Heat preservation adhesive tape
By designing multiple insulation layers and core material structures on the tape, the problem of the tape's lack of insulation performance is solved, achieving both adhesion and insulation effects, making it suitable for various scenarios.
Patent Information
- Application Number
- CN202422113829.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-28
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-08-28
AI Technical Summary
The tape does not have heat insulation properties, which makes it difficult to operate when insulating the equipment.
Design a thermal insulation tape comprising multiple layers of insulation and a core material. It utilizes vacuum to insulate heat conduction, the core material provides physical support, a barrier film prevents damage to the vacuum layer, and the insulation layer is located on one side of the tape, combining adhesive and thermal insulation effects.
It achieves the dual functions of heat preservation and adhesion, improves the heat preservation effect, enhances flexibility and stability, adapts to different shaped surfaces, and simplifies the installation process.
Smart Images
Figure CN223561505U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the technical field of thermal insulation materials, and particularly relates to a thermal insulation adhesive tape. BACKGROUND
[0002] A vacuum insulation plate is a new type of insulation plate developed rapidly in recent years, which utilizes internal high vacuum degree to reduce air heat convection, so that the internal heat transfer is reduced to the minimum, and the vacuum insulation plate has good thermal insulation effect.
[0003] Due to good flexibility and strong adhesion, the adhesive tape can be attached to surfaces of different shapes to play a fixing role. However, the adhesive tape generally does not have thermal insulation performance, and if thermal insulation is required for equipment, the adhesive tape needs to be used to bond the thermal insulation material on the surface of the equipment, which is troublesome. SUMMARY
[0004] The application aims to at least solve the technical problem that the adhesive tape does not have thermal insulation performance. To this end, the application provides a thermal insulation adhesive tape which has the effects of adhesion and thermal insulation.
[0005] The thermal insulation adhesive tape provided by the application comprises:
[0006] an adhesive tape body;
[0007] a thermal insulation layer comprising a plurality of core materials and a barrier film suitable for wrapping the core materials;
[0008] The thermal insulation layer is arranged on one side of the adhesive tape body.
[0009] According to the thermal insulation adhesive tape provided by the application, the thermal insulation layer is provided with at least two layers, and each thermal insulation layer is arranged in a stack.
[0010] According to the thermal insulation adhesive tape provided by the application, each thermal insulation layer is arranged on the same side of the adhesive tape body.
[0011] According to the thermal insulation adhesive tape provided by the application, the core materials of two adjacent thermal insulation layers are arranged in a staggered manner.
[0012] According to the thermal insulation adhesive tape provided by the application, the core materials of two adjacent thermal insulation layers are arranged in a staggered manner.
[0013] According to the thermal insulation adhesive tape provided by the application, the core materials of two adjacent thermal insulation layers are arranged in a staggered manner.
[0014] According to the thermal insulation adhesive tape provided by the application, the barrier film and the adhesive tape body and / or adjacent barrier films form a closed cavity of the core material.
[0015] According to the heat insulation adhesive tape, gaps are formed between two adjacent core materials of the same heat insulation layer; the core material is bent towards the tape body along the thickness direction of the heat insulation adhesive tape to form a bending part, and the bending part is located in the gap between the adjacent heat insulation layers.
[0016] According to the heat insulation adhesive tape, the tape body has a tape surface and a non-tape surface, and the heat insulation layer is arranged on the non-tape surface.
[0017] According to the heat insulation adhesive tape, the core material is a flexible core material.
[0018] And / or,
[0019] The core material is at least one of an organic fiber core material and a polyethylene core material.
[0020] According to the heat insulation adhesive tape, the difference between the size of the heat insulation layer in the width direction of the heat insulation adhesive tape and the size of the core material in the width direction of the heat insulation adhesive tape is three to ten millimeters.
[0021] The one or more technical solutions in the embodiments of the present application have at least one of the following technical effects:
[0022] The heat insulation layer plays a heat insulation role, the heat insulation layer is arranged on one side of the tape body, so that the tape has the effects of adhesion and heat insulation; the heat insulation layer uses vacuum to isolate heat conduction and convection, and further reduces heat transfer through the low-thermal-conductivity core material; the core material provides physical support, the barrier film is wrapped outside the core material, and the barrier film prevents the vacuum layer from being affected by moisture, oxidation or physical damage, and ensures long-term stability of the vacuum state.
[0023] Additional aspects and advantages of the application will be set forth in part in the following description, will become apparent from the following description, or will be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS
[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.
