A vacuum insulation composite thermal insulation board capable of being cut and punched

Abstract

The present invention discloses a cuttable and perforated vacuum insulation composite thermal insulation panel, belonging to the technical field of thermal insulation panels, comprising a first vacuum insulation panel and a second vacuum insulation panel whose panel surfaces are stacked against each other; the first vacuum insulation panel and the second vacuum insulation panel both comprise a plurality of vacuum modules arranged in a rectangular array along the panel surface direction, and the spacing seams between the vacuum modules of the first vacuum insulation panel and the spacing seams between the vacuum modules of the second vacuum insulation panel are staggered in the panel thickness direction. The cuttable and perforated vacuum insulation composite thermal insulation panel provided by the present invention is stacked after the spacing seams of the first vacuum insulation panel and the second vacuum insulation panel are staggered, thereby blocking the heat conduction path of the spacing seam portion through the two insulation panels in a straight line, thereby reducing the thermal conductivity coefficient of the spacing seam portion; and by arranging thermal insulation strips in the vacuum modules corresponding to the spacing seam portion to increase the insulation thickness of the spacing seam portion, the overall thermal insulation performance of the composite thermal insulation panel is ensured.

Description

Technical Field

[0001] The invention relates to a vacuum insulation composite thermal insulation board capable of being cut and punched, belonging to the technical field of thermal insulation boards. Background Art

[0002] Vacuum insulation panels (VIPs) are a type of vacuum insulation material that effectively prevents heat transfer caused by air convection. During production, a core material with extremely low thermal conductivity is encapsulated in a gas-barrier film bag and then vacuum-sealed. This reduces the thermal conductivity of VIPs to 1 / 10 of that of traditional insulation materials. Insulated wall panels made with VIPs exhibit significantly lower thermal conductivity and are thinner. The application of VIPs requires ensuring that the vacuum seal remains intact. However, on-site installation of VIPs requires the installation of anchor bolts and through-ribs. Traditional VIPs have a large vacuum seal area. Punching holes into the panels can disrupt the overall vacuum seal, compromising their insulating properties. Therefore, preventing anchor bolts and through-ribs from disrupting the vacuum seal is a pressing issue to ensure the panels maintain their proper insulation performance.

[0003] The prior art discloses some vacuum insulation panels for use in walls. Although the damage to the vacuum degree of the entire panel caused by punching or cutting can be reduced to a certain extent by dividing the entire panel into multiple independent small-sized units, the structural design of the existing vacuum insulation panels of this type to achieve the division between the small-sized units is unreasonable. The gaps between the small-sized units are usually filled with ordinary materials, resulting in the gaps not having vacuum insulation performance, which in turn affects the thermal insulation performance of the entire panel and prevents the thermal insulation performance of the vacuum insulation panel from being fully utilized.

[0004] It should be noted that the above content falls within the technical knowledge of the inventor and does not necessarily constitute prior art. Summary of the Invention

[0005] In order to solve the problems existing in the prior art, the present invention provides a vacuum insulation composite thermal insulation board that can be cut and punched, has low thermal conductivity, and is easy to produce and process.

[0006] The present invention achieves the above-mentioned purpose by adopting the following technical solutions:

[0007] A vacuum insulation composite thermal insulation panel that can be cut and perforated, comprising a first vacuum insulation panel and a second vacuum insulation panel whose panels are stacked against each other;

[0008] The first vacuum insulation panel and the second vacuum insulation panel each comprise a plurality of vacuum modules arranged in a rectangular array and spaced apart along the panel surface, each vacuum module being composed of a core material unit vacuum-sealed between two layers of gas-blocking membranes;

[0009] The spacing gaps between the vacuum modules of the first vacuum insulation panel and the spacing gaps between the vacuum modules of the second vacuum insulation panel are staggered in the panel thickness direction.

[0010] In a preferred embodiment of the present invention, a thermal insulation strip is laid on the outer surface of each core material unit of the first vacuum insulation panel. The position of the thermal insulation strip is aligned with the spacing gap between the vacuum modules of the second vacuum insulation panel in the thickness direction. The thermal insulation strip and the corresponding core material unit are vacuum-sealed in the vacuum module.

