TW202404683A - Method for manufacturing airborne molecular contamination filter - Google Patents

Abstract

A method for manufacturing Airborne Molecular Contamination filter comprises: providing organic fiber and natural fiber; producing needle-bonded fabric after mixing the fibers; defining a filtering area and a plate area in the needle-bonded fabric; and producing straight ripples in the filtering area.

Description

Preparation method of suspended gaseous pollutant filter element

The present invention relates to a method for preparing a filter element, and in particular to a method for preparing a filter element for suspended gaseous pollutants.

Taiwan Patent No. 541201, air purification method and air purification device used in the method, discloses a preparation method of sheet filter elements. Paper made of glass fiber, ceramic fiber, or alumina fiber is soaked in a mixture of alumina sol, etc. The slurry of the binding material and filler material such as alumina hydrate is then dried and corrugated, followed by drying and heat treatment to remove moisture and organic components.

The sheet element usually contains 60 to 93% by weight of filling material or bonding material, 7 to 40% by weight of fiber substrate, and preferably 70% to 88% by weight of filling material or bonding material, and 12 to 30% by weight. % fiber substrate.

The corrugations of two adjacent sheet-like components have diagonal directions and are staggered and stacked repeatedly. In the corrugation, a cavity is formed between the wave crest and the wave trough, and the height of the wave crest is about 2.0mm ~ 8.0mm, preferably 3.0mm ~ 5.0mm. If the chamber size is less than 2.0 mm, it is difficult to manufacture. In addition, if the chamber size exceeds 8.0 mm, the removal efficiency of gaseous chemical pollutants decreases. The peak distance between two parallel corrugations is usually 2.5mm ~ 12.0mm, preferably 5mm ~ 10.0mm. The stacked height of chip components is usually 100mm ~ 1000mm, preferably 200mm ~ 800mm.

The angle between the direction of corrugation extension and the direction of air circulation is usually within the range of 15 to 45 degrees, preferably within the range of 25 to 35 degrees. This is because when the inclination angle is within the above range, the downstream velocity is within an appropriate range and the contact efficiency is improved. The angle at which the extending directions of the corrugations of stacked adjacent corrugated sheets intersect each other is usually in the range of 30 to 90 degrees, preferably in the range of 50 to 70 degrees. If the angle at which the laminated corrugated sheets intersect with each other is within the above-mentioned angle range, and the inclination angle is within the above-mentioned range of 15 to 45 degrees, the air to be processed in the humidification mechanism will be affected by the increase in the actual contact area between the air and water being processed and the honeycomb. The efficiency of humidification is increased. In addition, the efficiency of dehumidification through condensation of moisture in the air to be processed in the condensation mechanism is also increased.

However, filter elements composed of inorganic fibers such as glass fiber and alumina are relatively fragile and have poor chemical resistance. Therefore, it is necessary to propose a new preparation method to improve the chemical resistance of filter elements.

One embodiment of the present invention provides a method for preparing a chemical-resistant suspended gaseous pollutant filter element, which includes: providing polyester fiber, nylon, rayon, hot-melt cotton, and moisture-absorbent cotton; mixing the polyester fiber, the Nylon, the rayon, the hot-melt cotton, and the moisture-absorbent cotton are then needle-rolled to form a cloth-like object; a filtering area and a flat plate area of the cloth-like object are defined, and the flat plate area surrounds the filtering area; And the filter area is processed by vacuum molding to form a plurality of parallel linear corrugations.

One embodiment of the present invention provides a method for preparing a chemical-resistant suspended gaseous pollutant filter element, which includes: providing organic fibers and natural fibers; after mixing the organic fibers and the natural fibers, forming a cloth shape by a needle rolling method object; defining a filtering area and a flat plate area of the cloth, wherein the filtering area is surrounded by the flat plate area; and using vacuum blister to process the filtering area to form a plurality of parallel linear corrugations.

