Double-lead copper foil adhesive tape

Abstract

The utility model belongs to copper foil adhesive tape field discloses double guide type metal copper foil adhesive tape, the inside of first conductive layer is equipped with a plurality of disconnected groove, and the first conductive layer is divided into multiple sections by a plurality of disconnected groove, the inside of disconnected groove is fixed with first extension layer, and both ends of first extension layer are fixedly connected with the first conductive layer of disconnected groove both sides respectively, the first extension layer is in the folding state in disconnected groove under natural state, the first conductive layer is divided into multiple sections through disconnected groove, and the extension layer that is stored in disconnected groove is folded and matched, so that the tensile property of copper foil roll to material is changed from the limited elasticity of first conductive layer to the action of unfolding extension layer when the copper foil roll is subjected to the tensile force, thereby increasing the deformation ability of copper foil roll when subjected to the transverse tensile force.

Description

Technical Field

[0001] This disclosure pertains to the field of copper foil tapes, specifically relating to dual-conductive metal copper foil tapes. Background Technology

[0002] Metal copper foil tape is a type of shielding material that can be die-cut into various irregular shapes. It is an essential material in the electronics industry and is mainly used in shielding applications for transformers, mobile phones, computers, and electronic products. Double-conductive metal copper foil tape is a type of copper foil tape that is conductive on both sides.

[0003] Because the conductive material is copper foil, and copper foil itself has poor ductility, the existing dual-conductive copper foil tape has poor ductility. When pulled or strained during use, the copper foil tape is prone to breakage. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this disclosure is to provide a dual-conductive metal copper foil tape, which solves the problem that traditional copper foil tape is prone to circuit breakage when stretched due to the reliance on the limited physical extensibility of the conductive material itself.

[0005] The objective of this disclosure can be achieved through the following technical solutions:

[0006] Double-conductive copper foil tape, including:

[0007] The first conductive layer has multiple break grooves on its inner side, and the first conductive layer is divided into multiple segments by the multiple break grooves.

[0008] A first extension layer is fixed to the inner side of the disconnect groove, and the two ends of the first extension layer are respectively fixedly connected to the first conductive layers on both sides of the disconnect groove.

[0009] In its natural state, the first extended layer is folded within the disconnected groove.

[0010] In some disclosures, the length of the first extended layer in its unfolded state is greater than or equal to the maximum length of the open slot after the gap is increased.

[0011] In some disclosures, the maximum elastic elongation of the elastic layer per unit length is less than the elongation of the first extension layer.

[0012] In some disclosures, an elastic layer is fixed to the lower end face of the first conductive layer, and the first conductive layer and the first extension layer are symmetrically disposed with respect to the elastic layer, including the first conductive layer and the second extension layer.

[0013] In some disclosures, the middle portion of both the first extended layer and the middle portion of the second extended layer are fixedly connected to the elastic layer.

[0014] In some disclosures, the middle portions of the first extended layer, the elastic layer, and the second extended layer are sewn together by non-conductive fiber threads.

[0015] In some publications, the non-conductive fiber threads are described as aramid fibers, polyester fibers, or glass fibers.

[0016] In some disclosures, the elastic layer is a thermoplastic polyurethane film, a silicone film, a SEBS elastomer, or a polyurethane elastomer film.

[0017] In some disclosures, an adhesive layer is coated between the first conductive layer, the elastic layer, and the second conductive layer, and the adhesive layer is broken in the area to which the break groove belongs.

[0018] The explanations of the nouns, conjunctions, or adjectives used in the above technical solutions are as follows:

[0019] A fixed connection refers to a connection in which parts or components are fixed in place and there is no relative movement between them;

[0020] A rotating connection is a connection between parts that allows the parts to rotate relative to each other.

[0021] Threaded connections are a type of detachable fixed connection with advantages such as simple structure, reliable connection, and convenient assembly and disassembly. They are widely used in mechanical engineering and connection structure fields.

[0022] A sliding connection is a connection between parts that allows the parts to slide against each other.

[0023] The beneficial effects of this disclosure are:

[0024] By dividing the first conductive layer into multiple segments through the disconnecting groove, and cooperating with the folded extension layer stored in the disconnecting groove, the tensile properties of the copper foil film roll under tensile force change from relying on the limited elasticity of the first conductive layer to the action of unfolding the extension layer, thereby increasing the deformation capacity of the copper foil film roll under lateral tensile force.

[0025] When the copper foil tape is stretched, it changes from a folded state to a stretched state. In both states, the two ends of the extended layer are always connected to the first conductive layer on both sides of the disconnect groove, and the smoothness of the conductive path between multiple conductive layers is maintained. In addition, the first extended layer can make up for the physical gap caused by the increase in the gap of the disconnect groove during the unfolding process. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the longitudinal section structure of an embodiment of this disclosure;

[0028] Figure 2 This is an embodiment of the present disclosure. Figure 1 Enlarged structural diagram at point A in the diagram;

[0029] Figure 3 This is a partial top view schematic diagram of an embodiment of this disclosure;

[0030] Figure 4 This is a schematic diagram of the overall structure of an embodiment of this disclosure.

