Composite adhesive tape and method of using same

Abstract

The application relates to a composite adhesive tape and a use method thereof. The composite adhesive tape comprises a base body, a first adhesive part and a second adhesive part, the base body comprises a first base part and a second base part which are connected to each other along an extension direction of the base body; the first adhesive part is arranged on at least one side of the first base part; the second adhesive part is arranged on at least one side of the base body, one end of the second adhesive part on the same side of the first adhesive part is connected to the first adhesive part, the other end of the second adhesive part extends to a preset position on the second base part, and the adhesion of the second adhesive part needs to be released. The scheme provided by the application can realize the sealing, unsealing and splicing of materials by using the same adhesive tape, improves the material replacement efficiency and reduces the production cost.

Description

Technical Field

[0001] This application relates to the field of adhesive tape technology, and more particularly to composite adhesive tapes and methods of using them. Background Technology

[0002] In the manufacturing process, there are often operations that involve changing materials, such as film rolls and electrode rolls.

[0003] In related technologies, when replacing materials, it is generally necessary to first manually remove the tape sealing the materials to open them; then, the new materials are connected to the old materials to complete the roll change.

[0004] However, in the above replacement methods, the tape used to seal the material will lose its adhesiveness after removal and can no longer be used as a mating tape, which means that a new tape needs to be replaced when mating, which greatly affects the material replacement efficiency and production cost. Summary of the Invention

[0005] To address or partially address the problems existing in related technologies, this application provides a composite tape and its application method, which enables the sealing, unsealing, and docking of materials using the same tape, thereby improving material changeover efficiency and reducing production costs.

[0006] The first aspect of this application provides a composite tape, comprising:

[0007] The matrix includes a first base and a second base that are interconnected along its extension direction;

[0008] A first adhesive portion is disposed on at least one side of the first base;

[0009] The second adhesive portion is disposed on at least one side of the substrate. One end of the second adhesive portion located on the same side as the first adhesive portion is connected to the first adhesive portion, and the other end extends to a predetermined position on the second base. The adhesiveness of the second adhesive portion is generated by being released.

[0010] As an optional embodiment, at least a portion of the first region of the second adhesive portion is made of an activating material that can generate adhesiveness upon activation.

[0011] As an optional embodiment, the activation material includes at least one of thermal adhesive, photosensitive adhesive, electrosensitive adhesive, and pressure-sensitive adhesive materials.

[0012] As an optional embodiment, a third adhesive portion is detachably connected to at least a portion of a third region adjacent to the first adhesive portion.

[0013] As an optional embodiment, the third adhesive portion includes a first bottom layer disposed on the second adhesive portion, and a first adhesive layer disposed on the side of the first bottom layer away from the second adhesive portion.

[0014] As an optional embodiment, at least a portion of the first region of the second adhesive portion is made of an activating material that can generate adhesiveness under activation; and a third adhesive portion is detachably connected to at least a portion of the third region of the second adhesive portion near the first adhesive portion.

[0015] As an optional embodiment, a third adhesive portion is detachably connected to at least a third region of the second adhesive portion near the first adhesive portion; and at least a second region of the second adhesive portion away from the first adhesive portion includes a second adhesive layer disposed on at least one side of the substrate, and a first isolation layer disposed on the side of the second adhesive layer away from the substrate; the first isolation layer can be separated from the second adhesive layer under the action of external force to release the second adhesive layer.

[0016] As an optional embodiment, the first adhesive portion includes a first adhesive segment and a second adhesive segment connected to each other along its extension direction, and the second adhesive portion located on the same side of the first adhesive portion is connected to the second adhesive segment.

[0017] As an optional embodiment, the first viscous segment and the second viscous segment may have the same or different viscosity.

[0018] As an optional embodiment, the extension length of the first viscous segment is not less than the extension length of the second viscous segment.

[0019] As an optional embodiment, the first adhesive portion includes an adhesive material coated on at least one side of the first base, the adhesive material being prepared from a material that generates adhesiveness upon activation, or from a material that is inherently self-adhesive.

[0020] As an optional embodiment, the tape further includes a magnetic element disposed in the second base portion, such that the second base portion can be bent away from the first adhesive portion under magnetic force.

[0021] As an optional embodiment, the tape further includes a third adhesive layer disposed on the side of the substrate away from the first adhesive portion, and a second release layer disposed on the side of the third adhesive layer away from the substrate.

[0022] A second aspect of this application provides a method for using the aforementioned composite tape, comprising:

[0023] The first adhesive portion is adhered to the overlapping area of ​​the first object;

[0024] An external force is applied to the second base to bend the second base away from the first adhesive portion, thereby causing the end of the first adhesive portion near the second base to detach from the overlapping area D;

[0025] Release the adhesiveness of the second adhesive portion and stick the adhesive portion that has generated the adhesiveness onto the second object.

[0026] As an optional embodiment, the step of attaching the first adhesive portion to the overlapping area of ​​the first object includes:

[0027] The first adhesive portion is attached to the outermost layer of the first object at one end away from the second base, and the first adhesive portion is attached to the overlapping layer of the first object and the outermost layer at one end near the second base.

[0028] As an optional embodiment, applying an external force to the second base includes applying an adsorption force and / or a clamping force to the second base.

[0029] As an optional embodiment, the adsorption force includes at least one of negative pressure, magnetic attraction, and electrostatic force.

