CN213835141U - Shielding anti-interference adhesive tape - Google Patents

Abstract

The utility model belongs to the technical field of the sticky tape and specifically relates to a shielding anti-interference sticky tape is related to, this sticky tape includes conducting cloth layer and shielding layer, and the shielding layer bonds in the upper surface on conducting cloth layer, is equipped with first glue film between conducting cloth layer and the shielding layer, and conducting cloth is equipped with the first arch of evenly arranging towards one side of shielding layer, and first glue film laminating is in first protruding surface. Due to the viscosity of the first adhesive layer, the shielding layer can be firmly adhered to the conductive cloth layer after the adhesive tape is used for a period of time; and the contact area of the conductive cloth layer on the first adhesive layer is increased by the first protrusion of the conductive cloth layer facing the shielding layer, so that the possibility of reducing the shielding performance of the adhesive tape caused by the falling of the shielding layer of the first adhesive layer is reduced. The present application has the effect of reducing the likelihood of the shielding layer falling off the base layer.

Description

Shielding anti-interference adhesive tape

Technical Field

The application relates to the field of adhesive tapes, in particular to a shielding anti-interference adhesive tape.

Background

With the rapid development of modern technologies, various electronic devices widely enter people's daily life and every production industry, and when the electronic devices work, electromagnetic waves inside and outside the electronic devices can act on electronic elements, so that the normal work of the devices is influenced, and the devices are interfered and damaged.

In the field of electronic devices, shielding tapes are generally used to wrap and shield device components for transmitting high-frequency signals, so as to reduce interference of electromagnetic waves on the devices. The shielding tape generally includes a conductive substrate, a shielding layer and conductive particles covering the conductive substrate, wherein the shielding layer is pressed on the surface of the conductive substrate by a rolling method.

In view of the above-mentioned related arts, the inventor believes that the shielding layer and the base layer are adhered together by the adhesion of the materials thereof, and after the tape is used for a period of time, the shielding layer is easy to fall off, so that the shielding performance of the tape is weakened.

SUMMERY OF THE UTILITY MODEL

In order to reduce the possibility that the shielding layer falls off from the base layer, the application provides a shielding anti-interference adhesive tape.

The utility model provides a shielding anti-interference sticky tape, includes conducting cloth layer and shielding layer, and the shielding layer covers in the conducting cloth layer, is equipped with first glue film between conducting cloth layer and the shielding layer, and one side of conducting cloth towards the shielding layer is equipped with the first arch of evenly arranging, and first glue film laminating is in first protruding surface.

By adopting the technical scheme, due to the viscosity of the first adhesive layer, the shielding layer can be firmly adhered to the conductive cloth layer after the adhesive tape is used for a period of time; and the contact area of the conductive cloth layer on the first adhesive layer is increased by the first protrusion of the conductive cloth layer facing the shielding layer, so that the possibility of reducing the shielding performance of the adhesive tape caused by the falling of the shielding layer of the first adhesive layer is reduced.

Optionally, one side of the conductive fabric layer, which is away from the shielding layer, is coated with a conductive adhesive layer, and conductive particles are uniformly embedded in the conductive adhesive layer.

By adopting the technical scheme, the conductive adhesive layer has good adhesion, so that the conductive fabric layer can be well adhered to an object to be adhered; the conductive adhesive layer also has good conductive performance, so that the objects needing to be bonded can be conducted, the conductive particles in the conductive adhesive layer are abutted to the surfaces of the objects needing to be bonded, a plurality of conduction paths are formed, the connectivity of the conductive adhesive layer is improved, and the conductivity between the objects needing to be bonded is further improved.

Optionally, one side of the conductive adhesive layer, which is far away from the conductive fabric layer, is connected with a release film layer.

By adopting the technical scheme, the release film layer can protect the conductive cloth layer from being damaged when the adhesive tape is not used, so that the conductivity of the adhesive tape is ensured; and from the adhesion that the rete and electrically conductive cloth are close through self to bond in electrically conductive cloth, can be convenient tear from electrically conductive cloth when using.

Optionally, the first adhesive layer is an acrylate pressure sensitive adhesive layer.

