An aluminum foil tape

Abstract

The utility model discloses a kind of aluminium foil adhesive tapes, including paper reel, aluminium foil tape is wound around the outer periphery of paper reel and the pressure-sensitive adhesive layer located in the inner side of aluminium foil tape, the side of the pressure-sensitive adhesive layer away from aluminium foil tape is provided with release liner. Aluminium foil tape is integrally connected with the length direction of pressure-sensitive adhesive layer, and side edge is extended from both sides of pressure-sensitive adhesive layer, and side edge is attached by indentation with release liner. The utility model is attached by setting side edge on both sides of aluminium foil tape and release liner, effectively prevent the edge of adhesive layer from dust, improve the convenience of use and product cleanliness.

Description

Technical Field

[0001] This utility model relates to the field of technical fields, specifically to an aluminum foil tape. Background Technology

[0002] Aluminum foil tape is widely used in construction, electronics, and packaging industries due to its excellent thermal conductivity, shielding, and sealing properties. Existing aluminum foil tapes typically consist of an aluminum foil layer, a pressure-sensitive adhesive layer, and a release liner. In practical use, especially when the pressure-sensitive adhesive layer is thick, the edges of the tape are easily exposed, leading to dust and impurities adhering to the surface, affecting the bonding effect and the cleanliness of the surface. Summary of the Invention

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide an aluminum foil tape with a reasonable structure, good dustproof performance and easy use.

[0004] To achieve the above objectives, the technical solution provided by this utility model is as follows: An aluminum foil tape includes a paper roll with an aluminum foil strip wrapped around its outer periphery and a pressure-sensitive adhesive layer located inside the aluminum foil strip. A release liner is disposed on the side of the pressure-sensitive adhesive layer away from the aluminum foil strip. The aluminum foil strip is integrally connected to the pressure-sensitive adhesive layer along its length. Side edges are provided on both sides of the pressure-sensitive adhesive layer in a direction away from the pressure-sensitive adhesive layer. The width of the release liner is adapted to the length and width of the aluminum foil strip. An indentation is provided between the aluminum foil strip and the side edge, the indentation causing the side edge to adhere to the release liner.

[0005] As a preferred technical solution, the release liner is silicone paper, and the silicone paper has flanges on both sides, which are attached to the sides.

[0006] As a preferred technical solution, a mesh layer is further provided between the aluminum foil strip and the pressure-sensitive adhesive layer.

[0007] As a preferred technical solution, the aluminum foil strip is evenly distributed with easy-tear embossing along its length, and the length of the easy-tear embossing is greater than or equal to the width of the aluminum foil strip.

[0008] As a preferred technical solution, the depth of the easy-tear embossing is 1 / 3 to 1 / 2 of the thickness of the aluminum foil strip.

[0009] As a preferred technical solution, the width of the side is 1-3mm.

[0010] As a preferred technical solution, the mesh layer is a glass fiber mesh or a polyethylene terephthalate mesh, with a mesh size of 2mm×2mm to 5mm×5mm.

[0011] As a preferred technical solution, the side of the aluminum foil strip away from the pressure-sensitive adhesive layer is also laminated with a plastic film layer.

[0012] As a preferred technical solution, the plastic film layer is made of polyethylene terephthalate or biaxially oriented polypropylene, and its thickness is 12-50 μm.

[0013] The advantages and beneficial effects of this utility model are as follows: by setting the side edges to adhere to the release liner, dust is effectively prevented from adhering to the edges of the pressure-sensitive adhesive layer, improving product cleanliness and user experience. The mesh layer enhances the strength of the tape; the easy-tear embossing makes the tape easier to tear and maintains a relatively neat tear. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an enlarged structural schematic diagram of point A in this utility model; Figure label: 1-Paper roll, 2-Pressure-sensitive adhesive layer, 3-Release liner, 4-Side edge, 5-Indentation, 6-Flanged edge, 7-Grid layer, 8-Easy-tear embossing, 9-Plastic film layer, 10-Aluminum foil strip. Detailed Implementation

[0015] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not the entire structure. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0016] The terms “comprising” and “having”, and any variations thereof, used in this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus.

[0017] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly or implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0018] Please see Figures 1-2 To prevent dust from adhering to the edges of the pressure-sensitive adhesive layer of aluminum foil tape during storage and use, and to improve product cleanliness and ease of use, this embodiment provides an aluminum foil tape comprising a paper roll 1, an aluminum foil strip 10 wrapped around the outer periphery of the paper roll 1, and a pressure-sensitive adhesive layer 2 located inside the aluminum foil strip. A release liner 3 is provided on the side of the pressure-sensitive adhesive layer 2 away from the aluminum foil strip. The aluminum foil strip is integrally connected to the pressure-sensitive adhesive layer 2 along its length. Side edges 4 extend from both sides of the pressure-sensitive adhesive layer 2 away from the layer. An indentation 5 is provided between the aluminum foil strip 10 and the side edges 4, causing the side edges 4 to adhere to the release liner 3. During winding or use, the side edges 4 naturally bend and tightly adhere to the release liner 3 through the indentation 5, forming a physical barrier that effectively prevents dust from intruding from the tape edges, keeping the adhesive surface clean and improving the ease of tearing and pasting for users.

