Novel WPC fast-assembly aluminum-wood door

By combining graphite homogeneous board, wood strips and metal side sealing, the warping and deformation of WPC door panels and the insufficient performance of door frames are solved, providing a new type of WPC quick-install aluminum-wood door that is moisture-proof, corrosion-proof, soundproof and heat-insulating, improving stability and environmental protection, and reducing production costs.

CN122446977APending Publication Date: 2026-07-24HEBEI PABO INTELLIGENT DOORS & WINDOW TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HEBEI PABO INTELLIGENT DOORS & WINDOW TECHNOLOGY CO LTD
Filing Date
2026-06-12
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Traditional WPC door panel production is difficult to control the flatness precisely, making it prone to warping and deformation. The production process is cumbersome, and the door frame has poor fire and water resistance.

Method used

The door panel is made of graphite homogeneous board and wood, combined with metal side edging and WPC panel, integrating magnetic attraction and edge sealing functions. The door frame design is suitable for both inward and outward opening methods, and aluminum material is used to improve stability and sealing.

Benefits of technology

It achieves excellent moisture and corrosion resistance, sound and heat insulation performance, is environmentally friendly and cost-effective, simplifies the production process, improves the stability and service life of the door panel, and enhances the versatility and adaptability of the door panel.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application belongs to the technical field of door and window edge sealing, and particularly relates to a novel WPC fast-assembly aluminum-wood door, which comprises a door plate and metal material side edge seals arranged on left and right ends of the door plate, the door plate comprises a graphite homogeneous plate arranged in the middle and a batten fixedly arranged on left and right ends of the graphite homogeneous plate, WPC material face plates are fixedly arranged on inner and outer sides of the graphite homogeneous plate and the batten, two corner slots penetrating through up and down are arranged at two corner positions of the outer side of the door plate, the side edge seals comprise a first side edge seal, a second side edge seal and a third side edge seal connected in sequence, the first side edge seal and the third side edge seal are arranged along the thickness direction of the door plate and are staggered in left and right directions and inner and outer directions, the second side edge seal is arranged in the corner slot in an inclined manner, and the second side edge seal and the corner slot are provided with a second magnetic attraction element which is attracted to a first magnetic attraction element on a door sleeve. The novel WPC fast-assembly aluminum-wood door has the advantages of strong moisture-proof and corrosion-proof performance, stability, no deformation, good sound insulation and heat insulation effects, environmental protection and high cost performance.
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Description

Technical Field

[0001] This invention relates to the field of door and window technology, specifically to a novel WPC quick-install aluminum-wood door. Background Technology

[0002] With the rapid development of the home building materials industry, WPC doors, with their significant advantages such as being environmentally friendly and formaldehyde-free, structurally stable, moisture-proof and insect-proof, have gradually replaced traditional solid wood doors and composite doors, becoming the mainstream product in the interior door market.

[0003] However, traditional WPC door panels are produced using an extrusion molding process. The flatness of extruded door panels is difficult to control precisely, easily leading to warping and deformation, resulting in an uneven appearance that affects installation accuracy and aesthetics. Furthermore, the production process is cumbersome and time-consuming. In addition, the door frames used with WPC door panels are often made of solid wood or MDF, which have poor fire and water resistance.

[0004] Therefore, it is necessary to develop a new type of WPC quick-install aluminum-wood door that is moisture-proof and corrosion-resistant, stable and non-deformable, has good sound and heat insulation effects, is environmentally friendly, and has a high cost performance. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a new type of WPC quick-install aluminum-wood door that is moisture-proof and corrosion-resistant, stable and non-deformable, has good sound and heat insulation effects, is environmentally friendly and cost-effective.

[0006] To solve the above problems, the technical solution adopted by the present invention is as follows: A new type of WPC quick-install aluminum-wood door includes a door panel and metal side sealing edges fastened to the left and right ends of the door panel. The door panel includes a graphite homogeneous plate in the middle and wooden blocks fixed at its left and right ends. WPC material panels are fixed on both the inner and outer sides of the graphite homogeneous plate and the wooden blocks. Rectangular corner grooves that run vertically through the two outer corners of the door panel are provided. The side sealing edge includes a first side sealing edge, a second side sealing edge and a third side sealing edge connected together in sequence. The first side sealing edge and the third side sealing edge are arranged along the thickness direction of the door panel and are staggered in both the left and right and the inside and outside directions. The second side sealing edge is inclinedly arranged at the corner groove. A second magnetic element is provided between the second side sealing edge and the corner groove, which attracts the first magnetic element on the door frame.