[0031] In the figure: 1. First conductive layer; 2. Disconnect groove; 3. First extension layer; 4. Elastic layer; 5. Second conductive layer; 6. Second extension layer; 7. Fiber filament; 8. Adhesive layer. Detailed Implementation

[0032] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0033] Please refer to Figures 1 to 4 Double-conductive copper foil tape, including:

[0034] The first conductive layer 1 has multiple disconnect grooves 2 on its inner side, and the first conductive layer 1 is divided into multiple segments by the multiple disconnect grooves 2.

[0035] The inner side of the disconnect groove 2 is fixed with a first extension layer 3, and the two ends of the first extension layer 3 are respectively fixedly connected to the first conductive layer 1 on both sides of the disconnect groove 2.

[0036] In its natural state, the first extended layer 3 is folded within the disconnected groove 2.

[0037] In its natural state (i.e., when not subjected to external force), the first conductive layer 1 maintains its planar configuration. At this time, the first extension layer 3 disposed in the disconnect groove 2 is stored inside the disconnect groove 2 in a folded form to reduce the volume occupied by the first extension layer 3.

[0038] When the aluminum foil tape is subjected to a lateral tensile force along its length (i.e., transverse direction), the force causes the entire aluminum foil tape to stretch towards both ends. Because the elastic layer 4 itself has good deformation force, the elastic layer 4 extends towards both sides. Meanwhile, the first conductive layer 1 is physically divided into a first part and a second part at the disconnect groove 2. These two parts move in opposite directions under the tensile force, increasing the gap in the disconnect groove 2.

[0039] During this process, the extension layer is pulled outward from within the disconnection groove 2 and extends to both sides, dynamically bridging the two sides of the enlarged disconnection groove 2, and maintaining the continuity and integrity of the conductive path of the first conductive layer 1 on both sides of the disconnection groove 2 while achieving structural extension.

[0040] Please refer to Figures 1 to 3 The length of the first extension layer 3 in the unfolded state is greater than or equal to the maximum length of the opening groove 2 after the gap is increased.

[0041] If the length of the first extended layer 3 in the unfolded state is less than the length after the gap of the disconnected groove 2 is increased, it will cause the end of the extended layer connected to the first conductive layer 1 to break off, thereby destroying the integrity of the conductive path.

[0042] Therefore, the length of the first extension layer 3 after straightening is the maximum length that the disconnected groove 2 can be stretched to.

[0043] Please refer to Figures 1 to 3 Within a unit length, the maximum elastic elongation of the elastic layer 4 is less than the elongation of the first extension layer 3.

[0044] When the conductive tape is subjected to lateral tension, the elastic layer 4 and the disconnect groove 2 extend to both sides simultaneously. The conductive tape first stops its elastic deformation because the elastic layer 4 reaches its elastic limit and cannot continue to stretch. Since the elongation capacity of the first extension layer 3 is greater than the deformation capacity of the elastic layer 4, the first extension layer 3 is still in a non-tight state. At this time, the stress generated by the external tension of the conductive tape is concentrated at the elastic layer 4, which can preferentially protect the integrity of the conductive path between the two ends of the first extension layer 3 and the first conductive layer 1.

[0045] Please refer to Figure 1 An elastic layer 4 is fixed to the lower end face of the first conductive layer 1, and the first conductive layer 1 and the first extension layer 3 are symmetrically arranged with respect to the elastic layer 4, with the first conductive layer 1 and the second extension layer 6.

[0046] The conductive layers on both the top and bottom sides allow the conductive tape to conduct electricity independently on both ends, thus preserving the conductivity of both sides of the copper foil tape.

[0047] Please refer to Figure 2 The middle part of the first extended layer 3 and the middle part of the second extended layer 6 are both fixedly connected to the elastic layer 4; thereby increasing the stability of the connection between the first extended layer 3, the second extended layer 6 and the first conductive layer 1 and the second conductive layer 5.

[0048] When the first conductive layer 1 on both sides of the disconnect groove 2 moves backward, the stress is concentrated on the elastic layer 4 and the connection between the elastic layer 4 and the first extension layer 3 and the second extension layer 6. At this time, even if the first extension layer 3 separates from the elastic layer 4, the two ends of the first extension layer 3 or the second extension layer 6 are still connected to their corresponding conductive layers, thereby maintaining the smoothness of the conductive circuit.

