Composite board and bathroom cabinet
By controlling the honeycomb hole side length to less than 4mm in the honeycomb aluminum layer and designing two layers of SPC layers, the problems of insufficient screw holding force and abnormal noise of the composite board are solved, and the stability and service life of the bathroom cabinet are improved.
Patent Information
- Application Number
- CN202422645457.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2034-10-31
AI Technical Summary
The existing composite panels have insufficient screw holding force, which causes bathroom cabinet door panels to easily fall off and produce abnormal noises during opening and closing. At the same time, they easily absorb water and expand in humid environments, affecting their service life.
By controlling the side length of the honeycomb holes of the honeycomb aluminum layer to less than 4mm and combining the structural design of the two SPC layers, the screw holding force of the composite board is improved, the risk of door panels falling off is reduced, and abnormal noise during the opening and closing of the cabinet door is reduced.
It improves the screw holding force of the composite board, reduces the risk of bathroom cabinet door panels falling off, reduces abnormal noise when switching, and has waterproof and moisture-proof properties, extending the product life.
Smart Images
Figure CN223407607U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of board materials, and in particular to a composite board and a bathroom cabinet. Background Art
[0002] With the improvement of people's living standards, bathroom cabinets are increasingly used, especially those made of triamcinol board. However, bathroom cabinets are often exposed to humid environments during use, and triamcinol board is prone to swelling due to water absorption. In severe cases, the edge banding can fall off, rendering it unusable, seriously affecting the user experience and shortening the product's lifespan. Metal bathroom cabinets are gradually becoming popular. Currently, there is a composite board on the market that is made by mixing SPC board and honeycomb aluminum. It is waterproof and moisture-proof, has high strength, and can solve problems such as the board surface being prone to dents. However, bathroom cabinets made of this material not only have weak screw grip and are prone to door panels falling off during packaging and testing, but also produce unusual noises when the cabinet doors are opened and closed due to the shaking and shifting of the honeycomb aluminum. Summary of the Invention
[0003] Based on the defects of the existing technology, the purpose of this application is to provide a composite panel and a bathroom cabinet to improve the screw holding force of the composite panel formed by SPC panel and honeycomb aluminum, reduce the risk of door panels of bathroom cabinets made therefrom falling off, and at the same time reduce the abnormal noise generated by the bathroom cabinet during the opening and closing process.
[0004] In order to achieve the above-mentioned objectives, in the first aspect, the present application provides a composite board material, comprising a first SPC layer, a first adhesive layer, a honeycomb aluminum layer, a second adhesive layer and a second SPC layer stacked in sequence, wherein the honeycomb hole shape of the honeycomb aluminum layer is hexagonal, and the side length of the honeycomb hole is less than 4 mm.
[0005] During their research, the inventors discovered that the side length of the honeycomb holes affects the composite sheet's screw-holding strength, which in turn affects the problem of bathroom cabinet door panels falling off. This also affects the noise produced during the cabinet's opening and closing process. By controlling the honeycomb hole side length to less than 4mm, the porosity within the honeycomb aluminum layer is reduced. This not only improves the composite sheet's screw-holding strength and reduces the risk of bathroom cabinet door panels falling off, but also solves the problem of noise produced during the cabinet's opening and closing process.
[0006] The composite panel provided in this application introduces a honeycomb aluminum layer and controls the range of the side length of the honeycomb holes. Combined with the structural design of the two-layer SPC layer, it can improve the screw holding force, solve the problem of easy falling off of the door panel and the problem of abnormal noise generated by the cabinet door during the opening and closing process. In addition, it has the advantages of being waterproof and moisture-proof, completely solving the quality problems caused by water absorption and expansion, and extending the service life of the product.
[0007] This application requires that the honeycomb cell side length be controlled to be below 4mm, for example, 4mm, 3.8mm, 3.6mm, 3.4mm, 3.2mm, 3mm, 2.5mm, 2mm, or a range formed by any two of the above values. Preferably, the honeycomb cell side length is 3-4mm. Currently, the honeycomb cell side lengths of commercially available aluminum honeycombs are mainly above 3mm. Controlling the honeycomb cell side length within the 3-4mm range makes honeycomb aluminum materials more readily available.
[0008] Preferably, the thickness of the first adhesive layer and the second adhesive layer are independently 0.1-0.2 mm.
[0009] When the thickness of the first adhesive layer and the second adhesive layer is within the above-mentioned specific range, the bonding strength between the honeycomb aluminum layer and the first SPC layer and the second SPC layer is higher, and the screw holding force is stronger.
[0010] Preferably, the first adhesive layer and the second adhesive layer are made of polyurethane adhesive.
