Novel vacuum insulation panel

Abstract

The utility model provides a novel vacuum insulated panel which comprises a core material and a barrier film. The core material is wrapped in the barrier film, the core material is a polyurethane foam board, the thickness of the core material is 5-100mm, the barrier film is an aluminum barrier film or an EV film material, and the thickness of the film material is 15-120mu m. According to the novel vacuum insulation panel, pure glass fibers or fumed silica used throughout the year is abandoned, the density of a product is effectively reduced, and light weight and stable performance are achieved.

Description

Technical Field

[0001] This utility model belongs to the technical field of thermal insulation materials, and in particular relates to a novel vacuum insulation board. Background Technology

[0002] Vacuum insulation panels (VIPs), as a new type of high-efficiency, energy-saving, and environmentally friendly insulation material that has emerged in recent years, are widely used in various fields such as home appliances, construction, and aerospace due to their extremely low thermal conductivity and excellent insulation performance. In these fields, especially in construction and aerospace, there are strict requirements regarding the weight and density of the materials.

[0003] For example, in the construction industry, vacuum insulation panels are used for thermal insulation and heat preservation of shells, roofs, and floors, requiring materials that are both lightweight and efficient. In the aerospace industry, vacuum insulation panels are used to prevent high-temperature damage to electronic components and freezing at extremely low temperatures, placing even more stringent requirements on the weight and density of the materials. As the vacuum insulation panel market continues to expand, market competition is becoming increasingly fierce. To gain a competitive advantage, companies need to continuously reduce costs and improve the cost-effectiveness of their products. How to reduce material density and cost while ensuring thermal insulation performance, achieving low-density and low-cost production of vacuum insulation panels, is a series of technical challenges that currently need to be overcome. Summary of the Invention

[0004] Technical solution: In order to solve the above-mentioned technical problems, this utility model provides a novel vacuum insulation panel, which specifically includes a core material and a barrier film; the core material is wrapped inside the barrier film, wherein the core material is a polyurethane foam board with a thickness of 5-100mm, and the barrier film is an aluminum film barrier film or EV film with a thickness of 15-120μm.

[0005] As an improvement, the core material includes a polyurethane foam board and a fumed silica pressed board, wherein there is at least one fumed silica pressed board, and the thickness of each layer is 2-20 mm.

[0006] As an improvement, the core material includes a polyurethane foam board and a glass fiber pressed board, wherein there is at least one layer of glass fiber pressed board, each layer has a thickness of 1-20 mm, and the glass fiber diameter is 3-5 μm.

[0007] As an improvement, the core material includes a polyurethane foam board, a fumed silica pressed board, and a glass fiber pressed board, wherein the polyurethane foam board is disposed between the fumed silica pressed board and / or the glass fiber pressed board.

[0008] As an improvement, a desiccant is also included, wherein the desiccant has the structure of at least one of calcium oxide, phosphorus pentoxide, silica gel, and molecular sieve.

[0009] As an improvement, it also includes a getter, wherein the getter has the structure of at least one of calcium oxide, magnesium chloride, and barium lithium alloy alkaline earth metal-based getters.

[0010] As an improvement, the barrier film is VMPET / VMPET / VMPET / PE, and the thickness from top to bottom is set as follows: VMPET film 10-25μm, VMPET film 5-18μm, VMPET film 10-30μm, PE 40-75μm.

[0011] As an improvement, the barrier film is PA / MPET / MPET / VMPET / EVOH / PE, with the thicknesses from top to bottom set as follows: PA film 10-25μm, MPET film 1-8μm, MPET film 1-15μm, VMPET film 5-18μm, EVOH film 1-15μm, and PE film 35-65μm.

[0012] As an improvement, when the thickness of the vacuum insulation panel is less than 20mm, the barrier film folding position is placed on the surface of the vacuum insulation panel; when the thickness of the vacuum insulation panel is 20-100mm, the barrier film folding position is placed on the side surface of the vacuum insulation panel.

[0013] Beneficial effects: The vacuum insulation panel proposed in this utility model, on the one hand, uses polyurethane foam board as the core material, or can add silica prefabricated board or glass fiber prefabricated board, which can achieve low density and low cost; on the other hand, the barrier film is designed to use VMPET / VMPET / VMPET / PE or PA / MPET / MPET / VMPET / EVOH / PE. The vacuum insulation panel obtained by this design, using the above-mentioned process technology, can have a thermal conductivity of <8mw / mk, compared with the conventional product >10mw / mk, the performance of the product is effectively improved.

[0014] Meanwhile, this invention abandons the commonly used pure glass fiber or fumed silica, effectively reducing the product's density and achieving lightweight and stable performance. More importantly, when the thickness of the vacuum-sealed product is greater than 20 mm, the folding method adopts side folding, folding the barrier bag to the side of the product, i.e., in the thickness direction. This reduces the production size of barrier bags that are conventionally folded to the surface, effectively reducing the use of raw materials, lowering costs, and improving aesthetics. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the vacuum insulation panel of this utility model.

[0016] Figure 2 This is a schematic diagram of the structure of the device of this utility model.

[0017] Figure 3This is a schematic diagram of the barrier film in Embodiment 1 of this utility model.

[0018] Figure 4 This is a schematic diagram of the barrier film structure in Embodiment 2 of this utility model.

[0019] In the diagram: 1. Core material; 2. Barrier film; 3. Desiccant; 4. Getter; 5. Polyurethane foam board; 6. Fumed silica pressed board; 7. Fiberglass pressed board; 8. First layer VMPET film; 9. Second layer VMPET film; 10. Third layer VMPET film; 11. PE film; 22. First layer PA film; 23. Second layer MPET film; 24. Third layer MPET film; 25. Fourth layer VMPET film; 26. Fifth layer EVOH film; 27. Sixth layer PE film; 38. Folded edge position. Detailed Implementation

[0020] The specific embodiments of this utility model will be described in further detail below with reference to the examples. These examples are used to illustrate this utility model, but are not intended to limit its scope.

