CN212246861U - Shading type electromagnetic shielding adhesive tape - Google Patents
Shading type electromagnetic shielding adhesive tape Download PDFInfo
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- CN212246861U CN212246861U CN202020554776.9U CN202020554776U CN212246861U CN 212246861 U CN212246861 U CN 212246861U CN 202020554776 U CN202020554776 U CN 202020554776U CN 212246861 U CN212246861 U CN 212246861U
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- sensitive adhesive
- conductive pressure
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- 239000002390 adhesive tape Substances 0.000 title description 9
- 239000010410 layer Substances 0.000 claims abstract description 105
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims abstract description 38
- 229910052751 metal Inorganic materials 0.000 claims abstract description 30
- 239000002184 metal Substances 0.000 claims abstract description 30
- 239000012790 adhesive layer Substances 0.000 claims abstract description 17
- 239000000758 substrate Substances 0.000 claims abstract description 17
- 229920000728 polyester Polymers 0.000 claims abstract description 13
- 239000012528 membrane Substances 0.000 claims abstract description 6
- 229920006267 polyester film Polymers 0.000 claims abstract description 4
- 239000011888 foil Substances 0.000 claims description 22
- 239000002245 particle Substances 0.000 claims description 18
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 229920000058 polyacrylate Polymers 0.000 abstract description 16
- 239000000203 mixture Substances 0.000 abstract description 10
- 230000009477 glass transition Effects 0.000 abstract description 9
- 239000012948 isocyanate Substances 0.000 abstract description 7
- 150000002513 isocyanates Chemical class 0.000 abstract description 7
- 239000000975 dye Substances 0.000 description 24
- 239000010408 film Substances 0.000 description 21
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 16
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 15
- 239000000945 filler Substances 0.000 description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 10
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 9
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 8
- 239000010409 thin film Substances 0.000 description 8
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 7
- 229910052759 nickel Inorganic materials 0.000 description 6
- FWLHAQYOFMQTHQ-UHFFFAOYSA-N 2-N-[8-[[8-(4-aminoanilino)-10-phenylphenazin-10-ium-2-yl]amino]-10-phenylphenazin-10-ium-2-yl]-8-N,10-diphenylphenazin-10-ium-2,8-diamine hydroxy-oxido-dioxochromium Chemical compound O[Cr]([O-])(=O)=O.O[Cr]([O-])(=O)=O.O[Cr]([O-])(=O)=O.Nc1ccc(Nc2ccc3nc4ccc(Nc5ccc6nc7ccc(Nc8ccc9nc%10ccc(Nc%11ccccc%11)cc%10[n+](-c%10ccccc%10)c9c8)cc7[n+](-c7ccccc7)c6c5)cc4[n+](-c4ccccc4)c3c2)cc1 FWLHAQYOFMQTHQ-UHFFFAOYSA-N 0.000 description 5
- 239000006229 carbon black Substances 0.000 description 5
- 238000012538 light obscuration Methods 0.000 description 5
- 229920000767 polyaniline Polymers 0.000 description 5
- 239000000377 silicon dioxide Substances 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000008033 biological extinction Effects 0.000 description 4
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 4
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 4
- 229920006222 acrylic ester polymer Polymers 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- CEGOLXSVJUTHNZ-UHFFFAOYSA-K aluminium tristearate Chemical compound [Al+3].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CEGOLXSVJUTHNZ-UHFFFAOYSA-K 0.000 description 2
- 229940063655 aluminum stearate Drugs 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 2
- 235000013539 calcium stearate Nutrition 0.000 description 2
- 239000008116 calcium stearate Substances 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 2
- 239000011363 dried mixture Substances 0.000 description 2
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000010216 calcium carbonate Nutrition 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Adhesive Tapes (AREA)
- Laminated Bodies (AREA)
Abstract
The utility model relates to a shading type electromagnetic shield sticky tape, include the substrate layer that comprises thin layer and metal forming, black shading insulating layer, setting deviate from the black electrically conductive pressure sensitive adhesive layer of thin layer one side and set up the release type membrane that deviates from metal forming one side on the surface of black electrically conductive pressure sensitive adhesive layer on the surface of metal forming, still be provided with the adhesive layer that contains polyester composition and isocyanate composition between thin layer and the metal forming. The utility model provides a light-shading type electromagnetic shield sticky tape, the thin layer is polyester film, the substrate layer is not less than 20N according to the fracture load that III type sample was surveyed in GB/T13022 + 1991 national standard, improve the tensile strength of product, difficult breaking during heavy industry, have appropriate polar group and have appropriate molecular weight distribution in the acrylic polymer molecular chain, the glass transition temperature of acrylic polymer is at-60 ~ 0 ℃, the temperature is suitable, but improve heavy industry nature, avoid sticking up the limit, overall structure is simple, application prospect is wide.