[0019] To further improve the release effect of the release liner, the technical solution provided in this embodiment is as follows: the release liner 3 is silicone paper, and the silicone paper has flanges 6 on both sides, which are adhered to the side edges 4. The silicone paper has excellent release performance, and its flanges 6 on both sides are aligned and adhered to the side edges 4 of the aluminum foil strip, enhancing the edge sealing effect, preventing the adhesive layer from oxidizing or becoming contaminated, and making it easy for users to peel off the liner.

[0020] Furthermore, the silicone paper can be single-sided or double-sided, with the silicone side bonded to the adhesive layer 2. When using single-sided silicone paper, since the other side is usually paper, the bonding surfaces of the flange 6 and the side 4 are paper and aluminum foil, respectively. Both are hydrophilic materials relative to silicone, making it easier to achieve stable bonding through indentation 5, which is beneficial for maintaining reliable edge coverage during winding and storage. The microscopic gap between the flange 6 and the side 4 also facilitates air entry during initial peeling, reducing adhesive stress and making the tape easier to peel off. If double-sided silicone paper is used, the flange 6 is treated with silicone oil throughout, resulting in higher adjustability of the bonding strength with the aluminum foil side 4. However, the amount of silicone oil applied needs to be controlled to avoid excessive slippage. In practical applications, the type of silicone paper can be flexibly selected according to the tape viscosity and usage scenario.

[0021] To enhance the overall strength and tear resistance of the aluminum foil tape, the technical solution provided in this embodiment is as follows: a mesh layer 7 is further provided between the aluminum foil tape and the pressure-sensitive adhesive layer 2. The mesh layer 7 serves as a reinforcing material composited between the aluminum foil and the adhesive layer, uniformly distributing stress when the tape is under tension, preventing accidental breakage of the tape, and improving its mechanical strength.

[0022] Specifically, the mesh layer 7 is made of glass fiber mesh or polyethylene terephthalate mesh, with a mesh size of 2mm×2mm to 5mm×5mm.

[0023] To facilitate users in tearing the required length of tape as needed and improve efficiency, the technical solution provided in this embodiment is as follows: the aluminum foil strip has evenly distributed easy-tear embossing 8 along its length, and the length of the easy-tear embossing 8 is greater than or equal to the width of the aluminum foil strip 10. Users can easily tear the tape at any embossed point, resulting in a clean tear and avoiding tape waste and operational inconvenience.

[0024] To ensure that the easy-tear embossing facilitates tearing without affecting the overall performance of the tape, the technical solution provided in this embodiment is as follows: the depth of the easy-tear embossing 8 is 1 / 3 to 1 / 2 of the thickness of the aluminum foil tape 10. This depth design provides a clear tear guide line while ensuring the structural integrity of the aluminum foil tape, making the tearing action more effortless and precise.

[0025] To strike a balance between dust protection and material cost, the technical solution provided in this embodiment is that the width of the side edge 4 is 1-3mm. This width range effectively covers the edge of the adhesive layer without excessively increasing material usage, thus balancing economy and functionality.

[0026] To enhance the wear resistance, weather resistance, and printability of the outer surface of the aluminum foil strip, the technical solution provided in this embodiment is as follows: a plastic film layer 9 is also laminated on the side of the aluminum foil strip 10 away from the pressure-sensitive adhesive layer 2. The plastic film layer 9 provides an additional protective layer to prevent scratches or oxidation on the aluminum foil surface.

[0027] In some embodiments, the plastic film layer can also serve as a printing base layer for pre-printing text or advertising trademarks, such as manufacturer, product model, or scope of application, operating temperature, expiration date, etc.

[0028] To clarify the selection of materials and thickness for the plastic film layer, the technical solution provided in this embodiment is as follows: the plastic film layer 9 is made of polyethylene terephthalate or biaxially oriented polypropylene, with a thickness of 12-50 μm. Polyethylene terephthalate or BOPP films within this thickness range have good flexibility and composite strength, do not affect the overall thickness and curling performance of the tape, and provide reliable surface protection.

