An edge-wrapping structure for a sheet and a composite edge-wrapping sheet.

Abstract

This application relates to the technical field of edge banding of materials, and discloses an edge banding structure for a sheet and a composite edge banding sheet, which includes edge banding strips adhered to two opposite surfaces of a graphene sheet. The edge banding strips include a base layer and an adhesive layer stacked together. The base layer is a microporous foam material layer, and the adhesive layer is disposed on the side of the base layer facing the graphene sheet. Both edge banding strips have an extension relative to the edge of the graphene sheet, and the extended portion of one edge banding strip is pressed and bonded towards the other edge banding strip. This application achieves effective edge banding of the graphene sheet, utilizing the characteristics of the microporous foam material to play a role in buffering and protection.

Description

Technical Field

[0001] This application relates to the technical field of material edge binding, and in particular to an edge binding structure for sheet materials and a composite edge binding sheet. Background Technology

[0002] Graphene sheets play a crucial role in industrial applications such as heat conductors, shielding devices, electromagnetic wave absorption equipment, and heat dissipation components. However, the edges of cut graphene sheets may crack and flake, potentially causing short circuits and other quality issues in subsequent applications. Therefore, it is necessary to pre-treat the edges of graphene sheets before use.

[0003] Currently, the edge-wrapping technology for graphene sheets generally uses thin film materials, with a thickness typically ranging from 0.002mm to 0.10mm. While edge-wrapping with thin film materials can prevent the graphene sheets from cracking and shedding, these materials are thin and lack elasticity. Consequently, they cannot provide cushioning or other effects when exposed to external impacts or vibrations, and therefore cannot effectively protect the graphene sheets from shock. Utility Model Content

[0004] To provide shock absorption and protection for graphene sheets, this application provides an edge-wrapping structure for the sheet and a composite edge-wrapping sheet.

[0005] In a first aspect, this application provides a sheet edge-wrapping structure, which adopts the following technical solution: An edge-binding structure for a sheet includes edge-binding strips adhered to two opposing surfaces of a graphene sheet; The edge-sealing strip includes a base layer and an adhesive layer stacked together. The base layer is a microporous foam material layer, and the adhesive layer is disposed on the side of the base layer facing the graphene sheet. Both of the edge-binding strips have an extension relative to the edge of the graphene sheet, and the extended portion of one of the edge-binding strips is pressed and bonded toward the other edge-binding strip.

[0006] By adopting the above technical solutions, the edge-sealing strip can prevent the graphene sheet from cracking and shedding, avoiding quality problems such as short circuits in subsequent applications; the base layer of the microporous foam material is elastic and can effectively dampen and protect the graphene sheet.

[0007] Optionally, the thickness of the base layer is 0.5-2.5 mm.

[0008] By adopting the above technical solution, a microporous foam material with a thickness of 0.5-2.5mm is used as the base layer of the edge-sealing strips adhered to the two opposite surfaces of the graphene sheet. This not only effectively protects the graphene sheet from shock, but also ensures that the appropriate thickness does not affect the use of the graphene sheet.

[0009] Optionally, the microporous foam material layer is a microporous foam silicone material layer, a polyester microporous foam layer, or a polyether microporous foam layer.

[0010] By adopting the above technical solutions, three microporous foam materials with better shock absorption effects are provided.

[0011] Optionally, the microporous foam material layer is a microporous foamed silicone material layer, and the microporous foamed silicone material layer contains PET.

[0012] By adopting the above technical solution, a microporous foamed silicone material layer is used as the base layer. The microporous foamed silicone material has good flexibility and high and low temperature resistance, and is suitable for various working environments. It can effectively dampen and protect the graphene sheet. In addition, the microporous foamed silicone material layer contains PET, which can further enhance the elasticity of the base layer.

[0013] Optionally, the microporous foam material layer is a closed-cell foam material.

[0014] By adopting the above technical solutions, closed-cell microporous foam materials can further improve the waterproof and moisture-proof performance of edge-sealing strips and reduce the impact of external moisture on graphene sheets.

[0015] Optionally, the adhesive layer is a double-sided adhesive layer, a single-sided adhesive film layer, or a hot melt adhesive film layer.

[0016] By adopting the above technical solution, three preferred adhesive materials are provided.

[0017] Optionally, the adhesive layer is a double-sided adhesive layer, and the substrate of the double-sided adhesive layer is a PET film.

[0018] By adopting the above technical solution, the double-sided adhesive layer can ensure good adhesion and bonding effect; the substrate of the double-sided adhesive is PET film, which has good stability and durability, and can ensure the long-term performance of the edge-wrapping structure.