[0030] As an optional embodiment, at least a portion of the first region of the second adhesive portion is made of an activating material, which can generate adhesiveness upon activation, and releasing the adhesiveness of the second adhesive portion includes:

[0031] The activation material of the second viscous portion is activated by at least one of thermal excitation, photoexcitation, electrical excitation, and pressure excitation, thereby making the activation material viscous.

[0032] As an optional embodiment, a third adhesive portion is detachably attached to at least a portion of a third region adjacent to the first adhesive portion; releasing the adhesiveness of the second adhesive portion includes:

[0033] Applying an external force causes the second base to bend away from the first adhesive portion, while simultaneously causing the third region of the second adhesive portion to separate from the third adhesive portion.

[0034] As an optional embodiment, at least a portion of the second adhesive portion in a second region away from the first adhesive portion includes a second adhesive layer disposed on at least one side of the substrate, and a first insulating layer disposed on the side of the second adhesive layer away from the substrate; releasing the adhesiveness of the second adhesive portion includes:

[0035] An external force is applied to separate the first insulating layer from the second adhesive layer.

[0036] The technical solution provided in this application may include the following beneficial results:

[0037] The composite tape of this application has three functions: first, sealing materials, where the first adhesive portion can be adhered to the overlapping area of ​​the materials to close the material ends; second, opening materials, where by applying external force to the second adhesive portion, a portion of the first adhesive portion near the second base detaches from the material, while the portion away from the second base remains adhered to the material, thus opening the material ends; and third, splicing, where the adhesiveness of the second adhesive portion can be released first, causing it to become sticky again, and then the second adhesive portion can be adhered to new material to achieve material splicing. Therefore, the composite tape of this application embodiment has secondary adhesion, and can simultaneously perform the functions of sealing, opening, and splicing, improving material change efficiency and reducing production costs.

[0038] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0039] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0040] Figure 1(a) is a schematic diagram of one structure of an adhesive tape for splicing rolls, comprising only the non-adhesive portion, as shown in an embodiment of this application.

[0041] Figure 1(b) is a schematic diagram of a second structure of an adhesive tape for splicing rolls, showing only the non-adhesive portion, according to an embodiment of this application.

[0042] Figure 1(c) is a schematic diagram of the three structures of an adhesive tape for splicing a roll, showing only the non-adhesive portion, according to an embodiment of this application.

[0043] Figure 2(a) is a schematic diagram of one structure of an adhesive tape for splicing a roll, comprising only the second adhesive portion, as shown in an embodiment of this application.

[0044] Figure 2(b) is a schematic diagram of two structures of an adhesive tape for splicing a roll, showing only the second adhesive portion, according to an embodiment of this application.

[0045] Figure 3(a) is a schematic diagram of one of the structures of an adhesive tape for splicing a roll of material, which includes a non-adhesive portion and a second adhesive portion, as shown in an embodiment of this application.

[0046] Figure 3(b) is a schematic diagram of one of the structures of an adhesive tape for splicing a roll of material, which includes a non-adhesive portion and a second adhesive portion, as shown in an embodiment of this application.

[0047] Figure 3(c) is a schematic diagram of one of the structures of an adhesive tape for splicing a roll of material, which includes both a non-adhesive portion and a third adhesive portion, as shown in an embodiment of this application.

[0048] Figure 4(a) is a schematic diagram of a structure in which the first tack portion of the tape used for splicing rolls is made of an activating material, as shown in an embodiment of this application.

[0049] Figure 4(b) is a schematic diagram of the second structure of the first tack portion of the tape used for splicing rolls, as shown in an embodiment of this application, which is made of an activating material;

[0050] Figure 5 Figure 1(a) shows a schematic diagram of the structure with added magnetic components;

[0051] Figure 6 Figure 2(a) shows a schematic diagram of the structure with added magnetic components;

[0052] Figure 7 Figure 3(a) shows a schematic diagram of the structure with added magnetic components;

[0053] Figure 8 Figure 3(b) shows a schematic diagram of the structure with added magnetic components;

[0054] Figure 9 Figure 4(a) shows a schematic diagram of the structure with added magnetic components;

[0055] Figure 10(a) is a schematic diagram of a tape sealing roll in use, showing only the non-adhesive portion of the tape according to an embodiment of this application;

[0056] Figure 10(b) is a schematic diagram showing the second base of an adhesive tape containing only a non-adhesive portion being subjected to external force during use, according to an embodiment of this application.

[0057] Figure 10(c) is a schematic diagram showing that the first adhesive portion of an adhesive tape containing only a non-adhesive portion detaches from the outer roll layer during use, according to an embodiment of this application.

[0058] Figure 10(d) is a schematic diagram showing that, in the use of an adhesive tape containing only a non-adhesive portion, the non-adhesive portion is activated and spliced, according to an embodiment of this application.

[0059] Figure 11(a) is a schematic diagram of a tape sealing roll in use, showing only the second tacky portion of the tape according to an embodiment of this application;

[0060] Figure 11(b) is a schematic diagram showing the second base of an adhesive tape containing only the second adhesive portion being subjected to external force during use, according to an embodiment of this application.

[0061] Figure 11(c) is a schematic diagram showing that, in use, the first adhesive portion and the second adhesive portion of an adhesive tape containing only the second adhesive portion are separated.

