An antistatic shielding adhesive tape

Abstract

The utility model provides an anti -static shielding adhesive tape relates to adhesive tape technical field, including annular roll core, the outside of roll core is equipped with base layer, the bottom of base layer is equipped with antistatic layer, the bottom of antistatic layer is equipped with adhesive layer, the bottom of adhesive layer is equipped with isolation layer, the inner wall both sides of roll core are equipped with two installation slot, the inside fixed first reinforcing ring of one side installation slot, adopt when adhesive tape is extruded, through first reinforcing ring, second reinforcing ring and reinforcing rod strengthen roll core, through above -mentioned reinforcing structure, when the radial extrusion or end impact of adhesive tape roll in use, handling or transportation process, extrusion force can pass to first reinforcing ring and second reinforcing ring in proper order through roll core outer wall, and forms integral force support between two end reinforcing rings through reinforcing rod, thereby significantly improve the overall rigidity and deformation resistance of roll core in axial and radial direction, avoid roll core inner wall collapse, deformation or cracking, guarantee the stability and integrity of adhesive tape winding structure.

Description

Technical Field

[0001] This utility model relates to the field of adhesive tape technology, and in particular to an antistatic shielding adhesive tape. Background Technology

[0002] Antistatic shielding tape is widely used in electronic component packaging, circuit fixing, shielding protection, and precision equipment assembly. During use and transportation, it not only needs to possess excellent shielding and antistatic properties but also ensure structural stability during winding, storage, and handling. Existing antistatic shielding tapes are typically stored and used in roll form, with their overall structure mainly consisting of the tape body and the core that carries the tape.

[0003] In existing technologies, the research and development of antistatic shielding tapes has largely focused on the layer structure design of the tape body. This involves incorporating antistatic layers, shielding layers, and adhesive layers to improve electrostatic discharge and electromagnetic shielding effects. However, less attention has been paid to the core structure that carries the tape. Most existing cores employ a thin-walled hollow structure with limited inner wall strength, resulting in insufficient resistance to pressure and impact. During actual use, transportation, or stacking, the tape roll is often subjected to radial compression, end collisions, or stacking pressure. When external forces are transmitted through the tape layers to the core, the inner wall of the core can easily collapse, deform, or even crack, leading to problems such as loose tape winding, edge lifting, or tape wrinkling. In severe cases, this can affect the performance and appearance quality of the antistatic shielding tape. Furthermore, deformation of the core structure disrupts the overall coaxiality of the tape winding, causing the tape to jump or deviate during unwinding. This not only affects efficiency but may also lead to electrostatic accumulation or shielding failure in electronic component applications, reducing the reliability and safety of the antistatic shielding tape. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing antistatic shielding tapes, which mostly use thin-walled hollow cores for support. These cores are prone to deformation due to pressure or impact during winding, transportation, or use, thus affecting the tape's winding stability, antistatic shielding performance, and reliability. Therefore, this invention proposes an antistatic shielding tape.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an antistatic shielding tape comprising a ring-shaped core, a base layer rolled on the outer side of the core, an antistatic layer at the bottom of the base layer, an adhesive layer at the bottom of the antistatic layer, and an isolation layer at the bottom of the adhesive layer. Two mounting grooves are formed on both sides of the inner wall of the core. A first reinforcing ring is fixedly installed inside one mounting groove, and a second reinforcing ring is fixedly installed inside the other mounting groove. Six through holes are evenly distributed in the middle of the two mounting grooves. Reinforcing rods are installed inside each of the six through holes, and each reinforcing rod has a locking block at its end. Multiple limiting blocks are fixedly connected in a circumferential array on the normal surfaces of the first and second reinforcing rings. Six guide holes are provided on the other side of the first reinforcing ring.