[0019] Optionally, the width of the edge-sealing strip extending beyond the edge of the graphene sheet is 3-9 mm.

[0020] By adopting the above technical solution, it is possible to ensure that the edge-wrapping strip has a suitable coverage range for the edge of the graphene sheet, which can effectively prevent the edge of the graphene sheet from cracking and falling off, and avoid material waste or affecting subsequent application and installation due to excessive extension width.

[0021] Optionally, the edge-binding strip further includes an adhesive backing layer, which is disposed on the side of the base layer away from the adhesive layer, and the side of the adhesive backing layer away from the base layer is adhesive.

[0022] By adopting the above technical solution, an adhesive backing layer is provided on the side of the base layer of the edge-sealing strip away from the adhesive layer, which facilitates the bonding and fixing of the edge-sealed graphene sheet to other components, thereby improving the ease of installation of the graphene sheet in industrial applications.

[0023] Secondly, this application provides a composite edge-sealing sheet, which adopts the following technical solution: A composite edge-sealing sheet includes a graphene sheet and the aforementioned edge-sealing structure, wherein two edge-sealing strips of the edge-sealing structure together cover the edge of the graphene sheet.

[0024] By adopting the above technical solution, a composite edge-wrapped sheet is provided that has a strong edge binding and can buffer and absorb shock when subjected to external impact, thereby improving the stability of the sheet in use.

[0025] In summary, this application includes at least one of the following beneficial effects: 1. Edge-sealing strips can prevent the edges of graphene sheets from cracking and falling off, avoiding quality problems such as short circuits in subsequent application products; 2. The base layer is made of microporous foam material, which is elastic and can effectively dampen and protect the graphene sheet, reducing the possibility of damage to the graphene sheet during transportation or use. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the exploded structure of Example 1; Figure 2 This is a cross-sectional structural diagram of Example 1; Figure 3 yes Figure 1 Enlarged structural diagram at point A; Figure 4 This is a schematic diagram of the exploded structure of Example 2; Explanation of reference numerals in the attached drawings: 101, graphene sheet; 1, edge binding strip; 2, base layer; 3, adhesive layer; 4, backing adhesive layer. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0028] Example 1: This application provides an edge-binding structure for a sheet material, referring to... Figure 1 and Figure 2, the edge wrapping structure includes edge wrapping rubber strips 1 adhered to two opposite surfaces of the graphene sheet 101. The overall appearance of the edge wrapping rubber strips 1 is preferably set in a "hui" - shaped structure and is formed by cutting; when the edge wrapping rubber strips 1 are adhered to the graphene sheet 101, a part of their interior is adhesively overlapped on the graphene sheet 101, and the external part has an extension amount relative to the edge of the graphene sheet 101, thereby effectively wrapping the edge of the graphene sheet 101 and preventing its edge from cracking and chipping.

[0029] In the embodiment of the present application, the edge wrapping rubber strip 1 includes a base layer 2 and an adhesive layer 3 arranged in a stacked manner. The adhesive layer 3 is arranged on the side of the base layer 2 facing the graphene sheet 101 to achieve the bonding effect; the base layer 2 is set as a micro - porous foaming material layer, which has certain elasticity and thickness and can buffer external vibrations and impacts; through the cooperation of the adhesive layer 3 and the base layer 2, the edge - wrapped graphene sheet 101 can be shock - absorbed and protected. At the same time, due to the thickness and elasticity of the material of the base layer 2, the pores between the edge wrapping rubber strip 1 and the side wall of the graphene sheet 101 can be effectively filled, improving the edge wrapping effect.

[0030] Refer to Figure 3 , in the embodiment of the present application, the thickness of the base layer 2 is preferably set to 0.5 - 2.5 mm; there are many tiny pores inside this micro - porous foaming material layer; these pores can store air, so by setting a certain thickness, the base layer 2 can have good elasticity and shock - absorption performance; its structural feature is that it is relatively soft in texture and can deform when subjected to external extrusion and then quickly return to its original state. For example, when subjected to vibration impact, the base layer 2 can absorb and disperse energy, reducing the impact on the graphene sheet 101. At the same time, the surface of the micro - porous foaming material layer has weak self - adhesion, which can be conveniently pasted on planes such as glass, chips, copper plates, aluminum plates, steel plates, and desktops, and at the same time, the edge - wrapped graphene sheet 101 can be conveniently positioned and pasted multiple times.