[0007] As one embodiment of the present invention, an exhaust groove is provided on the outer side of the second side seal along the vertical direction, and a reinforcing plate is provided on the inner side of the second side seal along the length direction. A hollow magnet receiving cavity for placing the second magnetic component is formed between the reinforcing plate and the second side seal. The free ends of the first and third side sealing edges are provided with inner and outer clips that are fastened to the panel.

[0008] In one embodiment of the present invention, the reinforcing plate has a positioning surface parallel to the inner card plate on the side near the inner card plate; after the side sealing edge is fastened to the door panel, the inner card plate, the outer card plate, the first side sealing edge, the third side sealing edge and the positioning surface are all adapted to the outer surface of the door panel.

[0009] In one embodiment of the present invention, adhesive grooves are uniformly provided on the inner side of the first side sealing edge and / or the third side sealing edge.

[0010] In one embodiment of the present invention, the door panel is used in conjunction with the door frame, and the door frame is provided with a door frame adhesive strip corresponding to the second side sealing edge. When the door panel is closed, the second side sealing edge is in contact with the inclined bonding surface on the door frame adhesive strip; the first magnetic member is embedded in the door frame adhesive strip. Multiple venting grooves are provided, located on the second side sealing edge at positions corresponding to the bonding surface.

[0011] In one embodiment of the present invention, the door frame includes a main frame, a sub-frame, and a door panel connecting the two. The main frame has a protruding door stop along the vertical direction to limit the door panel. The door frame rubber strip is slidably engaged inside the door stop. The side seal, the main frame, and the sub-frame are all made of aluminum. The door panel and the front panel are both made of WPC material.

[0012] In one embodiment of the present invention, the door frame is equipped with two specifications. When the main frame of the door frame is located on the outer side and the sub-frame of the door frame is located on the inner side, the door stop is located at the outer end of the main frame of the door frame, and after the door panel contacts the door stop, the outer side of the door panel is flush with the outer side of the door frame. When the main frame of the door frame is located on the inner side and the sub-frame of the door frame is located on the outer side, the door stop is located at the inner end of the main frame of the door frame, and after the door panel contacts the door stop, the inner side of the door panel is flush with the inner side of the door frame.

[0013] As one embodiment of the present invention, the lengths and included angles of the first side sealing edge, the second side sealing edge and the third side sealing edge are reasonably set so that when the door panel is used for two specifications of door frame, the sealing performance is good after closing, and the interference between the side sealing edge and the door frame is prevented when the door panel is opened.

[0014] In one embodiment of the present invention, the panel, the graphite homogeneous board, the wooden block and the side sealing edge are bonded together; the main frame of the door frame, the sub-frame of the door frame and the door frame panel are bonded together.

[0015] In one embodiment of the present invention, the door panel and the side sealing edge are entirely covered with a decorative layer.

[0016] The beneficial effects of adopting the above technical solution are as follows: This invention provides a novel WPC quick-install aluminum-wood door. The side panels are made of WPC substrate, which is non-absorbent and mildew-resistant. The aluminum side sealing is weather-resistant and corrosion-resistant, making it suitable for humid environments and environments with large temperature differences. It solves the problems of traditional wooden doors, such as easy deformation, mold, and cracking, and has strong moisture-proof and corrosion-resistant performance. The door panel consists of an outer panel and an inner graphite homogeneous board and wood, reinforced with side sealing for rigid support. It is not prone to warping or cracking over long-term use, and its flatness and service life far exceed those of wooden doors. The porous structure of the WPC board and the sealed design of the aluminum side sealing effectively block the transmission of noise and heat, greatly improving fire resistance and sound insulation. WPC material releases no formaldehyde, meeting environmental standards. It is lower in cost than all-aluminum doors and more durable than solid wood doors, combining environmental friendliness and economy.