Through adopting above-mentioned technical scheme, acrylic ester pressure-sensitive adhesive has firm adhesion under less effort, compares in the direct pressfitting conducting cloth layer of shielding layer, and acrylic ester pressure-sensitive adhesive can make more firm the covering on the conducting cloth layer of shielding layer.

Optionally, the shielding layer includes a carbon fiber layer and a polyurethane coating sprayed on the surface of the carbon fiber layer.

By adopting the technical scheme, the carbon fiber layer has good electromagnetic shielding performance and good flexibility, and when the adhesive tape is wound for use, the carbon fiber can keep the self organization structure; the polyurethane coating has higher wear resistance, and can protect the carbon fiber layer from being damaged, so that the adhesive tape has good shielding performance all the time.

Optionally, the surface of the carbon fiber layer is provided with second protrusions which are uniformly distributed, and one side of the carbon fiber layer, which faces the conductive cloth layer, is also provided with third protrusions which are uniformly distributed.

By adopting the technical scheme, the electromagnetic waves enter the carbon fiber layer from the second protrusion, the carbon fiber layer can be regarded as a waveguide system, and the second protrusion and the third protrusion increase the surface roughness of the waveguide system, so that the loss of the electromagnetic waves inside the carbon fiber layer is increased, the electromagnetic waves transmitted through the carbon fiber layer are reduced, and the shielding capability of the carbon fiber layer is improved; and the contact area of carbon fiber layer and first glue film has been increased to the third arch to increase the adhesion of carbon fiber layer and first glue film, reduced the possibility that carbon fiber layer drops from first glue film.

Optionally, one side of the shielding layer, which is away from the conductive cloth, is covered with a protective layer, and the protective layer is a PET insulating film.

By adopting the technical scheme, the PET insulating film has good insulating property, and the possibility that the current in the bonding piece is changed when the bonded object contacts other charged objects is reduced; and the adhesive tape has higher toughness, can bear larger impact force, and can provide better protection for the adhesive tape.

Optionally, a second adhesive layer is arranged between the protective layer and the polyurethane coating, and the second adhesive layer is a silica gel layer.

By adopting the technical scheme, the silica gel layer has stable chemical characteristics, so that the adhesive tape is suitable for corrosive environments; and the silica gel layer has good heat resistance and impact resistance, so that the adhesive tape can be suitable for high-temperature environments.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the contact area between the conductive cloth layer and the first adhesive layer is increased by the first protrusion of the conductive cloth layer facing the shielding layer, the bonding performance between the shielding layer and the conductive cloth layer is increased, and the possibility of falling off of the shielding layer is reduced;

2. the second bulges and the third bulges of the carbon fiber layer change the reflection angle and the refraction angle of electromagnetic waves, so that the electromagnetic waves transmitted through the carbon fibers are reduced;

the PET insulating film can reduce the interference of an external charged object on the adhesive piece and keep the good conductivity of the adhesive tape.

Drawings

Fig. 1 is a schematic structural diagram of a shielding anti-interference adhesive tape.

Description of reference numerals: 1. a release film layer; 2. a conductive adhesive layer; 21. conductive particles; 3. a conductive cloth layer; 31. a first protrusion; 4. a first glue layer; 5. a shielding layer; 51. a carbon fiber layer; 511. a second protrusion; 512. a third protrusion; 52. a polyurethane coating; 6. a second adhesive layer; 7. and a protective layer.

Detailed Description

The present application is described in further detail below with reference to fig. 1.

The embodiment of the application discloses a shielding anti-interference adhesive tape.

Referring to fig. 1, the shielding anti-interference adhesive tape comprises a release film layer 1, a conductive fabric layer 3, a shielding layer 5 and a protective layer 7 which are sequentially arranged, wherein when the adhesive tape is used, the release film layer 1 is torn, and the conductive fabric layer 3 is attached to and wound on an object needing to be bonded.