[0011] Preferably, the thickness of the first SPC layer and the second SPC layer are each independently 1.5-2.5 mm. For example, the thickness of the first SPC layer is 1.5 mm, 1.7 mm, 1.9 mm, 2 mm, 2.2 mm, 2.4 mm, 2.5 mm, or a range formed by any two of the above values; the thickness of the second SPC layer is 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, 2 mm, 2.1 mm, 2.2 mm, 2.3 mm, 2.4 mm, 2.5 mm, or a range formed by any two of the above values. By controlling the thickness of the first SPC layer and the second SPC layer within the range of 1.5-2.5 mm, the composite sheet is made stronger and has a stronger screw-holding force at a lower cost.
[0012] Preferably, the thickness of the honeycomb aluminum layer is 8-20 mm. For example, the thickness of the honeycomb aluminum layer is 8 mm, 10 mm, 11 mm, 12 mm, 14 mm, 16 mm, 18 mm, 20 mm, or a range formed by any two of these values. Honeycomb aluminum has high strength, high specific stiffness, and is lightweight. Controlling the thickness of the honeycomb aluminum layer within the range of 8-20 mm helps improve the mechanical properties of the product.
[0013] Preferably, the thickness of the composite sheet is 12-26 mm. For example, the thickness of the composite sheet is 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 20 mm, 21 mm, 22 mm, 23 mm, 24 mm, 25 mm, 26 mm, or a range formed by any two of the above values.
[0014] Preferably, the composite board further comprises a first finishing layer, a second finishing layer, a third adhesive layer and a fourth adhesive layer, wherein:
[0015] The first finishing layer is bonded to the surface of the first SPC layer facing away from the honeycomb aluminum layer through the third adhesive layer;
[0016] The second finishing layer is bonded to the surface of the second SPC layer facing away from the honeycomb aluminum layer through the fourth adhesive layer.
[0017] Preferably, the thickness of the first finishing layer and the second finishing layer are independently 0.15-0.25 mm. For example, the thickness of the first finishing layer is 0.15 mm, 0.16 mm, 0.17 mm, 0.18 mm, 0.19 mm, 0.20 mm, 0.21 mm, 0.22 mm, 0.23 mm, 0.24 mm, 0.25 mm, or a range formed by any two of the above values; the thickness of the second finishing layer is 0.15 mm, 0.16 mm, 0.17 mm, 0.18 mm, 0.19 mm, 0.20 mm, 0.21 mm, 0.22 mm, 0.23 mm, 0.24 mm, 0.25 mm, or a range formed by any two of the above values.
[0018] Preferably, the first and second facing layers are each independently a PVC film layer or a PET film layer. More preferably, the first and second facing layers are each independently a PVC film layer. PVC film is a common facing material for composite panels, being widely available, readily available, and inexpensive.
[0019] Preferably, the thickness of the third adhesive layer and the fourth adhesive layer is independently 0.1-0.2 mm.
[0020] When the thickness of the third adhesive layer and the fourth adhesive layer is within the above-mentioned specific range, the bonding strength between the first SPC layer and the first finishing layer, and between the second SPC layer and the second finishing layer is higher, which can effectively prevent the first finishing layer and the second finishing layer from falling off.
[0021] Preferably, the third adhesive layer and the fourth adhesive layer are made of polyurethane adhesive.
[0022] In a second aspect, the present application provides a bathroom cabinet comprising the composite board, which can be used as the main cabinet bottom plate, side plates, braces, fascia, door plates, and other boards of the bathroom cabinet.
[0023] The bathroom cabinet comprises a main cabinet bottom plate, side plates, pull strips, a viewing panel and a door panel, and at least one of the main cabinet bottom plate, side plates, pull strips, the viewing panel and the door panel is made of the composite board material.
[0024] Compared with the existing technology, the beneficial effect of the present application is that the present application controls the side length of the honeycomb holes of the honeycomb aluminum layer within a specific range to improve the screw holding force of the composite board, reduce the risk of the door panel of the bathroom cabinet made using it falling off, and at the same time solve the problem of abnormal noise generated by the cabinet door of the bathroom cabinet during the opening and closing process. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 Schematic diagram of the structure of the composite board obtained in Example 1, wherein 1 is a honeycomb aluminum layer, 21 is a first SPC layer, 22 is a second SPC layer, 31 is a first finishing layer, and 32 is a second finishing layer. DETAILED DESCRIPTION
[0026] In order to better illustrate the purpose, technical solutions and advantages of the present application, the present application will be further described below in conjunction with specific embodiments and comparative examples. Its purpose is to understand the content of the present application in detail, rather than to limit the present application. All other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of the present application. The experimental reagents and instruments involved in the implementation of this application are all commonly used ordinary reagents and instruments unless otherwise specified. In this application, the technical features described in an open manner include closed technical solutions composed of the listed features, and also include open technical solutions comprising the listed features.