[0025] Figure 1 One of the structure schematic diagrams of the heat insulation adhesive tape is shown;
[0026] Figure 2 An enlarged view of A in FIG. 1 is shown; Figure 1
[0027] Figure 3 Fig. 2 shows a structural schematic diagram of the heat preservation adhesive tape.
[0028] Reference signs:
[0029] 100, adhesive tape body; 110, adhesive surface; 120, non-adhesive surface;
[0030] 200, heat preservation layer; 210, core material; 220, barrier film; 230, first heat preservation layer; 231, first core material; 232, first barrier film; 240, second heat preservation layer; 241, second core material; 242, second barrier film; 250, gap;
[0031] 300, closed cavity. DETAILED DESCRIPTION
[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.
[0033] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative positional relationship, movement condition and the like between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.
[0034] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation" and the like should be understood in a broad sense, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; can be internal connection of two elements or interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0035] In addition, the description such as "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that the technical solutions can be realized by those skilled in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection claimed by the present application.
[0036] The vacuum heat insulation plate is a new type of heat insulation plate developed rapidly in recent years, which utilizes internal high vacuum degree to reduce air heat convection, so that the internal heat transfer is reduced to the minimum, and the vacuum heat insulation plate has good heat preservation effect.
[0037] Due to the characteristics of good flexibility and strong adhesion, the adhesive tape can be attached to surfaces of different shapes to play a fixing role. However, the adhesive tape generally does not have heat preservation performance, and if heat preservation is required for the equipment, the adhesive tape needs to be used to adhere the heat preservation material to the surface of the equipment, which is troublesome to operate.
[0038] The application will be described below in conjunction with the accompanying drawings Figures 1-3 The application will be described below in conjunction with the accompanying drawings
[0039] The utility model discloses a heat preservation adhesive tape, please refer to Figure 1 And Figure 2 The heat preservation adhesive tape comprises an adhesive tape body 100 and a heat preservation layer 200; the heat preservation layer 200 comprises a plurality of core materials 210 and a barrier film 220, and the barrier film 220 is suitable for wrapping the core materials 210; and the heat preservation layer 200 is arranged on one side of the adhesive tape body 100.
[0040] The heat preservation layer 200 plays a heat preservation role, and the heat preservation layer 200 is arranged on one side of the adhesive tape body 100, so that the heat preservation adhesive tape has the effects of adhesion and heat preservation; the heat preservation layer 200 utilizes vacuum to isolate heat conduction and convection, and further reduces heat transfer through the low-thermal-conductivity core materials 210; the core materials 210 provide physical support, the barrier film 220 is wrapped outside the core materials 210, the barrier film 220 prevents the vacuum layer from being affected by moisture, oxidation or physical damage, and ensures that the vacuum state is stable for a long time.
[0041] The barrier film 220 wraps the core materials 210 to maintain the vacuum environment of the heat preservation layer 200, so that the heat preservation adhesive tape is not easy to break or deform during processing and use. The barrier film 220 can help maintain the structural stability of the core materials 210 and prevent damage due to pressure difference in the vacuum environment.
[0042] The core materials 210 are generally microporous materials or aerogels, the core materials 210 have very low thermal conductivity, can further reduce heat transfer, and enhance heat insulation performance; the core materials 210 can be arranged in one, two, three, four, five or six, and the number of the core materials 210 is not particularly limited in the utility model embodiment; a plurality of core materials 210 are arranged, on one hand, the plurality of core materials 210 can improve the heat preservation performance of the heat preservation layer 200, and on the other hand, the heat preservation layer 200 formed by the plurality of core materials 210 has better flexibility, so that the heat preservation layer 200 can be more attached to the adhesive tape body 100, and thus the heat preservation adhesive tape can be adapted to installation positions of different shapes.
[0043] The heat preservation adhesive tape can be suitable for a use scene needing heat preservation, such as pipeline heat preservation or condenser heat preservation. When in use, the adhesive tape body 100 can be directly adhered to the surface of equipment (for example, the surface of a pipeline or the surface of a condenser), so that the heat preservation adhesive tape can be installed without using extra tools, and the heat preservation effect can be achieved. Of course, the adhesion of the heat preservation adhesive tape can also be used to adhere multiple appliances together, and the multiple appliances can be simultaneously heat preserved. The heat preservation adhesive tape has the effects of adhesion and heat preservation, is suitable for various use scenes, and the use scene of the heat preservation adhesive tape is not specially limited in the embodiment of the heat preservation adhesive tape.
