CN110982441A - Conductive cloth shielding adhesive tape and manufacturing process thereof - Google Patents
Conductive cloth shielding adhesive tape and manufacturing process thereof Download PDFInfo
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- CN110982441A CN110982441A CN201911348927.3A CN201911348927A CN110982441A CN 110982441 A CN110982441 A CN 110982441A CN 201911348927 A CN201911348927 A CN 201911348927A CN 110982441 A CN110982441 A CN 110982441A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/21—Paper; Textile fabrics
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/29—Laminated material
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/40—Adhesives in the form of films or foils characterised by release liners
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J9/00—Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks
- C09J9/02—Electrically-conducting adhesives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/326—Applications of adhesives in processes or use of adhesives in the form of films or foils for bonding electronic components such as wafers, chips or semiconductors
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/12—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers
- C09J2301/122—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers the adhesive layer being present only on one side of the carrier, e.g. single-sided adhesive tape
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/16—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the structure of the carrier layer
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/314—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive layer and/or the carrier being conductive
Abstract
The invention provides a conductive cloth shielding adhesive tape, which comprises a conductive cloth layer, wherein an acrylic or polyurethane solution photocuring or thermocuring hardening layer is coated on the upper surface of the conductive cloth layer; the lower surface of the conductive cloth layer is sequentially provided with a conductive adhesive layer and a release paper layer from top to bottom. The invention also provides a manufacturing process of the conductive cloth shielding adhesive tape. The invention solves the problems of poor wear resistance, large thickness and complex manufacturing process of the traditional conductive cloth shielding tape.
Description
Technical Field
The invention belongs to the technical field of manufacturing of shielding materials, and particularly relates to a conductive cloth shielding adhesive tape and a manufacturing process thereof.
Background
Electronic shielding materials are widely used in various semiconductor display products, computers and their peripherals, communication products, and consumer electronics products as important functional materials in the electronic industry. As the performance of consumer electronics products continues to increase in the field of semiconductor displays, the variety and performance of electronic shielding materials required has also increased.
The conductive cloth shielding adhesive tape is one of electronic shielding materials and is widely applied to various products such as displays, electronics, communication, mobile phones, connectors and the like; when high-frequency transmission is carried out between the electronic components, the conductive cloth shielding adhesive tape is used for shielding or isolating electromagnetic waves or radio interference; in particular, in the 5G rapidly developing era, it is important to prevent the interference of electronic components and reduce the interference to other components and devices, and as the thickness requirement of display products (such as mobile phones and PADs) becomes thinner and thinner, the requirements on the thickness, performance and the like of the conductive fabric shielding tape become stricter, however, the conventional conductive fabric shielding tape still has the following problems:
1. the existing conductive cloth shielding adhesive tape is poor in wear resistance, although the problem of poor wear resistance is solved by adopting a scheme of compounding 0.15mm nylon cloth and conductive cloth in some technologies, the thickness of the conductive cloth shielding adhesive tape is increased, the wear resistance still cannot meet the current technological requirements, particularly, in the installation or use process, the conductive cloth shielding adhesive tape is easy to wear and scratch, the shielding performance of the conductive cloth shielding adhesive tape is greatly reduced, and the quality problem of products is caused.
2. The existing conductive cloth shielding adhesive tape has complex manufacturing process and complex operation. Resulting in low production efficiency and difficult control of product yield.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a conductive cloth shielding adhesive tape and a manufacturing process thereof, and solves the problems of poor wear resistance, large thickness, complex manufacturing process and the like of the conventional conductive cloth shielding adhesive tape.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the invention firstly provides a conductive cloth shielding adhesive tape, which comprises a conductive cloth layer, wherein an acrylic or polyurethane solution photocuring or thermocuring hardening layer is coated on the upper surface of the conductive cloth layer; the lower surface of the conductive cloth layer is sequentially provided with a conductive adhesive layer and a release paper layer from top to bottom.
