Preparation method and application of vacuum insulation panel

Abstract

The invention relates to a preparation method and application of a vacuum heat insulation plate, and belongs to the technical field of heat insulation materials. Comprising the following steps: providing a membrane material and at least one vacuum insulation core material; one side of a vacuum heat insulation core material is attached to the membrane material; in the vacuum environment, the membrane material is also attached to the other face of the vacuum heat insulation core material; and packaging the membrane material around the vacuum heat insulation core material, so that the vacuum heat insulation core material is sealed in a vacuum cavity formed by the membrane material, and the vacuum heat insulation plate is obtained. For a plurality of vacuum heat insulation core materials, each vacuum heat insulation core material needs to be independently bagged and vacuumized in a traditional scheme, but according to the vacuum heat insulation core material packaging method, a film material is not made into a bag, and after one side of the vacuum heat insulation core material is attached to the film material, the other side of the vacuum heat insulation core material is directly attached to the film material and packaged in a vacuum environment; therefore, operation such as film material bag making, vacuum heat insulation core material bagging and vacuumizing is not needed, and the steps are simpler.

Description

Technical Field

[0001] This invention belongs to the field of thermal insulation materials technology, specifically relating to a method for preparing and applying a vacuum insulation panel. Background Technology

[0002] Thermal insulation layers are materials with heat-insulating properties, used to improve the performance of refrigeration or insulation devices. The thermal insulation performance of the insulation layer is a significant factor affecting the actual power consumption of a refrigeration device, while its thickness is a key factor influencing the effective space of the device. The cost and processing efficiency of the insulation layer are also crucial to the product's cost and efficiency. VIP panels (Vacuum Insulation Panels) are a high-end type of insulation layer, characterized by low thermal conductivity and excellent insulation performance. The manufacturing process of VIP panels typically includes the following steps: producing and drying the vacuum insulation core material; producing the membrane material and bagging it; pre-packing the dried vacuum insulation core material in bags; vacuum sealing; and edge binding. The entire process is quite complex. Summary of the Invention

[0003] The embodiments of the present invention at least partially solve the technical problem of complex manufacturing processes of vacuum insulation boards in related technologies. To this end, the embodiments of the present invention provide a method for preparing and applying a vacuum insulation board.

[0004] In a first aspect, embodiments of this application provide a method for preparing a vacuum insulation panel, the method comprising the following steps:

[0005] We provide membrane materials and vacuum insulation core materials;

[0006] At least one side of a vacuum insulation core material is attached to the membrane material;

[0007] In a vacuum environment, the membrane material is also attached to the other side of the at least one vacuum insulation core material;

[0008] The vacuum insulation core material is encapsulated with a membrane material, thereby sealing the vacuum insulation core material in the vacuum cavity formed by the membrane material to obtain the vacuum insulation panel.

[0009] As can be seen from this technical solution, for multiple vacuum insulation core materials, the traditional method requires each vacuum insulation core material to be individually bagged and vacuum-sealed. However, this application does not bag the film material; instead, after attaching the film material to one side of the vacuum insulation core material, the other side is directly attached to the film material and sealed in a vacuum environment. This eliminates the need for bagging, bagging, and vacuuming operations, simplifying the process. This, to a certain extent, solves the technical problem of complex manufacturing processes for vacuum insulation boards. Furthermore, compared to traditional bagging, attaching the film material to one side of the vacuum insulation core material makes it easier to control the relative position of the vacuum insulation core material and the film material, thus facilitating the simultaneous attachment of multiple vacuum insulation core materials. Therefore, implementing this application also facilitates the simultaneous sealing of multiple vacuum insulation core materials.

[0010] In some embodiments, attaching one side of at least one vacuum insulation core material to the membrane material includes the following steps:

[0011] A first adhesive is applied to one side of the vacuum insulation core material, or to a film material to be bonded to one side of the vacuum insulation core material.

[0012] The membrane material is bonded to one side of the vacuum insulation core material using a pre-applied first adhesive.

[0013] In some embodiments, attaching one side of at least one vacuum insulation core material to the membrane material includes the following steps:

[0014] The membrane material to be bonded to one side of the at least one vacuum insulation core material is pretreated to form grooves on the membrane material that are adapted to the shape of each of the vacuum insulation core materials.

