CN218910221U - Edge-covered attached multifunctional composite film and computer motherboard - Google Patents
Edge-covered attached multifunctional composite film and computer motherboard Download PDFInfo
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- CN218910221U CN218910221U CN202223063872.1U CN202223063872U CN218910221U CN 218910221 U CN218910221 U CN 218910221U CN 202223063872 U CN202223063872 U CN 202223063872U CN 218910221 U CN218910221 U CN 218910221U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model discloses a covered edge attached type multifunctional composite film and a computer motherboard. The utility model has six layers of film structures, the functions of the layers are different, the functions of the composite film are more diversified, the antistatic release film has excellent antistatic performance, namely, the PET film can be torn immediately, the PET film has better insulating effect, the first conductive adhesive layer, the second conductive adhesive layer and the side conductive adhesive layer have better conductive and adhesive effects, the aluminum foil layer has better conductive, radiating and shielding effects, the second conductive adhesive layer is not contacted with the side conductive adhesive layer, the two adjacent side conductive adhesive layers are not contacted, the purpose of edge covering and attaching is realized, the adaptation degree of the composite film and a computer motherboard is high, and the composite film is more suitable for being used in the computer motherboard.
Description
Technical Field
The utility model belongs to the technical field of composite films, and particularly relates to a multifunctional composite film with a binding and attaching function and a computer motherboard.
Background
With the rapid development of information technology and computer technology, computers have become an indispensable tool for modern offices and an effective information transmission carrier. The computer main board is one of the most basic and important parts of the computer, and is integrated with the main circuit system of the computer, and the computer main board is usually attached with a protective film structure, so that the computer main board is protected from being damaged by the external environment, and the heat generated in the using process is transferred out, thereby avoiding the dead halt of the computer or the burning of the circuit. However, the existing protective film structure has single function, mainly plays a role in heat dissipation, and has a degree of adaptation with a computer motherboard to be further improved, so that the edge covering film cannot be realized.
Disclosure of Invention
In order to solve the technical problems in the prior art, the utility model aims to provide an edge-covering attached multifunctional composite film and a computer motherboard.
In order to achieve the above purpose and achieve the above technical effects, the utility model adopts the following technical scheme:
the utility model provides an attached multi-functional complex film of borduring, includes looks adaptation and from last antistatic release film, PET membrane, first conductive adhesive layer, aluminium foil layer, conductive adhesive structural layer and the primer layer that sets gradually down, the conductive adhesive structural layer in primer includes second conductive adhesive layer and along the conductive adhesive layer in a plurality of limit that sets up around the second conductive adhesive layer, and the second conductive adhesive layer is adhered to on the primer layer respectively with the one side of limit conductive adhesive layer towards the primer layer, does not contact each other between second conductive adhesive layer and the limit conductive adhesive layer, does not contact each other between two adjacent limit conductive adhesive layers, and the second conductive adhesive layer all has the viscosity with the one side of limit conductive adhesive layer dorsad primer layer.
Further, the size of antistatic type membrane is greater than the size of PET membrane, first electrically conductive glue film, aluminium foil layer, electrically conductive glue structure layer and primer layer, the structure, the size of PET membrane and first electrically conductive glue film are the same and the size of both is less than the size of aluminium foil layer, the size of aluminium foil layer is the same with the size of second electrically conductive glue film, primer layer's size is in order to cover second electrically conductive glue film and limit electrically conductive glue film completely.
Further, the antistatic ionization type film has a peeling force of 60-100g/25mm, a residual adhesion rate of not less than 85%, and an antistatic index of 10 5 -10 9 Ω。
Further, the thickness of the PET film is 50-300 mu m, and the power frequency electric strength is not less than 70V/mu m.
Furthermore, the two opposite surfaces of the first conductive adhesive layer, the second conductive adhesive layer and the side conductive adhesive layer are sticky, the thickness is 50 mu m, and the resistance is 0.05 omega.
Further, the thickness of the aluminum foil layer is 0.1+/-0.01 mm, the shielding effectiveness is more than 60dB, the direct current resistance is less than 0.05ohms/M, and the heat conductivity coefficient is 180-240W/mK.
Furthermore, the back surface of the primer layer is not sticky to one surface of the conductive adhesive structure layer, and the thickness of the primer layer is 15-40 mu m.
Further, the four corners of the primer layer are respectively provided with a notch, the peripheral edges of the primer layer are respectively provided with an edge conductive adhesive layer, and a gap formed between two adjacent edge conductive adhesive layers is matched with the notch.
