Terylene film-coated filter material

Abstract

The utility model discloses a polyester film filter material which comprises a polyester film, a loading layer, a dust facing surface fiber layer, a base cloth layer and an air purifying surface fiber layer which are sequentially arranged from outside to inside, the dust facing surface fiber layer, the base cloth layer and the air purifying surface fiber layer form a filter material; and the load layer is used for filtering particulate matters. Therefore, the terylene film not only enhances the wear resistance and tear resistance of the filter material, but also further improves the filtering efficiency and waterproof performance of the filter material, and the price of the terylene film is lower than that of a traditional PTFE film, so that the cost is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of filter media technology, and in particular to a polyester membrane filter media. Background Technology

[0002] The currently widely used membrane material, polytetrafluoroethylene (PTFE), is expensive, resulting in high production costs. This poses a challenge to the economic efficiency and sustainable development of the filter media industry. While PTFE holds a place in high-end filtration due to its excellent corrosion resistance, high temperature resistance, and low coefficient of friction, its high cost limits its application in a wider range of fields. Meanwhile, with increasingly stringent environmental regulations and continuous advancements in industrial production technology, the industry's functional requirements for filter media are constantly increasing. In addition to basic particulate matter interception, filter media must also possess complex functions such as integrated desulfurization, denitrification, and dust removal to meet the specific needs of high-pollution industries such as coal-fired power plants, steel smelting, and cement manufacturing. Utility Model Content

[0003] The purpose of this invention is to provide a polyester membrane filter material to solve the problem of high cost of existing polytetrafluoroethylene (PTFE) materials. It has the advantages of low cost and improved filtration accuracy and tensile strength.

[0004] To achieve the above objectives, the solution of this utility model is:

[0005] A polyester membrane filter material includes, from the outside to the inside, a polyester membrane, a load layer, a dust-receiving fiber layer, a base fabric layer, and a clean air fiber layer; the dust-receiving fiber layer, the base fabric layer, and the clean air fiber layer constitute the filter material substrate; the load layer is used to filter particulate matter.

[0006] Furthermore, the polyester coating is formed by coating molten polyester resin onto the surface of the load layer using hot melt spraying technology.

[0007] Furthermore, the thickness of the polyester coating is between 1 micrometer and 100 micrometers.

[0008] Furthermore, the support layer is composed of activated carbon.

[0009] Furthermore, the load layer is made of activated carbon felt and is fixed to the dust-facing fiber layer of the filter material substrate by needle punching or bonding.

[0010] Furthermore, the dust-facing fiber layer, the base fabric layer, and the air-purifying fiber layer are formed into the filter material substrate through reinforcement processes such as needle punching, hydroentangling, hot pressing, or chemical bonding.

[0011] After adopting the above technical solution, the present invention has the following technical effects:

[0012] ① Polyester coating not only enhances the abrasion resistance and tear resistance of the filter media, but also further improves its filtration efficiency and waterproof performance. Moreover, it is cheaper than traditional PTFE membranes, effectively reducing costs.

[0013] ② The thickness of polyester membrane can be freely adjusted during processing to adapt to various required air permeability, while PTFE membrane can generally only be coated onto the filter material surface by hot pressing.

[0014] ③ The media filling of the load layer can effectively improve the filter media's ability to capture airborne particulate matter. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the layer structure of an embodiment of the present utility model;

[0016] Figure 2 This is a cross-sectional view of the layer structure of an embodiment of the present utility model.

[0017] Labeling explanation: 1. Polyester coating, 2. Loading layer, 3. Dust-facing fiber layer, 4. Base fabric layer, 5. Air-cleaning fiber layer, 10. Filter material substrate. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Figure 1 As shown, this utility model discloses a polyester membrane filter material, which includes a polyester membrane 1, a load layer 2, a dust-receiving fiber layer 3, a base fabric layer 4, and a clean air fiber layer 5 arranged sequentially from the outside to the inside.

[0020] The following are specific embodiments of the present invention.

[0021] First, through a precise reinforcement process, the dust-facing fiber layer 3, the base fabric layer 4, and the clean air-facing fiber layer 5 are firmly fixed together to form the filter media substrate 10. This ensures the overall structural stability and durability of the filter media substrate 10. Alternatively, commonly used existing filter media substrates 10 can be directly selected. The filter media substrate 10 can be made of fibers such as polyphenylene sulfide fiber (PPS), polyimide fiber (PI), polyester (PE), acrylic (DT), glass fiber (GL), and aramid (MX).

[0022] Specifically, reinforcement processes can employ methods such as needle punching, hydroentangling, hot pressing, or chemical bonding, each with its unique advantages.

[0023] Secondly, after the dust-receiving fiber layer 3, the base fabric layer 4, and the air-purifying fiber layer 5 are fixed, the surface of the dust-receiving fiber layer 3 is filled with a loading medium. The loading medium can be selected from functional or highly efficient filtration particles, such as activated carbon. Filling the loading layer with this medium can effectively improve the filter media's ability to capture airborne particles; for example, filling with activated carbon can adsorb some fine particles.

[0024] In this embodiment, the load layer 2 can be made of activated carbon felt and can be fixed to the filter material substrate 10 by needle punching or bonding to fill the space between the filter material substrate 10 and the polyester membrane 1.

[0025] Finally, using an advanced hot melt spraying process, a polyester film 1 is applied to the surface of the load layer 2 of the filter substrate 10.

[0026] Specifically, a high-pressure airless spraying device is used to uniformly spray molten polyester resin in the form of droplets onto the load layer 2 on the filter substrate 10, and then rapidly cools and solidifies it to form a dense film to constitute the polyester coating 1.

[0027] In practice, depending on the actual needs, the thickness of the polyester coating can be controlled between a few micrometers and tens of micrometers to ensure that the air permeability of the filter material is not affected while providing sufficient protection.

[0028] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected by this utility model. It should be noted that for those skilled in the art, equivalent changes and modifications without departing from the principle of this utility model should still fall within the protection scope of this utility model.

[0029] In the description of the embodiments of this application, it should be understood that the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships commonly used when the product is in use, or the orientations or positional relationships commonly understood by those skilled in the art. These are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In the description of this application, "a plurality of" and "several" mean two or more, unless otherwise explicitly specified.

Claims

1. A polyester membrane filter material, characterized in that: It includes, from the outside in, a polyester coating, a load layer, a dust-receiving fiber layer, a base fabric layer, and a clean air fiber layer; the dust-receiving fiber layer, the base fabric layer, and the clean air fiber layer constitute the filter material substrate; the load layer is used to filter particulate matter.

2. The polyester membrane filter material according to claim 1, characterized in that: The polyester coating is formed by applying molten polyester resin to the surface of the load layer using hot melt spraying technology.

3. The polyester membrane filter material according to claim 1 or 2, characterized in that: The thickness of the polyester coating is between 1 micrometer and 100 micrometers.

4. The polyester membrane filter material according to claim 1, characterized in that: The support layer is composed of activated carbon.

5. The polyester membrane filter material according to claim 4, characterized in that: The load layer is made of activated carbon felt and is fixed to the dust-facing fiber layer of the filter material substrate by needle punching or bonding.

6. The polyester membrane filter material according to claim 1, characterized in that: The dust-facing fiber layer, the base fabric layer, and the air-cleaning fiber layer are formed into the filter material substrate through reinforcement processes such as needle punching, hydroentangling, hot pressing, or chemical bonding.

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