[0027] Example 1
[0028] Reference Figure 1 This embodiment provides a composite board, comprising a first facing layer 31, a third adhesive layer (not in Figure 1 ), the first SPC layer 21, the first adhesive layer (not shown in Figure 1 Shown in), honeycomb aluminum layer 1, second adhesive layer (not shown in Figure 1 ), the second SPC layer 22, the fourth adhesive layer (not shown Figure 1 ) and a second finishing layer 32, wherein
[0029] The honeycomb holes of the honeycomb aluminum layer 1 are hexagonal in shape, with a side length of 3 mm and a thickness of 11 mm.
[0030] The first adhesive layer and the second adhesive layer are polyurethane adhesive (with shark fin), and the thickness of both is 0.15mm;
[0031] The thickness of the first SPC layer 21 and the second SPC layer 22 are both 2 mm;
[0032] The third and fourth adhesive layers are polyurethane adhesive (Henkel), both with a thickness of 0.15 mm;
[0033] The first finishing layer 31 and the second finishing layer 32 are PVC films, both of which have a thickness of 0.20 mm;
[0034] The thickness of the composite board is 16 mm.
[0035] Example 2
[0036] This embodiment provides a composite plate material. The difference between this composite plate material and that of embodiment 1 is that the side length of the honeycomb holes of the honeycomb aluminum layer 1 in this embodiment is 4 mm.
[0037] Examples 3 to 6
[0038] These embodiments all provide a composite board. These composite boards differ from embodiment 1 in that the thicknesses of the first adhesive layer and the second adhesive layer are different.
[0039] In Example 3, the thickness of the first adhesive layer and the second adhesive layer are both 0.1 mm, and the thickness of the composite plate is 15.9 mm;
[0040] In Example 4, the thickness of the first adhesive layer and the second adhesive layer are both 0.2 mm, and the thickness of the composite plate is 16.1 mm;
[0041] In Example 5, the thickness of the first adhesive layer and the second adhesive layer are both 0.04 mm, and the thickness of the composite plate is 15.78 mm;
[0042] In Example 6, the thickness of the first adhesive layer and the second adhesive layer are both 0.4 mm, and the thickness of the composite board is 16.5 mm.
[0043] Examples 7-8
[0044] These embodiments all provide a composite board. These composite boards differ from Example 1 in that the thicknesses of the honeycomb aluminum layer 1, the first SPC layer 21, the second SPC layer 22, the third adhesive layer, the fourth adhesive layer, the first finishing layer 31, the second finishing layer 32, and the composite board are different (and the adhesives used in the third adhesive layer and the fourth adhesive layer are different, if any), as follows:
[0045] In Example 7, the thickness of the honeycomb aluminum layer 1 is 9 mm, the thickness of the first SPC layer 21 and the second SPC layer 22 are both 1.5 mm, the thickness of the third adhesive layer and the fourth adhesive layer are both 0.1 mm, the thickness of the first finishing layer 31 and the second finishing layer 32 are both 0.15 mm, and the thickness of the composite board is 12.8 mm;
[0046] In Example 8, the thickness of the honeycomb aluminum layer 1 is 19 mm, the thickness of the first SPC layer 21 and the second SPC layer 22 are both 2.5 mm, the thickness of the third adhesive layer and the fourth adhesive layer are both 0.2 mm, the thickness of the first finishing layer 31 and the second finishing layer 32 are both 0.25 mm, the thickness of the composite board is 25.2 mm, and the first adhesive layer, the second adhesive layer, the third adhesive layer and the fourth adhesive layer are all made of polyurethane glue (with shark fin).
[0047] Comparative Example 1
[0048] This comparative example provides a composite plate material. The difference between this composite plate material and Example 1 is that the side length of the honeycomb holes of the honeycomb aluminum layer 1 in this comparative example is 5 mm.
[0049] Test Case
[0050] The following tests were performed on the composite panels obtained from the above embodiments and comparative examples:
[0051] (1) The screw holding force was measured according to 4.21 of GB / T 17657-2022 Test methods for physical and chemical properties of wood-based panels and veneered wood-based panels. PA pre-embedded nuts and self-tapping screws were mainly used for the screw holding force test. The screws were placed in a constant temperature and humidity chamber at a temperature of 20°C and a humidity of 65% until the mass was constant. After the screws were driven in, they were pulled out at a constant speed of 5 mm / min. The test results showed that the greater the force required to pull out the screws, the better the performance of the board.