[0062] Figure 11(d) is a schematic diagram of the tape splicing process in use, showing only the second adhesive portion of the tape according to an embodiment of this application.

[0063] Figure label:

[0064] 1. Substrate; 10. First base; 11. Second base; 2. First adhesive portion; 20. First adhesive segment; 21. Second adhesive segment; 3. Second adhesive portion; 30. Second adhesive layer; 31. First isolation layer; A. First region; B. Second region; C. Third region; 4. Third adhesive portion; 40. First bottom layer; 41. First adhesive layer; 5. First object; 50. Outermost layer; 51. Overlapping layer; D. Overlapping area; 6. Magnetic component; 7. Third adhesive layer; 8. Second isolation layer. Detailed Implementation

[0065] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this application more thorough and complete, and to fully convey the scope of this application to those skilled in the art.

[0066] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0067] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not 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 application.

[0068] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed 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 application according to the specific circumstances.

[0069] In related technologies, when changing materials, it is generally necessary to first manually remove the tape sealing the material to open it; then, the new material is joined with the old material to complete the roll change. However, in the above replacement method, the tape used to seal the material loses its adhesiveness after removal and can no longer be used as the joining tape, resulting in the need to replace it with a new tape during joining, which greatly affects the material change efficiency and production costs.

[0070] To address the aforementioned issues, this application provides a composite tape that enables the sealing, unsealing, and docking of materials using the same tape, thereby improving material changeover efficiency and reducing production costs.

[0071] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0072] Referring to Figures 1(a) to 3(c), this application embodiment provides a composite tape, including a substrate 1, the substrate 1 including a first base 10 and a second base 11 connected to each other along its extension direction; the composite tape also includes a first adhesive portion 2 and a second adhesive portion 3, the first adhesive portion 2 is disposed on at least one side of the first base 10; the second adhesive portion 3 is disposed on at least one side of the substrate 1, one end of the second adhesive portion 3 located on the same side as the first adhesive portion 2 is connected to the first adhesive portion 2, and the other end extends to a preset position on the second base 11, and the adhesiveness of the second adhesive portion 3 needs to be released to generate it.

[0073] The adhesive tape in this embodiment can be used for connecting old and new materials during material changeover. The substrate 1, acting as the tape's skeleton, provides support while being thin, ensuring overall tape flexibility while minimizing the increase in roll thickness. The substrate 1 can be made of film-like materials, such as polyester (PET), polypropylene (PP), and polyvinyl chloride (PVC), and this application does not limit its application to these materials.

[0074] This application does not limit the conditions under which the first adhesive portion 2 becomes adhesive; it can be inherently adhesive or become adhesive upon release. However, when using adhesive tape, the first adhesive portion 2 must be adhesive. If the first adhesive portion 2 needs to be released to become adhesive, then the first adhesive portion 2 must be released before use.

[0075] There are several ways to arrange the first adhesive portion 2 and the second adhesive portion 3. For example, the first adhesive portion 2 and the second adhesive portion 3 can be arranged on the same side of the substrate 1, and / or, the first adhesive portion 2 and the second adhesive portion 3 can be arranged on opposite sides of the substrate 1. When the first adhesive portion 2 and the second adhesive portion 3 are arranged on the same side of the substrate 1, the first adhesive portion 2 is arranged corresponding to the first base 10, one end of the second adhesive portion 3 is connected to the first adhesive portion 2, and the other end extends to a preset position on the second base 11. When the first adhesive portion 2 and the second adhesive portion 3 are arranged on opposite sides of the substrate 1, the first adhesive portion 2 is arranged corresponding to the first base 10, and the position of the second adhesive portion 3 is not limited. The preset position can be any position on the second base 11, such as the middle of the second base 11, the end of the second base 11 away from the first base 10, etc., and this application does not limit this.

[0076] In this embodiment, the conditions for generating the adhesiveness of the second adhesive portion 3 are limited; it must be released to generate adhesiveness. That is, in this embodiment, the adhesiveness of the second adhesive portion 3 can be released at appropriate usage points according to the actual usage scenario. For example, when using tape, the first adhesive portion 2 is initially adhesive and can be pasted onto the overlapping area of ​​materials for sealing. The adhesiveness of the second adhesive portion 3 is not released, and it does not have adhesiveness with the material. When changing materials, the tape is first opened, and external force is applied to the second adhesive portion 3 to cause a portion of the first adhesive portion 2 near the second base 11 to detach from the material, while the portion away from the second base 11 remains adhered to the material. When docking materials, the adhesiveness of the second adhesive portion 3 can be released first, causing it to become adhesive, and then the second adhesive portion 3 can be pasted onto the new material to achieve docking.

[0077] As can be seen from the above, the composite tape of this application embodiment has three functions: first, sealing the material, where the first adhesive part 2 can be adhered to the overlapping area of ​​the material to close the material end; second, opening the material, where by applying external force to the second adhesive part 3, a portion of the first adhesive part 2 near the second base 11 detaches from the material, while a portion away from the second base 11 remains adhered to the material, thus opening the material end; and third, connecting the tape, where the adhesiveness of the second adhesive part 3 can be released first to make it sticky, and then the second adhesive part 3 can be adhered to the new material to achieve material connection. Therefore, the composite tape of this application embodiment has secondary adhesion and can simultaneously perform the functions of sealing, opening, and connecting the tape, improving material change efficiency and reducing production costs.

