Vacuum insulated panel of composite core material
By using a composite core structure and barrier membrane design, the problem of flash during the manufacturing process of vacuum insulation panels was solved, thereby improving the flatness and yield of the vacuum insulation panels.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN SUPER TECH ADVANCED MATERIAL CO LTD
- Filing Date
- 2025-03-21
- Publication Date
- 2026-04-17
AI Technical Summary
During the manufacturing process of existing vacuum insulation panels, burrs may form on both sides, affecting their performance.
The composite core material structure includes an upper, middle and lower core material. The width of the middle core material is smaller than that of the upper and lower core materials, forming a side groove. A barrier membrane is set in the side groove. The adsorbent is located on the middle core material. Under the action of the guide rod, the barrier membrane is tightly attached to the side groove, reducing the flash phenomenon.
It effectively reduces the flash on the sides of the vacuum insulation panel, improving the flatness of the finished product and the yield rate.
Smart Images
Figure CN224130660U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vacuum insulation panel technology, and in particular to a vacuum insulation panel with a composite core material. Background Technology
[0002] Vacuum insulation panels are a new type of high-efficiency insulation material based on the principle of vacuum insulation. They combine the advantages of vacuum insulation, microporous insulation and multilayer insulation, thus having outstanding insulation effect.
[0003] Patent document with application number 2020100026204 discloses an invisible edge-sealed packaging bag for vacuum insulation panels. It includes an aluminum foil film, with both the inner and outer layers of which are heat-sealing layers, or both layers are heat-sealing. An invisible edge-sealed aluminum foil bag is formed by heat-pressing one end of the aluminum foil film to the other end. This is achieved by heat-pressing the inner and outer layers of the aluminum foil film together, or by heat-pressing the aluminum foil film with an aluminized film or transparent film. This makes the edge seal an integral part of the bag, invisible from the outside, thus creating an invisible seal. When packaging vacuum insulation panels, only two sides need to be folded, which is more efficient than three-side sealed bags, reducing labor costs. Furthermore, the junction of the longitudinal and transverse seals is less prone to air leakage, thereby improving the yield rate.
[0004] After the core material is placed into the concealed-edge sealed packaging bag, the opening is vacuum-sealed to form a vacuum insulation panel, such as... Figure 1 As shown, under atmospheric pressure, the core material inside the vacuum insulation panel is compressed, which causes flash 10 to be generated on the left and right sides of the vacuum insulation panel. This flash 10 will affect the use of the vacuum insulation panel. Summary of the Invention
[0005] Based on the above-mentioned problems existing in the prior art, the purpose of this application embodiment is to provide a vacuum insulation board with composite core material, which is provided by setting an upper core material, an intermediate core material and a lower core material, and the width of the intermediate core material is smaller than the width of the upper core material and the lower core material, so that the vacuum insulation board formed on both sides forms a side groove, and the barrier film on the side is recessed in the side groove, thereby effectively reducing the flash phenomenon formed on the side.
[0006] The technical solution adopted by this application to solve its technical problem is: a vacuum insulation board with composite core material, including a barrier bag, a core material and an adsorbent;
[0007] The barrier bag is formed by heat-sealing the barrier film end to end; the core material includes an upper core material, a middle core material and a lower core material. The width of the upper core material is greater than the width of the middle core material, and the width of the middle core material is less than the width of the lower core material. A first side groove is formed on one side of the upper core material, the middle core material and the lower core material, and a second side groove is formed on the other side of the upper core material, the middle core material and the lower core material. The core material is placed inside the barrier bag, and the adsorbent is placed inside the barrier bag.
[0008] Furthermore, it also includes a first surface core material disposed on the upper surface of the upper core material; and a second surface core material disposed on the lower surface of the lower core material.
[0009] Furthermore, the thickness of the first outer core material is 1mm-5mm; the thickness of the second outer core material is 1mm-5mm.
[0010] Furthermore, both the first and second surface core materials are wet-processed core materials.
[0011] Furthermore, the upper core material is a foam-based core material; the middle core material is a fiber-based core material; and the lower core material is a foam-based core material.
[0012] Furthermore, the upper core material is phenolic resin; the middle core material is fiberglass mat; and the lower core material is phenolic resin.
[0013] Furthermore, the depth of the first side groove is 1mm-5mm; the depth of the second side groove is 1mm-5mm.