Furthermore, diagonal edges are symmetrically arranged on the PET film and the first conductive adhesive layer along one diagonal direction respectively.
The utility model also discloses a computer motherboard, which comprises the edge-covered attached multifunctional composite film.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model discloses a covered edge attached type multifunctional composite film and a computer motherboard, wherein the composite film comprises an antistatic release film, a PET film, a first conductive adhesive layer, an aluminum foil layer, a conductive adhesive structural layer and a bottom adhesive layer which are matched and sequentially arranged from top to bottom, the bottom conductive adhesive structural layer comprises a second conductive adhesive layer and a plurality of edge conductive adhesive layers which are arranged along the periphery of the second conductive adhesive layer, one surfaces of the second conductive adhesive layer and the edge conductive adhesive layer, which face the bottom adhesive layer, are respectively adhered to the bottom adhesive layer, the second conductive adhesive layer is not contacted with the edge conductive adhesive layer, two adjacent edge conductive adhesive layers are not contacted with each other, and one surfaces of the second conductive adhesive layer and the edge conductive adhesive layer, which face away from the bottom adhesive layer, are sticky. According to the edge-covered attached type multifunctional composite film and the computer motherboard, six layers of film structures are arranged in total, functions of all layers are different, functions of the composite film are diversified, all layers are well combined and are not easy to fall off, the antistatic property of the antistatic ionization type film is excellent, the composite film is torn immediately after being used, time and efficiency are improved, the PET film has good insulation effect, the two opposite sides of the first conductive adhesive layer and the second conductive adhesive layer are sticky, good conduction and adhesion effects can be achieved, the PET film, the first conductive adhesive layer, the aluminum foil layer, the second conductive adhesive layer and the primer layer are connected together more easily, the aluminum foil layer mainly has good conduction, heat dissipation and shielding effects, the second conductive adhesive layer and the edge conductive adhesive layer are arranged, the second conductive adhesive layer and the edge conductive adhesive layer are not contacted mutually, the adjacent two edge conductive adhesive layers are not contacted mutually, the edge-covered attached use is achieved, and the composite film and the computer motherboard is more suitable for edge-covered attachment.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
fig. 2 is an exploded view of the present utility model.
Detailed Description
The present utility model is described in detail below so that advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making clear and unambiguous the scope of the present utility model.
The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.
As shown in fig. 1-2, an edge-covering attached type multifunctional composite film comprises an antistatic release film 1, a PET film 2, a first conductive adhesive layer 3, an aluminum foil layer 4, a conductive adhesive structural layer 5 and a primer layer 6 which are sequentially arranged from top to bottom, wherein the primer layer 5 comprises a second conductive adhesive layer 7 and four edge conductive adhesive layers 8 which are arranged along the periphery of the second conductive adhesive layer 7, the adhesive layers 6 mainly play roles of insulation, adhesion and the like, one surface of the primer layer 6 facing the conductive adhesive structural layer 5 is sticky, one surface of the primer layer 6 facing away from the conductive adhesive structural layer 5 is non-sticky, good glossiness is achieved, one surfaces (namely the lower surfaces) of the second conductive adhesive layer 7 and the edge conductive adhesive layer 8 are respectively adhered to the primer layer 6, a certain distance exists between the second conductive adhesive layer 7 and the edge conductive adhesive layer 8, the second conductive adhesive layer 7 and one surfaces of the edge conductive adhesive layers 8 are sticky, the adhesive layers 4 are sticky through the second conductive adhesive layers 7, and the first conductive adhesive layers 3 and the aluminum foil layers 4 are connected together, and the first conductive adhesive layers 4 and the second conductive adhesive layers 6 are sticky.
The antistatic release film 1 is of ASNW-50T100W type, preferably white in color, is prepared by taking a PET substrate as a base, respectively coating an antistatic agent and a release agent on two opposite sides of the PET substrate, and has a peel force of 60-100g/25mm tested on a 5000g range tensile machine by using a Desha 7475 (new edition) test adhesive tape under the conditions of a peel angle of 180 DEG and a peel speed of 300mm/min, a residual adhesion rate of not less than 85% tested on a 5000g range tensile machine by using a Nidong 31B test adhesive tape under the conditions of an aging temperature of 70 ℃ and an aging time of 20h, and an antistatic index of 10 5 -10 9 Omega, the antistatic performance is excellent, the tearing is realized when the adhesive is used, and the time and the efficiency are saved. The thickness of the antistatic release film 1 is preferably 0.05mm. The antistatic release film 1 has a size larger than that of the PET film 2, the first conductive adhesive layer 3, the aluminum foil layer 4, the conductive adhesive structural layer 5 andthe primer layer 6 is sized to completely cover the PET film 2, the first conductive adhesive layer 3, the aluminum foil layer 4, the conductive adhesive structural layer 5, and the primer layer 6.