[0006] Preferably, the antistatic layer is disposed on the bottom surface of the base layer and is heat-pressed and bonded to the base layer; the adhesive layer is disposed on the bottom surface of the antistatic layer and is bonded to the antistatic layer; the isolation layer is disposed on the bottom surface of the adhesive layer and is bonded to the adhesive layer; and the tape composed of the base layer, the antistatic layer, the adhesive layer and the isolation layer is wound and connected to the core.

[0007] Preferably, the two mounting slots are provided with a circumferential array of six through holes, and all the through holes are located inside the inner wall of the core. Both ends of the two through holes are connected to the two mounting slots.

[0008] Preferably, the first reinforcing ring and the second reinforcing ring are both installed in two mounting slots, and the six guide holes are set on the surface of the first reinforcing ring facing the core, and the positions of the guide holes correspond one-to-one with the positions of the through holes.

[0009] Preferably, one end of the reinforcing rod inside the six guide holes is disposed on the surface of the second reinforcing ring, and the reinforcing rod and the second reinforcing ring are integrally injection molded, and the other end of the six reinforcing rods passes through the guide hole of the first reinforcing ring.

[0010] Preferably, the locking blocks are all located at the end of the reinforcing rod away from the second reinforcing ring, and the reinforcing rod is engaged with the first reinforcing ring through the locking blocks.

[0011] Preferably, the six limiting blocks on the surface of the first reinforcing ring are disposed on the surface away from the guide hole, and the six limiting blocks on the surface of the second reinforcing ring are disposed on the surface away from the reinforcing rod. The six limiting blocks on the surfaces of the first and second reinforcing rings are arranged in a circumferential array, and the limiting blocks are integrally injection molded with the first and second reinforcing rings.

[0012] Beneficial effects In this invention, a first reinforcing ring and a second reinforcing ring are respectively inserted into two mounting slots at both ends of the inner wall of the roll core. A reinforcing rod on the side of the second reinforcing ring passes through a through hole in the inner wall of the roll core, extending from one mounting slot to the other. It is guided through a guide hole on the surface of the first reinforcing ring and then engages with the first reinforcing ring via a locking block at the end of the reinforcing rod. This design ensures that during use or transportation, when the adhesive tape is compressed, the roll core is reinforced by the first reinforcing ring, the second reinforcing ring, and the reinforcing rod. Through this reinforcement structure, the adhesive tape roll is strengthened during use, handling, or transportation. When subjected to radial compression or end impact, the extrusion force can be transmitted sequentially through the outer wall of the core to the first and second reinforcing rings, and then through the reinforcing rod to form an overall force support between the two reinforcing rings. This significantly improves the overall rigidity and deformation resistance of the core in the axial and radial directions, preventing the inner wall of the core from collapsing, deforming, or cracking, and ensuring the stability and integrity of the tape winding structure. This solves the problem that existing antistatic shielding tapes often use thin-walled hollow cores for support, which are prone to deformation due to pressure or impact during winding, transportation, or use, thus affecting the tape winding stability, antistatic shielding performance, and reliability. Attached Figure Description

[0013] Figure 1 This is an isometric drawing of the present invention; Figure 2 This is a perspective view of the present utility model; Figure 3 This is a partial isometric drawing of the present invention; Figure 4 This is a partial first perspective view of the present utility model; Figure 5 This is a partial second perspective view of the present invention.

[0014] Legend: 1. Core; 2. Base layer; 3. Antistatic layer; 4. Adhesive layer; 5. Isolation layer; 6. Mounting groove; 7. Through hole; 8. First reinforcing ring; 9. Second reinforcing ring; 10. Guide hole; 11. Reinforcing rod; 12. Locking block; 13. Limiting block. Detailed Implementation

[0015] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.

