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Compounding method of melt-blown cloth and composite melt-blown cloth prepared thereby

A melt-blown cloth and the resulting technology are applied in chemical instruments and methods, non-polymer organic compound adhesives, synthetic resin layered products, etc. Uniform coating and other problems, to achieve the effect of maintaining filtration efficiency and air resistance, improving composite strength, and easy automation

Active Publication Date: 2020-09-18
TIANJIN TEDA FILTERS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method can only control the amount of glue produced by controlling the screw speed of the hot melt glue extruder. The size of the glue thread can be seen with the naked eye, so the energy consumption is large, and it is difficult to coat evenly and the thickness of the coating is also difficult to control. , especially the glue application will also cause the gap of the melt-blown cloth to be blocked, which increases the filter air resistance of the composite melt-blown cloth

Method used

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  • Compounding method of melt-blown cloth and composite melt-blown cloth prepared thereby
  • Compounding method of melt-blown cloth and composite melt-blown cloth prepared thereby
  • Compounding method of melt-blown cloth and composite melt-blown cloth prepared thereby

Examples

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Effect test

Embodiment 1

[0046] According to the present invention, adopt following composite method to prepare composite meltblown cloth:

[0047] (1) Use a coating roller to roll-coat the water-based adhesive on the melt-blown cloth, and then use a pressure roller to superimpose it on the polypropylene non-woven fabric;

[0048] Wherein, the coating roller is provided with a plurality of parallel grooves extending to both ends of the roller in an evenly distributed manner on the surface of the roller, the depth of the grooves is 25 μm, the width of the notches is 70 μm, and the spacing is 0.6 mm , and the angle between the extension direction of the groove and the rotation direction of the coating roller is 45°,

[0049] Wherein, the water-based adhesive comprises 5% by weight of water-based acrylic acid, 2% by weight of polyethylene glycol 200 and 93% by weight of water, and its coating amount is 8g / m 2 , and the coating thickness is 3 μm.

[0050] (2) Dry the product of step (1) at 50° C. for 20...

Embodiment 2

[0052] According to the present invention, adopt following composite method to prepare composite meltblown cloth:

[0053] (1) Use a coating roller to roll-coat the water-based adhesive on the melt-blown cloth, and then use a pressure roller to superimpose it on the polypropylene non-woven fabric;

[0054] Wherein, the coating roller is provided with a plurality of parallel grooves extending to both ends of the roller in an evenly distributed manner on the surface of the roller, the depth of the grooves is 20 μm, the width of the notches is 75 μm, and the spacing is 0.3 mm , and the angle between the extension direction of the groove and the rotation direction of the coating roller is 60°,

[0055] Wherein, the water-based adhesive comprises 4% by weight of water-based acrylic acid, 3% by weight of polyethylene glycol 200 and 93% by weight of water, and its coating amount is 8g / m 2 , and the coating thickness is 4 μm.

[0056] (2) Dry the product of step (1) at 40° C. for 24...

Embodiment 3

[0058] According to the present invention, adopt following composite method to prepare composite meltblown cloth:

[0059] (1) Use a coating roller to roll-coat the water-based adhesive on the melt-blown cloth, and then use a pressure roller to superimpose it on the polypropylene non-woven fabric;

[0060] Wherein, the coating roller is provided with a plurality of parallel grooves extending to both ends of the roller in an evenly distributed manner on the surface of the roller, the depth of the grooves is 30 μm, the width of the notches is 60 μm, and the spacing is 1 mm. And the angle between the extending direction of the groove and the rotating direction of the coating roller is 30°,

[0061] Wherein, the water-based adhesive comprises 6% by weight of water-based acrylic acid, 1% by weight of polyethylene glycol 200 and 93% by weight of water, and its coating amount is 8g / m 2 , and the coating thickness is 2 μm.

[0062] (2) Dry the product obtained in step (1) at 60° C. ...

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Abstract

The invention discloses a melt-blown cloth compounding method, which comprises the following steps: (1) roll-coating a water-based adhesive on melt-blown cloth, and then superposing a support flow guide layer on the melt-blown cloth; and (2) drying the product obtained in the step (1) at 40-60 DEG C. The aqueous adhesive comprises 4-6 wt% of an adhesive, 1-3 wt% of a wetting agent and the balanceof water. According to the compounding method, the water-based adhesive can be uniformly coated on the melt-blown cloth; and the melt-blown cloth and the support flow guide layer can be compounded bythe water-based adhesive through drying at a low temperature, so that the coating amount and the coating thickness of the water-based adhesive can be accurately controlled, proper compounding strengthis provided for the melt-blown cloth, and energy conservation is facilitated through drying at a low temperature. In addition, the invention also discloses a composite melt-blown cloth prepared by the compounding method, and the filtering efficiency and air resistance of the original melt-blown cloth can be kept.

Description

technical field [0001] The invention relates to the field of catalysts, more specifically, to a method for compounding melt-blown cloth and the composite melt-blown cloth prepared therefrom. Background technique [0002] Melt-blown fabric, also known as melt-blown non-woven fabric, is a kind of non-woven fabric. It uses polypropylene as the main raw material, and uses high-speed hot air flow to process the fine flow of polymer melt extruded from the spinneret hole of the die head. Drawn, whereby microfibers are formed and collected on condensate screens or rollers while bonding to themselves. Since the melt-blown cloth is randomly distributed and bonded together by polypropylene ultra-fine fibers, the material fiber fineness diameter is between 1-2 μm, thus providing more opportunities for thermal bonding between fibers, making the melt-blown gas filter material have Larger specific surface area, higher porosity (≥75%), and it also has the characteristics of white appearanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B37/12B32B38/16B32B5/02B32B27/12B32B27/02B32B27/32B32B7/12D06M17/04C09J4/06C09J4/02
CPCB32B37/1292B32B38/164B32B5/022B32B5/26B32B7/12D06M17/04C09J4/06B32B2262/0253
Inventor 王波和妍春杨东昇吴涛
Owner TIANJIN TEDA FILTERS
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