[0015] Each of the vacuum insulation core materials is fitted into a groove of a suitable shape.

[0016] In some implementations, the pretreatment is performed by hot pressing.

[0017] In some embodiments, the number of vacuum insulation core materials is at least two, and after encapsulating all the vacuum insulation core materials with a membrane, the method for preparing the vacuum insulation panel further includes the following steps:

[0018] The membrane material connecting different vacuum insulation core materials is cut to form at least two vacuum insulation panels.

[0019] In some implementations, the encapsulation is carried out in the following manner:

[0020] The membrane material surrounding the vacuum insulation core is bonded together using a second adhesive.

[0021] In some embodiments, the second adhesive is a hot melt adhesive, and the encapsulation is implemented in the following manner:

[0022] The membrane material is subjected to hot pressing treatment, which causes the second adhesive to melt and bond to the membrane material surrounding the vacuum insulation core material.

[0023] In some embodiments, the membrane material is subjected to hot pressing treatment at a temperature of 120–180°C and a pressure of 2–7 kg / cm². 2 The hot pressing process takes 1 to 3 seconds.

[0024] In some embodiments, between the steps of "providing a membrane material and at least one vacuum insulation core material" and "attaching the membrane material to the other side of the vacuum insulation core material in a vacuum environment," the method for preparing the vacuum insulation panel further includes the following steps:

[0025] A second adhesive is applied to the membrane material.

[0026] In some embodiments, the second adhesive disposed on the membrane material includes:

[0027] A first colloid wrapped around the edge of the vacuum insulation core material;

[0028] A second colloid disposed around the first colloid.

[0029] In some embodiments, the first adhesive is VHB tape; and / or,

[0030] The second adhesive is polyurethane.

[0031] Secondly, this application provides an application of a vacuum insulation panel, wherein the vacuum insulation panel is a vacuum insulation panel prepared by the method described in any embodiment of the first aspect, and the vacuum insulation panel is applied to a refrigeration device or a heat preservation device. Attached Figure Description

[0032] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0033] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the structure of the first intermediate product provided in Embodiment 1 of this application;

[0035] Figure 2 This is an exploded structural diagram of the second intermediate product provided in Embodiment 1 of this application;

[0036] Figure 3 This is a schematic diagram of the structure of the vacuum insulation panel obtained in Embodiment 1 of this application;

[0037] Figure 4 This is a schematic diagram of the structure of the third intermediate product provided in Embodiment 2 of this application;

[0038] Figure 5 This is an exploded structural diagram of the fourth intermediate product provided in Embodiment 2 of this application;

[0039] Figure 6 This is a schematic diagram of the structure of the fifth intermediate product provided in Embodiment 4 of this application.

[0040] Figure 7 This is an exploded structural diagram of the sixth intermediate product provided in Embodiment 4 of this application.

[0041] The reference numerals used in the accompanying drawings are explained as follows:

[0042] 101-First membrane material, 102-Rectangular vacuum insulation core material, 1031-First irregularly shaped vacuum insulation core material, 1032-Second irregularly shaped vacuum insulation core material, 104-First colloid, 1041-Second colloid, 105-Second membrane material, 201-Rectangular vacuum insulation board, 2031-First irregularly shaped vacuum insulation board, 2032-Second irregularly shaped vacuum insulation board. Detailed Implementation

[0043] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0044] Unless otherwise specified, the terminology used herein should be understood as having the meaning commonly used in the art. Therefore, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. In case of any conflict, this specification shall prevail. All raw materials, reagents, instruments, and equipment used in this invention are commercially available or can be prepared by existing methods.

[0045] Various embodiments of the present invention may exist in the form of a range; it should be understood that the description in the form of a range is merely for convenience and brevity and should not be construed as a hard limitation on the scope of the invention; therefore, it should be considered that the range description has specifically disclosed all possible subranges and single numerical values ​​within that range. For example, it should be considered that the range description from 1 to 6 has specifically disclosed subranges such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., and single numbers within the range, such as 1, 2, 3, 4, 5, and 6, regardless of the range. Furthermore, whenever a numerical range is referred to herein, it means including any referenced number (fraction or integer) within the range referred to.