[0016] The specific embodiments of this utility model are described below with reference to the accompanying drawings. Specific Implementation Example 1: Reference Figure 1-5 An antistatic shielding tape includes a ring-shaped core 1. A base layer 2 is wound around the outer side of the core 1. An antistatic layer 3 is provided at the bottom of the base layer 2. An adhesive layer 4 is provided at the bottom of the antistatic layer 3. An isolation layer 5 is provided at the bottom of the adhesive layer 4. Two mounting grooves 6 are opened on both sides of the inner wall of the core 1, one mounting groove 6 on each side. A first reinforcing ring 8 is fixedly installed inside one mounting groove 6, and a second reinforcing ring 9 is fixedly installed inside the mounting groove 6 on the other side. Six through holes 7 are evenly provided between the two mounting grooves 6. One through hole 7 on each of the two mounting grooves 6 forms a group. The six groups of through holes 7 are all reinforced with... A reinforcing rod 11 is provided, and each end of the reinforcing rod 11 is provided with a locking block 12. Multiple limiting blocks 13 are fixedly connected in a circumferential array on the normal surfaces of the first reinforcing ring 8 and the second reinforcing ring 9. Six guide holes 10 are provided on the other side of the first reinforcing ring 8. The antistatic layer 3 is provided on the bottom surface of the base layer 2, and the antistatic layer 3 is heat-pressed and bonded to the base layer 2. The adhesive layer 4 is provided on the bottom surface of the antistatic layer 3, and the adhesive layer 4 is bonded to the antistatic layer 3. The isolation layer 5 is provided on the bottom surface of the adhesive layer 4, and the isolation layer 5 is bonded to the adhesive layer 4. The tape composed of the base layer 2, the antistatic layer 3, the adhesive layer 4, and the isolation layer 5 is wrapped with the core 1. The two mounting slots 6 are arranged in a circular array with six through holes 7, all of which are located inside the inner wall of the core 1. Both ends of the two through holes 7 communicate with the two mounting slots 6. The first reinforcing ring 8 and the second reinforcing ring 9 are both installed in the two mounting slots 6. Six guide holes 10 are located on the surface of the first reinforcing ring 8 facing the core 1, and the positions of the guide holes 10 correspond one-to-one with the positions of the through holes 7. One end of the reinforcing rod 11 inside the six guide holes 10 is located on the surface of the second reinforcing ring 9, and the reinforcing rod 11 is integrally injection molded with the second reinforcing ring 9. The other end of each rod passes through the guide hole 10 of the first reinforcing ring 8. The locking block 12 is set at the end of the reinforcing rod 11 away from the second reinforcing ring 9, and the reinforcing rod 11 is locked to the first reinforcing ring 8 through the locking block 12. The six limiting blocks 13 on the surface of the first reinforcing ring 8 are set on the surface away from the guide hole 10, and the six limiting blocks 13 on the surface of the second reinforcing ring 9 are set on the surface away from the reinforcing rod 11. The six limiting blocks 13 on the surfaces of the first reinforcing ring 8 and the second reinforcing ring 9 are arranged in a circumferential array, and the limiting blocks 13 are integrally injection molded with the first reinforcing ring 8 and the second reinforcing ring 9.