[0052] (2) Determine the peeling resistance according to 4.20 of GB / T 17657-2022 Test Method for Physical and Chemical Properties of Artificial Boards and Finished Artificial Boards. Place the sample in a constant temperature and humidity chamber at 20°C and 65% until the mass is constant. Cut into the SPC board from 10 mm from one end and pull the SPC board apart by half. The upper and lower clamps of the tensile testing machine clamp the peeling end of the SPC board and the peeled SPC board respectively. Place the sample vertically and pull the sample apart at a constant speed. The greater the peeling force in the test result, the better the performance of the board.
[0053] (3) The composite board is made into a bathroom cabinet. The specific preparation method is as follows:
[0054] ①Use a cutting machine to cut the composite board into the required sizes of the main cabinet bottom panel, side panels, braces, fascia panels and door panels;
[0055] ②Edge sealing: Use PVC edge banding strips for edge sealing;
[0056] ③ Punching: Use six-sided drilling to make holes;
[0057] ④ Assembly: Use two-in-one connectors to connect the main cabinet bottom panel, side panels, braces, fascia, and door panels to complete the bathroom cabinet. Perform a drop test according to GBT 4857.5-1992. If the product is intact and shakes without making any unusual noises after the test, it indicates that the panel performance is good.
[0058] The test results are shown in Table 1.
[0059] Table 1
[0060]
[0061]
[0062] It can be seen from the above data that the peeling force between the SPC layer and the honeycomb aluminum layer in the composite board of the embodiment of the present application is high, and the board has high screw holding force. For example, the peeling force between the SPC layer and the honeycomb aluminum layer is above 40N, and the board has high screw holding force. The door panel of the bathroom cabinet made of the composite board is not easy to fall off, and the cabinet door does not make abnormal noise when shaking after the drop test.
[0063] Comparison of Examples 1 and 2 with Comparative Example 1 shows that when the side length of the honeycomb holes in the honeycomb aluminum layer is less than 4 mm, the composite sheet has a higher screw holding force, and the bathroom cabinet made therefrom has good performance and does not produce abnormal noise during use.
[0064] From the comparison of Examples 1, 3 to 6, it can be seen that when the thickness of the first adhesive layer and the second adhesive layer is in the range of 0.1-0.2 mm, the peeling force between the SPC layer and the honeycomb aluminum layer and the screw holding force of the plate are higher.
[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit the scope of protection of the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application may be modified or replaced by equivalents without departing from the essence and scope of the technical solutions of the present application.
Claims
1. A composite plate, characterized in that: The invention comprises a first SPC layer, a first adhesive layer, a honeycomb aluminum layer, a second adhesive layer and a second SPC layer stacked in sequence. The honeycomb holes of the honeycomb aluminum layer are hexagonal in shape and the side length of the honeycomb holes is less than 4 mm.
2. The composite plate according to claim 1, wherein: The side length of the honeycomb holes is 3-4 mm.
3. The composite plate according to claim 1, wherein: The thickness of the first adhesive layer and the second adhesive layer are each independently 0.1-0.2 mm.
4. The composite plate according to claim 1, wherein: The first adhesive layer and the second adhesive layer are made of polyurethane adhesive.
5. The composite plate according to claim 1, wherein: The thickness of the first SPC layer and the second SPC layer are each independently 1.5-2.5 mm.
6. The composite plate according to claim 1, wherein: The thickness of the honeycomb aluminum layer is 8-20 mm.
7. The composite plate according to claim 1, wherein: The thickness of the composite board is 12-26 mm.
8. The composite plate according to claim 1, wherein: The composite board further comprises a first finishing layer, a second finishing layer, a third adhesive layer and a fourth adhesive layer, wherein: The first finishing layer is bonded to the surface of the first SPC layer facing away from the honeycomb aluminum layer through the third adhesive layer; The second finishing layer is bonded to the surface of the second SPC layer facing away from the honeycomb aluminum layer through the fourth adhesive layer.
9. The composite plate according to claim 8, wherein: At least one of conditions S1 to S3 must be met: S1. The thickness of the first finishing layer and the second finishing layer are each independently 0.15-0.25mm; S2. The first finishing layer and the second finishing layer are each independently a PVC film layer or a PET film layer; S3. The thickness of the third adhesive layer and the fourth adhesive layer are each independently 0.1-0.2 mm; S4. The third adhesive layer and the fourth adhesive layer are made of polyurethane adhesive.
10. A bathroom cabinet, characterized in that: The bathroom cabinet comprises the composite board according to any one of claims 1 to 9.