[0046] In this document, unless otherwise stated, directional terms such as “upper” and “lower” specifically refer to the drawing directions in the accompanying drawings. Furthermore, in the description of this invention, the terms “comprising,” “including,” etc., mean “including but not limited to.” Moreover, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase “comprising…” does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. In this document, relational terms such as “first” and “second” are used merely to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. In this document, “and / or” describes the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent: A alone, A and B simultaneously, or B alone. For associations involving three or more related objects described using "and / or", it indicates that any one of the three related objects can exist alone, or at least two of them can exist simultaneously. For example, for A, and / or B, and / or C, it can mean that any one of A, B, and C exists alone, or any two of them exist simultaneously, or all three of them exist simultaneously. In this document, "at least one" means one or more, and "more" means two or more. "At least one", "at least one of the following", or similar expressions refer to any combination of these items, including any combination of single or multiple items. For example, "at least one of a, b, or c", or "at least one of a, b, and c", can both mean: a, b, c, ab, i.e., a and b, ac, bc, or abc, where a, b, and c can be single or multiple.

[0047] Furthermore, the present invention may repeat reference numerals and / or reference letters in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0048] Existing vacuum insulation panels have technical problems due to their complex manufacturing process.

[0049] The technical solution provided in this application is to solve the above-mentioned technical problems, and the general idea is as follows:

[0050] This application provides a method for preparing a vacuum insulation panel, which includes the following steps:

[0051] S1. Provide membrane materials and vacuum insulation core materials;

[0052] It is readily understood that the membrane material, also known in the art as a barrier film, is used to isolate the vacuum insulation core material from the outside environment, maintaining the vacuum environment of the vacuum insulation core material. In practical applications, the barrier film material may include multilayer composite materials, such as metallized films, polymer films, etc. These materials are combined through specific processes (such as coating, lamination, etc.) to meet the requirements of VIP panels for barrier properties, sealing properties, temperature resistance, and chemical stability. Vacuum insulation core material is a material designed to provide efficient thermal insulation performance in a vacuum environment. It typically has a porous or special structure to reduce solid heat conduction and further suppress gas heat conduction and convection under vacuum conditions. As an example, the material of the vacuum insulation core material may include at least one of aerogel, porous ceramics, microporous glass, and organic plastics.

[0053] It is easy to understand that the vacuum insulation core material can be a regular shape or an irregular shape.

[0054] S2. Attach one side of at least one vacuum insulation core material to the membrane material;

[0055] It should be noted that the arrangement of multiple vacuum insulation core materials on the membrane material can be determined according to the actual product design.

[0056] In some embodiments, attaching one side of at least one vacuum insulation core material to the membrane material includes the following steps:

[0057] A first adhesive is applied to one side of the vacuum insulation core material, or to a film material to be bonded to one side of the vacuum insulation core material.

[0058] The membrane material is bonded to one side of the vacuum insulation core material using a pre-applied first adhesive.

[0059] In some embodiments, attaching one side of at least one vacuum insulation core material to the membrane material includes the following steps:

[0060] The membrane material to be bonded to one side of the at least one vacuum insulation core material is pretreated to form grooves on the membrane material that are adapted to the shape of each of the vacuum insulation core materials.

[0061] Each of the vacuum insulation core materials is fitted into a groove of a suitable shape.

[0062] It should be noted that bonding the membrane material to the vacuum insulation core material or adding grooves to the membrane material are both unnecessary steps to fix the vacuum insulation core material and the membrane material relatively and prevent displacement of the vacuum insulation core material. In some cases, these two methods are preferred, such as when irregularly shaped vacuum insulation core materials are spliced ​​together with small gaps between them, and displacement should be avoided as much as possible. Furthermore, these two methods can be implemented simultaneously.