Description
Technical Field
The utility model belongs to the technical field of the sticky tape, concretely relates to shading type electromagnetic shield sticky tape.
Background
With the development of the manufacturing technology of electronic consumer products, more and more products such as displays, liquid crystal televisions, touch panels, mobile phones and the like need to use conductive tapes with shading and electromagnetic shielding functions to edge the display module. And, display module assembly is in order to meet market demand, and its frame is also more and more narrow, leads to the sticky tape to diminish in the bonding area of display surface, and the sticky tape sticks up the limit more easily in display module assembly use, consequently also more and more high to the adhesive property requirement of sticky tape.
On the other hand, a defective product is generated with a certain probability in the manufacturing process of the display module, and the edge-covering adhesive tape needs to be disassembled for repair, so that certain requirements are provided for the tensile strength of the edge-covering adhesive tape and the residual adhesive amount of the pressure-sensitive adhesive. But the common electromagnetic shielding adhesive tape is difficult to meet the requirements at present.
SUMMERY OF THE UTILITY MODEL
For solving the technical problem that exists among the prior art, the utility model aims to provide a shading type electromagnetic shield sticky tape can be used for the display module group to bordure, solves current sticky tape and easily sticks up the limit, can heavily work nature subalternation problem.
In order to realize the above purpose, reach above-mentioned technological effect, the utility model discloses a technical scheme be:
a shading type electromagnetic shielding tape comprises a substrate layer composed of a thin film layer and a metal foil, a black shading insulating layer arranged on one side of the surface of the thin film layer, a black conductive pressure-sensitive adhesive layer arranged on one side of the surface of the metal foil, which is far away from the thin film layer, and a release film arranged on one side of the surface of the black conductive pressure-sensitive adhesive layer, which is far away from the metal foil, wherein an adhesive layer containing polyester and isocyanate components is further arranged between the thin film layer and the metal foil, the black conductive pressure-sensitive adhesive layer components comprise black dye, conductive particles and acrylate polymers, the substrate layer is tested at a test speed of 50 +/-5 mm/min according to a III type sample in GB/T13022 and 1991 national standard, and the measured breaking load is not.
Further, the resistance of the black conductive pressure-sensitive adhesive surface of the light-shielding electromagnetic shielding tape after the release film is torn off is tested according to part 4.5.11 in the MIL-DTL-83528C standard, and the measured resistance R is not more than 0.5 omega.
Further, the thin film layer is a polyester type thin film, and the thickness is 4um ~ 20um, preferably 7um ~ 15 um.
Further, the metal foil is an aluminum foil, and the thickness of the metal foil is 5um to 20um, preferably 7um to 15 um.
Further, the thickness of the black shading insulating layer is 2um to 10um, preferably 3um to 8 um.
Further, the black shading insulating layer comprises a dye and a filler with a light extinction function, wherein the dye and the filler with the light extinction function respectively account for 2% -12% (preferably 5% -8%) and 0.3% -5% (preferably 0.5% -2%) of the black shading insulating layer according to the mass ratio.
Further, the black dye comprises one or two of aniline black and carbon black.
Further, the filler with the delustering function comprises one or a combination of more of silicon dioxide, calcium carbonate, talcum powder, aluminum stearate and calcium stearate, and preferably silicon dioxide.
Further, the adhesive layer between thin film layer and the metal foil, thickness is 2um ~ 10um, preferably 4um ~ 8 um.