[0044] Please refer to Figure 1 and Figure 2 In some embodiments, the heat preservation layer 200 is provided with at least two layers, and each heat preservation layer 200 is arranged in a stacked manner, so that a better heat insulation effect can be achieved, and the heat preservation performance of the heat preservation adhesive tape can be improved. The heat bridge refers to a heat transfer path caused by structural design or material defects in a heat insulation material. The multiple heat preservation layers 200 can separate these potential heat bridges, and reduce the flow of heat through these weak links. The multiple heat preservation layers 200 can significantly reduce heat conduction, each layer can effectively reduce the transfer of heat through the material, and the air isolation or vacuum between the heat preservation layers 200 can further reduce the flow of heat, so that the overall heat insulation performance is improved. In order to provide a better heat preservation effect, the heat preservation layer 200 and the heat preservation layer 200 are in a vacuum environment. In addition, the structure of the multiple heat preservation layers 200 can provide better mechanical strength and stability, which helps to resist the physical impact of the external environment on the heat preservation layer 200, and enhances the durability of the heat preservation adhesive tape. The multiple heat preservation layers 200 can also serve as a backup, so that in the case that one of the heat preservation layers 200 is damaged, the other heat preservation layers 200 can continue to play a heat preservation role, and the loss is reduced. The material and thickness of the heat preservation layer 200 and the number of the heat preservation layers 200 can be adjusted according to different use scenes and use requirements, and the material and thickness of the heat preservation layer 200 and the number of the heat preservation layers 200 are not specially limited in the embodiment of the heat preservation adhesive tape.
[0045] Please refer to Figure 1 and Figure 2 In some embodiments, each heat preservation layer 200 is arranged on the same side of the adhesive tape body 100, so that the heat preservation layer 200 can reduce the interference with the adhesive tape body 100, and the heat preservation layer 200 can avoid affecting the normal work of the adhesive tape body 100 as much as possible. The heat preservation adhesive tape has the heat preservation performance on the premise that the adhesion of the heat preservation adhesive tape is ensured. In the processing process, the heat preservation layer 200 part and the adhesive tape body 100 part can be processed respectively, and then the heat preservation layer 200 part can be mounted on one side of the adhesive tape body 100, so that the processing process is reduced.
[0046] In the related art, since the vacuum insulation plate does not have flexibility, it is difficult to adapt to surfaces of different shapes. For a pipe body or an irregularly shaped device, the vacuum insulation plate cannot be attached to the device for heat preservation, resulting in poor heat preservation effect.
[0047] Referring to Figure 1 and Figure 2 In some embodiments, the core materials 210 of two adjacent heat preservation layers 200 are arranged in a staggered manner.
[0048] It can be understood that the core materials 210 of two adjacent heat preservation layers 200 are arranged in a staggered manner, which can effectively prevent heat transfer through the gaps between the core materials 210, block the heat transfer of the heat bridge, and reduce the heat transfer coefficient. By disrupting the straight path of heat transfer, it is more difficult for heat to find a continuous transmission channel, thereby improving the heat preservation effect of the heat preservation tape. In addition, the staggered arrangement can better adapt to dynamic loads, reduce stress concentration points, make the heat preservation tape more evenly distribute stress when deformed, improve the flexibility of the heat preservation tape, and enable the heat preservation tape to be attached to installation locations of different shapes, thereby improving the heat preservation effect.
[0049] Referring to Figure 1 and Figure 2 In some embodiments, the normal projections of two adjacent core materials 210 in the thickness direction (such as the a direction in Figure 1 ) of the heat preservation tape at least partially overlap, which can reduce the gaps between the core materials 210 and avoid heat transfer through the gaps between the core materials 210 as much as possible. The above arrangement makes the contact points of the core materials 210 of two adjacent heat preservation layers 200 and the seams of two adjacent core materials 210 of the same heat preservation layer 200 staggered, which can reduce material damage caused by stress concentration, enhance the flexibility of the heat preservation layer 200 under stress, and reduce the risk of flexibility decline due to material fatigue or aging. The two adjacent core materials 210 located in adjacent heat preservation layers 200 refer to two core materials 210 located in two adjacent heat preservation layers 200, respectively, and the positions of the two core materials 210 are adjacent.
[0050] Referring to Figure 1 and Figure 2In some embodiments, the core material 210 of two adjacent thermal insulation layers 200 is separated by a diaphragm, and the core material 210 of different thermal insulation layers 200 can be isolated by the barrier film 220 to avoid adhesion between the core materials 210. The isolation film can fix the position of each core material 210 to avoid the core material 210 from shifting during use. By separating the core material 210 of each thermal insulation layer 200 by the barrier film 220, each thermal insulation layer 200 is relatively independent, and if one of the barrier films 220 is damaged, it will not affect other thermal insulation layers 200. In order to improve the thermal insulation effect, a reflective layer can be provided on the barrier film 220 away from the tape body 100 to reflect external radiation and reduce heat transfer. The reflective layer can be aluminum foil or the like.
