Air-leakage-proof vacuum insulated panel and preparation method thereof

Abstract

The invention provides an anti-air-leakage vacuum insulated panel and a preparation method thereof. The anti-air-leakage vacuum insulated panel is formed by taking a normal and common VIP plate as a core material, adhering a felt layer on the surface, then putting the VIP plate into an isolation bag and vacuumizing. Due to the fact that the felt layer and the isolation bag have a certain heat insulation effect, the heat preservation performance of the VIP board prepared in the mode is greatly improved compared with that of a common VIP board made of the same material, meanwhile, one-time vacuumizing is added in the mode, the common VIP board arranged in the outer-layer aluminum foil bag is further cured, the main heat preservation and insulation effect is achieved, and the service life of the VIP board is prolonged. Even if the outer-layer isolation bag is damaged, the inner VIP plate can still have the vacuum heat preservation function, air leakage of the inner VIP plate can be prevented, the service life of the VIP plate is greatly prolonged, and the VIP plate prepared through the method is more suitable for being used in the environment with the high requirement for heat preservation performance.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum insulation panels, and in particular to a leakage-proof vacuum insulation panel and a preparation method thereof. Background Art

[0002] Driven by global energy conservation and emission reduction policies and technological progress, the demand for thermal insulation materials has gradually increased, especially in the fields of home appliances and construction. Traditional thermal insulation materials, such as polyurethane foam, can no longer meet the technical requirements of diversified applications in these fields. Therefore, new thermal insulation materials and technologies have emerged.

[0003] Among them, vacuum insulation panels (VIP panels) have become an ideal choice for energy-efficient, thin and light structures due to their extremely low thermal conductivity. VIP panels have been widely used in building insulation, medical facilities, transportation, aerospace, and household appliances. Especially in household appliances such as refrigerators, VIP panels have obvious advantages as thermal insulation panels.

[0004] However, in actual use, the core material of the vacuum insulation panel has a large expansion coefficient and is easily affected by the doping of hard substances or abrasion and scratching under the action of external forces, which can cause the outer film material to break and leak. Once the internal vacuum structure is destroyed, the insulation performance and service life of the VIP panel will be seriously affected. Secondly, traditional VIP panels have certain defects in the folding method of the film material, which may also cause gas leakage. During the packaging process of the VIP panel, the edge of the film material is often not completely wrapped, which greatly reduces the thermal bridge effect and thus affects the insulation capacity of the VIP panel. Summary of the invention

[0005] The present application provides a leakage-proof vacuum insulation panel and a preparation method thereof, so as to solve the problems that the existing vacuum insulation panel is easily damaged by the doping of hard substances or the wear and scratching under the action of external forces, thereby causing the aluminum foil bag of the film material to be damaged and leak.

[0006] In a first aspect, the present application provides a method for preparing a gas leakage-proof vacuum insulation panel, comprising the steps of:

[0007] Select VIP board or prepare VIP board;

[0008] Evenly adhering the felt layer to the surface of the VIP panel;

[0009] Putting the VIP board with the felt layer adhered thereto into an isolation bag as a whole;

[0010] The insulating bag is placed in a vacuum chamber for secondary vacuum treatment to obtain a leak-proof vacuum insulation panel;

[0011] The vacuum insulation panel is subjected to air tightness testing and performance testing.

[0012] In a feasible implementation, the step of uniformly adhering the felt layer to the surface of the VIP panel further includes:

[0013] The glue is evenly applied on the back of the felt layer by direct coating;

[0014] Placing the felt layer coated with glue on the surface of the VIP board, and using a fixture to press the felt layer to fit the VIP board;

[0015] The VIP board with the felt layer attached is left to cure for 24 hours;

[0016] The felt layer and the VIP board after bonding were quality inspected, and no debonding or delamination was found after high and low temperature tests.

[0017] In a feasible implementation, the step of preparing the VIP plate includes:

[0018] Placing a core material at the center of the barrier film and placing a getter material around the core material;

[0019] Completely encapsulate the core material and getter using a barrier film;

[0020] The edge of the barrier film is sealed by heat sealing to form the VIP panel body;

[0021] The VIP panel body is subjected to a vacuum treatment by a vacuuming device to obtain the VIP panel.

