Manufacturing method of through-hole adsorption filter material and through-hole adsorption filter material

Abstract

The invention discloses a manufacturing method of a through-hole adsorption filter material and the through-hole adsorption filter material. The manufacturing method comprises the following steps: step 1, determining the material, the structure and the arrangement of a supporting filler strip according to the stiffness requirement of the required through hole adsorption filter material; 2, a plurality of supporting filler strips are pasted to the adsorption sheet in parallel at intervals, and the other side faces of the supporting filler strips are coated with glue; 3, the adsorption sheet is cut into cut-parts in the direction perpendicular to the length direction of the supporting filler strips, then the cut-parts are stacked and extruded, and the adsorption filter material is formed; and step 4, drying the adsorption filter material in an extrusion state. The manufacturing method is easy to operate, the through-hole adsorption filter materials with different stiffness can be manufactured according to actual requirements, and the application scene of the through-hole adsorption filter materials is expanded; moreover, the through-hole adsorption filter material manufactured by the manufacturing method has the advantages of small resistance, uniform resistance distribution, good structural stability, unobvious marginal effect and the like, and can be suitable for high-performance application.

Description

Technical Field

[0001] The present invention belongs to the technical field of adsorption filtration, and particularly relates to a manufacturing method of a through-hole adsorption filter material and a through-hole adsorption filter material. Background Art

[0002] When performing air filtration, carbon-filled grilles, corrugated filter sheets, pleated carbon non-woven fabrics or honeycomb materials are usually used as filter materials. However, for carbon-filled grilles, filter meshes need to be adhesively bonded front and back as coverings to prevent the activated carbon from spilling out, resulting in a cumbersome manufacturing process. Moreover, plastic grilles are used, which have poor bending ability and generate plastic solid waste. When manufacturing corrugated filter sheets, paper needs to be pressed into single-layer corrugations, then coated with glue and stacked, and finally cut and spliced. The manufacturing process is also cumbersome, and the paper fluffing during cutting will increase the air resistance, leading to a reduction in its filtration performance. Among them, although the performance of corrugated filter sheets can be improved by reducing the corrugation height, there is an obvious marginal effect, resulting in a narrow performance range and being unsuitable for high-performance applications. For pleated carbon non-woven fabrics, due to the non-open structure, once the internal material absorbs moisture, the moisture is not easily dissipated and participates in reactions therein, leading to a serious souring problem. Although honeycomb materials are simple to process and manufacture and have flexibility, they are difficult to evenly expand during stretching, resulting in uneven pore sizes and seriously affecting their performance. It can be seen that the existing filter materials all have their own drawbacks, and the stiffness is non-adjustable, resulting in limited application scenarios. Summary of the Invention

[0003] In view of the above problems, the present invention discloses a manufacturing method of a through-hole adsorption filter material and a through-hole adsorption filter material to overcome or at least partially solve the above problems.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] On the one hand, the present invention discloses a manufacturing method of a through-hole adsorption filter material, and the manufacturing method includes the following steps:

[0006] Step 1, determine the material, structure and arrangement of the support pad strips according to the stiffness requirement of the required through-hole adsorption filter material;

[0007] Step 2, adhesively bond a plurality of the support pad strips parallelly and at intervals to the adsorption sheet material, and apply glue to the other side surface of the support pad strips;

[0008] Step 3, cut the adsorption sheet material into cut pieces along the direction perpendicular to the length of the support pad strips, and then stack and extrude a plurality of the cut pieces to form an adsorption filter material;

[0009] Step 4, dry the adsorption filter material in an extruded state.

[0010] Further, the specific content of Step 1 is as follows:

[0011] When a relatively high stiffness is required for the through-hole adsorption filter material, the support cushion strips are selected from cardboard strips, plastic strips, glass fiber strips or multi-layer bonded and laminated paper strips, and the support cushion strips between the respective cut pieces are overlapped;

[0012] When a moderate stiffness is required for the through-hole adsorption filter material, the support cushion strips are selected from foam strips or corrugated paper strips, and the support cushion strips between the respective cut pieces are overlapped;

[0013] When a relatively low stiffness is required for the through-hole adsorption filter material, the support cushion strips are selected from foam strips or corrugated paper strips, and the support cushion strips between the respective cut pieces are arranged in a staggered manner.