A conductive adhesive layer 2 is arranged between the release film layer 1 and the conductive cloth layer 3, the conductive adhesive layer 2 is an epoxy resin-based composite material layer, and the epoxy resin-based composite material has conductivity and good viscosity; the conductive particles 21 are uniformly embedded in the conductive adhesive layer 2, and the conductive particles 21 are copper powder; when the conductive adhesive layer 2 contacts with an object needing to be bonded, the conductive adhesive layer 2 is bonded with the object needing to be bonded through the viscosity of the conductive adhesive layer 2, the conduction between the objects needing to be bonded is realized, the conductive particles 21 increase the conduction path of the object needing to be bonded between the conductive adhesive layer 2 and the bonding piece, and the conductivity of the conductive adhesive layer 2 is improved.

The release film layer 1 is kraft paper coated with silicone oil, the silicone oil is coated on one side of the kraft paper, which faces the conductive adhesive layer 2, and when the adhesive tape is not used, the release film layer 1 can protect the conductive adhesive layer 2 and the conductive fabric layer 3 from being damaged; silicone oil paper has good from the type power, and the pressfitting only has very weak viscidity when conductive adhesive layer 2, when using the sticky tape, from tearing that type rete 1 can be convenient, can separate kraft paper and conductive adhesive layer from the type power of type rete 1, can not take away conductive adhesive layer 2's colloid and conductive particle 21 when making to tear from type rete 1 to guarantee the electric conductivity of sticky tape.

Be equipped with first glue film 4 between electrically conductive cloth layer 3 and the shielding layer 5, first glue film 4 bonds electrically conductive cloth layer 3 and shielding layer 5 together, and first glue film 4 is acrylic ester pressure sensitive adhesive layer, and acrylic ester pressure sensitive adhesive layer has good viscidity to can produce firm adhesion under less pressure effect, make the firm bonding of electrically conductive cloth layer 3 and shielding layer 5.

Conducting fabric layer 3 is equipped with the first arch 31 of evenly arranging towards one side of shielding layer 5, and first arch 31 is the semicircle cylinder type, and first arch 31 extends to the sticky tape opposite side from one side of sticky tape along the width direction of sticky tape, and first arch 31 has increased the area of contact of conducting fabric layer 3 and first glue film 4, has increased the adhesion of conducting fabric layer 3 and first glue film 4, has further reduced shielding layer 5 and the possibility that first glue film 4 drops from conducting fabric layer 3.

Referring to fig. 1, the shielding layer 5 includes a carbon fiber layer 51 and a polyurethane coating 52 sprayed on the surface of the carbon fiber layer 51, the carbon fiber layer 51 has good electromagnetic shielding performance and good flexibility, and the polyurethane coating 52 has high wear resistance and can protect the carbon fiber layer 51 from being damaged, so that the adhesive tape has good shielding performance all the time.

One side of carbon fiber layer 51 towards polyurethane coating 52 is equipped with the second arch 511 of evenly arranging, one side that carbon fiber layer 51 deviates from polyurethane coating 52 also is equipped with the third arch 512 of evenly arranging, the protruding 511 of second and third of carbon fiber layer 51 adopt two surfaces to take the concave and convex compression roller roll-in to make with third arch 512, second arch 511 and third arch 512 all are hemispherical, second arch 511 and third arch 512 arrange in carbon fiber layer 51's both sides respectively.

When the electromagnetic wave is incident on the carbon fiber layer 51, a part of the electromagnetic wave is scattered by the second protrusion 511, and a part of the electromagnetic wave enters the carbon fiber layer 51 from the second protrusion 511, at this time, the carbon fiber layer 51 can be regarded as a waveguide system, because the second protrusion 511 and the third protrusion 512 increase the surface roughness of the waveguide system, the loss of the electromagnetic wave inside the carbon fiber layer 51 is increased, and the electromagnetic wave transmitted through the carbon fiber layer 51 is reduced, so that the electromagnetic wave transmitted through the third protrusion 512 into the conductive fabric layer 3 is greatly reduced, and the shielding capability of the carbon fiber layer 51 is improved by the second protrusion 511 and the third protrusion 512.

