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CN-121845459-A - Recyclable filter element waterproof dust collecting bag and preparation method thereof

CN121845459ACN 121845459 ACN121845459 ACN 121845459ACN-121845459-A

Abstract

The application relates to the field of dust collecting bags of dust collectors, in particular to a recyclable filter element waterproof dust collecting bag and a preparation method thereof, comprising a main body plastic part for air with dust and sundries to enter, a bag body detachably connected with the main body plastic part, a HEPA filter element connected with the main body plastic part and used for intercepting the dust and sundries in the bag body, and a support framework arranged at the periphery of the HEPA filter element and fixedly connected with peaks at folds of the HEPA filter element, the surface of the HEPA filter element is provided with a hydrophobic antibacterial coating formed by combining PTFE micro-nano particles, nano silver ions and a water-based silane coupling agent, so that the recycling times of the dust collecting bag are effectively improved.

Inventors

  • DAI YUNDIE
  • CHEN DONG
  • WU SHAOQING
  • ZHU LIANG

Assignees

  • 嘉兴市小田科技有限公司
  • 嘉兴市小田科技有限公司

Dates

Publication Date
20260414
Application Date
20260131
Priority Date
20260131

Claims (10)

  1. 1. A recyclable filter element waterproof dust collecting bag is characterized by comprising a main body plastic part (1) for air with dust and sundries to enter, a bag body (2) detachably connected with the main body plastic part (1), a HEPA filter element (3) connected with the main body plastic part (1) and used for intercepting the dust and sundries in the bag body (2), and a supporting framework (4) arranged on the periphery of the HEPA filter element (3) and fixedly connected with peaks at folds of the HEPA filter element (3), wherein a hydrophobic antibacterial coating formed by combining PTFE micro-nano particles, nano silver ions and a water-based silane coupling agent is arranged on the surface of the HEPA filter element (3).
  2. 2. The recyclable filter element waterproof dust bag as set forth in claim 1, wherein the supporting framework (4) is made of memory alloy wires with diameters of 0.08-0.1mm, the supporting framework (4) comprises a plurality of cross bars (41) arranged along the length direction of peaks at folds of the sea paper filter element (3), a longitudinal bar (42) fixedly connected between two adjacent cross bars (41), end bars (43) formed at the ends of the cross bars (41) and the longitudinal bars (42) and fixed with sealing frames of the sea paper filter element (3), and the cross bars (41) are fixedly connected with the peaks at the folds of the sea paper filter element (3).
  3. 3. The recyclable filter element waterproof dust bag of claim 1, wherein the mass ratio of PTFE micro-nano particles, nano silver ions, a water-based silane coupling agent and deionized water in the hydrophobic antibacterial coating is 8:1:3:88.
  4. 4. The recyclable filter element waterproof dust bag of claim 3, wherein the particle size of the PTFE micro-nano particles is 50-100nm, and the particle size of the nano silver ions is 2-5nm.
  5. 5. A method for preparing a recyclable filter element waterproof dust bag, which is characterized in that the recyclable filter element waterproof dust bag is manufactured according to any one of claims 1-4, and is characterized in that: the method specifically comprises the following steps: s1, prefabricating and forming a supporting framework (4), and preparing a hydrophobic antibacterial coating liquid for later use; s2, spraying the hydrophobic antibacterial coating liquid on the front side and the back side of the fold to be formed of the HEPA filter paper, and drying; S3, forming folds of the HEPA filter paper, putting the supporting framework (4) corresponding to the sealing frame into the sealing frame, and dispensing and fixing the end rod (43); s4, placing the formed folded HEPA filter paper into a sealing frame, dispensing and fixing the HEPA filter paper and the supporting framework (4), and fixing the HEPA filter paper and the sealing frame to obtain a HEPA filter element (3); s5, manufacturing and molding the main body plastic part (1) and the bag body (2) and assembling the main body plastic part and the bag body with the HEPA filter element (3).
  6. 6. The method for preparing the recyclable filter element waterproof dust bag, as set forth in claim 5, is characterized in that the S1 supporting framework (4) is subjected to initial molding, heat preservation at 80 ℃ for 10min, and natural cooling and elasticity test.
  7. 7. The method for preparing the recyclable filter element waterproof dust bag as set forth in claim 5, wherein S2 comprises placing the HEPA filter paper in a spray chamber, vacuumizing to-0.08 MPa, spraying the hydrophobic antibacterial coating liquid at 0.1MPa, heating the spray chamber to 45 ℃, and air-drying for 20min to form the hydrophobic antibacterial coating with a thickness of 0.5-1 μm.
  8. 8. The method for preparing the recyclable filter element waterproof dust bag according to claim 5, wherein the step S5 is characterized in that PTFE hydrophobic coating with the thickness of 0.3-0.5 μm is sprayed on the surface of the bag body (2), and the PTFE hydrophobic coating is air-dried for 10min at 45 ℃.
  9. 9. The method for preparing the recyclable filter element waterproof dust bag, as set forth in claim 5, wherein the main plastic part (1) in S5 is made of PP material through drying at 80 ℃ for 2 hours and then injection molding, the temperature of an injection molding charging barrel is 180-220 ℃, the temperature of a mold is 40-60 ℃, and the injection pressure is 80-100MPa.
  10. 10. The method for preparing the recyclable filter element waterproof dust bag according to claim 5, wherein the bag body (2) is made of any one or more of OPP, CPE and PE, the bag body (2) is formed by heat-sealing films, the heat-sealing temperature is 130 ℃, the pressure is 0.3MPa, and the heat-sealing width is 5mm.