[0022] In a feasible implementation, the selecting of the VIP plate includes: selecting a VIP plate with no aluminum film on both sides, or selecting a VIP plate with a common yin-yang film.

[0023] In a feasible implementation, the vacuum degree range of the first vacuum treatment and the second vacuum treatment is 0.1-5Pa.

[0024] In a feasible implementation, the felt layer is one or more of rock wool felt, ceramic fiber felt and glass fiber felt.

[0025] In a feasible implementation, the felt layer has a thickness ranging from 3 to 60 mm.

[0026] In a feasible implementation, the insulation bag is an aluminum foil bag or a nylon bag, and the thickness of the insulation bag is in the range of 0.05-0.2 mm.

[0027] In a second aspect, the present application provides a gas leakage-proof vacuum insulation panel, comprising: a VIP panel, a felt layer and an aluminum foil bag;

[0028] The felt layer has two layers and is adhered to the upper and lower surfaces of the VIP board;

[0029] The aluminum foil bag is sleeved on the outside of the felt layer and is attached to the felt layer.

[0030] In a feasible implementation, the VIP panel comprises: a core material, a barrier film and a getter;

[0031] The barrier film is wrapped around the outside of the core material, and the getter is arranged between the core material and the barrier film.

[0032] The present application provides a leak-proof vacuum insulation panel and a preparation method thereof, which is made of a normal VIP panel as the core material, adhered with a felt layer on the surface, and then placed in an insulation bag for vacuuming. Since the felt layer and the insulation bag themselves have a certain insulation effect, the VIP panel prepared in this way has a greatly improved thermal insulation performance compared to the ordinary VIP panel of the same material. At the same time, this method adds one vacuuming, and the ordinary VIP panel placed in the outer aluminum foil bag is further solidified, which plays a major role in thermal insulation. Even if the outer insulation bag is damaged, the internal VIP panel can still have a vacuum insulation function, which can prevent the internal VIP panel from leaking and greatly extend the service life of the VIP panel. The VIP panel prepared in this way is also more suitable for use in environments with high requirements for thermal insulation performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the embodiments are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0034] Figure 1 A schematic flow chart of a method for preparing a gas leakage-proof vacuum insulation panel provided by an exemplary embodiment of the present application;

[0035] Figure 2 A schematic structural diagram of a gas leakage-proof vacuum insulation panel provided by an exemplary embodiment of the present application;

[0036] Figure 3 for Figure 2 Cross-sectional view of .

[0037] Description of reference numerals:

[0038] 10-VIP board; 20-felt layer; 30-isolation bag. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Vacuum insulation panel (VIP panel) is a new type of thermal insulation material with high efficiency, energy saving and light structure. It is widely used in household appliances such as refrigerators and cabinets. However, in actual use, vacuum insulation panels are easily damaged and leaked by hard substances or external forces, which seriously affects the insulation performance and service life of VIP panels. Secondly, traditional VIP panels have certain defects in the folding method of the film material, which may also cause gas leakage. During the packaging process of VIP panels, the edges of the film material are often not completely wrapped, which greatly reduces the thermal bridge effect and affects the thermal insulation capacity of the VIP panels.

[0041] In order to solve the above problems, the present application provides a method for preparing a gas leakage-proof vacuum insulation panel. Figure 1 As shown, the steps include:

[0042] S100: Select a VIP board or prepare a VIP board.

[0043] The preparation process of VIP panels includes selecting appropriate core materials, barrier films, getters and possible support structures. These materials are assembled and packaged according to the predetermined process, and are initially vacuumed in a vacuum environment to form a preliminary VIP panel structure. The VIP panel provides a basic VIP panel for subsequent anti-leakage treatment to ensure that it has basic insulation performance and structural stability.

[0044] S200: Evenly adhere the felt layer to the surface of the VIP board.

[0045] Use a specific adhesive or hot pressing technology to evenly adhere one or more layers of felt to the surface of the VIP panel. The felt layer should have a certain thickness and density to ensure that it can effectively protect the VIP panel from the doping of hard substances and the wear and scratching of external forces. Increase the surface strength and wear resistance of the VIP panel and reduce the risk of breakage and air leakage caused by external factors. At the same time, the felt layer can also provide a certain buffering effect to further protect the structural integrity of the VIP panel.