[0018] The core 1 serves as the load-bearing structure of the entire tape. Its outer periphery is used to wind the tape body, which consists of the base layer 2, antistatic layer 3, adhesive layer 4, and release layer 5, while its inner wall provides installation space for the reinforcing structure. The base layer 2, as the mechanical support layer of the tape, is made of polyester film or polypropylene film. This type of material has good dimensional stability, tensile strength, and heat resistance, and is not easily deformed during tape application, peeling, and long-term service, providing a stable and flat load-bearing interface for the antistatic layer 3. At the same time, after corona or plasma treatment, the surface of the base layer 2 can improve the bonding strength with the antistatic layer 3, preventing interlayer delamination during use. Its bottom surface is connected to the antistatic layer 3 through hot-pressing, forming a stable interlayer bonding structure, thereby ensuring that the antistatic layer 3 does not peel off during winding and unwinding. The antistatic layer 3 is located between the base layer 2 and the adhesive layer 4. It is made of a conductive material with a continuous conductive network structure. Specifically, it can be a metal foil layer mainly composed of copper, aluminum, or nickel, or a conductive coating formed by uniformly dispersing conductive carbon materials or metal powder in a resin matrix. This antistatic layer 3 forms a low surface resistance path in the in-plane direction, allowing the tape to quickly diffuse the accumulated static charge within the layer and release it through the grounding path when it comes into contact with a charged body or is subjected to an external electromagnetic field, thereby avoiding the accumulation of local charges. At the same time, the antistatic layer 3 itself, as a continuous or semi-continuous conductive medium, can generate specular reflection and induced current effects when electromagnetic waves are incident, effectively reflecting the electric field component in the electromagnetic waves. It also dissipates some electromagnetic energy by converting it into heat energy through conductive loss and eddy current loss, thereby achieving electromagnetic shielding. Its lower surface is firmly bonded to the adhesive layer 4, ensuring that the electrostatic protection structure and the adhesive structure maintain overall consistency. The adhesive layer 4 is located on the functional adhesion side of the tape and is used to adhere the tape to the surface of the object being fixed or shielded during use. The release layer 5, located at its bottom, covers the adhesive layer 4 when not in use. The release layer 5 is preferably made of silicone release paper, coated release film, or a low surface energy polyolefin film. After release treatment, its surface forms a controllable peel force with the adhesive layer, protecting the antistatic layer 3 and the adhesive layer when the tape is not in use, preventing contamination, oxidation, or mechanical damage to the antistatic layer 3. During actual use, the release layer 5 is peeled off, and the antistatic layer 3 adheres tightly to the surface of the shielded object via the adhesive layer 4, forming a continuous conductive or quasi-conductive interface between the antistatic layer 3 and the shielded object. This further reduces the interface contact resistance and enhances electromagnetic wave reflection and charge transfer efficiency.

[0019] Two mounting slots 6 are respectively opened at both ends of the inner wall of the core 1 for installing the first reinforcing ring 8 and the second reinforcing ring 9, so that the two reinforcing rings abut against the inner wall ends of the core 1 in the axial direction, thereby forming stable end supports at both ends of the core 1. Six through holes 7 located between the two mounting slots 6 are arranged in a circumferential array along the inner wall of the core 1. Each through hole 7 is connected to the two mounting slots 6 at both ends, providing a through channel for the reinforcing rod 11. The first reinforcing ring 8 is installed in one of the mounting slots 6. Six guide holes 10 are opened on the side surface facing the inside of the core 1. The positions of the guide holes 10 correspond one-to-one with the through holes 7, which are used to axially guide the reinforcing rod 11 during assembly and under stress, making it easier for the reinforcing rod 11 to pass through the first reinforcing rod 11 through the guide holes 10. The second reinforcing ring 9 is installed in the mounting groove 6 on the other side. Six reinforcing rods 11 are integrally injection molded onto its surface. Each reinforcing rod 11 passes sequentially through the corresponding through hole 7 along the inner wall of the core 1 and enters the guide hole 10 of the first reinforcing ring 8. Under the constraint of the guide hole 10, it is prevented from tilting or wobbling. A locking block 12 is provided at the end of the reinforcing rod 11 away from the second reinforcing ring 9. When the reinforcing rod 11 completely penetrates the first reinforcing ring 8, the locking block 12 engages with the first reinforcing ring 8, thus reliably limiting the reinforcing rod 11 axially and preventing axial loosening during use or transportation. During the axial insertion of the reinforcing rod 11 into the first reinforcing ring 8, the locking block 12 contacts and is compressed against the wall of the guide hole 10 under external force, causing elastic deformation of the locking block 12 body, thereby temporarily reducing its outer diameter and allowing it to pass smoothly through the guide hole 10. After the locking block 12 completely passes through the guide hole 10, the locking block 12 returns to its original shape under the elasticity of the plastic material, so that the locking block 12 and the first reinforcing ring 8 form a locking engagement, thereby reliably limiting the reinforcing rod 11 in the axial direction and preventing the reinforcing rod 11 from axially dislodging during use or transportation. The first reinforcing ring 8 and the second reinforcing ring 9 are both circumferentially arrayed with six limiting blocks 13. The limiting blocks 13 are integrally injection molded with the corresponding reinforcing rings. The limiting blocks 13 on the first reinforcing ring 8 are located on the side surface away from the guide hole 10, and the limiting blocks 13 on the second reinforcing ring 9 are located on the side surface away from the reinforcing rod 11. After assembly, they are respectively attached to the two sides of the core 1. Through the limiting of the limiting blocks 13, even if all the through holes 7 inside the core 1 break and fail, the first reinforcing ring 8 and the second reinforcing ring 9 can still be fixed inside the core 1 by the limiting blocks 13, ensuring the installation stability of the reinforcing rings inside the core 1.