The third protrusion 512 of the carbon fiber layer 51 increases the contact area between the carbon fiber layer 51 and the first adhesive layer 4, increases the bonding force between the carbon fiber layer 51 and the first adhesive layer 4, and further reduces the possibility that the carbon fiber layer 51 falls off from the first adhesive layer 4.

And the third arch 512 of carbon fiber layer 51 and the first arch 31 of conducting cloth layer 3 stagger each other, and when carbon fiber layer 51 received the direction and acted as the power of keeping away from conducting cloth layer 3, the third arch 512 and first arch 31 are staggered mutually and can be made the thickness of first glue film 4 even relatively, have reduced the possibility that leads to first glue film 4 to break away from conducting cloth layer 3 easily because of the thickness phase difference is great when first glue film 4 atress.

A second adhesive layer 6 covers one side of the polyurethane coating 52, which is far away from the carbon fiber layer 51, the second adhesive layer 6 is a silica gel layer, a protective layer 7 covers one side of the second adhesive layer 6, which is far away from the polyurethane coating 52, and the protective layer 7 is a PET insulating film layer; the silica gel layer and the PET insulating film both have good insulating property, and the possibility that the current inside the bonding piece is changed when the bonded object contacts other charged objects is reduced.

The implementation principle of the shielding anti-interference adhesive tape in the embodiment of the application is as follows: when the conductive cloth layer 3 is manufactured, the conductive cloth layer 3 is placed on a plane, the surface of the conductive cloth layer 3 is rolled by using an embossing roller with a concave surface, first bulges 31 which are uniformly distributed are formed on the surface of the conductive cloth layer 3, a conductive adhesive layer 2 embedded with conductive particles 21 is uniformly coated on one side of the conductive cloth layer 3, which is far away from the first bulges 31, and a release film layer 1 is adhered on the surface of the conductive adhesive layer 2; then uniformly coating a first glue layer 4 on the surface of the first protrusion 31; and rolling the carbon fiber layer 51 by using two compression rollers with concave-convex surfaces, so that two sides of the carbon fiber layer 51 are respectively provided with a second protrusion 511 and a third protrusion 512, pressing one side of the carbon fiber layer 51 with the third protrusion 512 onto the first adhesive layer 4, spraying the polyurethane coating 52 on the surface of the carbon fiber layer 51 with the second protrusion 511, and finally sequentially pressing the second adhesive layer 6 and the protective layer 7 onto the surface of the polyurethane coating 52 away from the carbon fiber layer 51.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. A shielding anti-interference adhesive tape is characterized in that: including conducting fabric layer (3) and shielding layer (5), shielding layer (5) bond in the upper surface of conducting fabric layer (3), be equipped with first glue film (4) between conducting fabric layer (3) and shielding layer (5), conducting fabric layer (3) are equipped with first arch (31) of evenly arranging towards one side of shielding layer (5), first glue film (4) laminate in first arch (31) surface.

2. The tape of claim 1, wherein: one side that conducting layer (3) deviates from shielding layer (5) all scribbles conducting resin layer (2), conducting resin layer (2) are evenly mixed with conductive particle (21).

3. The tape of claim 2, wherein: one side of the conductive adhesive layer (2) departing from the conductive fabric layer (3) is connected with a release film layer (1).

4. The tape of claim 1, wherein: the first adhesive layer (4) is an acrylate pressure-sensitive adhesive layer.

5. The tape of claim 1, wherein: the shielding layer (5) comprises a carbon fiber layer (51) and a polyurethane coating (52) sprayed on the surface of the carbon fiber layer (51).

6. The tape of claim 5, wherein: second bulges (511) which are uniformly distributed are arranged on one side, facing the polyurethane coating (52), of the carbon fiber layer (51), and third bulges (512) which are uniformly distributed are arranged on one side, facing the conductive cloth layer (3), of the carbon fiber layer (51).

7. The tape of claim 6, wherein: one side of the shielding layer (5) departing from the conductive cloth is covered with a protective layer (7), and the protective layer (7) is a PET insulating film.

8. The tape of claim 7, wherein: and a second adhesive layer (6) is arranged between the protective layer (7) and the polyurethane coating (52), and the second adhesive layer (6) is a silica gel layer.

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