[0011] Furthermore, an insulation strip is laid on the outer panel surface of each core material unit of the second vacuum insulation panel. The position of the insulation strip is opposite to the spacing gap between the vacuum modules of the first vacuum insulation panel in the panel thickness direction. The insulation strip and the corresponding core material unit are vacuum-sealed in the vacuum module.

[0012] In one embodiment of the present invention, the first vacuum insulation panel and the second vacuum insulation panel are formed by simultaneously wrapping all core material units of each of the panels between two layers of gas barrier films and then vacuum-sealing them. The two layers of gas barrier films are sealed at the edges and at the corresponding spacing seams by hot-melt pressing.

[0013] In another embodiment provided by the present invention, each core material unit constituting the first vacuum insulation panel and each core material unit constituting the second vacuum insulation panel are independently wrapped with an inner barrier air bag and then vacuum-sealed, and each inner barrier air bag is formed by two layers of air barrier film sealed at the edge.

[0014] Furthermore, the first vacuum insulation panel and the second vacuum insulation panel are stacked against each other and then wrapped in the same outer air-blocking bag, which is then evacuated and sealed by heat-melting and pressing.

[0015] Preferably, each vacuum module of the first vacuum insulation panel and each vacuum module of the second vacuum insulation panel are staggered along a diagonal line in a direction parallel to the panel surface.

[0016] Preferably, the outer surfaces of the first vacuum insulation panel and the second vacuum insulation panel facing away from each other are further provided with a first protective layer and a second protective layer in sequence, the first protective layer is embedded with a steel mesh, and the second protective layer is embedded with an alkali-resistant glass fiber mesh cloth.

[0017] Preferably, the first protective layer is formed by solidifying polystyrene particle insulation mortar, and the second protective layer is formed by solidifying polymer mortar.

[0018] The beneficial effects of this application include but are not limited to:

[0019] The present invention provides a cuttable and perforated vacuum insulation composite thermal insulation panel. The first vacuum insulation panel and the second vacuum insulation panel are both formed by an array of multiple vacuum modules. When punching or cutting, only the vacuum degree of the corresponding vacuum module is destroyed without affecting the vacuum degree of other vacuum modules, thereby reducing the impact on the overall thermal conductivity coefficient of the entire insulation panel and ensuring the thermal insulation performance of the insulation panel.

[0020] The cuttable and perforated vacuum insulation composite thermal insulation board provided by the present invention is stacked after the interval seams of the first vacuum insulation board and the second vacuum insulation board are staggered, thereby blocking the heat conduction path of heat from the interval seam portion to pass through the two insulation boards in a straight line, thereby reducing the thermal conductivity coefficient of the interval seam portion; and by arranging thermal insulation strips in the vacuum modules corresponding to the interval seam portion, the thermal insulation thickness of the interval seam portion is increased, the thermal conductivity coefficient of the interval seam portion is further reduced, and the overall thermal insulation performance of the composite thermal insulation board is guaranteed.

[0021] The cuttable and perforated vacuum insulation composite thermal insulation panel provided by the present invention forms an uneven surface on the panel surface after thermal insulation strips are provided at corresponding positions of the first vacuum insulation panel and the second vacuum insulation panel, making it easier to apply slurry, thereby improving the composite strength between the panel surface and the protective layer or wall.

[0022] The cuttable and perforated vacuum insulation composite thermal insulation panel provided by the present invention is coated with a first protective layer and a second protective layer to form a first vacuum insulation panel and a second vacuum insulation panel, and a steel mesh is embedded in the first protective layer and an alkali-resistant glass fiber mesh cloth is embedded in the second protective layer, thereby ensuring the strength of the composite thermal insulation panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0024] Figure 1 A schematic diagram of one structure of the cuttable and perforated vacuum insulation composite thermal insulation board provided in Example 1;

[0025] Figure 2 for Figure 1 Schematic diagram when setting insulation strips;

[0026] Figure 3 Schematic diagram of the first vacuum insulation panel in Example 4;

[0027] Figure 4 Schematic diagram of the second vacuum insulation panel in Example 4;

[0028] Figure 5 is a cross-sectional view of a first vacuum insulation panel and a second vacuum insulation panel stacked together;

[0029] Figure 6 A side view of a first vacuum insulation panel and a second vacuum insulation panel stacked together;