Furthermore, the polyester component in the adhesive layer between the film layer and the metal foil contains a hydroxyl structure, and the hydroxyl content is 1-100 mgKOH/g, preferably 2-50 mgKOH/g.
Further, the isocyanate component in the adhesive layer between the film layer and the metal foil comprises one or more of oligomers of compounds such as isophorone diisocyanate (IPDI), Toluene Diisocyanate (TDI), p-diphenylmethane diisocyanate (MDI), Hexamethylene Diisocyanate (HDI), and the like.
Furthermore, the polyester component and the isocyanate component in the adhesive layer between the film layer and the metal foil are 100: 1-100: 20, preferably 100: 4-100: 15 in mass ratio.
Further, the thickness of the black conductive pressure sensitive adhesive layer is 10um to 60um, preferably 20um to 40 um.
Further, the black dye in the black conductive pressure-sensitive adhesive layer comprises one or a combination of aniline black and carbon black.
Further, the conductive particles in the black conductive pressure sensitive adhesive layer are one or a combination of several of nickel powder, iron powder, copper powder, silver-coated copper powder, nickel-coated graphite powder and nickel-coated iron powder, and preferably, the nickel powder and the nickel-coated graphite powder.
Furthermore, the ratio of the D50 size of the conductive particles in the black conductive pressure sensitive adhesive layer measured according to GB/T19077-2016 standard to the thickness of the black conductive pressure sensitive adhesive layer is 0.3-2: 1, preferably 0.8-1.5: 1.
Furthermore, the glass transition temperature of the acrylic polymer in the black conductive pressure-sensitive adhesive layer is-60 ℃ to 0 ℃, and preferably-40 ℃ to-20 ℃.
Further, the mass ratio of the black dye to the conductive particles to the acrylate polymer is 1-10: 5-40: 100, preferably 2-5: 10-30: 100.
Further, it is polyester type from the type membrane to leave the type membrane, and thickness is 20um ~ 125um, preferably 36um ~ 75 um.
Furthermore, the release force of the contact surface of the release film and the black conductive pressure sensitive adhesive layer is 3-50 gf/in, preferably 5-10 gf/in.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a shading type electromagnetic shield sticky tape, include the substrate layer that comprises thin layer and metal forming, set up on the thin layer surface, deviate from the black shading insulating layer of metal forming one side, set up the black electrically conductive pressure sensitive adhesive layer that deviates from thin layer one side on the metal forming surface, set up on black electrically conductive pressure sensitive adhesive layer surface, deviate from the release film of metal forming one side, still be provided with the adhesive layer that contains polyester composition and isocyanate composition between thin layer and the metal forming. The utility model provides a shading type electromagnetic shield sticky tape, black electrically conductive pressure sensitive adhesive layer's composition includes black dyestuff, conductive particle and acrylic ester polymer, black shading insulating layer's composition contains dyestuff and the filler that has the extinction function, the thin layer is polyester film, thickness is 4 ~ 20um, improve the tensile strength of product, be difficult for breaking during the heavy industry, have suitable polar group (hydroxyl or carboxyl) and have suitable glass transition temperature in the acrylic ester polymer molecular chain, the glass transition temperature of acrylic ester polymer is at-60 ~ 0 ℃, the temperature is suitable, but improve the heavy industry nature, avoid sticking up the limit, overall structure is simple, and application prospect is wide.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic diagram of the edge covering test of the present invention;
wherein, 1-black shading insulating layer; 2-a substrate layer; 21-a thin film layer; 22-an adhesive layer; 23-a metal foil structure; 3-black conductive pressure sensitive adhesive layer; 4-release film.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the invention can be more easily understood by those skilled in the art, thereby making the scope of the invention more clearly defined.
As shown in fig. 1-2, a shading type electromagnetic shielding tape, includes substrate layer 2, and substrate layer 2 includes thin layer 21, adhesive layer 22 and the metal forming 23 that from top to bottom sets gradually, and on the thin layer 21, the one side that deviates from metal forming 23 sets up black shading insulating layer 1, and on the metal forming 23, the one side that deviates from thin layer 21 sets up black conductive pressure sensitive adhesive layer 3, and the one side that black conductive pressure sensitive adhesive layer 3 surfaces, deviates from metal forming 23 sets up from type membrane 4.