Preferably, the conductive fabric layer is a substrate metal plated layer or an aluminum foil fiber layer or a combined layer, and the combined layer is a conductive layer, a resistance reducing layer and a protective layer which are sequentially arranged on the surface of the substrate from inside to outside.
Preferably, the conductive cloth layer and the hardening layer are further provided with wave-absorbing shielding film layers.
Preferably, the conductive layer is a sputtered copper layer or a sputtered nickel layer, the resistance reducing layer is an electroplated copper layer, and the protective layer is an electroplated nickel layer.
Preferably, still be equipped with PET thin layer or protection printing ink layer between electrically conductive cloth layer and the sclerosis layer.
Preferably, the PET film is one of a polyester film, a polyolefin film, a polyamide film, a polyurethane film and a polystyrene film, and the thickness of the PET film is 2-50 um.
Preferably, the wave-absorbing shielding film layer also contains nano graphite powder.
Preferably, the thickness of the hardening layer is 5-20 um.
Preferably, the manufacturing process method of the conductive cloth shielding tape is sequentially carried out by the following steps:
step one, desizing and cleaning a base material;
step two, sputtering copper or nickel on the surface of the base material after desizing and cleaning to form a conductive layer;
electroplating copper on the conducting layer in the second step to form a resistance reducing layer;
electroplating nickel on the surface of the resistance reducing layer in the step three to form a protective layer, and finishing the manufacturing of the conductive cloth layer;
coating acrylic or polyurethane solution on the upper surface of the conductive cloth layer, and carrying out photocuring or thermocuring on the conductive cloth layer to form a hardened layer;
and sixthly, coating a conductive adhesive layer and a composite release paper layer on the lower surface of the conductive cloth layer from top to bottom in sequence to finish the manufacture of the conductive cloth shielding adhesive tape.
Preferably, the process conditions in the third step are that the temperature is 60-100 ℃, the time is 2-10 minutes, the UV is 365nm, and the energy is more than 500mJ/cm 2.
The invention has the beneficial effects that:
1. the product adopts polyester fiber as a base material, effectively improves the crease resistance and the shape retention of the conductive fabric shielding adhesive tape, particularly coats acrylic or polyurethane solution on the outer side of the conductive fabric layer, forms a hardened layer with the thickness of less than 0.02mm and the hardness of 2-8H after the solution is cured, effectively improves the wear resistance of the conductive fabric shielding adhesive tape (avoids the reduction of the shielding performance of the conductive fabric shielding adhesive tape due to abrasion and scratching in the installation or use process) on the premise of ensuring the shielding performance of the conductive fabric shielding adhesive tape, and simultaneously has smaller thickness; the requirements of the prior art are met (the prior electronic component is small in size, so that the required thickness of the conductive cloth shielding adhesive tape is small), and the application range of the product is effectively widened.
2. The upper side of the conductive cloth layer is compounded with the wave-absorbing shielding film containing the nano graphite powder, so that the capability of the product for absorbing electromagnetic waves is effectively improved. The conductive cloth layer adopts a vacuum sputtering mode to sputter copper or nickel on the base material to form a conductive layer, so that the conductivity of the conductive cloth layer is ensured; plating copper on the conductive layer in an electroplating mode to form a resistance reducing layer, so that the conductive layer and the resistance reducing layer can obtain certain resistivity while the bonding capacity of the conductive layer and the resistance reducing layer is improved; and finally, plating nickel on the drag reduction layer in an electroplating mode for protection.
3. This product sclerosis layer not only can set up on inhaling wave shielding rete, still can set up on conducting fabric layer or PET film, respectively to the conducting fabric shielding sticky tape of different structures, the setting on sclerosis layer is also corresponding change to this product that obtains good shielding effect and good wearability.
4. The invention has simple manufacturing process and convenient and fast operation.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic cross-sectional view of a conductive fabric shielding tape according to an embodiment;
FIG. 2 is a schematic cross-sectional view of a conductive fabric shielding tape according to a second embodiment;
FIG. 3 is a schematic cross-sectional view of a conductive fabric shielding tape according to a third embodiment;
FIG. 4 is a schematic structural diagram of the conductive fabric layer of the present embodiment as a combined layer;
fig. 5 is a flow chart of the manufacturing process of the conductive cloth shielding tape in this embodiment.