[0063] The design of bonding the membrane material with the vacuum insulation core material or adding grooves to the membrane material has the following advantages: (1) Improved bonding accuracy: The bonding accuracy between the membrane material and the vacuum insulation core material can be significantly improved by the design of adhesives and grooves, reducing misalignment and gaps. (2) Enhanced sealing performance: The use of adhesives can enhance the sealing performance of the bonding surface and prevent air leakage during subsequent vacuum sealing. (3) Improved thermal insulation performance: Precise bonding and sealing can ensure that the vacuum insulation core material can perform optimally in a vacuum environment. (4) Strong adaptability: Through the pretreatment of the membrane material and the groove design, it can adapt to vacuum insulation core materials of different shapes and sizes, improving the flexibility and applicability of the preparation method.

[0064] In some implementations, the pretreatment is performed by hot pressing.

[0065] In the fabrication of vacuum insulation panels, hot pressing is an effective pretreatment method for the membrane material. Hot pressing, by simultaneously applying temperature and pressure, causes the membrane material to undergo plastic deformation in a specific area, thereby forming a groove that matches the shape of the vacuum insulation core material.

[0066] S3. In a vacuum environment, the membrane material is also attached to the other side of the at least one vacuum insulation core material.

[0067] It should be noted that the membrane material on one side and the other side of the vacuum insulation core material can be the same folded membrane material or two different membrane materials.

[0068] In some embodiments, the first adhesive is VHB tape.

[0069] It should be noted that VHB tape is a high-performance double-sided foam tape launched by 3M, short for Very High Bond tape. VHB tape has excellent adhesion and long-lasting tack, and can be used to bond a variety of materials, including metals, glass, plastics, and wood. It has good high temperature resistance, good weather resistance, and also has high shear strength and tear strength.

[0070] S4. Encapsulate the membrane material around the vacuum insulation core material, so that the vacuum insulation core material is sealed in the vacuum cavity formed by the membrane material, thereby obtaining the vacuum insulation board.

[0071] In some implementations, the encapsulation is carried out in the following manner:

[0072] The membrane material surrounding the vacuum insulation core is bonded together using a second adhesive.

[0073] In the packaging process of vacuum insulation panel preparation, in order to ensure that the vacuum insulation core material is effectively and stably fixed between the membrane materials, a second adhesive can be used to bond the membrane materials around the vacuum insulation core material.

[0074] In some embodiments, the second adhesive is a hot melt adhesive, and the encapsulation is implemented in the following manner:

[0075] The membrane material is subjected to hot pressing treatment, which causes the second adhesive to melt and bond to the membrane material surrounding the vacuum insulation core material.

[0076] In some embodiments, the membrane material is subjected to hot pressing treatment at a temperature of 120–180°C and a pressure of 2–7 kg / cm². 2 The hot pressing process takes 1 to 3 seconds.

[0077] The purpose of hot-pressing the membrane material is to melt the second adhesive under heat and pressure, and effectively bond it to the membrane material surrounding the vacuum insulation core material. This bonding method ensures a tight connection between the membrane material and the core material, thereby improving the structural strength and thermal insulation performance of the entire composite material. The hot-pressing temperature is limited to 120–180°C, which facilitates the complete melting of the second adhesive and provides a good bonding effect. The hot-pressing pressure is limited to 2–7 kg / cm². 2This process helps the second adhesive to better penetrate into the tiny gaps between the membrane material and the vacuum insulation core material after melting, forming a stronger adhesive force. Limiting the hot-pressing time to 1–3 seconds helps the second adhesive to completely melt and fully penetrate into the tiny gaps between the membrane material and the vacuum insulation core material. For example, the hot-pressing temperature includes, but is not limited to, 120°C, 130°C, 140°C, 150°C, 160°C, 170°C, 180°C, etc., and the hot-pressing pressure includes, but is not limited to, 2 kg / cm². 2 3kg / cm 2 4kg / cm 2 5kg / cm 2 6kg / cm 2 7kg / cm 2 The hot pressing time includes, but is not limited to, 1s, 1.2s, 1.5s, 1.8s, 2s, 2.2s, 2.5s, 2.8s, 3s, etc.

[0078] In some embodiments, between step S1 "providing a membrane material and at least one vacuum insulation core material" and step S3 "attaching the membrane material to the other side of the vacuum insulation core material in a vacuum environment", the method for preparing the vacuum insulation panel further includes the following steps:

[0079] A second adhesive is applied to the membrane material.

