Easily-torn conductive cloth adhesive tape

Abstract

The utility model discloses a conductive cloth adhesive tape easy to tear, and relates to the technical field of conductive cloth. The easy-to-tear conductive cloth adhesive tape sequentially comprises a base material layer, a metal coating, a conductive adhesive layer and a release layer from bottom to top, tearing areas are arranged on the easy-to-tear conductive cloth adhesive tape at intervals, honeycomb-shaped tooth lines are arranged on the surface, attached to the conductive adhesive layer, of the release layer in the tearing areas, and the depth of the tooth lines is smaller than the thickness of the release layer; and a V-shaped notch is formed in the base material layer in the tearing area. According to the utility model, the honeycomb-shaped tooth line arranged in the tearing area accurately acts on the interface of the release layer and the conductive adhesive layer, and the local bonding strength of the adhesive tape is weakened through the honeycomb-shaped tooth line structure, so that the stripping resistance of the adhesive tape is greatly reduced when the adhesive tape is torn. Meanwhile, a V-shaped notch is formed in the corresponding position of the base material layer to form a directional stress concentration point, and the tearing path is guided to stably expand in the preset direction in cooperation with the tooth line structure.

Description

Technical Field

[0001] This utility model relates to the field of conductive cloth tape technology, and in particular to an easy-tear conductive cloth tape. Background Technology

[0002] In the fields of electromagnetic shielding and electronic connections, conductive fabric tape is widely used in precision assembly scenarios such as consumer electronics and medical devices due to its excellent flexibility and conductivity. Traditional conductive fabric tape typically uses a structure where a conductive adhesive layer is coated onto a metallized fiber substrate. To maintain sufficient mechanical strength and electromagnetic shielding effectiveness, the substrate often employs a high-density woven structure, resulting in excessively high tensile strength of the tape itself, making it extremely difficult to tear by hand.

[0003] To address the need for easy tearing, the industry has attempted to introduce pre-cut lines or weak-adhesion release layer designs. For example, V-shaped notches are pre-cut at the edges of the tape using mechanical die-cutting, or low-adhesion acrylic esters are locally coated to reduce separation resistance. However, these methods have revealed significant limitations in practical application: the pre-cut lines need to be precisely aligned with the tearing direction, and in actual operation, stress concentration can easily lead to unexpected tearing; while the weak-adhesion design reduces the overall adhesion of the adhesive layer, failing to meet the requirements for durable bonding.

[0004] Therefore, there is an urgent need to develop a conductive fabric tape that combines high conductivity reliability, precise and controllable tear properties, and environmental friendliness. Utility Model Content

[0005] The technical problem to be solved by this utility model embodiment is that existing conductive cloth tape is difficult to tear by hand and is inconvenient to use.

[0006] To address the above problems, the present invention proposes the following technical solutions:

[0007] An easy-tear conductive fabric tape comprises, from bottom to top, a substrate layer, a metal plating layer, a conductive adhesive layer, and a release layer; the easy-tear conductive fabric tape is provided with tear-off zones at intervals, and in the tear-off zones, honeycomb-shaped teeth are provided on the surface of the release layer and the conductive adhesive layer that are in contact, the depth of the teeth being less than the thickness of the release layer; in the tear-off zones, the substrate layer is provided with V-shaped notches.

[0008] A further technical solution is that the release layer has a thickness of 40-80μm, the tooth line depth is 15-25μm, and the line width is 5-20μm.

[0009] A further technical solution is that the substrate layer has protruding fiber burrs along the thickness direction, the fiber burrs penetrate the metal plating layer and the conductive adhesive layer, and extend to the release layer.

[0010] A further technical solution is that the fiber burr density within the tear zone is less than the fiber burr density outside the tear zone, and the fiber burr density within the tear zone is 50-80 fibers / mm. 2 .

[0011] A further technical solution is that the surface of the fiber burrs is coated with a metal layer, with a length of 40-60μm and a diameter of 3-8μm.

[0012] A further technical solution is that the substrate layer is a plain-weave polyester-glass fiber blended fabric with a thickness of 80-100μm.