[0017] In practical applications, the door panel and frame structures and manufacturing processes for aluminum-wood doors differ between the inward-opening and outward-opening types. Door panels and frames are not interchangeable, and simply adjusting the frame structure cannot achieve the same door panel structure for both installation methods. However, the novel WPC quick-install aluminum-wood door of this invention, by installing side sealing edges at the left and right ends of the door panel to cooperate with the frame, achieves structural consistency for both inward-opening and outward-opening aluminum-wood doors. This improves the versatility and adaptability of aluminum-wood door products, while simplifying production processes and management, effectively reducing inventory pressure and production costs.

[0018] Traditional door panels require grooves to be cut when installing soundproofing strips and magnetic components, which damages the overall structure of the door panel and reduces its strength and stability. This is especially true for engineered wood products such as MDF and particleboard, where grooving can easily lead to cracking and chipping at the edges. However, the novel WPC quick-install aluminum-wood door of this invention eliminates the need for grooving. Soundproofing and magnetic attraction are achieved through the cooperation of the second side sealing and the second magnetic component in the side sealing, along with the door frame adhesive strip and the first magnetic component on the door frame. This integrates the edge sealing and magnetic attraction functions into one unit, completely avoiding the damage to the door panel structure caused by grooving and effectively improving the strength and lifespan of the door panel. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the door panel and side sealing edge in this invention.

[0020] Figure 2 This is a schematic diagram of the left-view structure of the side sealing edge in this invention.

[0021] Figure 3 This is a schematic diagram of the right-view structure of the side sealing edge in this invention.

[0022] Figure 4 This is a top view of the door panel in this invention when it is flat on the outside and opens inward.

[0023] Figure 5 yes Figure 4 A magnified view of a portion of point A in the middle.

[0024] Figure 6 This is a top view of the door panel in this invention when it is flat and opens inward.

[0025] Figure 7 yes Figure 6 A magnified view of a portion of point B in the middle.

[0026] The components are as follows: 1. Main frame of door frame; 2. Sub-frame of door frame; 3. Door frame panel; 4. Door stop; 5. Slot; 6. Leaving slot; 7. Door frame adhesive strip; 8. Slot; 9. Adhesive surface; 10. First magnetic suction component; 11. First side edge seal; 12. Second side edge seal; 13. Third side edge seal; 14. Inner panel; 15. Outer panel; 16. Vent groove; 17. Reinforcing plate; 1701. Positioning surface; 18. Magnet receiving cavity; 19. Adhesive groove; 20. Second magnetic suction component; 21. Door panel; 2101. Panel; 2102. Graphite homogeneous board; 2103. Timber; 22. First cut surface; 23. Second cut surface; 24. Door opening; 25. Corner groove; 26. Hinge. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the present invention clearer, the invention will be described clearly and completely below in conjunction with specific embodiments.

[0028] like Figures 1-3 The illustration shows a novel WPC quick-install aluminum-wood door, comprising a door panel 21 and symmetrical metal side sealing edges fastened to the left and right ends of the door panel 21. The door panel 21 includes a graphite homogeneous plate 2102 located in the middle and wooden strips 2103 fixed at its left and right ends. WPC panels 2101 are fixed on both the inner and outer sides of the graphite homogeneous plate 2102 and the wooden strips 2103. Rectangular corner grooves 25 are formed at the two outer corners of the door panel 21, which are specifically formed on the panels 2101 and the wooden strips 2103. The two side walls of the corner grooves 25 are defined as a first cut surface 22 and a second cut surface 23, respectively. The side sealing edge includes a first side sealing edge 11, a second side sealing edge 12, and a third side sealing edge 13 connected together in sequence. The first side sealing edge 11 and the third side sealing edge 13 are arranged along the thickness direction of the door panel 21 and are staggered in both the left-right and inward-outward directions. The second side sealing edge 12 is inclinedly arranged at the corner groove 25. That is, the parallel first side sealing edge 11 and the third side sealing edge 13 are fixed together by the inclined second side sealing edge 12. The side sealing edge is integrally formed by pressing metal material. like Figures 4-7 As shown, a second magnetic member 20 is provided between the second side sealing edge 12 and the corner groove 25, which attracts the first magnetic member 10 on the door frame.