[0080] It should be noted that the second adhesive can be pre-applied to the membrane material before the vacuum insulation core material is bonded, or it can be applied to the membrane material along the edge of the vacuum insulation core material after the vacuum insulation core material is bonded. Therefore, the step of applying the second adhesive to the membrane material can be between steps S1 and S2, or between steps S2 and S3.

[0081] When the membrane material is also bonded to the other side of the vacuum insulation core material, local height differences may exist, potentially leading to wrinkles, bubbles, or incomplete seals after bonding. By applying a second adhesive to the membrane material, the adhesive fills the tiny gaps between the membrane and the vacuum insulation core material, ensuring the flatness and tightness of the bonding surface. Simultaneously, the adhesive enhances the adhesion between the membrane and the vacuum insulation core material, preventing peeling or misalignment during subsequent operations or use. Furthermore, the adhesive application guides the membrane material to transition more smoothly over areas of height difference during bonding, reducing or preventing wrinkles.

[0082] In some embodiments, the second adhesive disposed on the membrane material includes:

[0083] A first colloid wrapped around the edge of the vacuum insulation core material;

[0084] A second colloid disposed around the first colloid.

[0085] During encapsulation, rapid changes in air pressure may cause the first adhesive layer to detach due to the sudden pressure change, thus affecting the overall sealing and performance of the product. To solve this problem, a second adhesive layer can be added around the first adhesive layer to provide additional adhesive force. Furthermore, if the first adhesive layer has detached, the second adhesive layer can ensure that the relative positions of the membrane materials do not change. As the air pressure gradually stabilizes, the membrane materials on both sides of the vacuum insulation core material will move closer together again, and the first adhesive layer can re-bond.

[0086] In some embodiments, the second adhesive is polyurethane.

[0087] Polyurethane (PU), short for polyurethane, is a polymer material formed by the polycondensation reaction of polyols and polyisocyanates. The secondary adhesive includes, but is not limited to, polyurethane adhesives, and can also be other hot melt adhesives.

[0088] In some embodiments, the number of vacuum insulation core materials is at least two, and after encapsulating all the vacuum insulation core materials with a membrane, the method for preparing the vacuum insulation panel further includes the following steps:

[0089] The membrane material connecting different vacuum insulation core materials is cut to form at least two vacuum insulation panels.

[0090] In summary, for multiple vacuum insulation core materials, traditional methods require each core material to be bagged and vacuum-sealed individually. This method, however, simplifies the process by allowing multiple core materials to be spliced ​​together and sealed under vacuum. Specifically, for irregularly shaped vacuum insulation core materials, this method can also splice them into more regular shapes. Since excess membrane material needs to be trimmed later, this method reduces membrane material waste by splicing irregularly shaped vacuum insulation core materials.

[0091] Based on a general inventive concept, this application provides an application of a vacuum insulation panel, wherein the vacuum insulation panel is a vacuum insulation panel prepared by the method described in any embodiment of the first aspect, and the vacuum insulation panel is applied to a refrigeration device or a heat preservation device.

[0092] As an example, the refrigeration device can be any one of a refrigerator, freezer, refrigerated container, refrigerated truck, or automatic beverage vending machine, and the insulation device can be any one of a medical insulation box, food insulation box, or water heater.

[0093] The vacuum insulation panel prepared by this invention has excellent thermal insulation performance and stability, and can be widely used in refrigeration and insulation devices to improve the energy efficiency and performance of these devices.

[0094] The present application is further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the application. Experimental methods in the following embodiments that do not specify specific conditions are generally determined according to industry standards. If there is no corresponding industry standard, then common international standards, conventional conditions, or conditions recommended by the manufacturer are followed.