[0013] A further technical solution is that the metal plating layer is at least one of a nickel-phosphorus alloy layer, a copper layer, or a nickel-cobalt alloy layer.

[0014] A further technical solution is that the thickness of the metal coating is 0.8-2.0 μm.

[0015] A further technical solution is that the conductive adhesive layer is an acrylate conductive adhesive.

[0016] A further technical solution is that the thickness of the conductive adhesive layer is 10-20μm.

[0017] Compared with the prior art, the technical effects achieved by the embodiments of this utility model include:

[0018] The easy-tear conductive fabric tape provided by this utility model includes, from bottom to top, a substrate layer, a metal plating layer, a conductive adhesive layer, and a release layer. The easy-tear conductive fabric tape has tear-off zones at intervals. Within these tear-off zones, honeycomb-shaped teeth are provided on the surface where the release layer and the conductive adhesive layer are in contact, and the depth of the teeth is less than the thickness of the release layer. Within the tear-off zones, the substrate layer has V-shaped notches. By precisely applying the honeycomb-shaped teeth to the interface between the release layer and the conductive adhesive layer in the tear-off zones, the local bonding strength of the tape is weakened through the honeycomb-shaped tooth structure, significantly reducing the peeling resistance when the tape is torn. Simultaneously, the V-shaped notches at corresponding positions in the substrate layer form directional stress concentration points, which, together with the tooth structure, guide the tear path to expand stably along a predetermined direction.

[0019] This invention provides an easy-tear conductive fabric tape. The operator only needs to apply a small amount of external force to obtain a clean tear along the tear zone, completely avoiding the unexpected breakage or delamination caused by stress diffusion in traditional tapes. This invention ensures precise control of the tearing process while maintaining the tape's overall conductivity and mechanical strength. It effectively resolves the contradiction between high-precision tearing and maintaining material integrity, significantly improving operational efficiency and product reliability. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model 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.

[0022] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0023] Figure 1 This is a schematic diagram of an easy-tear conductive cloth tape structure provided for an embodiment of this utility model.

[0024] Figure 2 This is a schematic diagram of the release layer structure of an easy-tear conductive cloth tape provided in an embodiment of the present invention.

[0025] Figure 3 This is a schematic diagram of the substrate layer structure of an easy-tear conductive cloth tape provided in an embodiment of the present invention.

[0026] Figure Labels

[0027] 1. Substrate layer; 2. Metal plating layer; 3. Conductive adhesive layer; 4. Release layer; 5. Toothed lines; 6. V-shaped notch; 7. Fiber burrs. Detailed Implementation

[0028] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Similar component reference numerals in the drawings represent similar components. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0029] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0030] It should also be understood that the terminology used in this specification of embodiments of the present invention is for the purpose of describing particular embodiments only and is not intended to limit the embodiments of the present invention. As used in this specification of embodiments of the present invention and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0031] See Figures 1-3 This is a schematic diagram of an easy-tear conductive fabric tape structure provided in this embodiment. As shown in the figure, the easy-tear conductive fabric tape provided by this utility model includes, from bottom to top, a substrate layer 1, a metal plating layer 2, a conductive adhesive layer 3, and a release layer 4; the easy-tear conductive fabric tape is provided with tear-off areas at intervals, and in the tear-off areas, honeycomb-shaped teeth 5 are provided on the surface of the release layer 4 and the conductive adhesive layer 3 that are in contact, and the depth of the teeth 5 is less than the thickness of the release layer 4; in the tear-off areas, the substrate layer 1 is provided with V-shaped notches 6.

[0032] In this embodiment, the honeycomb-shaped toothed lines 5 set in the tear zone act precisely on the interface between the release layer 4 and the conductive adhesive layer 3. The honeycomb-shaped toothed line 5 weakens the local bonding strength of the tape, thus significantly reducing the peeling resistance of the tape during tearing. At the same time, V-shaped notches 6 are arranged at the corresponding positions of the substrate layer 1 to form directional stress concentration points, which, together with the toothed line 5 structure, guide the tear path to expand stably in a predetermined direction.