[0030] Figure 7 Another structural schematic diagram of the cuttable and perforated vacuum insulation composite thermal insulation board provided in Example 1;

[0031] Figure 8 for Figure 7 Schematic diagram when setting insulation strips;

[0032] Figure 9 Schematic diagram of the vacuum module of the first vacuum insulation panel in Example 5;

[0033] Figure 10 Schematic diagram of the vacuum module of the second vacuum insulation panel in Example 5;

[0034] Figure 11 This is a schematic structural diagram of the vacuum insulation composite thermal insulation board provided in Example 5 when a first protective layer and a second protective layer are provided on the outer side;

[0035] Figure 12 A photograph of one structure of the cuttable and perforated vacuum insulation composite thermal insulation board provided in Example 1 of the present invention;

[0036] Figure 13 This is a photo of the first and second protective layers provided on the outer sides of the cuttable and perforated vacuum insulation composite thermal insulation board provided in Example 5;

[0037] In the figure, 100, first vacuum insulation panel; 200, second vacuum insulation panel; 300, vacuum module; 310, core material unit; 320, gas barrier film; 400, insulation strip; 500, outer gas barrier bag; 600, first protective layer; 610, steel wire mesh; 700, second protective layer; 710, alkali-resistant glass fiber mesh cloth. DETAILED DESCRIPTION

[0038] In order to clearly illustrate the technical features of this solution, the present invention is described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0039] It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0040] Example 1:

[0041] like Figure 1 and Figure 8As shown in FIG, the cuttable and perforated vacuum insulation composite thermal insulation panel provided by the present invention includes a first vacuum insulation panel 100 and a second vacuum insulation panel 200, the panel surfaces of which are stacked against each other. The solid-line box in the figure shows the vacuum module of the first vacuum insulation panel 100, and the dashed-line box shows the vacuum module of the second vacuum insulation panel 200.

[0042] The first vacuum insulation panel 100 and the second vacuum insulation panel 200 each include a plurality of vacuum modules 300 arranged in a rectangular array and spaced apart along the panel surface. Each vacuum module 300 is composed of a core material unit 310 that is vacuum-sealed between two layers of gas-blocking membranes 320. This arrangement allows the first vacuum insulation panel 100 and the second vacuum insulation panel 200 to be composed of individual vacuum modules 300. Each vacuum module 300 has a very low thermal conductivity. Compared to conventional insulation panels, the thermal insulation performance of the vacuum insulation panels provided by the present invention is significantly improved. Furthermore, because each vacuum module 300 is independently vacuum-sealed, subsequent drilling or cutting of the insulation panel will only disrupt the vacuum level of the corresponding vacuum module 300 without affecting the vacuum levels of other vacuum modules 300. This reduces the impact on the overall thermal conductivity of the entire insulation panel and ensures the thermal insulation performance of the insulation panel.

[0043] After the vacuum modules 300 are arranged in an array, the gaps between adjacent vacuum modules 300 are not filled or covered with thermal insulation materials. In the thickness direction of the board, heat is easily conducted along the gaps, resulting in high thermal conductivity at the gaps, forming thermal bridges, and thus affecting the overall thermal insulation performance of the insulation board. Figure 1 and Figure 8 As shown in , the present invention staggers the gaps between the vacuum modules 300 of the first vacuum insulation panel 100 and the gaps between the vacuum modules 300 of the second vacuum insulation panel 200 in the thickness direction. This staggers the gaps between the two insulation panels, so that the core material units 310 of the first vacuum insulation panel 100 press directly against the gaps between the second vacuum insulation panel 200, and vice versa. Therefore, in the thickness direction, heat transferred along the gaps between the first vacuum insulation panel 100 will be blocked by the second vacuum insulation panel 200, and heat transferred along the gaps between the second vacuum insulation panel 200 will be blocked by the first vacuum insulation panel 100, thus preventing the thermal bridge effect.