[0078] In this embodiment, the second adhesive portion 3 has various forms, such as the following:

[0079] At least a portion of the first region A of the first and second viscous parts 3 is made of an activating material that can generate viscosity under activation.

[0080] Referring to Figures 1(a) to 1(c), when the second adhesive part 3 is in the first form, the first adhesive part 2 is adhered to the overlapping area of ​​the material when sealing the material; when opening the material, the second base 11 can move away from the first adhesive part 2 under the action of external force, so as to drive the end of the first adhesive part 2 close to the second base 11 to detach from the overlapping area; when the material is docked, the activation material of the second adhesive part 3 is activated, the adhesiveness of the first area A of the second adhesive part 3 is released, and then the first area A of the second adhesive part 3 is adhered to the new material.

[0081] Preferably, the activating material includes at least one of thermal adhesive, photosensitive adhesive, electrosensitive adhesive, and pressure-sensitive adhesive.

[0082] In this application embodiment, the activation method includes at least one of thermal excitation, photoexcitation, electrical excitation, and pressure excitation. Specifically, for example, when the activating material is a thermosensitive adhesive, thermal excitation can be used to stimulate the thermosensitive adhesive, making it viscous. The thermosensitive adhesive, photosensitive adhesive, electrosensitive adhesive, and pressure-sensitive adhesive materials in this application embodiment can all be materials known to those skilled in the art, and this application does not further limit the specific types of materials.

[0083] The second type, the second adhesive portion 3 is detachably connected to at least a portion of the third region C near the first adhesive portion 2, the third adhesive portion 4.

[0084] Referring to Figures 2(a) to 2(b), when the second adhesive part 3 is in the second form, when sealing the material, the first adhesive part 2 and the third adhesive part 4 are adhered to the overlapping area of ​​the material; when unsealing the material, the second base 11 can move away from the first adhesive part 2 under the action of external force, so as to drive the end of the first adhesive part 2 close to the second base 11 to detach from the overlapping area, and the third region C of the second adhesive part 3 separates from the third adhesive part 4, releasing the adhesiveness of the third region C of the second adhesive part 3; when the material is joined, the third region C of the second adhesive part 3 is adhered to the new material.

[0085] Preferably, referring to Figures 2(a) to 3(c), the third adhesive portion 4 includes a first bottom layer 40 disposed on the second adhesive portion 3, and a first adhesive layer 41 disposed on the side of the first bottom layer 40 away from the second adhesive portion.

[0086] Since the tape contains a third adhesive portion 4, the third adhesive portion 4 needs to be adhered to the material when sealing it. Therefore, a first adhesive layer 41 is provided to adhere the material. When unsealing the material, the third region C of the second adhesive portion 3 needs to be separated from the first adhesive layer 41. Since both the third region C and the first adhesive layer 41 are adhesive, in order to prevent the third region C from being difficult to separate from the first adhesive layer 41, this embodiment of the application provides a non-adhesive first bottom layer 40 between the third region C and the first adhesive layer 41, which makes it easier to separate the third region C from the first adhesive layer 41.

[0087] The first bottom layer 40 serves as the framework for the third adhesive portion 4. While providing support, its thickness should be thin, ensuring the overall flexibility of the third adhesive portion 4. Even if it remains on the roll, its impact on the roll thickness is negligible. The first bottom layer 40 can be made of film-like materials, such as polyester PET, polypropylene PP, and polyvinyl chloride PVC, etc. This application does not limit its application to these materials.

[0088] In addition, when using adhesive tape, the third adhesive portion 4 and the second adhesive portion 3 in this embodiment can be an integral structure or separate structures. When they are separate structures, the third adhesive portion 4 can be pasted onto the material in advance, and then the third region C of the second adhesive portion 3 can be pasted onto the third adhesive portion 4. When they are an integral structure, the second adhesive portion 3 and the third adhesive portion 4 can be directly pasted onto the material as a whole.

[0089] The third type is a combination of the first and second types. At least a portion of the first region A of the second adhesive part 3 is made of an activating material, which can generate adhesiveness under activation. Furthermore, a third adhesive part 4 is detachably connected to at least a portion of the third region C of the second adhesive part 3 near the first adhesive part 2.

[0090] Referring to Figure 3(a), when the second adhesive part 3 is in the third form, when sealing the material, the first adhesive part 2 and the third adhesive part 4 are adhered to the overlapping area of ​​the material; when unsealing the material, the second base 11 can move away from the first adhesive part 2 under the action of external force, so as to drive the end of the first adhesive part 2 close to the second base 11 to detach from the overlapping area, and the third region C of the second adhesive part 3 separates from the third adhesive part 4, releasing the adhesiveness of the third region C of the second adhesive part 3; when the material is docked, the activation material of the second adhesive part 3 is activated, the adhesiveness of the second adhesive part 3 is released, and then the third region C and the first region A of the second adhesive part 3 are adhered to the new material.

[0091] Fourthly, at least a portion of the second region B of the second adhesive portion 3 includes a second adhesive layer 30 disposed on at least one side of the substrate 1, and a first release layer 31 disposed on the side of the second adhesive layer 30 away from the substrate 1; the first release layer 31 can be separated from the second adhesive layer 30 under external force to release the second adhesive layer 30. A third adhesive portion 4 is detachably connected to at least a portion of the third region C of the second adhesive portion 3 near the first adhesive portion 2.