The thickness of the black shading insulating layer 1 is 2 um-10 um, preferably 3 um-8 um.
The black shading insulating layer 1 comprises a dye and a filler with a light extinction function, wherein the dye comprises aniline black and carbon black or a combination of two of aniline black and carbon black, the filler with the light extinction function comprises silica, calcium carbonate, talcum powder, aluminum stearate and calcium stearate or a combination of more of silica, preferably silica.
The black shading insulating layer 1 comprises the following components in percentage by mass:
2 to 12 percent of dye and 0.3 to 5 percent of filler with extinction function.
Preferably, the black light-shielding insulating layer 1 includes the following components by mass percent:
5 to 8 percent of dye and 0.5 to 2 percent of filler with extinction function.
The dye and the filler with the extinction function are uniformly dissolved and dispersed in a solvent such as ethyl acetate, toluene, butanone and the like, and then the mixture is coated on the film layer 21 of the substrate layer 2 and dried and cured to obtain the required black shading insulating layer 1.
The thickness of the adhesive layer 22 between the film layer 21 and the metal foil 23 is 2um to 10um, preferably 4um to 8 um.
The adhesive layer 22 includes the following components by mass: the polyester and the isocyanate have a mass ratio of 100: 1-100: 20, preferably 100: 4-100: 15, the polyester contains a hydroxyl structure, the hydroxyl content of the polyester is 1-100 mgKOH/g, preferably 2-50 mgKOH/g, and the isocyanate comprises compounds such as isophorone diisocyanate (IPDI), Toluene Diisocyanate (TDI), p-diphenylmethane diisocyanate (MDI), Hexamethylene Diisocyanate (HDI) and the like or a combination of one or more of the oligomers of the compounds.
The metal foil 23 is an aluminum foil, and has a thickness of 5um to 20um, preferably 7um to 15 um.
The thickness of the black conductive pressure-sensitive adhesive layer 3 is 10 um-60 um, preferably 20-40 um.
The black conductive pressure-sensitive adhesive layer 3 comprises black dyes, conductive particles and an acrylate polymer, wherein the mass ratio of the black dyes to the conductive particles to the acrylate polymer is (1-10): 5-40: 100, preferably 2-5: 10-30: 100, the black dye comprises aniline black and/or carbon black, the conductive particles are one or more of nickel powder, iron powder, copper powder, silver-coated copper powder, nickel-coated graphite powder and nickel-coated iron powder, and the preferred is nickel powder and nickel-coated graphite powder.
The D50 size measured by GB/T19077-2016 standard is the size measured by the laser particle size test method, and D50 means that 50% of the particles are smaller than the size. The ratio of the D50 size to the thickness of the black conductive pressure sensitive adhesive layer measured according to GB/T19077-2016 standard of the conductive particles in the black conductive pressure sensitive adhesive layer 3 is 0.3-2: 1, preferably 0.8-1.5: 1.
The preparation steps of the black conductive pressure-sensitive adhesive layer 3 are as follows:
the black dye, the conductive particles, and the acrylic polymer are uniformly dissolved and dispersed in a solvent (ethyl acetate, toluene, methyl ethyl ketone, or the like), and then coated on the lower surface of the metal foil 23, and the release film 4 is attached after drying the solvent and cured to obtain the conductive ink. The black dye, the conductive particles, and the acrylic polymer may be dissolved and dispersed in a solvent (ethyl acetate, toluene, methyl ethyl ketone, or the like), applied to the release film 4, dried, and then attached to the lower surface of the metal foil 23 of the base material layer 2 and cured.
The release force of the contact surface of the release film 4 and the black conductive pressure sensitive adhesive layer 3 is 3 to 50gf/in, preferably 5 to 10 gf/in.
The substrate layer 2 is tested according to a type III test sample in national standard GB/T13022-.