[0044] Example 2:

[0045] Although the gaps between the two insulation boards can be blocked by each other, the effective insulation board thickness at the gap position is smaller than that at other parts. In order to solve this problem, Figure 2 and Figure 9As shown in , this embodiment makes the following improvements based on embodiment 1:

[0046] An insulation strip 400 is installed on the outer surface of each core unit 310 of the first vacuum insulation panel 100. These strips 400 are positioned in the thickness direction of the panel, aligned with the gaps between the vacuum modules 300 of the second vacuum insulation panel 200. Together with the corresponding core unit 310, these strips 400 are vacuum-sealed within the vacuum modules 300. The installation of these strips increases the effective thickness of the insulation panel at the gaps corresponding to the second vacuum insulation panel 200, further reducing the thermal conductivity of the insulation panel at these gaps. Furthermore, the installation of these strips 400 creates an uneven surface on the first vacuum insulation panel 100, making it easier for grouting to adhere to the panel and improving the composite strength between the vacuum insulation panel and the protective layer or wall.

[0047] Typically, the core units 310 in the first and second vacuum insulation panels 100 and 200 are both 1.5 cm thick, and the insulation strips 400 are 1.5 cm thick. The stacked core units 310 create a total thickness of 3 cm. The gaps between the core units 310 and insulation strips 400 also create a 3 cm thickness, ensuring consistent effective insulation thickness throughout.

[0048] Example 3:

[0049] In this embodiment, based on Example 2, a thermal insulation strip 400 is further provided on the outer surface of each core material unit 310 of the second vacuum insulation panel 200. The thermal insulation strip 400 is positioned in the thickness direction of the panel, directly corresponding to the gaps between the vacuum modules 300 of the first vacuum insulation panel 100. The thermal insulation strip 400, together with the corresponding core material unit 310, is vacuum-sealed within the vacuum module 300. This arrangement increases the effective insulation panel thickness corresponding to the gaps in the second vacuum insulation panel in the thickness direction, further reducing the thermal conductivity of the insulation panel at the gaps in the first vacuum insulation panel 100.

[0050] The size of the heat insulating strip 400 only needs to be slightly larger than the width of the spacing gap. Usually, the width of the spacing gap is 2 cm, and the width of the heat insulating strip can be 3 cm.

[0051] like Figure 2 and Figure 9 As shown in , after the vacuum modules are arranged in an array, horizontal and vertical gaps will be formed, so horizontal and vertical insulation strips need to be provided to shield and cover the gaps in the corresponding directions.

[0052] Example 4:

[0053] The vacuum modules 300 constituting the first vacuum insulation panel 100 and the vacuum modules 300 constituting the second vacuum insulation panel 200 may be constructed in different ways. Figure 3 and Figure 4 As shown in FIG, in this embodiment, the first vacuum insulation panel 100 ( Figure 3 ) and the second vacuum insulation panel 200 ( Figure 4 ) is formed by simultaneously wrapping all the core material units 310 between two layers of gas barrier film sheets 320 and then vacuum sealing. The two layers of gas barrier film sheets 320 are sealed at the edge parts and the corresponding interval seams by hot melt pressing.

[0054] For example, when producing the first vacuum insulation panel 100, first arrange the core material units 310 on the lower gas barrier film 320, lay the insulation strips 400 on each core material unit 310, and then lay the upper gas barrier film 320. After the two gas barrier film sheets 320 are partially hot-melt pressed and sealed at the edge or the gap between the core material units 310, the air between the gas barrier film sheets 320 and the core material units 310 can be extracted by using a vacuum equipment, and then the remaining edge and gap parts of the two gas barrier film sheets 320 are completely sealed to complete the processing of the first vacuum insulation panel 100. The second vacuum insulation panel 200 can be processed in the same way. Then, as Figure 5 and Figure 6 As shown in FIG, the first vacuum insulation panel 100 and the second vacuum insulation panel 200 are stacked with staggered seams, so that the spaced seams on the first vacuum insulation panel 100 and the second vacuum insulation panel 200 are covered by the corresponding insulation strips. The first vacuum insulation panel 100 and the second vacuum insulation panel 200 provided in this embodiment have a simple structure and are easy to produce.

[0055] Typically, the cuttable and perforated vacuum insulation composite panel provided by the present invention has a size of approximately 300cm x 120cm. During production, six small panels measuring approximately 300cm x 20cm are first processed and then horizontally spliced ​​together to form a large panel measuring 300cm x 120cm. These panels are then combined to form the first vacuum insulation panel 100, the second vacuum insulation panel 200, and the overall cuttable and perforated vacuum insulation composite panel.