[0092] Referring to Figures 3(b) and 3(c), when the second adhesive part 3 is in the fourth form, when sealing the material, the first adhesive part 2 and the third adhesive part 4 are adhered to the overlapping area of ​​the material; when unsealing the material, the second base 11 can move away from the first adhesive part 2 under the action of external force, so as to drive the end of the first adhesive part 2 close to the second base 11 to detach from the overlapping area, and the third region C of the second adhesive part 3 separates from the third adhesive part 4, releasing the adhesiveness of the third region C of the second adhesive part 3; when the material is joined, the first isolation layer 31 is separated from the second adhesive layer 30 under the action of external force, so as to release the second adhesive layer 30, and then the third region C of the second adhesive part 3 and the second adhesive layer 30 are adhered to the new material.

[0093] In this embodiment, when the first region A, the second region B, and the third region C exist individually, they can all be the entire area on one side of the second adhesive portion 3. When the first region A and the third region C exist simultaneously, the first region A is located away from the first adhesive portion 2, and the third region C is located close to the first adhesive portion 2; or, the first region A is located close to the first adhesive portion 2, and the third region C is located away from the first adhesive portion 2. When the second region B and the third region C exist simultaneously, the second region B is located away from the first adhesive portion 2, and the third region C is located close to the first adhesive portion 2; or, the second region B is located close to the first adhesive portion 2, and the third region C is located away from the first adhesive portion 2.

[0094] As an optional embodiment, referring to Figures 2(a) to 3(c), the first adhesive portion 2 includes a first adhesive segment 20 and a second adhesive segment 21 connected to each other along its extension direction, and the second adhesive portion 3 located on the same side of the first adhesive portion 2 is connected to the second adhesive segment 21.

[0095] In this embodiment, the first adhesive portion 2 is divided into a first adhesive segment 20 and a second adhesive segment 21. When sealing the material, the first adhesive segment 20 is adhered to the outermost layer of the material, and the second adhesive segment 21 is adhered to the overlapping layer where the material and the outermost layer are superimposed. When opening the tape, the second base 11 can move away from the first adhesive portion 2 under the action of external force, so as to drive the second adhesive segment 21 to detach from the overlapping layer, while the first adhesive segment 20 remains adhered to the outermost layer of the material.

[0096] Preferably, the first viscous segment 20 and the second viscous segment 21 have the same viscosity.

[0097] In this embodiment, the first adhesive segment 20 and the second adhesive segment 21 have the same adhesiveness, which can realize the integral molding of the first adhesive segment 20 and the second adhesive segment 21, thereby improving the production efficiency of the tape.

[0098] Preferably, the first viscous segment 20 and the second viscous segment 21 have different viscosities.

[0099] In this embodiment, the first adhesive segment 20 and the second adhesive segment 21 have different adhesive properties, with the first adhesive segment 20 having a greater adhesive property than the second adhesive segment 21. This ensures that when the material is unsealed, the first adhesive segment 20 adheres firmly to the material, while the second adhesive segment 21 can easily detach from the material under external force, leaving no adhesive residue on the material.

[0100] For example, the first viscous segment 20 and the second viscous segment 21 can be made of materials with different viscous properties, or the viscous properties of the first viscous segment 20 and the second viscous segment 21 can be made different by setting the coating area of ​​the adhesive material on the first viscous segment 20 and the second viscous segment 21.

[0101] Preferably, the extension length of the first viscous segment 20 is not less than the extension length of the second viscous segment 21.

[0102] In this embodiment, the second adhesive segment 21 is used for pre-adhesion of the material. When the material is unsealed, the second adhesive segment 21 needs to be easily detached from the material. Therefore, the extension length of the second adhesive segment 21 can be smaller than the extension length of the first adhesive segment 20, so as to achieve easy separation of the second adhesive segment 21.

[0103] Optionally, referring to Figures 4(a) and 4(b), the first adhesive portion 2 includes an adhesive material coated on at least one side of the first base 10, the adhesive material being made of a material that generates adhesiveness under activation, or being made of a material that is self-adhesive.

[0104] In this embodiment, the first adhesive portion 2 can be made of a material that is inherently adhesive, such as rubber adhesive, acrylic adhesive, silicone adhesive, hot melt adhesive, epoxy resin adhesive, etc., and it is adhesive without needing to be treated before use; or it can be made of a material that needs to be activated to become adhesive, such as at least one of heat-sensitive adhesive, photosensitive adhesive, electrosensitive adhesive and pressure-sensitive adhesive materials, and the first adhesive portion 2 needs to be activated to become adhesive before use (before sealing the material).

[0105] Optional, see Figures 5 to 9The tape also includes a magnetic element 6, which is disposed in the second base 11 so that the second base 11 can be bent away from the first adhesive portion 2 under the action of magnetic force.

[0106] In this embodiment, the second base 11 can move under external force constraints. The external force can be an adsorption force or a clamping force. When it is an adsorption force, the second base 11 can be adsorbed by a device with a vacuum adsorption head, causing the second base 11 to move; or, the second base 11 can be moved by a device with a magnetic structure that magnetically adsorbs the magnetic element 6 in the second base 11. When it is a clamping force, the second base 11 can be clamped by a clamping device, causing the second base 11 to move.

