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Electrostatic tow separator

A technology of a filament separator and an electrostatic generator, which is used in the production of filaments, textiles and papermaking, etc., can solve the problems of easy generation of filaments and uneven distribution of tow.

Inactive Publication Date: 2014-06-25
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] What the present invention aims to solve is the problem that the existing thin spunbonded nonwoven products are prone to parallel filaments and uneven distribution of tows.

Method used

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  • Electrostatic tow separator
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Such as Figure 1-5 As shown in FIG. 1 , it is a structural schematic diagram of the electrostatic splitter provided in Example 1, which includes the splitter main part and the target roller 1 respectively located on both sides of the tow 6. The target roller 1 is arranged in parallel with the splitter main part. The discharge needle 2 on the wire main part points to the target roll 1 and is perpendicular to the longitudinal section of the target roll 1 . The main part of the split wire includes a discharge needle plate 3 embedded with a plurality of discharge needles 2. The side of the discharge needle plate 3 embedded with the discharge needles 2 is provided with an anti-high voltage insulating material module 7, and the discharge needle 2 is formed from the anti-high voltage insulating material module. 7, the tip of the discharge needle 2 is located on the same plane as the outer surface of the anti-high voltage insulating material module 7. The distribution of the ...

Embodiment 2

[0040] The difference between this embodiment and Embodiment 1 is that the arrangement of the discharge needles 2 is different, such as Figure 5-8 As shown, the discharge needle board 3 has two discharge needles 2, and the even discharge needles 2 are located in the middle of the closest two of the odd discharge needles 2; The arrangement of the discharge needles matches the arrangement, and the position of the pinhole corresponds to the position of the discharge needle 2 on the discharge needle plate 3; the combination of the discharge needle plate 3, the anti-high voltage insulating material module 7 and the discharge needle 3 is as follows: Figure 8 shown.

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Abstract

The invention discloses a method for improving evenness of thin polyester spunbond nonwoven fabric and an electrostatic tow separator device for carrying out the method. The method and device are applied to production equipment of slit type spunbond nonwoven fabric. An electrostatic tow separator is installed at an upper inlet or a lower outlet of a slit drafting device, a uniform high-voltage electric field is formed between a spray point on a discharge faller and a conductive metal target roller through high-voltage static electricity generated by a direct-current high-voltage electrostatic generator, the spray point on the discharge faller and the conductive metal target roller are on the same horizontal line, when tows pass through the uniform high-voltage electric field after being fused and cooled, a certain quantity of electric charges are exerted on the tows, due to the fact that the tows are with the same kind of the charges and reject mutually, repulsive force is low at large intervals, and repulsive force is high at small intervals; in addition, the device is matched with a net-laying curtain made of conductive carbon fibers, unnecessary charges on the tows can be transferred in time when the tows form a net, and the aim of uniformly separating the tows is achieved.

Description

technical field [0001] The invention relates to a production technology of thin polyester spun-bonded nonwoven fabric. Background technique [0002] Spunbond nonwovens are also called nonwovens, and their raw materials are polyester, mainly made of polypropylene spunbond nonwovens and polyester spunbond nonwovens. It uses the principle of polyester melt spinning to form a web, and the melt-extruded polyester is made into a non-woven fabric after spinning, cooling, drafting, web forming and other processes. Multidisciplinary technologies have developed rapidly in recent years. Widely used in household, medical, agricultural, geotechnical and other industries. [0003] The speed of spunbonded nonwovens is drawn by airflow very fast, reaching thousands of meters per minute. At the same time, the height of the spinneret from the net curtain is only a few meters. The problem of uneven distribution seriously affects the performance of the product. Therefore, the unevenness of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D11/02
Inventor 刘力张初阳
Owner DONGHUA UNIV
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