[0056] The processing method for each 300cm×20cm small board is as follows: 8cm×8cm core material units 310 are arranged in a 2×30 array between two layers of gas-barrier film sheets 320, and the width of the interval seam between the core material units 310 is 2cm. After the two layers of gas-barrier film sheets 320 are hot-melt pressed at the interval seam between the core material units 310, vacuum is applied, and finally the edges of the two layers of gas-barrier film sheets 320 are hot-melt pressed and sealed.

[0057] Example 5:

[0058] like Figure 9 and Figure 10 As shown in the figure, in this embodiment, each core material unit 310 constituting the first vacuum insulation panel 100 and each core material unit 310 constituting the second vacuum insulation panel 200 are independently wrapped in an inner resistance air bag and then vacuum-sealed, and each inner resistance air bag is formed by two layers of air-blocking film sheets 320 sealed at the edge. Figure 9 and Figure 10 1 and 2 show a vacuum module of the first vacuum insulation panel 100 and a vacuum module of the second vacuum insulation panel 200 .

[0059] For example, when producing the first vacuum insulation panel 100, it is necessary to first produce individual vacuum modules 300. The production method of each vacuum module 300 is as follows: the edges of the two layers of gas barrier film 320 are partially sealed to form an inner air barrier bag, the insulation strip 400 is fixed to the corresponding position of the core material unit 310 and then placed together in the inner air barrier bag, and then the air in the inner air barrier bag, the core material unit 310, and the insulation strip 400 is evacuated, and finally the inner air barrier bag is sealed to form a vacuum module 300. Then, the individual vacuum modules 300 are arranged to reach the size of a large insulation panel, and the individual vacuum modules 300 that make up the first vacuum insulation panel 100 or the second vacuum insulation panel 200 can be further bonded to form a whole or placed in a large air barrier bag and evacuated to form a whole, thereby forming the first vacuum insulation panel 100 and the second vacuum insulation panel 200. The structure of the vacuum module 300 provided in this embodiment requires that each vacuum module 300 be produced separately and then arranged and assembled. The product structure and production process are more complicated than those in Example 4, but the gap width between the vacuum modules is smaller.

[0060] For the above-mentioned embodiments 1-5, after the first vacuum insulation panel 100 and the second vacuum insulation panel 200 are stacked as required to form a vacuum insulation composite thermal insulation panel that can be cut and punched, in order to facilitate transportation and installation, it is preferred that the first vacuum insulation panel 100 and the second vacuum insulation panel 200 are composited and fixed by certain means. For example, adhesive material can be applied on the contact plate surface of the two insulation panels for bonding and fixing, but it is preferred that the first vacuum insulation panel 100 and the second vacuum insulation panel 200 are stacked close together and then wrapped in the same outer air-blocking bag 500 and vacuumed and hot-melt pressed to seal. During the hot-melt pressing process, the outer air-blocking bag and the air-blocking film 320 on the surface of the vacuum module 300 are also composited together by hot-melt pressing, so that the first vacuum insulation panel 100 and the second vacuum insulation panel 200 are composited to form an integral panel. Figure 1 and Figure 7 In the figure, the outer large square box shows the outer air-blocking bag.

[0061] Furthermore, when the first vacuum insulation panel 100 and the second vacuum insulation panel 200 are staggered, it is preferred that each vacuum module 300 of the first vacuum insulation panel 100 and each vacuum module 300 of the second vacuum insulation panel 200 be staggered along a diagonal shift parallel to the panel surface.

[0062] like Figure 11 As shown in , for the above-mentioned embodiments 1-5, a first protective layer and a second protective layer are sequentially provided on the outer panel surfaces of the first vacuum insulation panel and the second vacuum insulation panel facing away from each other. The first protective layer is embedded with a steel mesh, and the second protective layer is embedded with an alkali-resistant glass fiber mesh cloth. The overall strength of the composite insulation board is ensured by the coating of the first protective layer and the second protective layer.

[0063] Furthermore, the first protective layer is formed by solidifying polystyrene particle insulation mortar, and the second protective layer is formed by solidifying polymer mortar.