[0107] Optionally, referring to Figures 1(b), 1(c), 2(b), 3(c), and 4(b), the tape may further include a third adhesive layer 7 disposed on the side of the substrate 1 away from the first adhesive portion 2, and a second release layer 8 disposed on the side of the third adhesive layer 7 away from the substrate 1.

[0108] In this embodiment, adding a third adhesive layer 7 to the tape expands its applicability, for example, enabling the splicing of multiple composite rolls. Furthermore, by providing a second insulating layer 8, it prevents external force applied to the second base 11 from adhering to the third adhesive layer 7, thus preventing the third adhesive layer 7 from losing its adhesiveness.

[0109] Corresponding to the aforementioned application function implementation device embodiments, this application also provides a method for using adhesive tape and corresponding embodiments.

[0110] Referring to Figures 10(a) to 11(d), embodiments of this application also provide a method for using composite tape, including:

[0111] S1. Attach the first adhesive part 2 to the overlapping area D of the first object 5.

[0112] In this embodiment, the first object 5 can be a wound material, such as a diaphragm roll or an electrode roll. An overlap area D is formed between the end of the wound material and the adjacent layers. Exemplarily, the end of the first adhesive portion 2 away from the second base 11 is adhered to the outermost layer 50 of the first object 5, and the end of the first adhesive portion 2 near the second base 11 is adhered to the overlap layer 51 where the first object 5 and the outermost layer overlap, thereby sealing the first object 5.

[0113] S2. Apply an external force to the second base 11 to bend the second base 11 away from the first adhesive portion 2, so as to drive the end of the first adhesive portion 2 close to the second base 11 to detach from the overlapping area D.

[0114] In this embodiment, applying an external force to the second base 11 includes applying an adsorption force and / or a clamping force to the second base 11. The adsorption force includes at least one of negative pressure, magnetic attraction, and electrostatic force.

[0115] S3. Release the adhesiveness of the second adhesive part 3 and stick the adhesive part 3 that generates adhesiveness onto the second object.

[0116] In this embodiment, the second adhesive portion 3 has various forms, such as the following:

[0117] At least a portion of the first region A of the first and second adhesive portions 3 is made of an activating material that can generate adhesiveness upon activation. The adhesiveness can be released in the first manner: by activating the activating material in the first region A of the second adhesive portion 3, the first region A of the second adhesive portion 3 becomes adhesive.

[0118] The second type involves a third adhesive portion 4 detachably connected to at least a portion of the third region C of the second adhesive portion 3 near the first adhesive portion 2. Adhesion can be released in a second manner: external force can be used to separate the third region C of the second adhesive portion 3 from the third adhesive portion 4, thereby releasing the adhesion of the third region C of the second adhesive portion 3.

[0119] The third method is a combination of the first and second methods. The viscosity of the second viscous part 3 can be released by using the combination of the first and second methods.

[0120] Fourthly, at least a second region B of the second adhesive portion 3 includes a second adhesive layer 30 disposed on at least one side of the substrate 1, and a first isolation layer 31 disposed on the side of the second adhesive layer 30 away from the substrate 1; the first isolation layer 31 can be separated from the second adhesive layer 30 under the action of external force to release the second adhesive layer 30. A third adhesive portion 4 is detachably connected to at least a third region C of the second adhesive portion 3 near the first adhesive portion 2. The adhesiveness can be released in a third manner: the third region C of the second adhesive portion 3 can be separated from the third adhesive portion 4 by external force to release the adhesiveness of the third region C of the second adhesive portion 3, and the first isolation layer 31 can be separated from the second adhesive layer 30 by external force to release the second adhesive layer 30.

[0121] The embodiments of this application can release the stickiness of the second sticky portion 3 in a corresponding manner depending on the different forms of the second sticky portion 3.

[0122] The composite tape of this application embodiment has three usage states: first, a sealing state, in which the first adhesive portion 2 is adhered to the overlapping area of ​​the material to close the material end; second, a material unsealing state, in which external force is applied to the second adhesive portion 3, causing a portion of the first adhesive portion 2 near the second base 11 to detach from the material, while the portion away from the second base 11 remains adhered to the material, thus unsealing the material end; and third, a splicing state, in which the adhesiveness of the second adhesive portion 3 is first released to make it sticky, and then the second adhesive portion 3 is adhered to the new material to achieve material splicing. Therefore, the composite tape of this application embodiment has secondary adhesion, and multiple operations such as sealing, unsealing, and splicing can be achieved using the same composite tape, improving material change efficiency and reducing production costs.

[0123] As an optional embodiment, at least a portion of the first region A of the second adhesive portion 3 is made of an activating material, which can generate adhesiveness under activation. Releasing the adhesiveness of the second adhesive portion 3 includes:

[0124] The activation material of the second viscous part 3 is activated by at least one of thermal excitation, photoexcitation, electrical excitation, and pressure excitation, so that the activation material becomes viscous.

[0125] In this application embodiment, the activation material includes at least one of thermal adhesive, photosensitive adhesive, electrosensitive adhesive, and pressure-sensitive adhesive. The activation method corresponds to at least one of thermal excitation, photoexcitation, electroexcitation, and pressure excitation. Specifically, for example, when the activation material is a thermal adhesive, thermal excitation can be used to stimulate the thermal adhesive, making it viscous. In this application embodiment, the thermal adhesive, photosensitive adhesive, electrosensitive adhesive, and pressure-sensitive adhesive materials can all be materials known to those skilled in the art, and this application does not further limit the specific type of material.