[0014] Furthermore, the corrugated paper strip is an activated carbon paper strip with a corrugated structure, and the height of the corrugations in the corrugated paper strip is 0.6 mm to 2 mm.

[0015] Furthermore, in step 2, before adhering the support cushion strips to the adsorption sheet material, the adsorption sheet material is extruded to form a corrugated structure on the adsorption sheet material.

[0016] Furthermore, the adsorption sheet material has folds or openings.

[0017] Furthermore, before step 1, an adsorption layer is formed by spraying, printing or impregnating on the adsorption sheet material.

[0018] Furthermore, when the adsorption layer is sprayed or printed on the adsorption sheet material, an adhesion position not covered by the adsorption layer is reserved on the adsorption sheet material for the support cushion strips.

[0019] Furthermore, the material of the adsorption layer is silica gel, zeolite or activated carbon.

[0020] Furthermore, the width of the support cushion strips is 5 mm to 8 mm, and the thickness of the support cushion strips is 0.5 mm to 2 mm.

[0021] On the other hand, the present invention discloses a through-hole adsorption filter material, which is prepared by using the manufacturing method of the through-hole adsorption filter material described above.

[0022] The advantages and beneficial effects of the present invention are:

[0023] The manufacturing method of the through-hole adsorption filter material in the present invention is simple to operate, and can produce through-hole adsorption filter materials with different stiffnesses according to actual needs, expanding the application scenarios of the through-hole adsorption filter materials; moreover, the through-hole adsorption filter material prepared by this manufacturing method has the advantages of small resistance, uniform resistance distribution, good structural stability and insignificant edge effect, and can be suitable for high-performance applications. Description of the Drawings

[0024] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present invention. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0025] Figure 1 It is a flowchart of the implementation steps of the manufacturing method of the through-hole adsorption filter material in an embodiment of the present invention;

[0026] Figure 2 It is a cross-sectional view of the through-hole adsorption filter material perpendicular to the length direction of the support pad strip in an embodiment of the present invention;

[0027] Figure 3 It is a cross-sectional view of the through-hole adsorption filter material perpendicular to the length direction of the support pad strip in another embodiment of the present invention.

[0028] In the figure: 1, cut piece; 2, support pad strip; 3, through hole. Detailed Embodiments

[0029] To make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present invention.

[0030] The following will detail the technical solutions provided by each embodiment of the present invention in conjunction with the drawings.

[0031] An embodiment of the present invention provides a manufacturing method of a through-hole adsorption filter material, as Figure 1 shown, the manufacturing method includes the following steps:

[0032] Step 1, determine the material, structure and arrangement of the support pad strip according to the stiffness requirements of the required through-hole adsorption filter material.

[0033] Step 2, adhesively bond a plurality of support pad strips parallelly and at intervals to the adsorption sheet material, and apply glue on the other side surface of the support pad strip.

[0034] Among them, the interval distance between each support pad strip is the same, and the interval distance can be adjusted according to needs. The interval distance between two adjacent support pad strips is preferably 20 mm to 60 mm.

[0035] Step 3: Cut the adsorption sheet into slices along the length direction perpendicular to the support cushion strip, and then stack and press multiple slices to form an adsorption filter material. In this way, adjacent slices 1 are adhesively fixed by the support cushion strip 2, and the formed structure is as shown in Figure 2 shown. The upper and lower slices 1 and the two support cushion strips 2 between the upper and lower slices 1 form a through-hole 3 for air to pass through.

[0036] Step 4: Dry the adsorption filter material in the pressed state.

[0037] Among them, drying the adsorption filter material in the pressed state can make the bonding between the support cushion strip and the slice more firm.

[0038] For example, using a plastic sheet with conductive ink inside as the adsorption sheet, and selecting an insulating material as the support cushion strip, a through-hole adsorption filter material with excellent electrostatic dust collection performance can be produced by the above manufacturing method; using aluminum foil or other conductors as the adsorption sheet, and selecting an insulator material as the support cushion strip, a through-hole adsorption filter material with excellent electrostatic dust removal performance can also be produced by the above manufacturing method.