[0046] S300: Put the VIP board with the felt layer adhered thereto into an isolation bag as a whole.

[0047] Place the VIP panel protected by the felt layer in a well-sealed insulation bag. The insulation bag should have a certain thickness and strength to ensure that it can effectively isolate the outside air and moisture, while preventing the VIP panel from being physically damaged during transportation and storage. Provide an additional layer of protection for the VIP panel to further reduce the risk of air leakage. The sealing of the insulation bag can also effectively prevent the intrusion of outside air and moisture, thereby extending the service life of the VIP panel.

[0048] S400: placing the insulation bag in a vacuum chamber for secondary vacuuming to obtain a leak-proof vacuum insulation panel.

[0049] The insulation bag with the VIP panel is placed in a vacuum chamber and a second vacuum treatment is performed using a vacuum pump. During the vacuuming process, the insulation bag should be well sealed to avoid gas leakage. At the same time, additional getters can be added as needed to further absorb the residual gas inside the insulation bag. The second vacuum treatment further reduces the gas pressure inside the VIP panel and improves its thermal insulation performance. At the same time, the sealing of the insulation bag and the effect of the getter can also effectively prevent gas leakage, thereby ensuring the long-term stability and service life of the VIP panel.

[0050] S500: Perform air tightness test and performance test on vacuum insulation panels. Use professional testing equipment and test methods to perform air tightness test and performance test on the VIP panels processed in the above steps. Air tightness test can ensure that the gas pressure inside the VIP panel remains within the predetermined range, while performance test can evaluate key indicators such as insulation performance and mechanical strength of the VIP panel. Ensure that the quality of the VIP panel meets the predetermined standards and requirements. Through air tightness test and performance test, potential leakage problems and performance defects can be discovered and dealt with in a timely manner, thereby ensuring the reliability and stability of the VIP panel.

[0051] The method for preparing the air leakage-proof vacuum insulation panel proposed in this application improves the surface strength and wear resistance of the VIP panel by adhering the felt layer, reducing the risk of damage and air leakage caused by external factors. Secondly, through the packaging of the insulation bag and the secondary vacuum treatment, an additional protective layer and gas insulation layer are provided for the VIP panel, further reducing the risk of air leakage and improving the insulation performance. The air tightness detection and performance testing ensure the quality and reliability of the VIP panel, thereby extending its service life and improving the application effect.

[0052] In some embodiments of the present application, the step of uniformly adhering the felt layer to the surface of the VIP panel further comprises:

[0053] S210: Use direct coating to evenly apply glue on the back of the felt layer.

[0054] In this step, select glue suitable for bonding between the felt layer and the VIP board, and ensure that it has good adhesion, temperature resistance and aging resistance. Use professional glue coating equipment or hand tools (such as brushes, rollers, etc.) to evenly apply glue to the back of the felt layer in a direct coating manner. During the gluing process, pay attention to controlling the thickness and uniformity of the glue to avoid excessive glue from penetrating into the fibers of the felt layer and affecting the bonding effect. At the same time, ensure that the glue covers the entire back of the felt layer without leaving any blank areas.

[0055] Glue is used as the adhesive between the felt layer and the VIP board. Its uniform coating can ensure the consistent bonding strength between the two and improve the overall stability and durability. The direct coating method can more accurately control the amount and distribution of glue, which helps to achieve a good bonding effect.

[0056] S220: Place the felt layer coated with glue on the surface of the VIP board, and use a fixture to press the felt layer to fit the VIP board.

[0057] Place the glued felt layer on the surface of the VIP board to ensure alignment and fit between the two. Then, use fixtures (such as pressing plates, clamps, etc.) to press the felt layer to make it fit tightly with the VIP board. During the pressing process, pay attention to controlling the strength and uniformity to avoid excessive pressing that may cause deformation or damage to the VIP board.

[0058] The use of fixtures can ensure the close fit between the felt layer and the VIP board, eliminate bubbles and gaps between the two, and improve the bonding quality and stability. At the same time, the fixture can also provide a certain pressure holding time, so that the glue can better penetrate into the felt layer fiber and the VIP board surface during the curing process, enhancing the bonding effect.