[0033] Understandably, the tooth lines 5 can be formed by femtosecond laser etching. To facilitate tearing, the honeycomb tooth lines 5 should be arranged along the tearing direction. Within the tearing zone, the density of the tooth lines 5 is positively correlated with the ease of tearing. Those skilled in the art can set this as needed.

[0034] In some embodiments, the release layer 4 has a thickness of 40-80 μm, and the tooth 5 has a depth of 15-25 μm and a line width of 5-20 μm. This embodiment, by combining a release layer 4 of a specific thickness with a precisely controlled tooth 5 depth, significantly weakens the interfacial bonding force in the tooth 5 region while ensuring the mechanical integrity of the release layer 4. The honeycomb tooth 5 structure guides stress concentration, greatly reducing the external force required for the tearing operation and significantly improving the cleanliness of the fracture surface, thus avoiding adhesive residue or unintended delamination.

[0035] For example, in one embodiment, the release layer 4 has a thickness of 40 μm, and the toothed line 5 has a depth of 15 μm and a line width of 8 μm.

[0036] In one embodiment, the release layer 4 has a thickness of 60 μm, and the toothed line 5 has a depth of 25 μm and a line width of 8 μm.

[0037] In one embodiment, the release layer 4 has a thickness of 40 μm, and the toothed line 5 has a depth of 20 μm and a line width of 8 μm.

[0038] In some embodiments, the substrate layer 1 has protruding fiber burrs 7 along its thickness direction. These fiber burrs 7 penetrate the metal plating layer 2 and the conductive adhesive layer 3, extending to the release layer 4. The surface of the fiber burrs 7 is plated with a metal layer, with a length of 40-60 μm and a diameter of 3-8 μm. This embodiment utilizes vertically penetrating fiber burrs to establish a continuous conductive path between the metal plating layer 2 and the conductive adhesive layer 3, achieving efficient charge transfer in the thickness direction. The extension of the fiber burrs 7 to the release layer 4 enhances the mechanical interlocking between the interfaces, reducing tear resistance while maintaining overall conductive stability.

[0039] In some embodiments, the density of fiber burrs 7 within the tear-off zone is less than the density of fiber burrs 7 outside the tear-off zone, and the density of fiber burrs 7 within the tear-off zone is 50-80 burs / mm. 2 .

[0040] This embodiment actively reduces the density of fiber burrs within the tear zone to form directional weakening channels, creating a synergistic guiding effect with the honeycomb toothed structure. This design, while maintaining the high conductivity of the non-tear zone, allows the tear path to extend along a predetermined direction, eliminating the risk of uncontrollable irregular breakage.

[0041] Understandably, the spacing between adjacent tear-off zones can be set according to the bonding requirements, and this utility model does not limit this. To ensure complete tear-off, the tear-off zone should have a width of 0.1-2.0 mm, corresponding to the maximum width of the V-shaped notch 6. Within the tear-off zone, the density distribution of the toothed lines 5 can gradually decrease from the center to the periphery.

[0042] In one embodiment, the density of fiber burrs 7 in the tear zone is 50 burrs / mm. 2 The density of fiber burrs outside the tear zone is 100 burrs / mm. 2 .

[0043] In one embodiment, the density of fiber burrs 7 in the tear zone is 80 burrs / mm. 2 The density of fiber burrs outside the tear zone is 200 burrs / mm². 2 .

[0044] In one embodiment, the density of fiber burrs 7 in the tear zone is 60 burrs / mm. 2 The density of fiber burrs outside the tear zone is 150 burrs / mm. 2 .

[0045] In some embodiments, the substrate layer 1 is a plain-weave polyester-glass fiber blended fabric with a thickness of 80-100 μm.

[0046] Plain-weave polyester-glass fiber blended fabric has a tight weave structure, excellent tensile strength and dimensional stability, which enables conductive fabric tape to meet the mechanical reliability requirements of precision electronic assembly.