Description of the drawings:
11: conductive fabric layer 12: hardened layer 13: conductive adhesive layer
14: release paper layer 15: the wave-absorbing shielding film layer 16: base material
31: PET film 111: conductive layer 112: resistance reducing layer 113: protective layer
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
In the present invention, the terms "mounted," "connected," "fixed," and the like are used in a broad sense, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, the practical directional terms such as "upper, lower, left, right" generally refer to upper, lower, left, right as shown in the drawings, unless otherwise specified; "inner and outer" refer to the inner and outer relative to the profile of the components themselves.
Example 1
Referring to fig. 1, the present embodiment provides a conductive fabric shielding tape, including a conductive fabric layer 11, wherein an acrylic or polyurethane solution is coated on an upper surface of the conductive fabric layer 11, and is photo-cured or thermally cured to form a cured layer 12; the lower surface of the conductive cloth layer 11 is sequentially provided with a conductive adhesive layer 13 and a release paper layer 14 from top to bottom; the release paper layer 14 is a protective layer, is mainly used for protecting the conductive shielding material in the transportation and preservation processes, and is removed through a film tearing process when the conductive cloth shielding adhesive tape is used, and the thickness of the conductive cloth shielding adhesive tape is about 50-200 um. In the bookIn the embodiment, the acrylic photo-curing solution with the viscosity coefficient of 20-100 cps is coated on the conductive fabric layer 11, preferably in a dust-free room below 10000 levels, so that the pollution of impurities such as dust to the coated acrylic photo-curing solution is prevented, the wear resistance and the shielding performance of the conductive fabric shielding tape are effectively improved (if the impurities such as dust exist in the acrylic photo-curing solution, the antistatic breakdown capacity or the electrostatic shielding capacity of the conductive fabric shielding tape is easily reduced, and the overall performance of the conductive fabric shielding tape is influenced), and then the conductive fabric shielding tape is heated at 60-100 ℃ for 2-10 minutes, UV is 365nm, and energy is more than 500mJ/cm2The acrylic photo-curing solution is cured into the hardened layer 12 with the thickness of 5-20um and the hardness of 2-8H in the process environment, so that the wear resistance of the product is effectively improved, and the reduction of the shielding performance of the conductive cloth shielding adhesive tape caused by damage or scratch on the surface in the installation or use process is avoided.
In the conductive fabric layer 11 of this embodiment, the base material 16 (shown in fig. 4) is subjected to a desizing, cleaning, sputtering, and other processes to form the conductive fabric layer 11 with conductive performance, but certainly, a nickel layer may be sputtered on the conductive fabric layer 11 to form a protection layer for preventing copper oxidation, and the conductive fabric layer 11 may be further processed into a metal (gold or silver) plated conductive fabric layer 11 or an aluminum foil fiber composite fabric conductive fabric layer 11 according to the requirement of the final product for conductive performance.
The base material 16 of this embodiment may be a polyester fiber material, and since the polyester fiber has good wrinkle resistance and shape retention, and also has waterproof, antibacterial, and deodorant effects, the conductive fabric shielding tape using the polyester fiber as the base material 16 also has good wrinkle resistance, retention, waterproof, and antibacterial and deodorant properties; the substrate 16 may also be a non-woven fabric, which has the characteristics of moisture resistance, air permeability, flexibility, light weight, no combustion supporting and the like, and the non-woven fabric has no warp and weft, is very convenient to cut and cut, and is light in weight and easy to shape; in addition, because the thickness of the hardening layer 12 is smaller, the product has better wear resistance and thinner thickness, can be widely used among precise and fine electronic components, and has better shielding effect. The release paper layer 14 with a thickness of 50-200um is adopted in the embodiment, no limitation is made on the release paper on any material or thickness, and the corresponding release paper can be selected according to the requirement to protect the conductive adhesive layer 13.