[0039] In summary, the manufacturing method of the through-hole adsorption filter material in this embodiment is simple in operation, can produce through-hole adsorption filter materials with different stiffnesses according to actual needs, and expands the application scenarios of the through-hole adsorption filter material; moreover, the through-hole adsorption filter material produced by this manufacturing method has the advantages of small resistance, uniform resistance distribution, good structural stability, and insignificant edge effect, and can be suitable for high-performance applications.

[0040] In this embodiment, step 1 is specifically as follows:

[0041] When the required through-hole adsorption filter material has a high stiffness (i.e., the stiffness is greater than 100 mN·m), the support cushion strip is selected from cardboard strips, plastic strips, glass fiber strips or multi-layer bonded and laminated paper strips, as shown in Figure 2 shown, and the support cushion strips 2 between the slices 1 of each layer are overlapped; in this way, the overall through-hole adsorption filter material produced is relatively stiff.

[0042] When the required through-hole adsorption filter material has a moderate stiffness (i.e., the stiffness is 10 mN·m to 80 mN·m), the support cushion strip is selected from foam strips or corrugated paper strips, as shown in Figure 2 shown, and the support cushion strips 2 between the slices 1 of each layer are overlapped; in this way, the through-hole adsorption filter material produced has a moderate stiffness. Among them, the corrugated paper strip is cut from corrugated paper into strips.

[0043] When the required through-hole adsorption filter material has a low stiffness (i.e., the stiffness is less than 10 mN·m), the support cushion strip is selected from foam strips or corrugated paper strips, as shown in Figure 3As shown, the support cushion strips 2 between the layers of cut pieces 1 are arranged in a staggered manner. In this way, the overall through-hole adsorption filter material produced is relatively soft.

[0044] Furthermore, the corrugated paper strip is an activated carbon paper strip with a corrugated structure, making the adsorption and filtration effect of the through-hole adsorption filter material better; the height of the corrugations in the corrugated paper strip is 0.6 mm to 2 mm, which can not only ensure that the support cushion strip has good support ability, but also reduce the stiffness of the hole adsorption filter material.

[0045] In this embodiment, in step 2, before adhering the support cushion strip to the adsorption sheet material, the adsorption sheet material is extruded to form a corrugated structure on the adsorption sheet material. It should be noted that when adhering the support cushion strip to the adsorption sheet material, the support cushion strip is arranged along the corrugation direction, so that the support cushion strip and the adsorption sheet material are adhesively connected at points. By forming a corrugated structure on the adsorption sheet material, the through-hole adsorption filter material has strong anti-bending ability.

[0046] Moreover, the adsorption sheet material has folds or openings, so that the air flow is disturbed when passing through the through-holes, thereby increasing the adsorption and filtration effect of the adsorption sheet material.

[0047] Furthermore, the width of the support cushion strip is 5 mm to 8 mm, and the thickness of the support cushion strip is 0.5 mm to 2 mm. The support cushion strip of this size takes into account both the support ability and flexibility, making the performance of the through-hole adsorption filter material better.

[0048] In other embodiments, before step 1, an adsorption layer is formed on the adsorption sheet material by spraying, printing or impregnating, thereby enhancing the adsorption ability of the through-hole adsorption filter material. Among them, the material of the adsorption layer can be silica gel, zeolite or activated carbon. Of course, the adsorption layer can also adopt other materials with adsorption ability.

[0049] In addition, when the adsorption layer is sprayed or printed on the adsorption sheet material, an adhesive position that is not covered by the adsorption layer is reserved on the adsorption sheet material for the support cushion strip, so that the adsorption sheet material and the support cushion strip are adhered more firmly, thereby increasing the structural strength of the through-hole adsorption filter material.

[0050] In another embodiment of the present invention, a through-hole adsorption filter material is provided. The through-hole adsorption filter material is produced by using the production method of the through-hole adsorption filter material in the above embodiment; this through-hole adsorption filter material has the advantages of small resistance, uniform resistance distribution, good structural stability and no obvious edge effect.