[0047] In one embodiment, the substrate layer 1 has a thickness of 80 μm.

[0048] In one embodiment, the substrate layer 1 has a thickness of 90 μm.

[0049] In one embodiment, the substrate layer 1 has a thickness of 100 μm.

[0050] In some embodiments, the metal plating layer 2 is at least one of a nickel-phosphorus alloy layer, a copper layer, or a nickel-cobalt alloy layer.

[0051] In one embodiment, the metal plating layer 2 is a nickel-phosphorus alloy layer with a thickness of 1.0 μm.

[0052] In one embodiment, the metal plating layer 2 is a copper layer with a thickness of 2.0 μm.

[0053] In one embodiment, the metal plating layer 2 is a combination of a 0.5 μm thick nickel-phosphorus alloy layer, a 1.0 μm thick copper layer, and a 0.5 μm thick nickel-cobalt alloy layer.

[0054] The ultra-thin metal coating helps improve the flexibility of conductive tape.

[0055] In some embodiments, the conductive adhesive layer 3 is an acrylic conductive adhesive with a thickness of 10-20 μm. The thickness of the adhesive layer affects the full coupling between the fiber burrs 7 and the adhesive layer to maintain the conductive path. If the adhesive layer is too thick, a stress buffering effect will occur, reducing the sensitivity of the tear-off response. If the adhesive layer is too thin, it is difficult to provide sufficient adhesive force.

[0056] In one embodiment, the conductive adhesive layer 3 is an acrylate conductive adhesive with a thickness of 12 μm.

[0057] In one embodiment, the conductive adhesive layer 3 is an acrylate conductive adhesive with a thickness of 16 μm.

[0058] In one embodiment, the conductive adhesive layer 3 is an acrylate conductive adhesive with a thickness of 18 μm.

[0059] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0060] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0061] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0062] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0063] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0064] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0065] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Since these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

[0066] The above description describes specific embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. An easy-tear conductive cloth tape, characterized in that, From bottom to top, it includes a substrate layer, a metal plating layer, a conductive adhesive layer, and a release layer; the easy-tear conductive cloth tape has tear-off zones at intervals, and in the tear-off zones, honeycomb-shaped teeth are provided on the surface where the release layer and the conductive adhesive layer are in contact, and the depth of the teeth is less than the thickness of the release layer; in the tear-off zones, the substrate layer has V-shaped notches.

2. The easy-tear conductive cloth tape as described in claim 1, characterized in that, The release layer has a thickness of 40-80 μm, and the tooth line depth is 15-25 μm and the line width is 5-20 μm.

3. The easy-tear conductive cloth tape as described in claim 1, characterized in that, The substrate layer has protruding fiber burrs along its thickness direction. The fiber burrs penetrate the metal plating layer and the conductive adhesive layer, and extend to the release layer.

4. The easy-tear conductive cloth tape as described in claim 3, characterized in that, The fiber burr density within the tear zone is lower than that outside the tear zone, with the fiber burr density within the tear zone being 50-80 fibers / mm. 2 .

5. The easy-tear conductive cloth tape as described in claim 3, characterized in that, The fiber burrs are coated with a metal layer, with a length of 40-60 μm and a diameter of 3-8 μm.

6. The easy-tear conductive cloth tape as described in any one of claims 3-5, characterized in that, The substrate layer is a plain-weave polyester-glass fiber blended fabric with a thickness of 80-100μm.

7. The easy-tear conductive cloth tape as described in claim 1, characterized in that, The metal coating is at least one of a nickel-phosphorus alloy layer, a copper layer, or a nickel-cobalt alloy layer.

8. The easy-tear conductive cloth tape as described in claim 1, characterized in that, The thickness of the metal coating is 0.8-2.0 μm.

9. The easy-tear conductive cloth tape as described in claim 1, characterized in that, The conductive adhesive layer is an acrylic conductive adhesive.

10. The easy-tear conductive cloth tape as described in claim 9, characterized in that, The thickness of the conductive adhesive layer is 10-20 μm.

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