A circulating air duct for a new type of aging-resistant polyvinyl chloride wall covering film
By designing a circulating air duct structure and using a fan and filter system to remove the pungent odor of printing ink during the production of PVC wallcovering film, the problem of deteriorating working environment for workers was solved, and the air purification effect in the factory was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN TIANJIN PLASTICS
- Filing Date
- 2025-02-12
- Publication Date
- 2026-05-26
AI Technical Summary
During the production of PVC wallcovering film, the pungent odor emitted from the printing ink deteriorates the working environment for operators.
Design a circulating air duct, including the duct body, exhaust port, fan and filter. The exhaust port draws in the gas volatilized from printing ink, and the fan uses suction to guide the gas into the filter for filtration. In particular, an activated carbon filter is used to remove odors. The exhaust port is designed to be larger than the sum of the exhaust ports to maintain a negative pressure state and ensure effective extraction and filtration.
It effectively removes the pungent odor from the volatile inks emitted from the surface of PVC wall coverings, improving the working environment for workers and enhancing production safety and comfort.
Smart Images
Figure CN224272634U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of polyvinyl chloride wallcovering production technology, specifically to a circulating air duct for a new type of aging-resistant polyvinyl chloride wallcovering. Background Technology
[0002] Polyvinyl chloride (PVC) wall film is made from PVC resin and other modifiers through calendering or blow molding processes. It typically has a thickness of 0.08-0.2 mm; films thicker than 0.25 mm are called PVC sheets. Plasticizers, stabilizers, lubricants, and other functional processing aids are added to PVC resin, which is then calendered into a film.
[0003] During the production of PVC wallcovering film, printing ink is applied to its surface to improve its appearance. This ink, composed of pigments, anhydrous ethanol, and diluents, has an odor. It provides various colors to meet different user needs. Furthermore, printing ink enhances the film's hiding power, making it more uniform and smooth, thus improving the overall decorative effect. However, printing ink often emits pungent odors, creating a poor working environment for operators. Therefore, it is necessary to address the odor emitted by the printing ink. Utility Model Content
[0004] In view of the defects existing in the prior art, the purpose of this utility model is to provide a circulating air duct for a new type of aging-resistant polyvinyl chloride wallcovering film, so as to solve the problem that the pungent odor from the printing ink on the surface of the existing polyvinyl chloride wallcovering film during the production process deteriorates the working environment for operators.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] This application provides a circulating air duct for a novel aging-resistant polyvinyl chloride (PVC) wallcovering film, characterized in that it includes an air duct body, multiple exhaust ports, a fan, and a filter. One end of the air duct body is a closed seal structure, and the other end of the air duct body forms an exhaust port. Multiple exhaust ports are installed at intervals along the length of the air duct body, and one end of each exhaust port is connected to the inner cavity of the air duct body. The filter is installed in the inner cavity of the air duct body near the exhaust port and is used to filter and absorb the odor of printing ink on the surface of the PVC wallcovering film. The fan is installed in the inner cavity of the air duct body and is used to generate suction to draw in the odor of the volatile printing ink on the surface of the PVC wallcovering film.
[0007] Furthermore, the fan is installed in the inner cavity of the air duct body at a position between the exhaust port and the filter.
[0008] Furthermore, the opening size of the exhaust vent is larger than the sum of the opening sizes of the plurality of exhaust vents.
[0009] Furthermore, a protective net is installed at the air inlet of the exhaust vent.
[0010] Furthermore, the filter is an activated carbon filter.
[0011] The beneficial effects of this utility model are as follows:
[0012] 1. Through the above-mentioned circulating air duct structure, multiple exhaust ports are set on the air duct body. Each exhaust port can extract and absorb the air from the printing ink area on the surface of the PVC wallcovering film in a specific area. The extracted air is filtered by the fan and passes through the filter in the inner cavity of the air duct body to remove the pungent odor mixed in the air. The filtered air is discharged from the exhaust port. In this way, the pungent odor emitted by the printing ink on the surface of the PVC wallcovering film can be extracted and filtered in time to improve the working environment of the workers.
[0013] 2. By making the opening size of the exhaust vent larger than the sum of the opening sizes of all the exhaust vents, the air volume is greater than the air volume. This creates a negative pressure state inside the duct body, which can better extract air from the printed ink area on the surface of the PVC wallcovering film. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of the circulating air duct for the novel aging-resistant polyvinyl chloride wall covering film in the embodiments of this application.
[0015] Figure 2 This is a three-dimensional structural diagram of the circulating air duct for the novel aging-resistant polyvinyl chloride wall covering film in an embodiment of this application, viewed from another angle.
[0016] Figure 3 This is a schematic diagram of the filter installed on the air duct body in an embodiment of this application.
[0017] Figure 4 for Figure 1 A magnified schematic diagram of the structure at point A in the diagram.
[0018] Figure 5 for Figure 2 A magnified schematic diagram of the structure at point B in the diagram.