[0029] In this invention, an exhaust groove 16 is provided on the outer side of the second side sealing edge 12 along the vertical direction, and a reinforcing plate 17 is provided on the inner side of the second side sealing edge 12 along the length direction. A hollow magnet receiving cavity 18 for placing the second magnetic suction member 20 is formed between the reinforcing plate 17 and the second side sealing edge 12. The free ends of the first side sealing edge 11 and the third side sealing edge 13 are provided with an inner clamping plate 14 and an outer clamping plate 15 that are fastened to the side of the panel 2101. The spacing between the inner clamping plate 14 and the outer clamping plate 15 is adapted to the thickness of the door panel 21.

[0030] In this embodiment, the reinforcing plate 17 has a positioning surface 1701 parallel to the inner retaining plate 14 on the side near the inner retaining plate 14. After the side sealing edge is fastened onto the door panel 21, the inner retaining plate 14, outer retaining plate 15, first side sealing edge 11, third side sealing edge 13, and positioning surface 1701 are all adapted to the outer surface of the door panel 21. Specifically, the interval between the positioning surface 1701 and the inner retaining plate 14 is adapted to the distance between the inner side surface of the door panel 21 and the first cut surface 22; the distance between the inner side of the first side sealing edge 11 and the inner side of the third side sealing edge 13 is adapted to the distance between the same side end face and the second cut surface 23 of the door panel 21. By setting the positioning surface 1701, the corner groove cut surface, and each distance, the side sealing edge can be firmly bonded to the door panel 21 under the action of adhesive.

[0031] The first side sealing edge 11 and / or the third side sealing edge 13 are uniformly provided with glue application grooves 19 to increase the bonding area of ​​the side sealing edges and make the side sealing edges adhere more firmly. Multiple glue application grooves 19 are uniformly arranged along the inside and outside direction of the door frame, and they are arranged to run vertically along the first side sealing edge 11 and / or the third side sealing edge 13. In this embodiment, the glue application grooves 19 are only provided on the first side sealing edge 11, which has a larger area. Figure 5 and Figure 7 As shown, there is a gap between the reinforcing plate 17 and the side wall of the corner groove 25. The gap is used to apply adhesive so that the inner exposed part of the reinforcing plate 17 and the second side sealing edge 12 can be bonded to the side wall of the corner groove through the adhesive.

[0032] In this embodiment, the main frame 1 and the secondary frame 2 of the door frame are bonded to the door frame panel 3 via U-shaped grooves, and an adhesive groove 19 is provided on the inner wall of the U-shaped grooves. The panel 2101, the graphite homogeneous board 2102, the wooden strip 2103, and the side sealing are bonded together; the main frame 1, the secondary frame 2, and the door frame panel 3 are bonded together. The new WPC quick-install aluminum-wood door has a simple production process, flexible installation, and can adapt to various door panel styles both domestically and internationally.

[0033] like Figure 4 and Figure 6As shown, the inner and outer markings refer to the bedroom and living room, respectively. The door panel 21 is used in conjunction with the door frame fixed to the door opening 24. The door frame is provided with a door frame adhesive strip 7 corresponding to the second side sealing edge 12. The left or right side of the door panel 21 is hinged to the door frame via a hinge 26. When the door panel 21 is closed, the second side sealing edge 12 and the inclined contact surface 9 on the door frame adhesive strip 7 are just in contact. The first magnetic suction member 10 is embedded in the door frame adhesive strip 7. When the door panel is closed, the door panel 21 and the door frame are attracted together by the first magnetic suction member 10 and the second magnetic suction member 20.