[0029] This embodiment also provides a method for producing the aforementioned aluminum foil tape. First, multiple parallel pressure-sensitive adhesive layers 2 are coated onto a wide aluminum foil master tape. Then, release liner paper 3 of the same width is applied to form a composite master roll. During winding, a pressure roller with multiple convex rings coaxially arranged is used to roll the composite master roll. The positions of the convex rings are aligned with the two side edges of the designed aluminum foil tape 10. Through precise pressure control, the required indentations 5 are pressed out at the corresponding positions in one go, ensuring that the side edge 4 areas formed on both sides of the aluminum foil master tape are tightly bonded to the release liner paper 3. This pressure roller structure has high compatibility with traditional equipment; it can be implemented simply by replacing or modifying the pressure roller, resulting in low modification costs. The indentation processing of multiple tape rolls is completed simultaneously in one rolling process, resulting in high production efficiency and uniform indentation position and stable quality.

[0030] To efficiently slit the wide composite master roll into multiple independent smaller rolls after creasing, following the aforementioned production method, after creasing 5 is completed by a pressure roller with raised rings, the composite master roll is directly longitudinally slit at the gap between the multiple raised rings of the pressure roller. The slitting path is precisely located in the middle of two adjacent creasing 5, thereby slitting the wide master roll into multiple independent aluminum foil tape products with standard width and both sides having pressed edges 4. This process tightly integrates the creasing and slitting stations, reducing intermediate turnover and repeated unwinding and rewinding.

[0031] To ensure the coating quality of the pressure-sensitive adhesive layer 2 and meet the requirements of the reinforced structure, after the aluminum foil master tape is unwound, the mesh layer 7 can be laminated first. Then, the pressure-sensitive adhesive is uniformly coated in a striped pattern through the coating head. Immediately after coating, the release liner 3 is introduced for lamination, and then the product is placed in an oven for curing. Laminating the mesh layer 7 first enhances the strength of the substrate and facilitates subsequent processing; the striped coating saves adhesive material while ensuring the performance of the adhesive layer; and simultaneous lamination and curing of the release liner 3 effectively prevents the adhesive layer from being contaminated before curing, ensuring the bonding performance and clean appearance of the final product.

[0032] The working principle of this utility model is as follows: When the aluminum foil tape is wound, its two side edges 4 are naturally bent and tightly adhered to the release liner 3 through the indentation 5, forming a continuous sealed edge, which effectively prevents dust from entering the pressure-sensitive adhesive layer 2 from both sides of the tape; when using it, the user can easily tear off the required length of tape through the easy-tear embossing 8, and the tear is neat and not easily deformed; after tearing off the release liner 3, the pressure-sensitive adhesive layer 2 is exposed and can be directly pasted onto the target surface. The mesh layer 7 provides reinforcing support, and the plastic film layer 9 protects the aluminum foil surface. The overall structure takes into account multiple functions such as dustproof, easy to tear, and toughness, and is suitable for various industrial fields such as construction, electronics, packaging, and pipeline transportation.

[0033] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An aluminum foil tape, comprising a paper roll (1), characterized in that, The paper roll (1) is surrounded by an aluminum foil strip (10) and a pressure-sensitive adhesive layer (2) located inside the aluminum foil strip. A release liner (3) is provided on the side of the pressure-sensitive adhesive layer (2) away from the aluminum foil strip. The aluminum foil strip is integrally connected to the pressure-sensitive adhesive layer (2) along the length direction of the pressure-sensitive adhesive layer (2). The aluminum foil strip extends from both sides of the pressure-sensitive adhesive layer (2) in a direction away from the pressure-sensitive adhesive layer (2) and is provided with side edges (4). An indentation (5) is provided between the aluminum foil strip (10) and the side edge (4). The indentation (5) makes the side edge (4) adhere to the release liner (3).

2. The aluminum foil tape according to claim 1, characterized in that, The release liner (3) is silicone paper, and the silicone paper has flanges (6) on both sides, which are attached to the side edges (4).

3. The aluminum foil tape according to claim 1, characterized in that, A mesh layer (7) is also provided between the aluminum foil strip and the pressure-sensitive adhesive layer (2).

4. The aluminum foil tape according to claim 3, characterized in that, The mesh layer (7) is a glass fiber mesh or a polyethylene terephthalate mesh, with a mesh size of 2mm×2mm to 5mm×5mm.

5. The aluminum foil tape according to claim 1, characterized in that, The aluminum foil strip has easy-tear embossing (8) evenly distributed along its length, and the length of the easy-tear embossing (8) is greater than or equal to the width of the aluminum foil strip (10).

6. The aluminum foil tape according to claim 5, characterized in that, The depth of the easy-tear embossing (8) is 1 / 3 to 1 / 2 of the thickness of the aluminum foil strip (10).

7. The aluminum foil tape according to claim 1, characterized in that, The width of the side (4) is 1-3 mm.

8. The aluminum foil tape according to claim 1, characterized in that, The aluminum foil strip (10) is further coated with a plastic film layer (9) on the side away from the pressure-sensitive adhesive layer (2).

9. The aluminum foil tape according to claim 8, characterized in that, The plastic film layer (9) is made of polyethylene terephthalate or biaxially oriented polypropylene, and its thickness is 12-50 μm.

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