The shading type electromagnetic shielding adhesive tape has the following edge covering test performance: cutting the shading type electromagnetic shielding adhesive tape into a sample strip with the width of 10mm and the length of 150mm, tearing off the release film 4, immediately sticking the long side of the sample strip to the edge of the aluminum plate with the thickness of 2mm, enabling the sample strip to cover the edge of the surface of the aluminum plate by 1mm, and covering the thickness part of the aluminum plate and the back surface of the aluminum plate with the rest of the sample strip; after 20min at 23 ℃ and 50% humidity, the sample plate was placed at 60 ℃ and 90% humidity for 168h, and the sample plate and the aluminum plate were not separated by visual observation, as shown in FIG. 2.
The shading type electromagnetic shielding adhesive tape has the following conductive performance: the resistance of the black conductive pressure-sensitive adhesive surface of the light shielding type electromagnetic shielding tape after the release film 4 is torn off is tested according to the 4.5.11 part in the MIL-DTL-83528C standard, and the measured resistance R is not more than 0.5 omega.
Stick up the limit, but reworkability nature all is concerned with substrate layer 2 and black electrically conductive pressure sensitive adhesive layer 3, and thin layer 21 has certain resilience after buckling, for preventing sticking up the limit, thin layer 21 in the substrate layer 2 can not be too thick or too thin, and too thin then can make substrate layer 2's tensile strength too low, and the sticky tape breaks when leading to reworking, increases the reworking degree of difficulty, the utility model discloses the thickness of having confirmed thin layer 21 in the creative work is 4um ~ 20um, preferred 7um ~ 15um, and thickness is suitable, and tensile strength is big, is difficult for breaking during the reworking, improves reworkability nature.
In addition, in order to prevent edge lifting, the black conductive pressure-sensitive adhesive layer 3 must have good peeling force and holding force. To satisfy this, the first point is that the addition ratio of the black dye and the conductive particles cannot be too high, otherwise the peeling force and the holding force will be reduced, but the addition ratio is too low and the covering property and the conductivity will not be obtained; the second point is that the acrylate polymer in the black conductive pressure sensitive adhesive layer 3 has a proper polar group (hydroxyl or carboxyl) and a proper glass transition temperature, the glass transition temperature is low, the holding power of the adhesive layer can be reduced, the adhesive layer may remain on the liquid crystal module during heavy operation, the heavy operation is poor, the glass transition temperature is high, the holding power of the adhesive layer is high, but the peeling force can be correspondingly reduced, the utility model discloses pay creative work to determine that the glass transition temperature of the acrylate polymer in the black conductive pressure sensitive adhesive layer 3 is-60 ℃ -0 ℃, preferably-40 ℃ -20 ℃, and the problems of edge warping and poor heavy operation of the existing adhesive tape are well solved.
Example 1
As shown in fig. 1-2, a shading type electromagnetic shielding tape, includes black shading insulating layer 1, substrate layer 2, black electrically conductive pressure sensitive adhesive layer 3 and from type membrane 4 that from top to bottom set gradually, substrate layer 2 is including thin layer 21, adhesive layer 22 and the foil 23 that from top to bottom sets gradually, and thin layer 21 is polyester type film, and thickness is 7um-15 um.
The black shading insulating layer 1 comprises the following components in percentage by mass:
5 to 8 percent of dye
0.5-2% of filler with a delustering function.
The black shading insulating layer is obtained by uniformly dissolving and dispersing two components of dye and filler with the light extinction function in ethyl acetate, then coating the mixture on the film layer 21, and drying and curing the mixture.
The black conductive pressure-sensitive adhesive layer 3 is prepared from black dyes, conductive particles and an acrylate polymer, wherein the mass ratio of the black dyes to the conductive particles to the acrylate polymer is (2-5): 10-30: 100, wherein the molecular chain of the acrylate polymer contains polar groups, and the polar groups are hydroxyl groups. The glass transition temperature of the acrylate polymer is-40 ℃ to-20 ℃.