[0095] Example 1

[0096] This embodiment provides a method for preparing a vacuum insulation panel, which includes the following steps:

[0097] Sa: Provides a first membrane material 101, a second membrane material 105, a rectangular vacuum insulation core material 102, a first irregularly shaped vacuum insulation core material 1031, and a second irregularly shaped vacuum insulation core material 1032;

[0098] Sb: A first adhesive is provided in the area where the first membrane material 101 is to be bonded to the rectangular vacuum insulation core material 102, the first irregularly shaped vacuum insulation core material 1031, and the second irregularly shaped vacuum insulation core material 1032. A second adhesive is applied to the outer edge area of ​​the area where the first adhesive is provided to form a first colloid 104. The first adhesive is VHB tape and the second adhesive is polyurethane hot melt adhesive.

[0099] Sc: One side of the rectangular vacuum insulation core material 102, the first irregularly shaped vacuum insulation core material 1031, and the second irregularly shaped vacuum insulation core material 1032 are attached to the first membrane material 101 and bonded to the first membrane material 101 by the first adhesive to form a first intermediate product. The structure of the first intermediate product is as follows: Figure 1 As shown;

[0100] Sd: Under a vacuum environment with a pressure of 1 Pa, the second membrane material 105 is slowly brought closer to the other side of the rectangular vacuum insulation core material 102, the first irregularly shaped vacuum insulation core material 1031, and the second irregularly shaped vacuum insulation core material 1032 until the second membrane material 105 is bonded to the rectangular vacuum insulation core material 102, the first irregularly shaped vacuum insulation core material 1031, and the second irregularly shaped vacuum insulation core material 1032.

[0101] Se: The second membrane material 105 is subjected to hot pressing treatment, so that the second adhesive melts and bonds the first membrane material 101 and the second membrane material 105 around the vacuum insulation core material, to obtain a second intermediate product. The structure of the second intermediate product is as follows: Figure 2 As shown;

[0102] Sf: The membrane material connecting different vacuum insulation core materials is cut to form a rectangular vacuum insulation panel 201, a first irregularly shaped vacuum insulation panel 2031, and a second irregularly shaped vacuum insulation panel 2032. After trimming the excess membrane material from the edges of the rectangular vacuum insulation panel 201, the first irregularly shaped vacuum insulation panel 2031, and the second irregularly shaped vacuum insulation panel 2032, they are left to stand and then dried. The structures of the resulting vacuum insulation panels are as follows: Figure 3 As shown.

[0103] Additionally, it should be noted that, in order to more clearly illustrate the structure of the second intermediate product, Figure 2 The first irregularly shaped vacuum insulation core material 1031 and the second irregularly shaped vacuum insulation core material 1032 are not completely covered by the second membrane material 105. It should be understood that in the actual implementation process of this embodiment, the second membrane material 105 is regarded as completely covering the first irregularly shaped vacuum insulation core material 1031 and the second irregularly shaped vacuum insulation core material 1032.

[0104] Example 2

[0105] The main difference between this embodiment and Embodiment 1 is that, in step Sb, in addition to applying a second adhesive to the outer edge region of the area where the first adhesive is applied to form the first colloid 104, a second adhesive is also applied to the outer periphery of the first colloid 104 to form the second colloid 1041.

[0106] The specific details of this embodiment are as follows:

[0107] This embodiment provides a method for preparing a vacuum insulation panel, which includes the following steps:

[0108] Sa: Provides a first membrane material 101, a second membrane material 105, a rectangular vacuum insulation core material 102, a first irregularly shaped vacuum insulation core material 1031, and a second irregularly shaped vacuum insulation core material 1032;

[0109] Sb: A first adhesive is provided in the area where the first membrane material 101 is to be bonded to the rectangular vacuum insulation core material 102, the first irregularly shaped vacuum insulation core material 1031, and the second irregularly shaped vacuum insulation core material 1032. A second adhesive is applied to the outer edge area of ​​the area where the first adhesive is provided to form a first colloid 104. A second adhesive is applied to the outer edge of the first colloid 104 to form a second colloid 1041. The first adhesive is VHB tape and the second adhesive is polyurethane hot melt adhesive.