[0126] As can be seen from the above, the second adhesive portion 3 in the embodiments of this application has multiple forms.

[0127] When it is the first type, the method of using composite tape includes:

[0128] S11. Referring to Figure 10(a), the end of the first adhesive part 2 away from the second base 11 is attached to the outermost layer 50 of the first object 5, and the end of the first adhesive part 2 close to the second base 11 is attached to the overlapping layer 51 where the first object 5 and the outermost layer overlap, thereby sealing the first object 5.

[0129] S21. Referring to Figures 10(b) and 10(c), an external force is applied to the second base 11 to bend the second base 11 away from the first adhesive portion 2, so as to drive the end of the first adhesive portion 2 close to the second base 11 to detach from the overlapping area.

[0130] S31. Referring to Figure 10(d), the activation material of the first region A of the second viscous part 3 is activated on the activation platform by at least one of thermal excitation, optical excitation, electrical excitation, and pressure excitation, so that the activation material becomes viscous; and the first region A of the second viscous part 3 that has become viscous is pasted onto the second object.

[0131] When it is the second type, the method of using composite tape includes:

[0132] S12. Referring to Figure 11(a), the end of the first adhesive part 2 away from the second base 11 is attached to the outermost layer 50 of the first object 5, and the end of the first adhesive part 2 close to the second base 11 and the third adhesive part 4 are attached to the overlapping layer 51 where the first object 5 and the outermost layer overlap, thereby sealing the first object 5.

[0133] S22. Referring to Figures 11(b) and 11(c), an external force is applied to the second base 11 to bend the second base 11 away from the first adhesive portion 2, so as to cause the end of the first adhesive portion 2 near the second base 11 to detach from the overlapping area D, and at the same time, it also causes the third region C of the second adhesive portion 3 to separate from the third adhesive portion 4, so as to release the adhesiveness of the third region C of the second adhesive portion 3.

[0134] S32. Referring to Figure 11(d), the third region C of the second adhesive part 3 is pasted onto the second object.

[0135] When it is the third type, the application methods of composite tape include:

[0136] S13. The end of the first adhesive part 2 away from the second base 11 is attached to the outermost layer 50 of the first object 5, and the end of the first adhesive part 2 close to the second base 11 and the third adhesive part 4 are attached to the overlapping layer 51 where the first object 5 and the outermost layer overlap, thereby sealing the first object 5.

[0137] S23. Apply an external force to the second base 11 to bend the second base 11 away from the first adhesive portion 2, so as to drive the end of the first adhesive portion 2 near the second base 11 to detach from the overlapping area D, and at the same time drive the third region C of the second adhesive portion 3 to separate from the third adhesive portion 4, so as to release the adhesiveness of the third region C of the second adhesive portion 3.

[0138] S33. The activation material of the first region A of the second adhesive part 3 is activated by at least one of thermal excitation, optical excitation, electrical excitation, and pressure excitation, so that the activation material becomes adhesive; and the first region A and the third region C of the second adhesive part 3 are pasted onto the second object.

[0139] When it is the fourth type, the application methods of composite tape include:

[0140] S14. The end of the first adhesive part 2 away from the second base 11 is attached to the outermost layer 50 of the first object 5, and the end of the first adhesive part 2 close to the second base 11 and the third adhesive part 4 are attached to the overlapping layer 51 where the first object 5 and the outermost layer overlap, thereby sealing the first object 5.

[0141] S24. Apply an external force to the second base 11 to bend the second base 11 away from the first adhesive portion 2, so as to drive the end of the first adhesive portion 2 near the second base 11 to detach from the overlapping area D, and at the same time drive the third region C of the second adhesive portion 3 to separate from the third adhesive portion 4, so as to release the adhesiveness of the third region C of the second adhesive portion 3.

[0142] S34. Apply external force to separate the first isolation layer 31 from the second adhesive layer 30, and attach the third region C of the second adhesive portion 3 and the second adhesive layer 30 to the second object.

[0143] Optionally, referring to Figures 10(b) and 10(c), and Figures 11(b) and 11(c), an external force is applied to the second base 11, including applying an adsorption force or a clamping force to the second base 11.

[0144] In this embodiment, the second base 11 can move under external force constraints. The external force can be an adsorption force or a clamping force. When it is an adsorption force, the second base 11 can be adsorbed by a device with a vacuum adsorption head, causing the second base 11 to move; or, the second base 11 can be moved by a device with a magnetic structure that magnetically adsorbs the magnetic element 6 in the second base 11. When it is a clamping force, the second base 11 can be clamped by a clamping device, causing the second base 11 to move.

[0145] The solution of this application has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of each embodiment have different focuses; for parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. Those skilled in the art should also understand that the actions and modules involved in the specification are not necessarily essential to this application. Furthermore, it is understood that the steps in the method of this application embodiment can be adjusted, combined, and deleted according to actual needs, and the modules in the device of this application embodiment can be combined, divided, and deleted according to actual needs.

