Film-coated waterproof polyester needled felt
By adopting a coated structure on the polyester needle felt and combining waterproof and anti-static measures, the problem of degradation of waterproofing and electrostatic electricity resistance and improved service life and safety.
Patent Information
- Application Number
- CN202421290848.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-06
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-06-06
AI Technical Summary
The existing polyester needle felt has reduced waterproofing effect, electrostatic problems and safety hazards in flammable and explosive environments during use.
It adopts a coated structure, including an elastic base layer, a needle felt body, an anti-static mechanism and a waterproof mechanism. The waterproof mechanism achieves waterproofing effect through a waterproof layer, a coating layer, a reservoir capillary and vinyl fluoride dispersion, and eliminates static electricity through a conductive fiber layer and an electrostatic grounding wire.
It improves the service life and anti-static properties of polyester needle felt, and enhances safety in flammable and explosive environments.
Smart Images
Figure CN222567115U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of polyester needle punched felt, in particular to a film-coated waterproof polyester needle punched felt. Background Art
[0002] Polyester needle felt series filter materials are made by non-woven needle punching process, heat setting and other treatment methods. They are widely used in industrial dust collection, smoke control and other aspects. The existing polyester needle felt still has certain defects when used, such as;
[0003] In order to make polyester needle felt waterproof, it is necessary to impregnate the product with polytetrafluoroethylene dispersion during the production process to achieve the purpose of waterproofing. However, during the long-term use of dust collector bags, the polytetrafluoroethylene coating wears out, resulting in a decrease in the waterproof effect, which affects the service life of the dust collector bags. In addition, polyester needle felt is prone to generate static electricity during use, which affects the filtration effect. At the same time, it is easy to cause harm in the flue gas environment of flammable and explosive high-concentration dust such as coal dust, flour dust, and chemical dust. However, the existing polyester needle felts mostly have poor anti-static properties. Utility Model Content
[0004] The utility model aims to provide a film-coated waterproof polyester needle-punched felt to solve the problems raised in the above-mentioned background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a film-coated waterproof polyester needle-punched felt, comprising: an elastic base layer, a needle-punched felt body, an antistatic mechanism and a waterproof mechanism;
[0006] A needle-punched felt body is connected above the elastic base layer, an antistatic mechanism is connected above the needle-punched felt body, and a waterproof mechanism is connected above the antistatic mechanism.
[0007] Preferably, the waterproof mechanism comprises: a waterproof layer, a coating layer, a liquid storage capillary and a fluoroethylene dispersion, and a waterproof layer is pasted on the top of the antistatic mechanism.
[0008] Preferably, a coating layer is pasted on top of the waterproof layer.
[0009] Preferably, a liquid storage capillary is provided in the coating layer, and the interior of the liquid storage capillary is filled with fluoroethylene dispersion.
[0010] Preferably, the antistatic mechanism comprises: an antistatic metal wire layer, a conductive fiber layer, a conductive yarn, an electrostatic grounding wire and a reel, and the upper surface of the needle felt body is connected with the antistatic metal wire layer.
[0011] Preferably, the upper surface of the antistatic metal wire layer is connected to a conductive fiber layer, and the waterproof layer is connected to the upper surface of the conductive fiber layer.
[0012] Preferably, the elastic base layer, the needle-punched felt body, the antistatic metal wire layer and the conductive fiber layer are all connected with conductive yarns running through them.
[0013] Preferably, one side of the anti-static metal wire layer is connected to an electrostatic grounding wire.
[0014] Preferably, a reel is provided on one side of the antistatic metal wire layer, and the electrostatic grounding wire is wound on the reel.
[0015] Preferably, the antistatic metal wire layer, the conductive fiber layer, the static grounding wire and the reel are symmetrically arranged in two groups about the central axis of the elastic base layer.
[0016] Compared with the prior art, the utility model has the following beneficial effects: the waterproof layer is protected by a coating layer, and when the coating layer is worn to the liquid storage capillary, the fluoroethylene dispersion leaks out and is applied to the damaged part to repair the damaged part, thereby improving the service life of the waterproof polyester needle punched felt, grounding the static electricity grounding wire, absorbing the generated static electricity with the conductive fiber layer and the conductive fiber layer, and releasing it on the ground through the static electricity grounding wire, thereby improving the antistatic performance of the waterproof polyester needle punched felt.