[0051] Referring to Figure 2 and Figure 3 Generally, the thermal insulation tape is in a strip shape, and correspondingly, a plurality of core materials 210 are arranged along the length direction (e.g., the b direction in Figure 1 ) of the thermal insulation tape for easy processing. One barrier film 220 can correspond to a plurality of core materials 210 in the same thermal insulation layer 200, or one barrier film 220 can correspond to one core material 210. Due to the high flexibility of the thermal insulation tape as a whole, the degree of bending is large during use. By arranging one barrier film 220 corresponding to one core material 210, the core materials 210 in the same thermal insulation layer 200 can be isolated, and the tension on the barrier film 220 when the thermal insulation tape is bent can be reduced, thereby reducing the risk of damage to the barrier film 220. By arranging one barrier film 220 corresponding to one core material 210, the thermal insulation tape can be easily cut according to the needs of use.
[0052] Referring to Figure 1 and Figure 2 In some embodiments, the barrier film 220 and the tape body 100 form a closed cavity 300 for the core material 210. The closed cavity 300 can provide a physical barrier for the core material 210 to prevent external moisture or impurities from entering, and the closed cavity can maintain a vacuum environment for the thermal insulation layer 200 to improve the thermal insulation effect. The closed cavity 300 is formed between the barrier film 220 and the tape body 100. The tape body 100 can provide adhesion for the thermal insulation tape to facilitate the thermal insulation tape to be attached to the equipment that needs to be insulated. On the other hand, the tape body 100 can be connected with the barrier film 220 to form the closed cavity 300 to maintain the vacuum degree of the thermal insulation layer 200. The above arrangement improves the utilization rate of the tape body 100, reduces the amount of the barrier film 220, and reduces the cost. The direct connection between the barrier film 220 and the tape body 100 can improve the tightness of the connection between the thermal insulation layer 200 and the tape body 100, and reduce the risk of separation of the thermal insulation layer 200 and the tape body 100. During processing, the core material 210 can be directly placed between the barrier film 220 and the tape body 100, and the barrier film 220 can be fixed on the tape body 100 by heat sealing and vacuum extraction.
[0053] Please see Figure 1 and Figure 2 In some embodiments, a closed cavity 300 of the core material 210 is formed between the barrier film 220 and adjacent barrier films 220. The closed cavity 300 can provide a physical barrier for the core material 210, preventing external moisture or impurities from entering. The closed cavity can also maintain the vacuum environment of the insulation layer 200, improving the heat insulation effect. The closed cavity 300, formed by the barrier film 220 and adjacent barrier films 220, can provide a strong connection between two adjacent insulation layers 200, reducing the risk of the insulation layers 200 detaching. It is understood that two adjacent insulation layers 200 are separated by the barrier film 220. The barrier film 220 located between the two adjacent insulation layers 200 is a common barrier film 220. Closed cavities 300 are formed on both sides of the common barrier film 220 to improve the utilization rate of the barrier film 220 and reduce production costs. For example, the insulation layer 200 has two layers: a first insulation layer 230 and a second insulation layer 240. The first insulation layer 230 includes a first core material 231 and a first barrier film 232, and the second insulation layer 240 includes a second core material 241 and a second barrier film 242. The first insulation layer 230 is disposed on the side of the second insulation layer 240 close to the tape body 100, and the first barrier film 232 is located between the first core material 231 and the second core material 241. A closed cavity 300 for the second core material 241 is formed between the first barrier film 232 and the second barrier film 242. At this time, the first barrier film 232 not only wraps the first core material 231 and isolates the second core material 241, but also serves as a wrapping material for the second core material 241. This helps the second insulation layer 240 maintain a vacuum state and achieves a good insulation effect while minimizing the amount of material used in the barrier film 220.
[0054] Please see Figure 1 and Figure 2 In some embodiments, the barrier film 220 forms a closed cavity 300 of the core material 210 between the tape body 100 and adjacent barrier films 220. This can reduce the amount of material used in the barrier film 220 while ensuring the thermal insulation performance of the insulation layer 200, and can improve the firmness of the connection between each insulation layer 200 and the tape body 100.
[0055] For example, the first barrier film 232 and the tape body 100 are heat-sealed together to form a closed cavity 300 of the first core material 231, and a vacuum is drawn; two adjacent first core materials 231 are spaced apart, so there may be gaps between two adjacent first barrier films 232, exposing the tape body 100; the second core material 241 is misaligned with the first core material 231, so the second barrier film 242 wrapped on the second core material 241 is heat-sealed with the first barrier film 232 and the tape body 100 to form a closed cavity 300 of the second core material 241.