[0020] During the use, handling, or transportation of the tape roll, when external extrusion or end impact is applied to the core 1, the force is first transmitted inward through the outer wall of the core 1, and then dispersed from the inner wall of the core 1 to the first reinforcing ring 8 and the second reinforcing ring 9. Subsequently, the reinforcing rod 11 connecting the two reinforcing rings forms an overall force channel in the axial direction, so that the two reinforcing rings at both ends work together to bear the force, thereby effectively improving the overall rigidity and deformation resistance of the core 1 in the axial and radial directions, preventing the inner wall of the core 1 from collapsing, deforming, or cracking, ensuring the stability and integrity of the tape winding structure, and thus ensuring the reliability and safety of the antistatic shielding tape in actual use. Specific Implementation Example 2: Reference Figure 1-5 A type of antistatic shielding tape, further based on the basic structure in Specific Embodiment 1, can have micro-convex and concave friction textures circumferentially formed on the inner walls of the first reinforcing ring 8 and the second reinforcing ring 9. The friction textures play a role in tension adjustment and preventing reverse winding during the unwinding or winding process of the tape. When the tape is wound around the outer circumference of the core 1 and installed on the unwinding or winding shaft, the inner walls of the reinforcing rings at both ends of the core 1 contact the shaft surface. The friction textures form a controllable friction force with the shaft surface through the micro-protrusions. This friction force can limit the sliding speed of the core 1 relative to the shaft, and prevent the tape from rotating too fast or sliding in the opposite direction due to inertia or external force during the unwinding or winding process, thereby effectively preventing the tape layers from becoming loose, misaligned between layers, or locally curled. The micro-convex and concave structure of the friction texture ensures uniform distribution of the friction contact surface, providing stable frictional resistance throughout the unwinding or rewinding process. It also reduces the impact of external impacts or operational vibrations on the axial rotation of the core 1, ensuring that the tape maintains uniform tension and coaxial winding state during unwinding or rewinding. This enhances the unwinding smoothness and anti-winding performance of the tape, and avoids localized stress concentration or damage to the antistatic layer 3 and the tape body.

[0022] In summary: 1. A method is adopted in which the first reinforcing ring 8 and the second reinforcing ring 9 are respectively inserted into two mounting grooves 6 opened at both ends of the inner wall of the roll core 1. The reinforcing rod 11 on the side of the second reinforcing ring 9 passes through the through hole 7 set in the inner wall of the roll core 1 from one end of the mounting groove 6 to the other end of the mounting groove 6. It is guided through the guide hole 10 on the surface of the first reinforcing ring 8 and passes through the locking block 12 at the end of the first reinforcing ring 8 to engage with the first reinforcing ring 8. So that when the adhesive tape is squeezed during use or transportation, the roll core 1 is reinforced by the first reinforcing ring 8, the second reinforcing ring 9 and the reinforcing rod 11. With the above-mentioned reinforcement structure, the adhesive tape roll is reinforced during use and transportation. When subjected to radial compression or end impact during transportation, the extrusion force can be transmitted sequentially through the outer wall of the core 1 to the first reinforcing ring 8 and the second reinforcing ring 9, and form an overall force support between the two reinforcing rings via the reinforcing rod 11. This significantly improves the overall rigidity and deformation resistance of the core 1 in the axial and radial directions, prevents the inner wall of the core 1 from collapsing, deforming or cracking, and ensures the stability and integrity of the tape winding structure. This solves the problem that in the prior art, antistatic shielding tapes mostly use thin-walled hollow cores 1 for support, which are prone to deformation due to pressure or impact during winding, transportation or use, thus affecting the tape winding stability, antistatic shielding performance and reliability.