[0017] The film-coated waterproof polyester needle-punched felt proposed in the utility model has the following specific contents:
[0018] 1. The waterproof polyester needle felt is waterproofed by the waterproof layer, and the coating layer protects the waterproof layer. When the coating layer is worn and the liquid storage capillary is worn out, the fluoroethylene dispersion leaks out and is applied to the damaged part to repair the damaged part, thereby enhancing the waterproof effect and thus prolonging the service life of the waterproof polyester needle felt;
[0019] 2. The static electricity is eliminated by releasing the static electricity grounding wire from the reel and grounding it, absorbing the generated static electricity with the conductive fiber layer and the conductive fiber layer, and then conducting the static electricity from the static electricity grounding wire to the ground for release, thereby improving the antistatic performance of the waterproof polyester needle-punched felt. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a schematic diagram of the main cross-sectional structure of the conductive yarn of the utility model;
[0021] Figure 2 This is a schematic diagram of the cross-sectional structure of the anti-static metal wire layer of the utility model when viewed from above;
[0022] Figure 3 This is a schematic diagram of the cross-sectional structure of the liquid storage capillary of the utility model when viewed from above;
[0023] Figure 4 It is a schematic diagram of the main structure of the utility model.
[0024] In the figure: 1. elastic base layer; 2. needle-punched felt body; 3. antistatic mechanism; 301. antistatic metal wire layer; 302. conductive fiber layer; 303. conductive yarn; 304. static grounding wire; 305. reel; 4. waterproof mechanism; 401. waterproof layer; 402. coating layer; 403. liquid storage capillary; 404. fluoroethylene dispersion. DETAILED DESCRIPTION
[0025] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0026] Embodiment 1
[0027] See also Figure 1 , Figure 3 and Figure 4 The utility model provides a technical solution: a film-coated waterproof polyester needle-punched felt, comprising: an elastic base layer 1, a needle-punched felt body 2, an antistatic mechanism 3 and a waterproof mechanism 4;
[0028] A needle-punched felt body 2 is connected above the elastic base layer 1 , an antistatic mechanism 3 is connected above the needle-punched felt body 2 , and a waterproof mechanism 4 is connected above the antistatic mechanism 3 .
[0029] The waterproof mechanism 4 includes: a waterproof layer 401, a coating layer 402, a liquid storage capillary 403 and a vinyl fluoride dispersion 404. The waterproof layer 401 is pasted on the top of the anti-static mechanism 3, and the coating layer 402 is pasted on the top of the waterproof layer 401. The coating layer 402 is provided with a liquid storage capillary 403, and the interior of the liquid storage capillary 403 is filled with vinyl fluoride dispersion 404.
[0030] In order to achieve the purpose of increasing the service life of the waterproof polyester needle felt, the waterproof layer 401 is used to waterproof the waterproof polyester needle felt, and the coating layer 402 is used to protect the waterproof layer 401 to prevent the waterproof layer 401 from being directly damaged. When the coating layer 402 is worn and the liquid storage capillary 403 is worn and the liquid storage capillary 403 is worn out, the fluoroethylene dispersion 404 inside the liquid storage capillary 403 leaks out and is smeared on the damaged part, and is gradually absorbed by the coating layer 402 to repair the damaged part. The service life of the waterproof polyester needle felt is increased by increasing the service life of the waterproof layer 401 and enhancing the waterproof ability.
[0031] Implementation II
[0032] See also Figure 1 , Figure 2 and Figure 4 It can be seen that the antistatic mechanism 3 includes: an antistatic metal wire layer 301, a conductive fiber layer 302, a conductive yarn 303, an electrostatic grounding wire 304 and a reel 305. The upper surface of the needle felt body 2 is connected with the antistatic metal wire layer 301, the upper surface of the antistatic metal wire layer 301 is connected with the conductive fiber layer 302, the waterproof layer 401 is connected to the upper surface of the conductive fiber layer 302, the elastic base layer 1, the needle felt body 2, the antistatic metal wire layer 301 and the conductive fiber layer 302 are all penetrated and connected with the conductive yarn 303, one side of the antistatic metal wire layer 301 is connected with the electrostatic grounding wire 304, one side of the antistatic metal wire layer 301 is provided with a reel 305, the electrostatic grounding wire 304 is wound on the reel 305, and the antistatic metal wire layer 301, the conductive fiber layer 302, the electrostatic grounding wire 304 and the reel 305 are symmetrically arranged in two groups about the central axis of the elastic base layer 1.