[0051] Example 1

[0052] Select activated carbon paper with an activated carbon content of 45% (mass ratio) and a thickness of 0.6 mm as the adsorption sheet material, and the unit area mass of the activated carbon paper is 180 g / m 2, select corrugated paper strips with a corrugation height of 1.1 mm as the support cushion strips. The width of the support cushion strips is 5 mm, and the spacing between the support cushion strips in the same layer is 42 mm. Pass the support cushion strips through a gluing machine to apply glue to their lower sides, and then bond and compound them with the activated carbon paper through a grooving and laminating roller. After preliminary curing, apply glue to the upper sides of the support cushion strips, and then introduce them into a honeycomb paper core cutting machine. Cut them into slices and stack them by pushing and pressing to form a through-hole adsorption filter material. Among them, the specification of the through-hole adsorption filter material is 120 mm * 120 mm * 15 mm (length * width * thickness / height), and the layer spacing between the slices is about 1.1 mm.

[0053] Example 2

[0054] Select activated carbon paper with an activated carbon content of 45% (by mass) and a thickness of 0.6 mm as the adsorption sheet material, and the unit area mass of the activated carbon paper is 180 g / m 2 , select corrugated paper strips with a corrugation height of 1.1 mm as the support cushion strips. The width of the support cushion strips is 5 mm, and the spacing between the support cushion strips in the same layer is 42 mm. Pass the support cushion strips through a gluing machine to apply glue to their lower sides, and then bond and compound them with the activated carbon paper through a grooving and laminating roller. After preliminary curing, apply glue to the upper sides of the support cushion strips, and then introduce them into a honeycomb paper core cutting machine. Cut them into slices and stack them by pushing and pressing to form a through-hole adsorption filter material. Among them, the specification of the through-hole adsorption filter material is 120 mm * 120 mm * 45 mm (length * width * thickness / height), and the layer spacing between the slices is about 1.1 mm.

[0055] Example 3

[0056] Select activated carbon paper with an activated carbon content of 45% (by mass) and a thickness of 0.6 mm as the adsorption sheet material, and the unit area mass of the activated carbon paper is 180 g / m 2 , select corrugated paper strips with a corrugation height of 0.7 mm as the support cushion strips. The width of the support cushion strips is 5 mm, and the spacing between the support cushion strips in the same layer is 42 mm. Pass the support cushion strips through a gluing machine to apply glue to their lower sides, and then bond and compound them with the activated carbon paper through a grooving and laminating roller. After preliminary curing, apply glue to the upper sides of the support cushion strips, and then introduce them into a honeycomb paper core cutting machine. Cut them into slices and stack them by pushing and pressing to form a through-hole adsorption filter material. Among them, the specification of the through-hole adsorption filter material is 120 mm * 120 mm * 15 mm (length * width * thickness / height), and the layer spacing between the slices is about 0.6 mm.

[0057] Comparative Example 1

[0058] Select activated carbon paper with an activated carbon content of 45% (by mass) and a thickness of 0.6 mm as the adsorption sheet material, and the unit area mass of the activated carbon paper is 180 g / m 2, it is pressed into corrugations, coated with glue, stacked, and cut into activated carbon corrugated filter materials with a specification of 120mm * 120mm * 15mm (length * width * thickness / height) and a layer spacing of 3mm.

[0059] Comparative Example 2

[0060] Powdered activated carbon powder, a plasticizer, and an adhesive are evenly mixed to form a mixed raw material with the activated carbon accounting for 80% by mass. Then, the mixed raw material is extruded to form a triangular pore type activated carbon honeycomb filter material with a pore inner diameter side length of 2mm and a filter material specification of 120mm * 120mm * 45mm (length * width * thickness / height).

[0061] Comparative Example 3

[0062] An activated carbon paper with an activated carbon content of 45% (by mass) and a thickness of 0.6mm is selected as the adsorption sheet material, and the unit area mass of the activated carbon paper is 180g / m 2 , it is pressed into corrugations, coated with glue, stacked, and cut into activated carbon corrugated filter materials with a specification of 120mm * 120mm * 15mm (length * width * thickness / height) and a layer spacing of 1.5mm.