[0034] The first magnetic attractor 10 and the second magnetic attractor 20 are respectively a magnetic strip and a magnetic conductive sheet, or both are magnetic strips. In one embodiment, the first magnetic attractor 10 is a modified PVC magnetic strip embedded in the door frame adhesive strip 7. The door frame adhesive strip 7 has a through-groove along the vertical direction near the bonding surface 9, and the modified PVC magnetic strip, i.e., a flexible magnetic strip formed by extruding a mixture of ferrite magnetic powder and a PVC polymer matrix, is embedded in the groove. The second magnetic attractor 20 is a barium powder magnetic strip. Since the first magnetic attractor 10 is embedded in the door frame adhesive strip 7 and the second magnetic attractor 20 is located in the magnet receiving cavity 18, both contain magnetism, resulting in strong magnetic force and a more secure attraction. The door frame adhesive strip 7 and the flexible first magnetic attractor 10 work together to buffer and reduce noise when the door is closed.

[0035] like Figure 2 and Figure 3 As shown, multiple exhaust channels 16 are provided, located on the second side sealing edge 12 at positions corresponding to the bonding surface 9. The exhaust channels 16 serve two purposes: firstly, to exhaust air and prevent negative pressure from forming between the second side sealing edge 12 and the door frame rubber strip 7, making it difficult to open the door; secondly, the exhaust channels 16 form an air cavity, blocking sound transmission and improving sound insulation.

[0036] The door frame includes a main frame 1, a sub-frame 2, and a door frame plate 3 connecting the two. A protruding door stop 4 is provided on the main frame 1 along the vertical direction to limit the door plate 21. The door frame rubber strip 7 is slidably engaged inside the door stop 4. A clearance groove 6 is provided on the inner side of the door stop 4 along the vertical direction. The clearance groove 6 and the hollow inner cavity of the door stop 4 form a T-shaped slot 5. A T-shaped locking block 8 is integrally formed on the door frame rubber strip 7 and is engaged in the slot 5.

[0037] The side sealing edge, the main frame 1 of the door frame, and the sub-frame 2 of the door frame are all made of aluminum in one piece; the door frame panel 3 and the panel 2101 are both made of WPC material.

[0038] The lengths and included angles of the first side sealing edge 11, the second side sealing edge 12, and the third side sealing edge 13 are reasonably set so that when the door panel 21 is used for two types of door frames, the sealing performance is good after closing, and interference between the side sealing edges and the door frame is prevented when the door panel 21 is opened. In one embodiment, the door panel 21 is 53mm thick, the width of the sealing structure in both the inward and outward directions is 55mm, and the thickness of the retaining plate is 1mm; the included angle between the second side sealing edge 12 and the first side sealing edge 11 and the third side sealing edge 13 is 45°; the width of the first side sealing edge 11 in the front-to-back direction is 32mm, and the width of the third side sealing edge in the front-to-back direction is 13mm.

[0039] To enable the switching between outward-opening and inward-opening door panels 21, the door frame is equipped with two specifications, specification one: as shown in the image. Figure 4 As shown, when the main frame 1 of the door frame is on the outer side and the sub-frame 2 of the door frame is on the inner side, the door stop 4 is located at the outer end of the main frame 1 of the door frame. After the door panel 21 contacts the door stop 4, the outer side of the door panel 21 is flush with the outer side of the door frame; Specification 2: As shown Figure 6 As shown, when the main frame 1 of the door frame is located on the inner side and the secondary frame 2 of the door frame is located on the outer side, the door stop 4 is located in the middle of the main frame 1 of the door frame. After the door panel 21 contacts the door stop 4, the inner side of the door panel 21 is flush with the inner side of the door frame. With the above two specifications of door frames, the switching between the outer flat and inner opening / closing and the inner flat and inner opening structure can be achieved without changing the structure of the door panel 21.

[0040] As a further optimization, the door panel 21 and the side sealing edge are entirely wrapped with a decorative layer, specifically a wood grain coating film.

[0041] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A novel WPC quick-install aluminum-wood door, characterized in that: It includes a door panel (21) and metal side sealing edges fastened to the left and right ends of the door panel (21). The door panel (21) includes a graphite homogeneous plate (2102) located in the middle and wooden blocks (2103) fixed at its left and right ends. Both the inner and outer sides of the graphite homogeneous plate (2102) and the wooden blocks (2103) are fixed with WPC material panels (2101). Rectangular corner grooves (25) that run vertically through the two outer corners of the door panel (21) are provided. The side sealing edge includes a first side sealing edge (11), a second side sealing edge (12) and a third side sealing edge (13) connected together in sequence. The first side sealing edge (11) and the third side sealing edge (13) are arranged along the thickness direction of the door panel (21) and are staggered in the left and right and inside and outside directions. The second side sealing edge (12) is inclinedly arranged at the corner groove (25). A second magnetic element (20) is provided between the second side sealing edge (12) and the corner groove (25) to attract the first magnetic element (10) on the door frame.