Referring to Figure 1, there is a flow chart of a method for preparing a filter element for suspended gaseous pollutants. In step 11, organic fibers and natural fibers are provided. In one embodiment, polyester fiber, nylon, and rayon are provided, accounting for a total of 50% to 80%; hot-melt cotton, and moisture-absorbent cotton account for a total of 5% to 40%. Step 12: After mixing the above-mentioned fibers, they are processed into a cloth-like object using a needle rolling method, with a thickness of 0.4 mm ~ 1.5 mm. In one embodiment, the cloth-like object is rectangular. Step 13: Define the filter area and the flat plate area on the cloth. The flat area is located at the edge of the cloth, with a width of 3mm~10mm, surrounding the filter area. Step 14: Process the filter area to form linear corrugations. For the filter area, vacuum molding is used to process and form a plurality of convex linear corrugations parallel to each other. The height of the convex crests is 2.0mm ~ 8.0mm, and the crest spacing between two adjacent corrugations is 2.5mm ~ 12.0mm.

Referring to Figure 2, the suspended gaseous pollutant filter element 2 prepared according to the above method includes a filter area 21 and a flat plate area 22. The width of the flat plate area 22 is 3 mm ~ 10 mm, including two opposite long sides and two opposite short sides. The filter area 21 includes a plurality of convex linear corrugations parallel to each other, and the angle X between the extending direction of the corrugations and the long side is 45 degrees to 75 degrees.

Referring to FIG. 3 , the cross-sectional view of the filtering area 21 includes a plurality of convex corrugations 23 , and the apex of the corrugations is the crest 24 . The height C of the wave crest is 2.0mm ~ 8.0mm, and the distance D between two adjacent corrugations is 2.5mm ~ 12.0mm.

Refer to Figure 4, which is a stacking diagram of the suspended gaseous pollutant filter element 2 when in use. When two adjacent filter elements 2 are stacked, the linear corrugations of the filter area 21 are stacked in a staggered manner in their extending directions. The thickness of the filter element 2 after repeated stacking is 200mm ~ 800mm.

11: Provide organic fibers and natural fibers 12: After mixing, use needle rolling to form a cloth-like material 13: Define the filter area and plate area 14: The filter area is processed to form linear corrugations 2:Filter element 21:Filter area 22: Flat area 23: Ripple 24:Crest

Figure 1 is a flow chart of a method for preparing a filter element for suspended gaseous pollutants according to an embodiment of the present invention.

Figure 2 is a schematic diagram of a suspended gaseous pollutant filter element prepared according to the above method.

Figure 3 is a cross-sectional view of the filter area of the above filter element.

Figure 4 is a schematic diagram of a suspended gaseous pollutant filtering device according to an embodiment of the present invention.

11: Provide organic fibers and natural fibers

12: After mixing, use needle rolling to form a cloth-like material

13: Define the filter area and plate area

14: The filter area is processed to form linear corrugations

Claims (9)

A method for preparing a filter element for suspended gaseous pollutants, including: Provide polyester fiber, nylon, rayon, hot-melt cotton, moisture-absorbent cotton; After mixing the polyester fiber, the nylon, the rayon, the hot-melt cotton, and the moisture-absorbent cotton, a cloth-like object is formed by a needle rolling method; defining a filtration area and a flat panel area of the cloth, wherein the flat panel area surrounds the filtration area; and The filter area is processed by vacuum molding to form a plurality of parallel linear corrugations. The method described in claim 1, wherein the polyester fiber, the nylon, and the rayon account for a total proportion of 50% to 80%. The method described in claim 1, wherein the hot-melt cotton and the moisture-absorbent cotton account for a total proportion of 5% to 40%. The method as described in claim 1, wherein the flat plate area includes a width of 3mm ~ 10mm. A method for preparing a filter element for suspended gaseous pollutants, including: Provide organic and natural fibers; After mixing the organic fiber and the natural fiber, a cloth-like object is formed by needle rolling; defining a filter area and a flat area of the cloth, wherein the filter area is surrounded by the flat area; and The filter area is processed by vacuum molding to form a plurality of parallel linear corrugations. The method of claim 5, wherein the organic fiber and the natural fiber include polyester fiber, nylon, rayon, hot-melt cotton, and moisture-absorbent cotton. The method described in claim 6, wherein the polyester fiber, the nylon, and the rayon account for a total proportion of 50% to 80%. The method described in claim 6, wherein the hot-melt cotton and the moisture-absorbent cotton account for a total proportion of 5% to 40%. The method as described in claim 5, wherein the flat plate area includes a width of 3mm ~ 10mm.