The black conductive pressure sensitive adhesive layer 3 is obtained by uniformly dissolving and dispersing black dye, conductive particles and an acrylic polymer in ethyl acetate, coating the mixture on the lower surface of the metal foil 23, drying the solvent, attaching the release film 4 to the dried mixture, and curing the dried mixture.
The part of the utility model which is not described in detail can be realized by adopting the prior art, and the description is not repeated here.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (7)
1. The utility model provides a shading type electromagnetic shield sticky tape, its characterized in that, includes black shading insulating layer (1), substrate layer (2), black electrically conductive pressure sensitive adhesive layer (3) that from top to bottom set gradually and leaves type membrane (4), substrate layer (2) include thin layer (21), adhesive layer (22) and foil (23) that from top to bottom set gradually, contain conductive particle in black electrically conductive pressure sensitive adhesive layer (3).
2. A light-shielding electromagnetic shielding tape according to claim 1, wherein the black light-shielding insulating layer (1) has a thickness of 2-10 um.
3. A light-shielding electromagnetic shielding tape according to claim 1, wherein the film layer (21) is a polyester film and has a thickness of 4-20 um.
4. A light-shielding type electromagnetic shielding tape according to claim 1, wherein the thickness of the adhesive layer (22) is 2 to 10 μm.
5. A light-shielding electromagnetic shielding tape according to claim 1, wherein the metal foil (23) is an aluminum foil and has a thickness of 5-20 μm.
6. A light-shielding electromagnetic shielding tape according to claim 1, wherein the thickness of the black conductive pressure-sensitive adhesive layer (3) is 10-60 um.
7. A light-shielding electromagnetic shielding tape according to claim 1, wherein the release film (4) is a polyester type release film having a thickness of 20 to 125 μm, and the release force of the contact surface of the release film (4) and the black conductive pressure-sensitive adhesive layer (3) is 3 to 50 gf/in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020554776.9U CN212246861U (en) | 2020-04-15 | 2020-04-15 | Shading type electromagnetic shielding adhesive tape |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020554776.9U CN212246861U (en) | 2020-04-15 | 2020-04-15 | Shading type electromagnetic shielding adhesive tape |
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| Publication Number | Publication Date |
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| CN212246861U true CN212246861U (en) | 2020-12-29 |
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| CN202020554776.9U Active CN212246861U (en) | 2020-04-15 | 2020-04-15 | Shading type electromagnetic shielding adhesive tape |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113278371A (en) * | 2021-05-19 | 2021-08-20 | 佳普电子新材料(连云港)有限公司 | Reworkable electromagnetic shielding double-sided tape with excellent stability and preparation method thereof |
| CN113637418A (en) * | 2021-08-23 | 2021-11-12 | 三千新材料(苏州)有限公司 | Electromagnetic shielding laser eavesdropping blocking two-in-one film and preparation method thereof |
| CN114634794A (en) * | 2022-03-01 | 2022-06-17 | 武汉华星光电技术有限公司 | Edge-covered tape, display device, and display device manufacturing method |
-
2020
- 2020-04-15 CN CN202020554776.9U patent/CN212246861U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113278371A (en) * | 2021-05-19 | 2021-08-20 | 佳普电子新材料(连云港)有限公司 | Reworkable electromagnetic shielding double-sided tape with excellent stability and preparation method thereof |
| CN113637418A (en) * | 2021-08-23 | 2021-11-12 | 三千新材料(苏州)有限公司 | Electromagnetic shielding laser eavesdropping blocking two-in-one film and preparation method thereof |
| CN114634794A (en) * | 2022-03-01 | 2022-06-17 | 武汉华星光电技术有限公司 | Edge-covered tape, display device, and display device manufacturing method |
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Address after: Building 3-301, 302, Zone 9, Industrial Fang-A, Science and Technology City, No. 189 Kunlun Mountain Road, High tech Zone, Suzhou City, Jiangsu Province, 215000 Patentee after: Suzhou Huanming New Material Technology Co.,Ltd. Address before: 215000 Building 9, No. 189, Kunlunshan Road, high tech Zone, Suzhou City, Jiangsu Province Patentee before: SUZHOU ENBRIGHTECH Co.,Ltd. |
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