[0059] S230: The VIP board with the felt layer attached is left to cure for 24 hours.

[0060] After the felt layer and the VIP board are bonded, the entire VIP board is placed in a dry, ventilated environment for curing. The curing time is usually 24 hours, but the specific time may be adjusted depending on factors such as the type of glue, ambient temperature and humidity. During the curing process, avoid any form of movement or operation of the VIP board to avoid affecting the bonding effect. The static curing time is to allow the glue to fully dry and cure to achieve the best bonding strength. During the curing process, the chemical components in the glue will undergo a series of chemical reactions to form a strong bonding interface.

[0061] S240: Quality inspection of the felt layer and VIP board after bonding, and no debonding or delamination after high and low temperature tests.

[0062] After curing, the bonded felt layer and VIP board are quality inspected. Check whether the bonding interface is flat, free of bubbles and voids; check whether the felt layer is firmly adhered to the surface of the VIP board without loosening or falling off. At the same time, high and low temperature tests are also required. The VIP board is placed in a high and low temperature environment for cyclic testing to check the stability and durability of the bonding interface under high and low temperature conditions. During the test, observe and record whether debonding and delamination occur.

[0063] Quality inspection can timely discover and deal with potential bonding problems, such as bubbles, gaps, looseness, etc., while high and low temperature tests can simulate the working environment of VIP panels in actual applications and test the stability and durability of their bonding interfaces under high and low temperature conditions. These tests help ensure that VIP panels will not debond or delaminate during long-term use, thereby extending their service life and improving application effects.

[0064] In some embodiments of the present application, the steps of preparing the VIP plate include:

[0065] S110: placing a core material at the center of the barrier film, and placing a getter around the core material.

[0066] The core material is the core component of the VIP board. Usually, materials with low thermal conductivity and good supporting performance such as glass fiber and foam plastic are selected. The barrier film is used to wrap the core material and the getter to form a vacuum environment. Usually, materials with low air permeability and high strength are selected, such as polyimide film. Place the core material flatly in the center of the barrier film to ensure that there are no bubbles and gaps between the core material and the barrier film. Place the getter evenly around the core material. The getter is used to absorb water vapor and residual air inside the vacuum insulation panel. Usually, materials with high adsorption performance, such as silica, are selected.

[0067] The core material provides structural support and limits the movement space of residual gas molecules, thereby preventing gas convection and conducting heat. The barrier film is used to wrap the core material and getter to form a vacuum environment and reduce heat conduction and heat radiation. The getter absorbs water vapor and residual air inside the vacuum insulation panel, increases the vacuum degree, and further reduces the thermal conductivity.

[0068] S120: Use barrier film to completely encapsulate the core material and getter.

[0069] Fold the four sides of the barrier film toward the center to ensure that the core material and getter are completely wrapped. During the folding process, pay attention to keeping the film flat and tight to avoid bubbles and gaps. The barrier film can form a preliminary vacuum environment to prepare for the subsequent vacuum treatment. Ensure that the core material and getter remain stable in the vacuum environment to avoid movement or deformation during the vacuum process.

[0070] S130: The edge of the barrier film is sealed by heat sealing to form a VIP board body.

[0071] Heat and press the edge of the barrier film using heat sealing equipment to form a sealed edge. During the heat sealing process, pay attention to controlling the heating temperature and pressing pressure to ensure the firmness and flatness of the sealed edge. This step forms a closed vacuum environment to ensure the vacuum degree inside the VIP panel, thereby improving the overall strength and stability of the VIP panel and facilitating subsequent processing and use.

[0072] S140: vacuumizing the VIP board body by vacuuming equipment to obtain the VIP board.

[0073] Place the VIP panel body into the vacuum equipment, connect the vacuum pipe, start the vacuum equipment, and vacuum the VIP panel body. During the vacuum process, pay attention to controlling the vacuum speed and vacuum degree to ensure that the pressure inside the VIP panel can meet the design requirements. After the vacuum is completed, turn off the vacuum equipment and take out the VIP panel.

