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Filter material for air filter

A technology of air filter and filter material, which is applied in the direction of filtration and separation, chemical instruments and methods, textiles and papermaking, etc., can solve the problems of warping and rolling up of laminated non-woven fabrics, and achieve the suppression of warping and rolling up , low pressure loss and sufficient bonding strength

Inactive Publication Date: 2021-11-16
MITSUBISHI PAPER MILLS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a non-welded portion of the imaginary circle diameter is generated, and when the pattern of an absorbent article is applied to a filter material obtained by laminating non-woven fabrics, warping and curling of the laminated non-woven fabric are likely to occur, and improvement is required.

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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  • Filter material for air filter
  • Filter material for air filter
  • Filter material for air filter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0150] Use gram weight 70g / m 2 Polyester spunbonded nonwovens, and for a grammage of 25 g / m 2 Polypropylene melt-blown non-woven fabric with permanent electrification processing, 0.3-0.5μm counting method collection efficiency at 5.3cm / sec is 99.97% or more, and laminated non-woven fabric is bonded by ultrasonic heat welding , to make a filter material formed of this laminated non-woven fabric. At this time, the pattern as the welded part forms a repeated pattern, and a filter medium is obtained in which the pattern units constituting the pattern are arranged as follows.

[0151] [Explanation about the arrangement of pattern units in Embodiment 1]

[0152] During the ultrasonic heat welding process, it is arranged in such a way that the directions of the invisible equilateral triangles ABC are kept uniform so that they do not overlap each other, and the midpoint of each side of the equilateral triangle ABC coincides with the vertices of the adjacent equilateral triangles. (...

Embodiment 2

[0153] Embodiment 2, comparative example 1

[0154] Obtain the filter material of embodiment 2 and comparative example 1, embodiment 2 is all the same as embodiment 1 except that the length on one side of the invisible equilateral triangle ABC is 20mm, comparative example 1 is except that the length on one side of the equilateral triangle ABC of invisible is Except for 25 mm, it is the same as in Example 1.

Embodiment 3

[0155] Embodiment 3, comparative example 2

[0156] Obtain the filter material of embodiment 3 and comparative example 2, embodiment 3 is all the same as embodiment 2 except that the size of pattern unit is 1mm * 3mm, comparative example 2 is all the same as that except that the size of pattern unit is 0.5mm * 1mm Example 2 is the same.

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Abstract

The invention discloses a filter material for an air filter, and the filter material is characterized in that two or more layers of nonwoven fabric are bonded by fusing, a plurality of design elements that are formed by the shapes of fused sections become a group to form a design showing a repeating pattern, the average area of one design element is 1-4.2mm2, the minimum distance between neighboring design elements is 10mm or less, and the value of the fused section obstruction rate (percentage) divided by the average area of one design element is 0.8-1.2% / mm2, said fused section obstruction rate corresponding to the ratio of the total area of the design elements included in the repeating pattern to the area of the repeating pattern formed by the design elements.

Description

technical field [0001] The present invention relates to a filter material for air cleaners used in air conditioners and the like. Hereinafter, "filter material for air cleaners" may be abbreviated as "filter material". Background technique [0002] In recent years, air conditioners such as air conditioners, air cleaners, humidifiers, and dehumidifiers have been widely used in all living spaces such as houses, offices, factories, and automobiles due to changes in the living environment and increased health awareness. In these air conditioners, various air filters are often used in order to obtain purified air. For these air conditioners and air cleaners, high functionality and multifunctionality are required year by year. [0003] For the air filter, dust collection function and deodorization function are required. In addition, the function of removing specific harmful gases, antibacterial function, antiviral function, anti-allergen function, etc. are also required. It is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/16B32B5/26D04H1/4374
CPCD04H1/4374B32B5/26B01D39/16
Inventor 佐藤史洋松冈昌伸保坂健一
Owner MITSUBISHI PAPER MILLS LTD
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