[0056] Please see Figure 1 and Figure 2 In some embodiments, a gap 250 is formed between two adjacent core materials 210 of the same insulation layer 200. When the core materials 210 of the two adjacent insulation layers 200 are staggered, the amount of core material 210 can be saved. Along the thickness direction of the insulation tape, the core material 210 is bent toward the tape body 100 to form a bend. The bend is located within the gap 250 of the adjacent insulation layers 200, making the structure of the insulation tape more compact. Without affecting the insulation performance of the insulation tape, the thickness of the insulation tape can be reduced, making it easier to store and install.
[0057] Please see Figure 1 and Figure 2 In some embodiments, the tape body 100 has an adhesive side 110 and an adhesive-free side 120, and the insulation layer 200 is disposed on the adhesive-free side 120. Using the adhesive side 110, the insulation tape can be applied to the equipment that needs insulation without the need for additional tools. The insulation layer 200 is disposed on the adhesive-free side 120 to reduce the interference of adhesive on the insulation layer 200.
[0058] In some embodiments, the core material 210 is a flexible core material 210, which can improve the overall flexibility of the thermal insulation tape and facilitate the installation of the thermal insulation tape in installation positions of different shapes.
[0059] In some embodiments, the core material 210 is at least one of organic fiber core material 210 and polyethylene core material 210. The flexibility of the core material 210 is improved by using a flexible material. The present invention does not particularly limit the specific material of the core material 210.
[0060] Please see Figure 1 and Figure 2 In some embodiments, the insulation layer 200 is in the width direction of the insulation tape (e.g., Figure 3 The difference between the dimension of the insulation layer 200 in the c-direction and the dimension of the core material 210 in the width direction of the insulation tape is three to ten millimeters. By limiting the size of the core material 210, space is reserved for heat sealing between the barrier film 220 and the tape body 100, or between the barrier films 220. If the size of the core material 210 is too small, the insulation performance will be affected; if the size of the core material 210 is too large, the connection between the barrier film 220 and the tape body 100, or between the barrier films 220, may be weak. For example, the difference between the dimension of the insulation layer 200 in the width direction of the insulation tape and the dimension of the core material 210 in the width direction of the insulation tape can be four to five millimeters, so that sufficient heat sealing space is reserved at the edge of the insulation tape while ensuring the insulation performance as much as possible.
[0061] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate different embodiments or examples described in the specification.
[0062] In addition, the technical solutions among various embodiments can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist and is not within the protection scope required by the present application.
[0063] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.
Claims
1. A thermal insulation tape, characterized in that, include: The tape itself; The insulation layer includes several core materials and a barrier film, wherein the barrier film is suitable for wrapping the core materials; The insulation layer is disposed on one side of the tape body.
2. The thermal insulation tape according to claim 1, characterized in that, The insulation layer has at least two layers, and the insulation layers are stacked on top of each other.
3. The thermal insulation tape according to claim 2, characterized in that, Each of the aforementioned insulation layers is disposed on the same side of the tape body.
4. The thermal insulation tape according to claim 2, characterized in that, The core materials of two adjacent insulation layers are staggered.
5. The thermal insulation tape according to claim 2, characterized in that, The orthographic projections of two adjacent core materials located in adjacent insulation layers in the thickness direction of the insulation tape at least partially overlap.
6. The thermal insulation tape according to any one of claims 1 to 5, characterized in that, The core materials of two adjacent insulation layers are separated by the diaphragm.
7. The thermal insulation tape according to any one of claims 1 to 5, characterized in that, The barrier film forms a closed cavity for the core material between itself and the tape body and / or adjacent barrier films.
8. The thermal insulation tape according to any one of claims 1 to 5, characterized in that, A gap is formed between two adjacent core materials of the same insulation layer; along the thickness direction of the insulation tape, the core material bends toward the tape body to form a bend, and the bend is located within the gap of the adjacent insulation layers.
9. The thermal insulation tape according to any one of claims 1 to 5, characterized in that, The tape body has an adhesive side and a non-adhesive side, and the heat insulation layer is disposed on the non-adhesive side.
10. The thermal insulation tape according to any one of claims 1 to 5, characterized in that, The core material is a flexible core material.
11. The thermal insulation tape according to any one of claims 1 to 5, characterized in that, The difference between the dimension of the insulation layer in the width direction of the insulation tape and the dimension of the core material in the width direction of the insulation tape is three to ten millimeters.