[0074] This step further reduces the pressure inside the VIP panel and increases the vacuum degree, which can reduce heat conduction and heat radiation inside the VIP panel, improve thermal insulation performance, provide a stable vacuum environment for subsequent applications of the VIP panel, and ensure long-term thermal insulation effect.

[0075] In some embodiments of the present application, selecting a VIP board includes: selecting a double-sided VIP board without aluminum film, or selecting a VIP board with an ordinary yin-yang film style; the vacuum degree range of the first vacuum treatment and the second vacuum treatment is 0.1-5Pa; the felt is one or more of rock wool felt, ceramic fiber felt and glass fiber felt; the felt layer thickness range is 3mm-60mm; the insulation bag is an aluminum foil bag or a nylon bag, and the thickness range of the insulation bag is 0.05-0.2mm.

[0076] Specifically, the present application further provides implementation examples to illustrate the method for preparing a leakage-proof vacuum insulation panel.

[0077] Example 1

[0078] The core material is an ordinary double-sided VIP board without aluminum film. Rock wool felt is adhered to its surface with a thickness of 10mm. It is then placed in another layer of aluminum foil bag with a thickness of 0.1mm and then vacuumed for the second time.

[0079] Example 2

[0080] The core material is a common double-sided VIP board without aluminum film. Glass fiber felt is adhered to its surface with a thickness of 10mm. It is then placed in another layer of aluminum foil bag with a thickness of 0.06mm and then vacuumed for a second time.

[0081] Example 3

[0082] The VIP board with ordinary yin-yang membrane style is used as the core material, and rock wool felt is adhered on its surface with a thickness of 5mm. It is then placed in another layer of aluminum foil bag with a thickness of 0.1mm, and then vacuumed for the second time.

[0083] Example 4

[0084] The VIP board with ordinary yin-yang membrane style is used as the core material, and ceramic fiber felt is adhered on its surface with a thickness of 10mm. It is then placed in another layer of aluminum foil bag with a thickness of 0.1mm, and then vacuumed for the second time.

[0085] Example 5

[0086] The VIP board with ordinary yin-yang membrane style is used as the core material, and ceramic fiber felt is adhered on its surface with a thickness of 10mm. It is then placed in another layer of aluminum foil bag with a thickness of 0.06mm, and then vacuumed for the second time.

[0087] Example 6

[0088] The VIP board with ordinary yin-yang membrane style is used as the core material, and rock wool felt is adhered on its surface with a thickness of 5mm. It is then placed in another layer of nylon bag with a thickness of 0.1mm, and then vacuumed for the second time.

[0089] Example 7

[0090] The VIP board with ordinary yin-yang membrane style is used as the core material, and rock wool felt is adhered on its surface with a thickness of 10mm. It is then placed in another layer of nylon bag with a thickness of 0.1mm, and then vacuumed for the second time.

[0091] Another aspect of the present application provides a vacuum insulation panel that prevents air leakage, referring to Figure 2 and Figure 3 As shown, it includes: a VIP board 10, a felt layer 20 and an insulation bag 30; the felt layer 20 has two layers and is adhered to the upper and lower surfaces of the VIP board 10; the insulation bag 30 is sleeved on the outside of the felt layer 20 and is bonded to the felt layer 20.

[0092] Specifically, the VIP panel 10 effectively reduces heat conduction and convection through its internal vacuum or low pressure environment, and possible insulation materials (such as core materials), thereby achieving efficient insulation effect. The felt layer 20 can provide additional protection and cushioning to prevent the VIP panel 10 from being damaged during transportation or installation. At the same time, it can also enhance the overall structural stability of the VIP panel 10, making it more durable. The insulation bag 30 is used to form a sealed environment to prevent external gas or moisture from entering the VIP panel 10, thereby maintaining its internal vacuum or low pressure state and ensuring the durability of the insulation effect.

[0093] In some embodiments of the present application, the VIP panel 10 includes: a core material, a barrier film and a getter; the barrier film is wrapped around the outside of the core material, and the getter is arranged between the core material and the barrier film.

[0094] Specifically, the core material, as the main body of the VIP panel 10, achieves a basic thermal insulation effect through its physical properties (such as low thermal conductivity). The barrier film can effectively prevent external gas or moisture from entering the VIP panel 10, thereby maintaining its internal thermal insulation performance. The getter is used to absorb any residual gas that may exist during the manufacturing process of the VIP panel 10 or during use, ensuring a vacuum or low pressure state inside the VIP panel 10, thereby further improving its thermal insulation effect.