[0049] Please refer to Figure 2 The first extended layer 3, the elastic layer 4, and the second extended layer 6 are sewn together at their middle portions by non-conductive fiber threads 7. These non-conductive fiber threads 7 pass sequentially through the middle portions of the first extended layer 3, the elastic layer 4, and the second extended layer 6, and are sewn together. This connection improves the stability between the first extended layer 3, the second extended layer 6, and the elastic layer 4, and reduces the possibility of twisting and deformation of the first extended layer 3 and the second extended layer 6 due to lateral tensile forces.

[0050] The non-conductive fiber thread 7 is made of aramid fiber, polyester fiber, or glass fiber. This type of fiber, such as aramid, polyester, or glass fiber, possesses tensile strength and excellent insulation properties. It can stably fix the first extended layer 3 and the second extended layer 6 to the outside of the elastic layer 4 while preventing the first extended layer 3 and the second extended layer 6 from conducting electricity through the fiber thread 7. This helps reduce the possibility of short circuits between the first conductive layer 1 and the second conductive layer 5.

[0051] The elastic layer 4 is a thermoplastic polyurethane film, silicone film, SEBS elastomer, or polyurethane elastomer film. The material of the elastic layer 4 is thermoplastic polyurethane or silicone rubber. Thermoplastic polyurethane or silicone rubber itself has a good elastic recovery rate and can maintain stable performance in repeated stretching and recovery cycles, and becomes the matrix of the aluminum foil tape, providing reliable elastic support and cushioning protection for the first conductive layer 1 and the second conductive layer 5.

[0052] Please refer to Figure 2 An adhesive layer 8 is coated between the first conductive layer 1, the elastic layer 4, and the second conductive layer 5, and the adhesive layer 8 is broken in the area to which the disconnect groove 2 belongs.

[0053] During processing, an adhesive layer 8 is coated on both sides of the first conductive layer 1 and the second conductive layer 5. When the first conductive layer 1 and the second conductive layer 5 are bonded to both sides of the elastic layer 4 in a segmented manner, the adhesive layer 8 forms a discontinuous adhesive layer 8 at the break groove 2. This is to prevent the extended layer from being fixed in a folded shape when the adhesive is applied to the folded extended layer, so that it is difficult to flatten after the aluminum foil tape is stretched, overcoming the stickiness of the adhesive at the fold.

[0054] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," 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 this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer 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.

[0055] The foregoing has shown and described the basic principles, main features, and advantages of this disclosure. Those skilled in the art should understand that this disclosure is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this disclosure. Various changes and modifications can be made to this disclosure without departing from its spirit and scope, and all such changes and modifications fall within the scope of this disclosure as claimed.

Claims

1. A double-conductive copper foil tape, characterized in that, include: The first conductive layer (1) has multiple disconnect grooves (2) on its inner side, and the first conductive layer (1) is divided into multiple segments by the multiple disconnect grooves (2); The inner side of the disconnect groove (2) is fixed with a first extension layer (3), and the two ends of the first extension layer (3) are respectively fixedly connected to the first conductive layer (1) on both sides of the disconnect groove (2). In its natural state, the first extended layer (3) is folded within the disconnected groove (2).

2. The double-conductive copper foil tape according to claim 1, characterized in that, The length of the first extension layer (3) in the unfolded state is greater than or equal to the maximum length of the gap of the disconnected groove (2) after the gap is increased.

3. The double-conductive copper foil tape according to claim 2, characterized in that, An elastic layer (4) is fixed to the lower end face of the first conductive layer (1). The first conductive layer (1) and the first extension layer (3) are symmetrically arranged with respect to the elastic layer (4) and the first conductive layer (1) and the second extension layer (6).

4. The double-conductive copper foil tape according to claim 3, characterized in that, Within a unit length, the maximum elastic elongation of the elastic layer (4) is less than the elongation of the first extension layer (3).

5. The double-conductive copper foil tape according to claim 4, characterized in that, The middle part of the first extension layer (3) and the middle part of the second extension layer (6) are both fixedly connected to the elastic layer (4).

6. The double-conductive copper foil tape according to claim 5, characterized in that, The middle parts of the first extension layer (3), the elastic layer (4) and the second extension layer (6) are sewn together by non-conductive fiber threads (7).

7. The double-conductive copper foil tape according to claim 1, characterized in that, The non-conductive fiber thread (7) is an aramid fiber thread, a polyester fiber thread, or a glass fiber thread.

8. The double-conductive copper foil tape according to claim 3, characterized in that, The elastic layer (4) is a thermoplastic polyurethane film, silicone film, SEBS elastomer, or polyurethane elastomer film.

9. The double-conductive copper foil tape according to claim 6, characterized in that, An adhesive layer (8) is coated between the first conductive layer (1), the elastic layer (4), and the second conductive layer (5), and the adhesive layer (8) is broken in the area to which the disconnect groove (2) belongs.

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