[0063] The filter materials in Example 1, Example 2, Example 3, Comparative Example 1, Comparative Example 2, and Comparative Example 3 are respectively placed in a 3 - cubic - meter standard test chamber for toluene CADR (Clean Air Delivery Rate) and resistance tests. The test temperature is 25 ± 2°C, the test humidity is 40% ± 5%, and a SanAce 9G1212G1011 fan is used for blowing with a fan speed of 3000 ± 150 rpm. The test results are shown in Table 1.

[0064]

[0065] Table 1

[0066] It can be seen from the above table that the through - hole adsorption filter material in the present invention has a larger toluene CADR per unit mass and a smaller resistance, and has a more excellent adsorption and filtration effect compared with the filter materials in Comparative Example 1 to Comparative Example 3.

[0067] The above - mentioned is only the specific implementation manner of the present invention. Under the above teaching of the present invention, those skilled in the art can make other improvements or deformations on the basis of the above - mentioned embodiments. Those skilled in the art should understand that the above - mentioned specific description is only to better explain the purpose of the present invention, and the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A method for preparing a through-hole adsorption filter material, characterized in that: The production method comprises the following steps: Step 1, determining the material, structure and arrangement of the support pad according to the stiffness requirements of the through-hole adsorption filter material; Step 2, sticking a plurality of the support pads parallely and at intervals to the adsorption sheet, and applying glue on the other side of the support pads; Step 3, cutting the adsorption sheet into pieces along a length direction perpendicular to the support pad, and then stacking and extruding a plurality of the pieces to form an adsorption filter material; Step 4, drying the adsorption filter material in a squeezed state.

2. The method for making a through-porous adsorption filter material according to claim 1, characterized in that: The step 1 is specifically as follows: If the through-hole adsorption filter material is required to have a higher stiffness, the support pad strips are selected from cardboard strips, plastic strips, glass fiber strips or multi-layer adhesively laminated paper strips, and the support pad strips between the layers of the cut pieces are overlapped; If the through-hole adsorption filter material is required to have moderate stiffness, the support pad strips are selected from foam strips or corrugated paper strips, and the support pad strips between the cut pieces of each layer are overlapped; If the through-hole adsorption filter material is required to have a lower stiffness, the support pad strips are selected from foam strips or corrugated paper strips, and the support pad strips between the layers of the cut pieces are staggered.

3. The method for making a through-porous adsorption filter material according to claim 2, characterized in that: The corrugated paper strip is an activated carbon paper strip with a corrugated structure, and the height of the corrugations in the corrugated paper strip is 0.6 mm to 2 mm.

4. The method for making a through-porous adsorption filter material according to claim 1, characterized in that: In the step 2, before the support pad is adhered to the adsorption sheet, the adsorption sheet is pressed to form a corrugated structure on the adsorption sheet.

5. The method for making a through-porous adsorption filter material according to claim 4, characterized in that: The adsorption sheet has wrinkles or openings.

6. The method for making a through-porous adsorption filter material according to claim 1, characterized in that: Before the step 1, an adsorption layer is formed on the adsorption sheet by spraying, printing or dipping.

7. The method for making a through-porous adsorption filter material according to claim 6, characterized in that: When the adsorption layer is sprayed or printed on the adsorption sheet, a bonding position not covered by the adsorption layer is reserved on the adsorption sheet for the support pad.

8. The method for manufacturing a through-porous adsorption filter material according to claim 6, characterized in that: The material of the adsorption layer is silica gel, zeolite or activated carbon.

9. The method for producing a through-porous adsorption filter material according to any one of claims 1 to 8, characterized in that: The width of the support pad is 5 mm to 8 mm, and the thickness of the support pad is 0.5 mm to 2 mm.

10. A through-hole adsorption filter material, characterized in that: The through-porous adsorption filter material is produced by the method for producing a through-porous adsorption filter material according to any one of claims 1 to 9.

Images