[0110] Sc: One side of the rectangular vacuum insulation core material 102, the first irregularly shaped vacuum insulation core material 1031, and the second irregularly shaped vacuum insulation core material 1032 are attached to the first membrane material 101 and bonded to the first membrane material 101 by the first adhesive to form a third intermediate product. The structure of the third intermediate product is as follows: Figure 4As shown;

[0111] Sd: Under a vacuum environment with a pressure of 1 Pa, the second membrane material 105 is slowly brought closer to the other side of the rectangular vacuum insulation core material 102, the first irregularly shaped vacuum insulation core material 1031, and the second irregularly shaped vacuum insulation core material 1032 until the second membrane material 105 is bonded to the rectangular vacuum insulation core material 102, the first irregularly shaped vacuum insulation core material 1031, and the second irregularly shaped vacuum insulation core material 1032.

[0112] Se: The second membrane material 105 is subjected to hot pressing treatment, so that the second adhesive melts and bonds the first membrane material 101 and the second membrane material 105 around the vacuum insulation core material, to obtain a fourth intermediate product, the structure of which is as follows: Figure 5 As shown;

[0113] Sf: Cut the membrane material connecting different vacuum insulation core materials to form a rectangular vacuum insulation board 201, a first irregularly shaped vacuum insulation board 2031, and a second irregularly shaped vacuum insulation board 2032. After trimming the excess membrane material at the edges of the rectangular vacuum insulation board 201, the first irregularly shaped vacuum insulation board 2031, and the second irregularly shaped vacuum insulation board 2032, let them stand and then dry them.

[0114] Additionally, it should be noted that, in order to more clearly illustrate the structure of the second intermediate product, Figure 4 The first irregularly shaped vacuum insulation core material 1031 and the second irregularly shaped vacuum insulation core material 1032 are not completely covered by the second membrane material 105. It should be understood that in the actual implementation process of this embodiment, the second membrane material 105 is regarded as completely covering the first irregularly shaped vacuum insulation core material 1031 and the second irregularly shaped vacuum insulation core material 1032.

[0115] Example 3

[0116] The difference between this embodiment and Embodiment 1 is only that: in step Sa, the first film 101, which is to be bonded to the vacuum insulation core material, is subjected to hot pressing treatment, so that grooves are formed on the film 101 that are adapted to the shapes of the rectangular vacuum insulation core material 102, the first irregularly shaped vacuum insulation core material 1031, and the second irregularly shaped vacuum insulation core material 1032 respectively; in step Sb, the first adhesive is placed in the groove, and the rectangular vacuum insulation core material 102, the first irregularly shaped vacuum insulation core material 1031, and the second irregularly shaped vacuum insulation core material 1032 are bonded to the corresponding grooves.

[0117] Example 4

[0118] The main difference between this embodiment and Embodiment 1 is that this embodiment does not use irregularly shaped vacuum insulation core material.

[0119] The specific details of this embodiment are as follows:

[0120] This embodiment provides a method for preparing a vacuum insulation panel, which includes the following steps:

[0121] Sa: Provides a first membrane material 101, a second membrane material 105, and a rectangular vacuum insulation core material 102;

[0122] Sb: A first adhesive is provided in the area where the first membrane material 101 is to be bonded to the rectangular vacuum insulation core material 102, and a second adhesive is applied to the outer edge area of ​​the area where the first adhesive is provided to form a first colloid 104, wherein the first adhesive is VHB tape and the second adhesive is polyurethane hot melt adhesive.

[0123] Sc: One side of the rectangular vacuum insulation core material 102 is attached to the first membrane material 101 and bonded to the first membrane material 101 with the first adhesive to form a fifth intermediate product. The structure of the fifth intermediate product is as follows: Figure 6 As shown;

[0124] Sd: In a vacuum environment with a pressure of 1 Pa, control the second membrane material 105 to slowly approach the other side of the rectangular vacuum insulation core material 102 until the second membrane material 105 and the rectangular vacuum insulation core material 102 are bonded together.

[0125] Se: The second membrane material 105 is subjected to hot pressing treatment, so that the second adhesive melts and bonds the first membrane material 101 and the second membrane material 105 around the vacuum insulation core material, to obtain a sixth intermediate product, the structure of which is as follows: Figure 7 As shown;

[0126] Sf: Cut the membrane material connecting different vacuum insulation core materials to form a rectangular vacuum insulation board. After trimming the excess membrane material at the edge of the rectangular vacuum insulation board, let it stand and then dry it to obtain the vacuum insulation board.