[0031] Furthermore, the micro - porous foaming material of the micro - porous foaming material layer is preferably a closed - cell type. The closed - cell micro - porous foaming material has better waterproof performance, can prevent moisture from invading the graphene sheet 101, and further improves the quality and stability of the product.

[0032] Refer to Figure 3 , in the embodiment of the present application, the micro - porous foaming material layer can be a micro - porous foaming silica gel material layer, a polyester micro - porous foam layer, or a polyether micro - porous foam layer, etc. The micro - porous foaming silica gel material has good flexibility and high and low temperature resistance, and is suitable for various different working environments; the polyester micro - porous foam has high strength and wear resistance and can better protect the graphene sheet 101; the polyether micro - porous foam has good sound - absorption performance and can further reduce the influence of external noise on the graphene sheet 101.

[0033] Preferably, it can employ a microporous foamed silicone material layer, which maintains stable performance under different temperature environments and can effectively perform shock absorption and protection even under high or low temperature conditions. Simultaneously, closed-cell microporous foamed silicone possesses excellent elastic recovery properties and resistance to compression deformation. The silicon-oxygen bonds in the silicone rubber molecular chains are relatively long with large bond angles, resulting in highly flexible molecular chains that endow the material with excellent resilience. Combined with the closed-cell structure, these micropores act like countless micro-springs, storing energy under pressure and rapidly returning to their original shape after the pressure is released.

[0034] Furthermore, the microporous foamed silicone material layer may also contain PET (polyethylene terephthalate), a thermoplastic polyester material with high impact strength and folding resistance. The addition of PET can enhance the strength and stability of the base layer 2, making the edge-sealing strip 1 more durable. PET can be made into a PET fiber mesh and composited with the microporous foamed silicone; the specific composite method is existing technology and will not be described in detail in this application.

[0035] Reference Figure 3 In this embodiment, the adhesive layer 3 is disposed on the side of the base layer 2 facing the graphene sheet 101. The adhesive layer 3 can be a double-sided adhesive layer, a single-sided adhesive film layer, or a hot melt adhesive film layer. The advantage of double-sided adhesive is that it is easy to apply and can quickly bond the edge-sealing strip 1 to the graphene sheet 101; single-sided adhesive film has a lower cost; and hot melt adhesive film can generate strong adhesion after heating, resulting in a more secure bonding effect.

[0036] To ensure sufficient bonding strength, the adhesive layer 3 is preferably set as a double-sided adhesive layer in this application. It is usually composed of two adhesive layers and a carrier in the middle. The adhesive layers have strong adhesion and can be tightly attached to the surface of the graphene sheet 101 to ensure that the edge-sealing strip 1 will not easily fall off. Its substrate can be PET film. PET film has good flexibility and chemical stability, which can improve the bonding strength.

[0037] Reference Figure 1 and Figure 2 In this embodiment, the width of the edge-sealing adhesive strip 1 extending beyond the edge of the graphene sheet 101 is preferably 3-9 mm, and the extended portions are bonded to each other. This extension ensures sufficient coverage of the edge of the graphene sheet 101, preventing the edge from being exposed and causing breakage or chipping. The width of the edge-sealing adhesive strip 1 bonded to the graphene sheet 101 is 2-5 mm. This moderate bonding width ensures the bonding strength on the graphene sheet 101 without excessively occupying the effective area of ​​the graphene sheet 101.

[0038] Reference Figure 2Optionally, during the actual edge-binding process, the widths of the two edge-binding strips 1 are set to be the same length, so that when one of them, such as the upper edge-binding strip 1, is pressed down onto the lower edge-binding strip 1, the edge of the lower edge-binding strip 1 extends slightly beyond the edge of the upper edge-binding strip 1 after pressing; or, depending on the thickness of the graphene sheet 101, the width of the upper edge-binding strip 1 can be set to be slightly wider than the width of the lower edge-binding strip 1, so that when the upper edge-binding strip 1 is pressed down onto the lower edge-binding strip 1, the outer edges of the two edge-binding strips 1 can be aligned perfectly.

[0039] The implementation principle of the sheet edge-wrapping structure in this application embodiment is as follows: The sheet edge-wrapping structure of this embodiment solves the problem that existing film material edge wrapping cannot effectively reduce shock and protect by using an edge-wrapping strip 1 with a microporous foam material base layer 2; the elasticity and certain thickness of the microporous foam material can buffer external vibration and impact, and prevent the edge of the graphene sheet 101 from breaking and falling off; at the same time, the surface of the microporous foam material has weak adhesion, which can be easily positioned and attached multiple times.