[0033] On the basis of Example 1, in order to improve the antistatic performance of the waterproof polyester needle felt, the electrostatic grounding wire 304 is wound on the reel 305 for easy storage and transportation. When in use, the electrostatic grounding wire 304 is released from the reel 305 for grounding, and the conductive yarn 303 connects the conductive fiber layer 302 and the antistatic metal wire layer 301 together to conduct static electricity together. The conductive fiber layer 302 and the conductive fiber layer 302 absorb the generated static electricity, and then conduct it from the electrostatic grounding wire 304 to the ground for release, thereby releasing the static electricity and eliminating the static electricity, thereby improving the antistatic performance of the waterproof polyester needle felt.
[0034] In actual use, the elastic base layer 1, the needle felt body 2, the antistatic metal wire layer 301 and the conductive fiber layer 302 are sewn together with the conductive yarn 303, the static grounding wire 304 is connected to the antistatic metal wire layer 301, and the static grounding wire 304 is wound on the reel 305, and the waterproof layer 401 is coated on the surface of the conductive fiber layer 302. After the waterproof layer 401 is dried, the fluoroethylene dispersion 404 is filled into the liquid storage capillary 403, and the fluoroethylene dispersion 404 is squeezed with a heating clamp to form a plurality of closed spaces, and the liquid storage capillary 403 is placed on the surface of the waterproof layer 401 and coated with the liquid storage capillary 403. The formed waterproof polyester needle felt is cut into dust removal bags and other items for use. When in use, the static grounding wire 304 is grounded to prevent static electricity. When the liquid storage capillary 403 is damaged, the fluoroethylene dispersion 404 leaks and is repaired to increase the service life.
[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A film-coated waterproof polyester needle-punched felt, comprising: An elastic base layer (1), a needle felt body (2), an antistatic mechanism (3) and a waterproof mechanism (4), characterized in that; A needle-punched felt body (2) is connected above the elastic base layer (1), an antistatic mechanism (3) is connected above the needle-punched felt body (2), and a waterproof mechanism (4) is connected above the antistatic mechanism (3).
2. The film-coated waterproof polyester needle felt according to claim 1, characterized in that: The waterproof mechanism (4) comprises: a waterproof layer (401), a coating layer (402), a liquid storage capillary (403) and a fluoroethylene dispersion (404), and the waterproof layer (401) is pasted on the top of the antistatic mechanism (3).
3. The film-coated waterproof polyester needle-punched felt according to claim 2, characterized in that: A coating layer (402) is pasted on the waterproof layer (401).
4. The film-coated waterproof polyester needle-punched felt according to claim 3, characterized in that: A liquid storage capillary (403) is provided in the coating layer (402), and the interior of the liquid storage capillary (403) is filled with fluoroethylene dispersion (404).
5. The film-coated waterproof polyester needle felt according to claim 2, characterized in that: The antistatic mechanism (3) comprises: an antistatic metal wire layer (301), a conductive fiber layer (302), a conductive yarn (303), an electrostatic grounding wire (304) and a reel (305); the upper surface of the needle felt body (2) is connected to the antistatic metal wire layer (301).
6. The film-coated waterproof polyester needle felt according to claim 5, characterized in that: The upper surface of the antistatic metal wire layer (301) is connected to a conductive fiber layer (302), and the waterproof layer (401) is connected to the upper surface of the conductive fiber layer (302).
7. The film-coated waterproof polyester needle-punched felt according to claim 6, characterized in that: The elastic base layer (1), the needle-punched felt body (2), the antistatic metal wire layer (301) and the conductive fiber layer (302) are all connected and penetrated by conductive yarns (303).
8. The film-coated waterproof polyester needle felt according to claim 5, characterized in that: One side of the anti-static metal wire layer (301) is connected to an electrostatic grounding wire (304).
9. The film-coated waterproof polyester needle felt according to claim 8, characterized in that: A reel (305) is provided on one side of the antistatic metal wire layer (301), and the static grounding wire (304) is wound on the reel (305).
10. The film-coated waterproof polyester needle felt according to claim 9, characterized in that: The antistatic metal wire layer (301), the conductive fiber layer (302), the static grounding wire (304) and the reel (305) are symmetrically arranged in two groups about the central axis of the elastic base layer (1).