Further, as shown in fig. 4, a conductive layer 111 is formed by sputtering copper or nickel on the substrate 16 in a vacuum sputtering manner, so as to ensure the conductivity of the conductive fabric layer 11; plating copper on the conductive layer 111 by electroplating to form the resistance reducing layer 112, so that the electrical resistivity of the conductive cloth layer 11 is reduced to the minimum (the shielding performance of the conductive cloth shielding adhesive tape is improved) while the combining capacity of the conductive layer 111 and the resistance reducing layer 112 is improved; finally, plating nickel on the resistance reducing layer 112 by adopting an electroplating mode to form a protective layer 113 for protecting the conductive cloth layer 11 and preventing the surface of the resistance reducing layer 112 from being oxidized. In addition, the conductive cloth layer 11 in the present embodiment may also be manufactured by other methods, for example, the conductive cloth layer 11 formed by plating metal on the substrate 16 or by using aluminum foil fibers as the conductive cloth layer 11, so as to expand the range of material options of the conductive cloth layer 11, and is not limited to the manufacturing method in the present embodiment.
Referring to fig. 5, the invention further provides a manufacturing process of the conductive fabric shielding tape, which comprises the following steps in sequence:
step one, desizing and cleaning a base material 16;
step two, sputtering copper or nickel on the surface of the base material 16 after desizing and cleaning to form a conductive layer 111;
step three, electroplating copper on the conductive layer 111 in the step two to form a resistance reducing layer 112;
step four, electroplating nickel on the surface of the resistance reducing layer 112 in the step three to form a protective layer 113, and finishing the manufacturing of the conductive cloth layer 11;
coating an acrylic photo-curing solution on the upper surface of the conductive cloth layer 11, and drying and curing the acrylic photo-curing solution to form a hardened layer 12;
and sixthly, coating a conductive adhesive layer 13 and a composite release paper layer 14 on the lower surface of the conductive fabric layer 11 from top to bottom in sequence to finish the manufacture of the conductive fabric shielding adhesive tape.
The acrylic photo-curing solution in the fifth step is coated by RIPcoat, CommaCoater, Gravure coat, Mrico coat, Roll coat, and Slotdie coat.
In addition, the wear resistance of the hardened layer 12 is detected by using steel wool after the conductive fabric shielding adhesive tape is manufactured, so that the good wear resistance of the conductive fabric shielding adhesive tape is ensured, and the product quality is guaranteed.
Example 2
Referring to fig. 2, a preferred embodiment 2 of the present invention provides a conductive fabric shielding tape, which is different from embodiment 1 in that a wave-absorbing shielding film layer 15 is disposed between a conductive fabric layer 11 and a hardened layer 12; the wave-absorbing shielding film layer 15 containing the nano graphite powder is compounded on the upper side of the conductive cloth layer 11, so that the conductive cloth shielding adhesive tape has the capability of absorbing electromagnetic waves or attenuating the electromagnetic waves, the conductive cloth shielding adhesive tape with the wave-absorbing shielding film layer is obtained, and the application range of the product is widened. The wearing resistance of this product can effectively be improved to the sclerosis layer in this embodiment, avoids in installation or use, because of damage or fish tail surface to lead to the shielding performance of electrically conductive cloth shielding sticky tape to descend.
Example 3
Referring to fig. 3, a preferred embodiment 3 of the present invention provides a conductive cloth shielding tape, which is different from embodiment 1 in that a PET film 31 with a thickness of 2-50um is disposed between the conductive cloth layer 11 and the hardened layer 12, so as to further improve the flexibility and heat resistance of the conductive cloth shielding tape (the PET film 31 has good flexibility and heat resistance).
Further, the PET film 31 is one of a polyester film, a polyolefin film, a polyamide film, a polyurethane film, and a polystyrene film. Further, a polyethylene terephthalate film or the like can be preferably used as the base material 16 of the PET film from the viewpoint of easiness of acquisition, mechanical strength, heat resistance, cost, rust resistance, and the like.
