, the micro nanometer jet flow is sprayed out form the projection under the effect of the cutting force of the air stream and flies to a receiving device, during the injection process, good solvent in the micro nanometer jet flow is volatilized, and at the same time, the jet flow is drawn and refined to micro nanometer fiber under the effect of the air stream force; (3) and the non-woven fabric is formed. The production device is designed according to the production method and mainly comprises a spinning system, a liquid supply system, a transmission system and a control system.

Description

technical field [0001] The invention relates to non-woven fabric technology in the field of textiles, in particular to a production method and device for preparing micro-nano fiber non-woven fabric through the combined action of airflow and polymer solution. Background technique [0002] At present, the production methods of micro-nano fiber non-woven fabrics commonly used by research institutions and production companies in various countries mainly include melt blown method, flash method and electrospinning method. Among them, the literature reports on the melt-blown method mainly include: "Equipment, Process and Products of the Melt-blown Method" (Edward McNally, Industrial Textiles [J], 2008 No. 5, 23-25.), Chinese Patent CN1446275, CN94117940.0, CN1440840, etc.; U.S. Patents US3978185, US4238175, US4267002, etc.; The polymer is extruded through linearly arranged small holes, and micro-nano fibers are formed under the jet of high-speed hot air at a certain angle. The li...

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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Patent Type & Authority Applications(China)
IPC IPC(8): D04H3/16D01D1/02D01D5/00D01D5/04D01D13/00
Inventor 刘雍董亮范杰康卫民王瑞程博闻
Owner TIANJIN POLYTECHNIC UNIV
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