2. The novel WPC quick-install aluminum-wood door according to claim 1, characterized in that: The second side seal (12) has an exhaust groove (16) provided along the vertical direction on the outer side, and a reinforcing plate (17) is provided along the length direction on the inner side of the second side seal (12). A hollow magnet receiving cavity (18) for placing the second magnetic suction piece (20) is formed between the reinforcing plate (17) and the second side seal (12). The free ends of the first side sealing edge (11) and the third side sealing edge (13) are provided with an inner card plate (14) and an outer card plate (15) that are fastened to the panel (2101).

3. A novel WPC quick-install aluminum-wood door according to claim 2, characterized in that: The reinforcing plate (17) has a positioning surface (1701) that is parallel to the inner card plate (14) on one side near the inner card plate (14); after the side sealing edge is fastened to the door panel (21), the inner card plate (14), the outer card plate (15), the first side sealing edge (11), the third side sealing edge (13) and the positioning surface (1701) are all adapted to the outer surface of the door panel (21).

4. A novel WPC quick-install aluminum-wood door according to claim 3, characterized in that: The first side seal (11) and / or the third side seal (13) are uniformly provided with glue application grooves (19).

5. A novel WPC quick-install aluminum-wood door according to any one of claims 2-4, characterized in that: The door panel (21) is used in conjunction with the door frame. The door frame is provided with a door frame adhesive strip (7) corresponding to the second side sealing edge (12). When the door panel (21) is closed, the second side sealing edge (12) is attached to the inclined bonding surface (9) on the door frame adhesive strip (7). The first magnetic suction member (10) is embedded in the door frame adhesive strip (7). Multiple exhaust grooves (16) are provided, located on the second side sealing edge (12) at positions corresponding to the bonding surface (9).

6. A novel WPC quick-install aluminum-wood door according to claim 5, characterized in that: The door frame includes a main frame (1), a sub-frame (2), and a door frame plate (3) connecting the two. The main frame (1) has a protruding door stop (4) along the vertical direction to limit the door panel (21). The door frame rubber strip (7) can slide up and down and is locked inside the door stop (4). The side seal, the main frame (1), and the sub-frame (2) are all made of aluminum. The door frame plate (3) and the panel (2101) are both made of WPC material.

7. A novel WPC quick-install aluminum-wood door according to claim 6, characterized in that: The door frame is equipped with two specifications. When the main frame (1) of the door frame is located on the outside and the sub-frame (2) of the door frame is located on the inside, the door stop (4) is located at the outer end of the main frame (1). After the door panel (21) contacts the door stop (4), the outer side of the door panel (21) is flush with the outer side of the door frame. When the main frame (1) of the door frame is located on the inside and the sub-frame (2) of the door frame is located on the outside, the door stop (4) is located at the inner end of the main frame (1). After the door panel (21) contacts the door stop (4), the inner side of the door panel (21) is flush with the inner side of the door frame.

8. A novel WPC quick-install aluminum-wood door according to claim 7, characterized in that: The lengths and included angles of the first side seal (11), the second side seal (12) and the third side seal (13) are reasonably set so that when the door panel (21) is used for two types of door frames, the sealing performance is good after closing, and the side seals and door frames are prevented from interfering when the door panel (21) is opened.

9. A novel WPC quick-install aluminum-wood door according to claim 8, characterized in that: The panel (2101), graphite homogeneous board (2102), wood (2103) and side sealing edge are bonded together; the main frame (1), sub-frame (2) and frame plate (3) of the door frame are bonded together.

10. A novel WPC quick-install aluminum-wood door according to claim 9, characterized in that: The door panel (21) and the side sealing edge are entirely covered with a decorative layer.