Further, the hardened layer 12 in this embodiment may be a PET film 31, or an acrylic or polyurethane solution may be coated on the PET film 31, and the solution may be photo-cured or thermo-cured, so that the hardened layer 12 formed is a PTE film with the acrylic or polyurethane solution on the surface, and finally is combined with the conductive fabric layer 11 to complete the fabrication; in addition, in this embodiment, both the conductive fabric layer 11 and the PET film can be coated with protective ink.
In conclusion, the product adopts the polyester fiber as the base material 16, so that the wrinkle resistance, the retentivity, the waterproofness, the antibacterial property and the deodorization performance of the conductive cloth shielding adhesive tape are effectively improved; the conductive cloth layer 11 (see fig. 4) is formed by sputtering and plating on the surface of the substrate 16, and the conductive cloth layer 11 formed by plating metal on the substrate 16 or the aluminum foil fiber is used as the conductive cloth layer 11, so as to expand the optional range of the material of the conductive cloth layer 11, but the method is not limited to the manufacturing method in the embodiment. The surface of the conductive cloth layer 11 is coated with acrylic or polyurethane solution to form a hardened layer 12 after being cured, so that the wear resistance of the conductive cloth shielding tape is effectively improved, and meanwhile, a PET film 31 with the thickness of 2-50um can be arranged between the conductive cloth layer 11 and the hardened layer 12, so that the flexibility of the conductive cloth shielding tape is effectively improved while the wear resistance of the conductive cloth shielding tape is ensured; the wave-absorbing shielding film layer 15 containing nano graphite powder is arranged between the conductive cloth layer 11 and the hardened layer 12 (see fig. 2), so that the conductive cloth shielding tape has the capability of absorbing or attenuating electromagnetic waves.
This product conducting fabric layer 11 thickness is for being less than 80um, and conducting resin layer 13 thickness scope 2 ~ 50um, and wherein, 15 ~ 25um are the best effect scope, and sclerosis layer 12 thickness is 5-20um, and sclerosis layer 12 hardness reaches 2-8H, under the prerequisite of ensureing this product shielding property, effectively promotes its wearability, pliability to thinner thickness has simultaneously.
The acrylic photo-curing solution with the viscosity coefficient of 20-100 cps is coated on the PET film 31, preferably in a clean room below 10000 levels, so as to prevent impurities such as dust from polluting the coated acrylic photo-curing solution, effectively improve the wear resistance and shielding performance of the conductive cloth shielding tape (if impurities such as dust exist in the acrylic photo-curing solution, the antistatic breakdown capability or electrostatic shielding capability of the conductive cloth shielding tape is easily reduced, thereby affecting the overall performance of the conductive cloth shielding tape), and then solidify the acrylic photo-curing solution into a hardened layer 12 with the thickness of 5-20um and the hardness of 2-8H under the process environment with the temperature of 60-100 ℃, the time of 2-10 minutes, the UV of 365nm and the energy of more than 500mJ/cm2, thereby effectively improving the wear resistance of the product, the reduction of the shielding performance of the conductive cloth shielding adhesive tape caused by damage or scratch of the surface in the installation or use process is avoided.
In addition, the structure of the conductive cloth shielding tape in the invention is not limited to this, and different structural modes can be selected according to actual requirements. Further both sides all are equipped with wave-absorbing shielding layer 15 about the electrically conductive cloth layer 11, PET film 31, sclerosis layer 12, make electrically conductive cloth layer 11 both sides all have electrically conductive shielding performance, at upside or downside coating conductive adhesive layer 13 afterwards, compound with from type paper layer 14 at last.
The above embodiments are only preferred embodiments of the present invention, and it should be understood that the above embodiments are only for assisting understanding of the method and the core idea of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalents and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A conductive cloth shielding tape, characterized in that: the light-cured acrylic or polyurethane solution is coated on the upper surface of the conductive cloth layer, and a hardened layer is formed after the light curing and the heat curing are carried out on the acrylic or polyurethane solution; the lower surface of the conductive cloth layer is sequentially provided with a conductive adhesive layer and a release paper layer from top to bottom.