[0127] Furthermore, one or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:

[0128] In this embodiment of the invention, for multiple vacuum insulation core materials, the traditional solution requires each vacuum insulation core material to be bagged and vacuumed, while this solution can splice multiple vacuum insulation core materials together and seal them together under vacuum, making the steps simpler.

[0129] In this embodiment of the invention, for irregularly shaped vacuum insulation core materials, this solution can also splice them into a more regular shape. Since excess membrane material needs to be cut off later, this solution can reduce membrane material waste by splicing irregularly shaped vacuum insulation core materials.

[0130] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A method for preparing a vacuum insulation panel, characterized in that, The method for preparing the vacuum insulation panel includes the following steps: We provide membrane materials and vacuum insulation core materials; At least one side of a vacuum insulation core material is attached to the membrane material; In a vacuum environment, the membrane material is also attached to the other side of the at least one vacuum insulation core material; Encapsulate all the vacuum insulation core materials with a membrane material, so that the vacuum insulation core materials are sealed in the vacuum cavity formed by the membrane material, to obtain at least one vacuum insulation panel.

2. The method for preparing a vacuum insulation panel according to claim 1, characterized in that, The step of attaching one side of at least one vacuum insulation core material to the membrane material includes the following steps: A first adhesive is applied to one side of the vacuum insulation core material, or to a film material to be bonded to one side of the vacuum insulation core material. The membrane material is bonded to one side of the vacuum insulation core material using a pre-applied first adhesive.

3. The method for preparing a vacuum insulation panel according to claim 1, characterized in that, The step of attaching one side of at least one vacuum insulation core material to the membrane material includes the following steps: The membrane material to be bonded to one side of the at least one vacuum insulation core material is pretreated to form grooves on the membrane material that are adapted to the shape of each of the vacuum insulation core materials. Each of the vacuum insulation core materials is fitted into a groove of a suitable shape.

4. The method for preparing a vacuum insulation panel according to claim 3, characterized in that, The pretreatment method is hot pressing.

5. The method for preparing a vacuum insulation panel according to claim 1, characterized in that, The number of vacuum insulation core materials is at least two. After encapsulating all the vacuum insulation core materials with a membrane, the method for preparing the vacuum insulation panel further includes the following steps: The membrane material connecting different vacuum insulation core materials is cut to form at least two vacuum insulation panels.

6. The method for preparing a vacuum insulation panel according to claim 1, characterized in that, The encapsulation is implemented in the following manner: The membrane material surrounding the vacuum insulation core is bonded together using a second adhesive.

7. The method for preparing a vacuum insulation panel according to claim 6, characterized in that, The second adhesive is a hot melt adhesive, and the encapsulation is carried out in the following manner: The membrane material is subjected to hot pressing treatment, which causes the second adhesive to melt and bond to the membrane material surrounding the vacuum insulation core material.

8. The method for preparing a vacuum insulation panel according to claim 7, characterized in that, The membrane material is subjected to hot pressing treatment at a temperature of 120–180°C and a pressure of 2–7 kg / cm². 2 The hot pressing process takes 1 to 3 seconds.

9. The method for preparing a vacuum insulation panel according to claim 1, characterized in that, Between the steps "providing a membrane material and at least one vacuum insulation core material" and "attaching the membrane material to the other side of the vacuum insulation core material in a vacuum environment," the method for preparing the vacuum insulation panel further includes the following steps: A second adhesive is applied to the membrane material.

10. The method for preparing a vacuum insulation panel according to claim 9, characterized in that, The second adhesive disposed on the membrane material includes: A first colloid wrapped around the edge of the vacuum insulation core material; A second colloid disposed around the first colloid.

11. The method for preparing a vacuum insulation panel according to claim 9, characterized in that, The first adhesive is VHB tape; and / or, The second adhesive is polyurethane.

12. An application of a vacuum insulation panel, characterized in that, The vacuum insulation panel is a vacuum insulation panel prepared by the method described in any one of claims 1 to 11, and the vacuum insulation panel is applied to a refrigeration device or a heat preservation device.

Images