[0040] When edge-wrapping the graphene sheet 101, firstly, one side of the edge-wrapping strip 1 with the adhesive layer 3 is bonded to one side of the graphene sheet 101; then, the other side of the edge-wrapping strip 1 with the adhesive layer 3 is bonded to the opposite side of the graphene sheet 101 in the same way; then, one edge-wrapping strip 1 is pressed onto the surface of the other edge-wrapping strip 1, so that the two edge-wrapping strips 1 are closely attached.

[0041] Example 2: The difference between this embodiment and Embodiment 1 is that an adhesive backing layer 4 is added to the edge-binding strip 1.

[0042] Reference Figure 4 Specifically, the adhesive backing layer 4 is disposed on the side of the base layer 2 away from the adhesive layer 3, and the side of the adhesive backing layer 4 away from the base layer 2 is adhesive; the adhesive backing layer 4 may be composed of several double-sided adhesive strips.

[0043] By setting the adhesive backing layer 4, the adhesion of the wrapped composite graphene sheet 101 can be increased, making it easier to attach the wrapped graphene sheet 101 to other components. The double-sided adhesive strip makes the adhesion of the adhesive backing layer 4 more flexible, and it can be cut and adjusted according to actual needs. It should be noted that the adhesive backing layer 4 can be set according to actual needs. It can be set on the upper and lower edge-wrapping adhesive strips 1 respectively, or it can be set on only one edge-wrapping adhesive strip 1. As in this embodiment, the adhesive backing layer 4 is only set on the upper edge-wrapping adhesive strip 1.

[0044] The implementation principle of the edge-binding structure of the sheet material in this application embodiment is as follows: the multi-layer structure design of the edge-binding strip 1 includes a base layer 2, an adhesive layer 3 and a backing adhesive layer 4, so that the edge-binding strip 1 can be firmly attached to the graphene sheet 101 and can be easily connected with other components, thereby improving the practicality of the product.

[0045] Example 3: This application provides a composite edge-sealing sheet, including the edge-sealing structures in Embodiments 1 and 2 above and a graphene sheet 101. The two edge-sealing strips in the edge-sealing structure together cover the edge of the graphene sheet 101.

[0046] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A sheet material edge-binding structure, characterized in that: Including edge-sealing strips (1) adhered to the two opposite surfaces of the graphene sheet (101); The edge-sealing strip (1) includes a base layer (2) and an adhesive layer (3) stacked together. The base layer (2) is a microporous foam material layer, and the adhesive layer (3) is disposed on the side of the base layer (2) facing the graphene sheet (101). Both of the edge-binding strips (1) have an extension relative to the edge of the graphene sheet (101), and the extended portion of one of the edge-binding strips (1) is pressed and bonded toward the other edge-binding strip (1).

2. The edge-binding structure of the sheet material according to claim 1, characterized in that: The thickness of the base layer (2) is 0.5-2.5 mm.

3. The edge-binding structure of the sheet material according to claim 1, characterized in that: The microporous foam material layer is a microporous foam silicone material layer, a polyester microporous foam layer, or a polyether microporous foam layer.

4. The edge-binding structure of the sheet material according to claim 3, characterized in that: The microporous foamed material layer is a microporous foamed silicone material layer, and the microporous foamed silicone material layer contains PET.

5. The edge-binding structure of the sheet material according to claim 1, characterized in that: The microporous foam material layer is made of closed-cell foam material.

6. The edge-binding structure of the sheet material according to claim 1, characterized in that: The adhesive layer (3) is a double-sided adhesive layer, a single-sided adhesive film layer, or a hot melt adhesive film layer.

7. The edge-binding structure of the sheet material according to claim 1, characterized in that: The adhesive layer (3) is a double-sided adhesive layer, and the substrate of the double-sided adhesive layer is a PET film.

8. The edge-binding structure of the sheet material according to claim 1, characterized in that: The width of the edge-sealing strip (1) extending from the edge of the graphene sheet (101) is 3-9 mm.

9. The edge-binding structure of the sheet material according to any one of claims 1-8, characterized in that: The edge-binding adhesive strip (1) also includes a backing layer (4), which is disposed on the side of the base layer (2) away from the adhesive layer (3) and has adhesive properties on the side away from the base layer (2).

10. A composite edge-sealing sheet, characterized in that: It includes a graphene sheet (101) and an edge-binding structure as described in any one of claims 1-9, wherein two edge-binding strips (1) of the edge-binding structure together cover the edge of the graphene sheet (101).

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