[0019] In the picture:
[0020] 10-Circulating air duct, 100-Air duct body, 101-Exhaust vent, 200-Exhaust outlet, 201-Protective net, 300-Filter, 400-Fan. Detailed Implementation
[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0022] See appendix Figure 1 To be continued Figure 3 As shown, this embodiment provides a circulating air duct 10 for a novel aging-resistant polyvinyl chloride wall covering film, including an air duct body 100, multiple exhaust ports 200, a fan 400, and a filter 300.
[0023] See attached document Figure 1 and attached Figure 2 As shown, the air duct body 100 has a rectangular cross-section and a cavity. One end of the air duct body 100 is a closed sealing structure, and the other end is an open structure, that is, an exhaust port 101 is formed at the other end.
[0024] Multiple exhaust vents 200 are installed at the bottom of the air duct body 100. The multiple exhaust vents 200 are arranged at intervals along the length of the air duct body 100. One end of the exhaust vent 200 is connected to the inner cavity of the air duct body 100, and the other end of the exhaust vent 200 can extend to the vicinity of the printing ink area on the surface of the polyvinyl chloride wallcovering film. In this way, the exhaust vent 200 can extract the air in the area where the printing ink is located on the surface of the polyvinyl chloride wallcovering film, that is, mainly extract the pungent odor emitted by the printing ink on the surface of the polyvinyl chloride wallcovering film.
[0025] See attached document Figure 1 and attached Figure 4 As shown, in order to prevent foreign objects from entering the inner cavity of the air duct body 100, a protective net 201 is installed at the port of the exhaust port 200.
[0026] See attached document Figure 1 and attached Figure 3 As shown, the filter 300 is installed inside the duct body 100 and near the exhaust port 101. This allows air drawn in through the exhaust port 200 to be concentrated at the filter 300 for filtration. In this embodiment, the filter 300 removes pungent gases emitted from the printing ink on the surface of the PVC wallcovering film carried in the air, thereby improving the working environment for operators. For example, in some embodiments, the filter 300 is an activated carbon filter 300. Of course, other filters 300 capable of filtering and absorbing the pungent odor emitted from the printing ink on the surface of the PVC wallcovering film can also be used, without limitation.
[0027] See attached document Figure 2 and attached Figure 5 As shown, the fan 400 is installed inside the duct body 100, positioned between the filter 300 and the exhaust port 101. This ensures that only air filtered by the filter 300 comes into contact with the fan 400, preventing pungent gases from corroding the fan 400 and extending its service life. When the fan 400 rotates, it generates suction within the duct body 100, which in turn generates suction at the exhaust port 200, which is connected to the duct body 100, drawing air from the printed ink area on the surface of the PVC wallcovering film.
[0028] In order to better extract air from the printed ink area on the surface of the PVC wallcovering film, in this embodiment, the opening size of the exhaust port 101 is larger than the sum of the opening sizes of the multiple exhaust ports 200, and the air volume is greater than the air volume. This makes the inner cavity of the air duct body 100 a negative pressure environment, thereby better extracting air from the printed ink area on the surface of the PVC wallcovering film.
[0029] In this embodiment, the circulating air duct structure described above utilizes multiple exhaust ports 200 provided on the air duct body 100. Each exhaust port 200 can individually extract and absorb air from the area of printed ink on the surface of the PVC wallcovering film. Under the suction force of the fan 400, the extracted air passes through the filter 300 along the inner cavity of the air duct body 100 for filtration, removing and absorbing the pungent odor mixed in the air. The filtered air is discharged outward from the exhaust port 101. In this way, the pungent odor emitted by the printed ink on the surface of the PVC wallcovering film can be extracted and filtered in a timely manner, thereby improving the working environment for workers.
[0030] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.
Claims
1. A circulating air duct for a novel aging-resistant polyvinyl chloride wallcovering film, characterized in that, The device includes a duct body, multiple exhaust vents, a fan, and a filter. One end of the duct body is a closed seal, and the other end forms an exhaust vent. Multiple exhaust vents are installed at intervals along the length of the duct body, and one end of each exhaust vent is connected to the inner cavity of the duct body. The filter is installed in the inner cavity of the duct body near the exhaust vent and is used to filter and absorb the odor emitted by the printing ink on the surface of the PVC wallcovering film. The fan is installed in the inner cavity of the duct body and is used to generate suction to draw in the odor emitted by the printing ink on the surface of the PVC wallcovering film.
2. The circulating air duct for a novel aging-resistant polyvinyl chloride wall covering film according to claim 1, characterized in that, The fan is installed inside the duct body at a position between the exhaust port and the filter.
3. A circulating air duct for a novel aging-resistant polyvinyl chloride wall covering film according to claim 1 or 2, characterized in that, The opening size of the exhaust vent is greater than the sum of the opening sizes of the multiple exhaust vents.
4. A circulating air duct for a novel aging-resistant polyvinyl chloride wall covering film according to claim 1, characterized in that, A protective net is installed at the air inlet of the exhaust vent.
5. A circulating air duct for a novel aging-resistant polyvinyl chloride wall covering film according to claim 1, characterized in that, The filter is an activated carbon filter.