[0095] From the above content, it can be known that the present application provides a leak-proof vacuum insulation panel and its preparation method, which is made of a normal ordinary style VIP panel as the core material, adhered with a felt layer on the surface, and then placed in an insulation bag for vacuuming. Since the felt layer and the insulation bag themselves have a certain insulation effect, the VIP panel prepared in this way has a greatly improved thermal insulation performance compared with the ordinary VIP panel of the same material. At the same time, this method adds one vacuuming, and the ordinary VIP panel packed in the outer aluminum foil bag is further solidified, which plays a major role in thermal insulation. Even if the outer insulation bag is damaged, the internal VIP panel can still have a vacuum insulation function, which can prevent the internal VIP panel from leaking, and greatly extend the service life of the VIP panel. The VIP panel prepared in this way is also more suitable for use in environments with high requirements for thermal insulation performance.

[0096] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the disclosure herein. This application is intended to cover any variations, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

Claims

1. A method for preparing a gas leakage-proof vacuum insulation panel, characterized in that: Includes steps: Select VIP board or prepare VIP board; Evenly adhering the felt layer to the surface of the VIP panel; Putting the VIP board with the felt layer adhered thereto into an isolation bag as a whole; The insulating bag is placed in a vacuum chamber for secondary vacuum treatment to obtain a leak-proof vacuum insulation panel; The vacuum insulation panel is subjected to air tightness testing and performance testing.

2. The method for preparing a gas leakage-proof vacuum insulation panel according to claim 1, characterized in that: The step of uniformly adhering the felt layer to the surface of the VIP panel also includes: The glue is evenly applied on the back of the felt layer by direct coating; Placing the felt layer coated with glue on the surface of the VIP board, and using a fixture to press the felt layer to fit the VIP board; The VIP board with the felt layer attached is left to cure for 24 hours; The felt layer and the VIP board after bonding were quality inspected, and no debonding or delamination was found after high and low temperature tests.

3. The method for preparing a gas leakage-proof vacuum insulation panel according to claim 1, characterized in that: The steps of preparing the VIP plate include: Placing a core material at the center of the barrier film and placing a getter material around the core material; Completely encapsulate the core material and getter using a barrier film; The edge of the barrier film is sealed by heat sealing to form the VIP panel body; The VIP panel body is subjected to a vacuum treatment by a vacuuming device to obtain the VIP panel.

4. The method for preparing a gas leakage-proof vacuum insulation panel according to claim 1, characterized in that: The selecting of the VIP board includes: selecting a VIP board with no aluminum film on both sides, or selecting a VIP board with a common yin-yang film.

5. The method for preparing a gas leakage-proof vacuum insulation panel according to claim 3, characterized in that: The vacuum degree range of the first vacuum treatment and the second vacuum treatment is 0.1-5Pa.

6. The method for preparing a gas leakage-proof vacuum insulation panel according to claim 1, characterized in that: The felt layer is one or more of rock wool felt, ceramic fiber felt and glass fiber felt.

7. The method for preparing a gas leakage-proof vacuum insulation panel according to claim 1, characterized in that: The thickness of the felt layer ranges from 3 to 60 mm.

8. The method for preparing a gas leakage-proof vacuum insulation panel according to claim 1, characterized in that: The insulation bag is an aluminum foil bag or a nylon bag, and the thickness of the insulation bag ranges from 0.05 to 0.2 mm.

9. A gas leakage-proof vacuum insulation panel, characterized in that: include: VIP board (10), felt layer (20) and aluminum foil bag (30); The felt layer (20) has two layers and is adhered to the upper and lower surfaces of the VIP board (10); The aluminum foil bag (30) is sleeved on the outside of the felt layer (20) and is in contact with the felt layer (20).

10. The air leakage-proof vacuum insulation panel according to claim 9, characterized in that: The VIP panel (10) comprises: a core material, a barrier film and a getter; The barrier film is wrapped around the outside of the core material, and the getter is arranged between the core material and the barrier film.

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