[0021] See Figure 1 As shown, the present invention provides a novel vacuum insulation panel, comprising a core material 1 and a barrier film 2; the core material is wrapped inside the barrier film 2, wherein the core material 1 is a polyurethane foam board with a thickness of 5-100mm, and the barrier film is an aluminum film barrier film or an EV film with a thickness of 15-120μm.

[0022] As a specific embodiment of this utility model, the core material 1 includes a polyurethane foam board 5 and a fumed silica pressed board 6, wherein there is at least one fumed silica pressed board 6, and the thickness of each layer is 2-20mm.

[0023] Furthermore, the core material 1 includes a polyurethane foam board 5 and a glass fiber pressed board 7, wherein there is at least one layer of glass fiber pressed board 7, the thickness of each layer is 1-20mm, and the diameter of the glass fiber is 3-5μm.

[0024] The core material 1 includes a polyurethane foam board 5, a fumed silica pressed board 6, and a glass fiber pressed board 7, wherein the polyurethane foam board 5 is disposed between the fumed silica pressed board 6 and / or the glass fiber pressed board 7. See Figure 2 As shown, the polyurethane foam board 5 is disposed between the fumed silica pressing board 6 and the glass fiber pressing board 7.

[0025] It also includes a desiccant 3, which has the structure of at least one of calcium oxide, phosphorus pentoxide, silica gel, and molecular sieve. It also includes a getter 4, which has the structure of at least one of calcium oxide, magnesium chloride, and barium-lithium alloy-based alkaline earth metal getters.

[0026] See Figure 2As shown, when the thickness of the vacuum insulation board is less than 20mm, the folded edge of the barrier film 2 is placed on the surface of the vacuum insulation board; when the thickness of the vacuum insulation board is 20-100mm, the folded edge 8 of the barrier film 2 is placed on the side surface of the vacuum insulation board, i.e., in the thickness direction. This reduces splicing errors during use and reduces thickness deviation, thereby improving the insulation effect.

[0027] Example 1

[0028] See Figure 3 As shown, the barrier film is a four-layer composite film VMPET / VMPET / VMPET / PE, including a first layer VMPET film 21, a second layer VMPET film 22, a third layer VMPET film 23, and a PE film 24. Their thicknesses from top to bottom are set as follows: VMPET film 10-25μm, VMPET film 5-18μm, VMPET film 10-30μm, and PE film 40-75μm.

[0029] Example 2

[0030] See Figure 4 As shown, the barrier film is a six-layer composite film PA / MPET / MPET / VMPET / EVOH / PE, including a first layer PA film 25, a second layer MPET film 26, a third layer MPET film 27, a fourth layer VMPET film 28, a fifth layer EVOH film 29, and a sixth layer PE film 30. Their thicknesses from top to bottom are set as follows: PA film 10-25μm, MPET film 1-8μm, MPET film 1-15μm, VMPET film 5-18μm, EVOH film 1-15μm, and PE film 35-65μm.

[0031] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A novel vacuum insulation panel, characterized in that: It includes a core material (1) and a barrier film (2); the core material is wrapped inside the barrier film (2), wherein the core material (1) is a polyurethane foam board, and the thickness of the core material (1) is 5-100mm. The barrier film is an aluminum film barrier film or an EV film material, with a thickness of 15-120μm; When the thickness of the vacuum insulation board is less than 20 mm, the folded edge of the barrier film (2) is placed on the surface of the vacuum insulation board; when the thickness of the vacuum insulation board is 20-100 mm, the folded edge of the barrier film (2) is placed on the side surface of the vacuum insulation board; the barrier film is PA / MPET / MPET / VMPET / EVOH / PE, and the thickness from top to bottom is set as follows: PA film 10-25 μm, MPET film 1-8 μm, MPET film 1-15 μm, VMPET film 5-18 μm, EVOH film 1-15 μm, PE film 35-65 μm.

2. The novel vacuum insulation panel according to claim 1, characterized in that: The core material (1) includes a polyurethane foam board (5) and a fumed silica pressed board (6), wherein there is at least one fumed silica pressed board (6), and the thickness of each layer is 2-20 mm.

3. The novel vacuum insulation panel according to claim 1, characterized in that: The core material (1) includes a polyurethane foam board (5) and a glass fiber pressed board (7), wherein there is at least one layer of glass fiber pressed board (7), the thickness of each layer is 1-20mm, and the diameter of the glass fiber is 3-5μm.

4. The novel vacuum insulation panel according to claim 1, characterized in that: The core material (1) includes a polyurethane foam board (5), a fumed silica pressed board (6), and a glass fiber pressed board (7), wherein the polyurethane foam board (5) is disposed between the fumed silica pressed board (6) and / or the glass fiber pressed board (7).

5. The novel vacuum insulation panel according to claim 1, characterized in that: It also includes a desiccant (3), wherein the desiccant has the structure of at least one of calcium oxide, phosphorus pentoxide, silica gel, and molecular sieve.

6. The novel vacuum insulation panel according to claim 1, characterized in that: It also includes a getter (4), wherein the getter (4) is a structure of at least one of calcium oxide, magnesium chloride, and barium lithium alloy alkaline earth metal-based getters.

7. The novel vacuum insulation panel according to claim 1, characterized in that: The barrier membrane is VMPET / VMPET / VMPET / PE, with thicknesses from top to bottom set as follows: VMPET film 10-25μm, VMPET film 5-18μm, VMPET film 10-30μm, PE 40-75μm.

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