2. The conductive fabric shielding tape of claim 1, wherein: the conductive cloth layer is a substrate metal plated layer or an aluminum foil fiber layer or a combined layer, and the combined layer is a conductive layer, a resistance reducing layer and a protective layer which are sequentially arranged on the surface of the substrate from inside to outside.
3. A conductive shielding tape according to claim 1 or 2, wherein: the conducting fabric layer with still be provided with between the sclerosis layer and inhale ripples shielding rete.
4. The conductive fabric shielding tape of claim 2, wherein: the conductive layer is a sputtered copper layer or a sputtered nickel layer, the resistance reducing layer is an electroplated copper layer, and the protective layer is an electroplated nickel layer.
5. The conductive fabric shielding tape of claim 3, wherein: still be equipped with PET thin layer or protection printing ink layer between electrically conductive cloth layer and the sclerosis layer.
6. The conductive fabric shielding tape of claim 5, wherein: the PET film is one of polyester film, polyolefin film, polyamide film, polyurethane film and polystyrene film, and the thickness of the PET film is 2-50 um.
7. The conductive fabric shielding tape of claim 3, wherein: the wave-absorbing shielding film layer contains nano graphite powder.
8. The conductive fabric shielding tape of claim 1, wherein: the thickness of the hardening layer is 5-20 um.
9. A manufacturing process method of a conductive cloth shielding adhesive tape is characterized by comprising the following steps in sequence:
step one, desizing and cleaning a base material;
step two, sputtering copper or nickel on the surface of the base material after desizing and cleaning to form a conductive layer;
electroplating copper on the conducting layer in the second step to form a resistance reducing layer;
electroplating nickel on the surface of the resistance reducing layer in the step three to form a protective layer, and finishing the manufacturing of the conductive cloth layer;
coating acrylic or polyurethane solution on the upper surface of the conductive cloth layer, and carrying out photocuring or thermocuring on the conductive cloth layer to form a hardened layer;
and sixthly, coating a conductive adhesive layer and a composite release paper layer on the lower surface of the conductive cloth layer from top to bottom in sequence to finish the manufacture of the conductive cloth shielding adhesive tape.
10. The process for manufacturing the conductive cloth shielding tape according to claim 9, wherein: in the fifth step, the temperature is 60-100 ℃, the time is 2-10 minutes, the UV is 365nm, and the energy is 2 larger than 500 mJ/cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911348927.3A CN110982441A (en) | 2019-12-24 | 2019-12-24 | Conductive cloth shielding adhesive tape and manufacturing process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911348927.3A CN110982441A (en) | 2019-12-24 | 2019-12-24 | Conductive cloth shielding adhesive tape and manufacturing process thereof |
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| Publication Number | Publication Date |
|---|---|
| CN110982441A true CN110982441A (en) | 2020-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911348927.3A Pending CN110982441A (en) | 2019-12-24 | 2019-12-24 | Conductive cloth shielding adhesive tape and manufacturing process thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006117747A (en) * | 2004-10-20 | 2006-05-11 | Nitto Shinko Kk | Conductive adhesive tape |
| CN106061223A (en) * | 2016-07-15 | 2016-10-26 | 胡银坤 | Electromagnetic shielding film and preparation method thereof |
| CN209652218U (en) * | 2019-02-25 | 2019-11-19 | 苏州义铠轩电子科技有限公司 | Nickel plating copper foil shielding tape |
-
2019
- 2019-12-24 CN CN201911348927.3A patent/CN110982441A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006117747A (en) * | 2004-10-20 | 2006-05-11 | Nitto Shinko Kk | Conductive adhesive tape |
| CN106061223A (en) * | 2016-07-15 | 2016-10-26 | 胡银坤 | Electromagnetic shielding film and preparation method thereof |
| CN209652218U (en) * | 2019-02-25 | 2019-11-19 | 苏州义铠轩电子科技有限公司 | Nickel plating copper foil shielding tape |
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Application publication date: 20200410 |