[0023] 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.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An antistatic shielding tape, comprising a ring-shaped core (1), characterized in that: The outer side of the core (1) is provided with a base layer (2), the bottom of the base layer (2) is provided with an antistatic layer (3), the bottom of the antistatic layer (3) is provided with an adhesive layer (4), the bottom of the adhesive layer (4) is provided with an isolation layer (5), two mounting grooves (6) are opened on both sides of the inner wall of the core (1), a first reinforcing ring (8) is fixedly provided inside the mounting groove (6) on one side, and a second reinforcing ring (9) is fixedly provided inside the mounting groove (6) on the other side, six through holes (7) are evenly provided in the middle of the two mounting grooves (6), and one through hole (7) on each of the two mounting grooves (6) is a group, and a reinforcing rod (11) is provided inside the six groups of through holes (7), and a locking block (12) is provided at the end of the reinforcing rod (11). Multiple limiting blocks (13) are fixedly connected in a circumferential array on the normal surface of the first reinforcing ring (8) and the second reinforcing ring (9), and six guide holes (10) are provided on the other side of the first reinforcing ring (8).

2. The antistatic shielding tape according to claim 1, characterized in that: The antistatic layer (3) is set on the bottom surface of the base layer (2), and the antistatic layer (3) and the base layer (2) are heat-pressed together. The adhesive layer (4) is set on the bottom surface of the antistatic layer (3), and the adhesive layer (4) is bonded to the antistatic layer (3). The isolation layer (5) is set on the bottom surface of the adhesive layer (4), and the isolation layer (5) is bonded to the adhesive layer (4). The tape composed of the base layer (2), the antistatic layer (3), the adhesive layer (4) and the isolation layer (5) is wound and connected to the core (1).

3. The antistatic shielding tape according to claim 1, characterized in that: The two mounting slots (6) are provided with six through holes (7) arranged in a circumferential array, and the through holes (7) are all located in the inner wall of the core (1). Both ends of the two through holes (7) are connected to the two mounting slots (6).

4. The antistatic shielding tape according to claim 1, characterized in that: The first reinforcing ring (8) and the second reinforcing ring (9) are both installed in two mounting slots (6). The six guide holes (10) are set on the surface of the first reinforcing ring (8) facing the core (1), and the positions of the guide holes (10) correspond one-to-one with the positions of the through holes (7).

5. The antistatic shielding tape according to claim 1, characterized in that: One end of the reinforcing rod (11) inside the six guide holes (10) is set on the surface of the second reinforcing ring (9), and the reinforcing rod (11) and the second reinforcing ring (9) are integrally injection molded. The other end of the six reinforcing rods (11) passes through the guide hole (10) of the first reinforcing ring (8).

6. The antistatic shielding tape according to claim 1, characterized in that: The locking blocks (12) are all located at the end of the reinforcing rod (11) away from the second reinforcing ring (9), and the reinforcing rod (11) is engaged with the first reinforcing ring (8) through the locking blocks (12).

7. The antistatic shielding tape according to claim 1, characterized in that: The six limiting blocks (13) on the surface of the first reinforcing ring (8) are set on the side away from the guide hole (10), and the six limiting blocks (13) on the surface of the second reinforcing ring (9) are set on the side away from the reinforcing rod (11). The six limiting blocks (13) on the surfaces of the first reinforcing ring (8) and the second reinforcing ring (9) are arranged in a circumferential array, and the limiting blocks (13) are integrally injection molded with the first reinforcing ring (8) and the second reinforcing ring (9).

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