[0146] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A composite tape, characterized by, include: The substrate (1) includes a first base (10) and a second base (11) that are interconnected along its extension direction. The first adhesive portion (2) is disposed on at least one side of the first base (10); the first adhesive portion (2) can be adhered to the overlapping area of ​​the material for sealing the material; The second adhesive part (3) is located on at least one side of the substrate (1). One end of the second adhesive part (3) located on the same side as the first adhesive part (2) is connected to the first adhesive part (2), and the other end extends to a preset position on the second base (11). The adhesiveness of the second adhesive part (3) needs to be released to generate it. The second adhesive part (3) is used to stick to the new material to realize material docking.

2. The composite tape according to claim 1, characterized in that, At least a portion of the first region (A) of the second viscous portion (3) is made of an activating material that can generate viscosity under activation.

3. The composite tape according to claim 2, characterized in that, The activating material includes at least one of thermal adhesive, photosensitive adhesive, electrosensitive adhesive, and pressure-sensitive adhesive.

4. The composite tape according to any one of claims 1 to 3, characterized in that, The second adhesive portion (3) is detachably connected to at least a portion of the third region (C) near the first adhesive portion (2) by a third adhesive portion (4).

5. The composite tape according to claim 4, characterized in that, The third adhesive portion (4) includes a first bottom layer (40) disposed on the second adhesive portion (3) and a first adhesive layer (41) disposed on the side of the first bottom layer (40) away from the second adhesive portion.

6. The composite tape according to claim 4, characterized in that, The second adhesive portion (3) at least part of the second region (B) away from the first adhesive portion (2) includes a second adhesive layer (30) disposed on at least one side of the substrate (1) and a first isolation layer (31) disposed on the side of the second adhesive layer (30) away from the substrate (1); the first isolation layer (31) can be separated from the second adhesive layer (30) under the action of external force to release the second adhesive layer (30).

7. The composite tape according to claim 1, characterized in that, The first adhesive portion (2) includes a first adhesive segment (20) and a second adhesive segment (21) connected to each other along its extension direction, and the second adhesive portion (3) located on the same side of the first adhesive portion (2) is connected to the second adhesive segment (21).

8. The composite tape according to claim 7, characterized in that, The first viscous segment (20) and the second viscous segment (21) have the same or different viscosity; and / or, the extension length of the first viscous segment (20) is not less than the extension length of the second viscous segment (21).

9. The composite tape according to claim 1, characterized in that, The first adhesive portion (2) includes an adhesive material coated on at least one side of the first base (10), the adhesive material being made of a material that generates adhesiveness under activation, or being made of a material that is self-adhesive.

10. The composite tape according to claim 1, characterized in that, The tape also includes a magnetic element (6) disposed in the second base (11) so that the second base (11) can be bent away from the first adhesive portion (2) under the action of magnetic force.

11. The composite tape according to claim 1, characterized in that, The tape further includes a third adhesive layer (7) disposed on the side of the substrate (1) away from the first adhesive portion (2), and a second release layer (8) disposed on the side of the third adhesive layer (7) away from the substrate (1).

12. A method of using the composite tape according to any one of claims 1 to 11, characterized in that, include: The first adhesive part (2) is pasted onto the overlapping area (D) of the first object (5); An external force is applied to the second base (11) to bend the second base (11) away from the first adhesive portion (2) so as to cause the end of the first adhesive portion (2) near the second base (11) to detach from the overlapping area (D). Release the adhesiveness of the second adhesive part (3) and stick the second adhesive part (3) that produces adhesiveness onto the second object.

13. The method of use according to claim 12, characterized in that, The step of attaching the first adhesive portion (2) to the overlapping area (D) of the first object includes: The first adhesive portion (2) is attached to the outermost layer (50) of the first object (5) at one end away from the second base (11), and the first adhesive portion (2) is attached to the overlapping layer (51) of the first object (5) and the outermost layer at one end near the second base (11).

14. The method of use according to claim 12, characterized in that, The application of external force to the second base (11) includes applying an adsorption force and / or a clamping force to the second base (11).

15. The method of use according to claim 14, characterized in that, The adsorption force includes at least one of negative pressure, magnetic attraction, and electrostatic force.

16. The method of use according to claim 12, characterized in that, At least a portion of the first region (A) of the second viscous portion (3) is made of an activating material that can generate viscosity under activation, and the release of the viscosity of the second viscous portion (3) includes: The activation material of the second viscous portion (3) is activated by at least one of thermal excitation, photoexcitation, electrical excitation, and pressure excitation, so that the activation material becomes viscous.

17. The method of use according to any one of claims 12 to 16, characterized in that, The second adhesive portion (3) is detachably connected to at least a portion of the third region (C) near the first adhesive portion (2) by a third adhesive portion (4); the release of the adhesiveness of the second adhesive portion (3) includes: When an external force is applied, the second base (11) bends away from the first adhesive portion (2) while also causing the third region (C) of the second adhesive portion (3) to separate from the third adhesive portion (4).

18. The method of use according to claim 17, characterized in that, The second adhesive portion (3) at least a portion of the second region (B) away from the first adhesive portion (2) includes a second adhesive layer (30) disposed on at least one side of the substrate (1), and a first isolation layer (31) disposed on the side of the second adhesive layer (30) away from the substrate (1); the release of the adhesiveness of the second adhesive portion (3) includes: An external force is applied to separate the first isolation layer (31) from the second adhesive layer (30).

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