[0014] Furthermore, the thickness of the upper core material is 4mm-20mm; the thickness of the lower core material is 4mm-20mm; and the thickness of the middle core material is 3mm-12mm.
[0015] Furthermore, the adsorbent is located on the intermediate core material, and the adsorbent is sandwiched between the upper core material and the lower core material.
[0016] Furthermore, a receiving groove for accommodating the adsorbent is provided on the intermediate core material.
[0017] Furthermore, the barrier bag is made by overlapping and heat-sealing the barrier film end to end, and a PE heat-sealing layer is provided on both the upper and lower surfaces of the barrier film.
[0018] The beneficial effects of this application are as follows: During the manufacturing process of the vacuum insulation panel, after the opening of the barrier bag is heat-sealed in the vacuum cavity, the guide rod can be applied to the barrier film on the outside of the first and second side grooves. After the vacuum is broken, under the action of the guide rod, the side barrier film adheres tightly to the first and second side grooves, thereby making it less likely for flash to form on the sides of the manufactured vacuum insulation panel, effectively reducing the flash phenomenon formed on the sides of the vacuum insulation panel. Attached Figure Description
[0019] Figure 1 A cross-sectional view showing the flash phenomenon in existing vacuum insulation panels;
[0020] Figure 2 This is an exploded view of the vacuum insulation panel with composite core material in this application;
[0021] Figure 3 This is a cross-sectional view of the core material in this application;
[0022] Figure 4 This is a cross-sectional view of the vacuum insulation panel with composite core material in this application;
[0023] Figure 5 This is a cross-sectional view of the barrier membrane in this application.
[0024] Explanation of reference numerals in the attached figures
[0025] Barrier bag 1, barrier film 11, PE heat seal layer 111, core material 2, upper core material 21, middle core material 22, receiving groove 221, lower core material 23, first surface core material 24, second surface core material 25, adsorbent 3, first side groove 4, second side groove 5. Detailed Implementation
[0026] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.
[0027] like Figures 1 to 5 As shown, a vacuum insulation board with composite core material according to this utility model includes a barrier bag 1, a core material 2, and an adsorbent 3. The barrier bag 1 is formed by heat-sealing the ends of a barrier film 11. The core material 2 includes an upper core material 21, a middle core material 22, and a lower core material 23. The width of the upper core material 21 is greater than the width of the middle core material 22, and the width of the middle core material 22 is less than the width of the lower core material 23. A first side groove 4 is formed on one side of the upper core material 21, the middle core material 22, and the lower core material 23, and a second side groove 5 is formed on the other side of the upper core material 21, the middle core material 22, and the lower core material 23. The core material 2 is disposed inside the barrier bag 1, and the adsorbent 3 is disposed inside the barrier bag 1.
[0028] Thus, in the vacuum insulation panel of the composite core material involved in this utility model, after the opening of the barrier bag 1 is heat-sealed in the vacuum cavity during the manufacturing process, the guide rod can be applied to the barrier film 11 on the outside of the first side groove 4 and the second side groove 5. After the vacuum is broken, under the action of the guide rod, the side barrier film 11 is tightly attached to the first side groove 4 and the second side groove 5, thereby making it less likely for flash to form on the side of the vacuum insulation panel, effectively reducing the flash phenomenon formed on the side of the vacuum insulation panel.
[0029] Optionally, the system further includes a first surface core material 24, which is disposed on the upper surface of the upper core material 21; and a second surface core material 25, which is disposed on the lower surface of the lower core material 23. The first and second surface core materials 24 and 25 can be wet-processed core materials. By providing the first and second surface core materials 24 and 25, the upper core material 21 and the lower core material 23 can be protected. The wet-processed first and second surface core materials 24 and 25 result in a smoother upper and lower surface of the vacuum insulation panel. Preferably, the thickness of the first surface core material 24 is 1mm-5mm; the thickness of the second surface core material 25 is 1mm-5mm.
[0030] The barrier film 11 has a PE heat-sealing layer 111 on both its upper and lower surfaces, which facilitates the overlap and heat sealing of the barrier film 11 to form a cylindrical barrier. One end of the cylindrical barrier is then heat-sealed to form a barrier bag 1. The other end of the cylindrical barrier is the opening of the barrier bag 1. The core material 2 and the adsorbent 3 can be easily inserted through this opening. The width and height of the opening are equal to or slightly greater than the width and thickness of the core material 2. This allows the vacuum insulation board to be folded on its front and back sides after the core material 2 is inserted, without needing to fold the left and right sides of the vacuum insulation board.