[0064] It should be noted that in this application, the core unit 310 and gas barrier film 320 of the vacuum module 300 are both made of conventional commercially available materials in the field. For example, the gas barrier film 320 can be made of aluminum foil or glass fiber composite material, and the core unit 310 and thermal insulation strip 400 can be made of a microporous core material filled with fumed silica. Polystyrene particle insulation mortar and polymer mortar are also common commercial products.

[0065] The drawings of the present application show vacuum modules arranged in a 2×4 matrix. In actual application, the number of arrangements can be determined according to the size of the vacuum insulation panels.

[0066] Figure 12 Shown is a photo of a first vacuum insulation panel 100 and a second vacuum insulation panel 200 stacked in the cuttable and perforated vacuum insulation composite thermal insulation panel provided by the present invention; Figure 13 Shown is a photo of the cuttable and perforated vacuum insulation composite thermal insulation board provided by the present invention with a protective layer provided on the outside.

[0067] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0068] In the present invention, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0069] The above specific implementation manner cannot be used as a limitation on the protection scope of the present invention. For those skilled in the art, any replacement, improvement or transformation made to the implementation manner of the present invention falls within the protection scope of the invention.

[0070] Any matters not described in detail in the present invention are well-known technologies to those skilled in the art.

Claims

1. A vacuum insulation composite thermal insulation board that can be cut and punched, characterized in that: It comprises a first vacuum insulation panel and a second vacuum insulation panel whose panels are stacked against each other; The first vacuum insulation panel and the second vacuum insulation panel each comprise a plurality of vacuum modules arranged in a rectangular array and spaced apart along the panel surface, each vacuum module being composed of a core material unit vacuum-sealed between two layers of gas-blocking membranes; The spacing gaps between the vacuum modules of the first vacuum insulation panel and the spacing gaps between the vacuum modules of the second vacuum insulation panel are staggered in the thickness direction of the panel; An insulation strip is laid on the outer surface of each core material unit of the first vacuum insulation panel. The insulation strip is positioned in the thickness direction of the panel to correspond to the spacing gaps between the vacuum modules of the second vacuum insulation panel. The insulation strip and the corresponding core material unit are vacuum-sealed in the vacuum module. An insulation strip is laid on the outer surface of each core material unit of the second vacuum insulation panel. The insulation strip is positioned in the thickness direction of the panel to correspond to the spacing gaps between the vacuum modules of the first vacuum insulation panel. The insulation strip and the corresponding core material unit are vacuum-sealed in the vacuum module. The outer side surfaces of the first vacuum insulation panel and the second vacuum insulation panel facing away from each other are also provided with a first protective layer and a second protective layer in sequence. The first protective layer is formed by solidifying polystyrene particle insulation mortar, and the second protective layer is formed by solidifying polymer mortar.

2. The cuttable and perforated vacuum insulation composite thermal insulation board according to claim 1, characterized in that: The first vacuum insulation panel and the second vacuum insulation panel are formed by simultaneously wrapping all core material units of each between two layers of gas barrier films and then vacuum-sealing. The two layers of gas barrier films are sealed at the edges and corresponding interval seams by hot-melt pressing.

3. The cuttable and perforated vacuum insulation composite thermal insulation board according to claim 1, characterized in that: Each core material unit constituting the first vacuum insulation panel and each core material unit constituting the second vacuum insulation panel is independently wrapped with an inner air-blocking bag and then vacuum-sealed. Each inner air-blocking bag is formed by two layers of air-blocking film sheets sealed at the edge.

4. The cuttable and perforated vacuum insulation composite thermal insulation board according to claim 1, characterized in that: The first vacuum insulation panel and the second vacuum insulation panel are stacked against each other and then wrapped in the same outer air-blocking bag, which is then evacuated and sealed by heat-melting and pressing.

5. The cuttable and perforated vacuum insulation composite thermal insulation board according to claim 1, characterized in that: The vacuum modules of the first vacuum insulation panel and the vacuum modules of the second vacuum insulation panel are staggered along a diagonal line in a direction parallel to the panel surface.

6. The cuttable and perforated vacuum insulation composite thermal insulation board according to claim 1, characterized in that: The first protective layer is embedded with a steel wire mesh, and the second protective layer is embedded with an alkali-resistant glass fiber mesh cloth.

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