The PET film 2 is a D250 black polyester film, mainly plays an insulating role, is prepared from polyethylene terephthalate (PET) and special master batch through melt casting and biaxial orientation stretching, is suitable for the fields of adhesive tapes, electric insulation, musical instrument manufacturing and the like, has a black color, the thickness of the PET film 2 is 50-300 mu m, the industrial frequency electric strength according to GB/T13542.2-2009 test is not less than 70V/mu m, the tensile strength according to GB/T13542.2-2009 test is not less than 160MPa, the elongation at break is not less than 100MPa, and the infiltration tension according to GB/T13542.2-2009 test is 54mN/m.
The first conductive adhesive layer 3, the second conductive adhesive layer 7 and the side conductive adhesive layer 8 are respectively 3M9701-50 in type, and two opposite surfaces of the first conductive adhesive layer 3, the second conductive adhesive layer 7 and the side conductive adhesive layer 8 are respectively sticky, and mainly have the effects of conduction and adhesion, the thickness is preferably 50 mu M, and the resistance is preferably 0.05 omega.
The aluminum foil layer 4 adopts XPH11001 aluminum foil, the thickness is 0.1 plus or minus 0.01mm, the tensile strength is more than 55MPa, the shielding effectiveness is more than 60dB, the direct current resistance is less than 0.05ohms/M, and the heat conductivity coefficient is 180-240W/mK. The aluminum foil layer 4 has good conducting, radiating and shielding effects, light weight and easy processing.
The primer layer 6 is preferably a Mylar adhesive tape, the model is FTBFAP-15C, is an acrylic adhesive tape which adopts PET as a base material and is matt black on one side, adopts ultrathin design, has the thickness of 15-40 mu m, has the adhesive force of more than 500g/25mm, has good adhesive property, and has the L/a/b value of: 22.5.+ -. 2.5/0.0.+ -. 1.0/-1.0.+ -. 1.0, GU value 1.+ -. 1.
The four corners of the primer layer 6 are respectively provided with notches 9, the peripheral edges of the primer layer 6 are respectively provided with one side conductive adhesive layer 8, the two adjacent side conductive adhesive layers 8 are not contacted, a gap formed between the two side conductive adhesive layers 8 is matched with the notches 9, the post-edge wrapping attachment is facilitated, the size of the primer layer 6 is used for completely covering the second conductive adhesive layer 7 and the side conductive adhesive layers 8, the second conductive adhesive layer 7 is positioned at the central position of the conductive adhesive structural layer 5, the size of the second conductive adhesive layer 7 is identical to the size of the aluminum foil layer 4 and is matched with the two, the structure of the PET film 2 and the first conductive adhesive layer 3, the size of the PET film is identical to the size of the aluminum foil layer 4, and the diagonal directions of the PET film 2 and the first conductive adhesive layer 3 are symmetrically provided with diagonal edges 10.
The utility model also discloses a computer motherboard, which comprises the edge-covered attached multifunctional composite film.
Example 1
As shown in fig. 1-2, an adhesive-covered multifunctional composite film comprises an antistatic release film 1, a PET film 2, a first conductive adhesive layer 3, an aluminum foil layer 4, a conductive adhesive structural layer 5 and a primer layer 6 which are sequentially arranged from top to bottom, wherein the primer layer 5 comprises a second conductive adhesive layer 7 and four side conductive adhesive layers 8 which are arranged along the periphery of the second conductive adhesive layer 7, the adhesive layers 6 mainly play roles of insulation, adhesion and the like, one side of the primer layer 6 facing the conductive adhesive structural layer 5 is sticky, one side of the primer layer 6 facing away from the conductive adhesive structural layer 5 is non-sticky, the good glossiness is achieved, one sides (namely the lower surface) of the second conductive adhesive layer 7 and the side conductive adhesive layer 8 are respectively adhered to the primer layer 6, a certain distance exists between the second conductive adhesive layer 7 and the side conductive adhesive layer 8, the second conductive adhesive layer 7 and the side conductive adhesive layer 8 are not contacted, the adhesive-covered adhesive is conveniently realized in the later stage, one side (namely the upper surface) of the side of the primer layer 6 facing away from the conductive adhesive layer 7 is sticky, the first conductive adhesive layer 4 and the first conductive adhesive layer 3 and the aluminum foil layer 4 are connected together through the second conductive adhesive layer 7 and the first conductive adhesive layer 4 and the PET layer 4.