Description

Recyclable filter element waterproof dust collecting bag and preparation method thereof Technical Field The application relates to the field of dust collection bags of dust collectors, in particular to a recyclable filter element waterproof dust collection bag and a preparation method thereof. Background The problems of resource waste and environmental pollution caused by disposable consumer products are increasingly remarkable, for example, the conventional dust collecting bags are mostly designed at one time, and the disposable dust collecting bags are discarded integrally after being used, so that excessive consumption of materials such as the HEPA filter paper and plastic is caused, and the solid waste treatment pressure is increased. From the aspect of user requirements, on one hand, the dry and wet dual-purpose requirements of dust collecting bags in the scenes of home, automobile cosmetology, small-sized sites and the like are normalized, the dust collecting bags are required to effectively intercept dust and safely store accumulated water, and the performance is not attenuated when the dust collecting bags are repeatedly used, and on the other hand, users expect to reduce the long-term use cost through the recyclable design, so that the trouble and the expenditure of frequently replacing disposable dust collecting bags are avoided. A waterproof dust bag of a HEPA filter element type with the publication number of CN222444006U adopts a plastic bag body made of OPP/CPE/PE material to replace the traditional non-woven fabric bag body, and the waterproof dust bag is matched with a HEPA filter paper filter element, so that the problems of poor waterproof property and filtration failure of the traditional non-woven fabric dust bag after being wet are solved. However, most of the waterproof dust bag filter cores are of a non-supporting fold structure, collapse and deformation are easy to occur after repeated cleaning, the attenuation of the filtering area is serious, the recycling frequency is low, mud residues on the surfaces of the filter cores are difficult to thoroughly clean, bacteria are easy to breed and peculiar smell is generated in a humid environment, and the dust bag cannot be used continuously after repeated water cleaning due to multiple factors. Disclosure of Invention In order to effectively improve the recycling times of the dust collecting bag, the application provides a recyclable filter element waterproof dust collecting bag and a preparation method thereof. In a first aspect, the application provides a filter element waterproof dust bag capable of being recycled, which adopts the following technical scheme. The utility model provides a but waterproof dust bag of filter core of cyclic utilization, includes that the main part that supplies the air that has dust debris to get into moulds the piece, can dismantle the bag body of connecting in the main part mould the piece, connect in the main part mould the piece and with dust debris interception in the internal HEPA filter core of bag, locate the support frame of HEPA filter core periphery and carry out fixed connection with between the peak of HEPA filter core fold department, the HEPA filter core surface is equipped with the hydrophobic antibiotic coating that is formed by PTFE micro-nano particle, nano silver ion and waterborne silane coupling agent combination. By adopting the technical scheme, the supporting framework is fixedly connected with the peaks at the folds of the HEPA filter element to form a three-dimensional supporting structure, so that external force impact in the repeated cleaning and dismounting processes is effectively resisted, fold collapse and deformation are avoided, the recycling frequency of the filter element is increased, and the attenuation of the filtering area is reduced; The hydrophobic antibacterial coating enables the contact angle of the surface of the filter element to be larger, the adhesive force of mud-like residues to be reduced, the filter element can be quickly removed after being washed by clean water, and the antibacterial rate of nano silver ions is higher, so that the problems of bacterial breeding and peculiar smell in a humid environment are solved; Meanwhile, the supporting framework is only fixed at the crest of the fold, the filtering surface of the filter element is not shielded, the thickness of the hydrophobic antibacterial coating is thinner, and the micro-nano grade particle size raw material is adopted, so that micropores of the HEPA filter paper cannot be blocked, the filtering precision is ensured to maintain the H13 grade, and the ventilation quantity is not easy to excessively drop. Optionally, the supporting framework is made of memory alloy wires with the diameter of 0.08-0.1mm, and comprises a plurality of cross bars arranged along the length direction of peaks at folds of the HEPA filter element, a longitudinal bar fixedly connected between two adjacent cross bars, and an