[0031] In this embodiment, the upper core material 21 is a foam-based core material; the middle core material 2 is a fiber-based core material; and the lower core material 23 is a foam-based core material. Specifically, the upper core material 21 is a phenolic core material; the middle core material 2 is a dry-laid glass fiber mat core material; and the lower core material 23 is a phenolic core material. Phenolic core materials have low mechanical strength and high brittleness; therefore, a wet-laid core material is placed on the outer surface of the phenolic core material to protect it. Simultaneously, by using a phenolic core material, the overall weight of the phenolic core material is lighter, resulting in a lighter vacuum insulation panel. The width of the upper core material 21 is equal to the width of the lower core material 23.
[0032] Specifically, the depth of the first side groove 4 is 1mm-5mm; the depth of the second side groove 5 is 1mm-5mm; the thickness of the upper core material 21 is 4mm-20mm; the thickness of the lower core material 23 is 4mm-20mm; and the thickness of the middle core material 22 is 3mm-12mm, so that vacuum insulation panels of different thicknesses can be made according to requirements.
[0033] In this embodiment, the adsorbent 3 is located on the intermediate core material 22, sandwiched between the upper core material 21 and the lower core material 23. Traditionally, when manufacturing lightweight vacuum insulation panels, grooves are created in the phenolic core material before the adsorbent 3 is placed within these grooves. Because of the gap between the adsorbent 3 and the grooves, the surface of the vacuum insulation panel is uneven after fabrication. To address this issue, in this embodiment, the adsorbent 3 is sandwiched between the upper core material 21 and the lower core material 23, resulting in a smooth surface on the finished vacuum insulation panel. Specifically, a receiving groove 221 for accommodating the adsorbent 3 is provided on the intermediate core material 22, facilitating the placement of the adsorbent 3 within this groove 221.
[0034] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A vacuum insulation panel with a composite core material, comprising a barrier bag, a core material, and an adsorbent; wherein the barrier bag is formed by heat-sealing the ends of a barrier film; characterized in that: The core material includes an upper core material, an intermediate core material, and a lower core material. The width of the upper core material is greater than the width of the intermediate core material, and the width of the intermediate core material is less than the width of the lower core material. A first side groove is formed on one side of the upper core material, the intermediate core material, and the lower core material, and a second side groove is formed on the other side of the upper core material, the intermediate core material, and the lower core material. The core material is disposed inside a barrier bag, and the adsorbent is disposed inside the barrier bag.
2. The vacuum insulated panel of claim 1, wherein: It also includes a first surface core material disposed on the upper surface of the upper core material; and a second surface core material disposed on the lower surface of the lower core material.
3. The vacuum insulated panel of claim 2, wherein: The thickness of the first outer core material is 1mm-5mm; the thickness of the second outer core material is 1mm-5mm.
4. The vacuum insulated panel of claim 2, wherein: The first and second surface core materials are wet-processed core materials.
5. The vacuum insulated panel of claim 1, wherein: the composite core material is a honeycomb core material. The upper core material is a foam-based core material; the middle core material is a fiber-based core material; and the lower core material is a foam-based core material.
6. The vacuum insulated panel of claim 5, wherein: The upper core material is phenolic resin core material; the middle core material is glass fiber felt core material; and the lower core material is phenolic resin core material.
7. The vacuum insulated panel of claim 1, wherein: The depth of the first side groove is 1mm-5mm; the depth of the second side groove is 1mm-5mm.
8. The vacuum insulated panel of claim 1, wherein: The thickness of the upper core material is 4mm-20mm; the thickness of the lower core material is 4mm-20mm; and the thickness of the middle core material is 3mm-12mm.
9. The vacuum insulated panel of claim 1, wherein: The adsorbent is located on the intermediate core material, and the adsorbent is sandwiched between the upper core material and the lower core material.
10. The vacuum insulated panel of claim 1, wherein: The barrier bag is formed by overlapping and heat-sealing the barrier film end to end, and a PE heat-sealing layer is provided on both the upper and lower surfaces of the barrier film.