The antistatic release film 1 is of ASNW-50T100W type, preferably white in color, is prepared by taking a PET substrate as a base, respectively coating an antistatic agent and a release agent on two opposite sides of the PET substrate, wherein under the conditions of 180 degrees of peeling angle and 300mm/min of peeling speed, the peeling force of a test adhesive tape on a 5000g range tensile machine is 100g/25mm, the residual adhesion rate of a test adhesive tape on a 5000g range tensile machine is not less than 85% under the conditions of an aging temperature of 70 ℃ and an aging time of 20h, and the antistatic release film 1 has an antistatic index of 10 9 Omega, the antistatic performance is excellent, the tearing is realized when the adhesive is used, and the time and the efficiency are saved. The thickness of the antistatic release film 1 was 0.05mm. Antistatic ionization film1 is larger than the dimensions of the PET film 2, the first conductive adhesive layer 3, the aluminum foil layer 4, the conductive adhesive structural layer 5 and the primer layer 6, and can completely cover the PET film 2, the first conductive adhesive layer 3, the aluminum foil layer 4, the conductive adhesive structural layer 5 and the primer layer 6.
The PET film 2 is a D250 black polyester film, mainly plays an insulating role, is prepared from polyethylene terephthalate (PET) and special master batch through melt casting and biaxial orientation stretching, is suitable for the fields of adhesive tapes, electric insulation, musical instrument manufacturing and the like, has a black color, the thickness of the PET film 2 is 300 mu m, the industrial frequency electric strength according to GB/T13542.2-2009 test is not less than 70V/mu m, the tensile strength according to GB/T13542.2-2009 test is not less than 160MPa, the elongation at break is not less than 100MPa, and the infiltration tension according to GB/T13542.2-2009 test is 54mN/m.
The first conductive adhesive layer 3, the second conductive adhesive layer 7 and the side conductive adhesive layer 8 are respectively 3M9701-50 in type, and two opposite surfaces of the first conductive adhesive layer 3, the second conductive adhesive layer 7 and the side conductive adhesive layer 8 are respectively sticky, so that the conductive and adhesive effects are mainly achieved, the thicknesses of the first conductive adhesive layer 3, the second conductive adhesive layer 7 and the side conductive adhesive layer 8 are respectively 50 mu M, and the resistances of the first conductive adhesive layer, the second conductive adhesive layer and the side conductive adhesive layer are respectively 0.05 omega.
The aluminum foil layer 4 adopts XPH11001 aluminum foil, the thickness is 0.1mm, the tensile strength is more than 55MPa, the shielding effectiveness is more than 60dB, the direct current resistance is less than 0.05ohms/M, and the heat conductivity coefficient is 180-240W/mK. The aluminum foil layer 4 has good conducting, radiating and shielding effects, light weight and easy processing.
The primer layer 6 is preferably a Mylar adhesive tape, the model is FTBFAP-15C, is an acrylic adhesive tape which adopts PET as a base material and is matt black on one side, adopts ultrathin design, has the thickness of 40 mu m, has the adhesive force of more than 500g/25mm, has good adhesive property, and has the L/a/b value of: 22.5.+ -. 2.5/0.0.+ -. 1.0/-1.0.+ -. 1.0, GU value 1.
The four corners of the primer layer 6 are respectively provided with notches 9, the peripheral edges of the primer layer 6 are respectively provided with one side conductive adhesive layer 8, the two adjacent side conductive adhesive layers 8 are not contacted, a gap formed between the two side conductive adhesive layers 8 is matched with the notches 9, the post-edge wrapping attachment is facilitated, the size of the primer layer 6 is used for completely covering the second conductive adhesive layer 7 and the side conductive adhesive layers 8, the second conductive adhesive layer 7 is positioned at the central position of the conductive adhesive structural layer 5, the size of the second conductive adhesive layer 7 is identical to the size of the aluminum foil layer 4 and is matched with the two, the structure of the PET film 2 and the first conductive adhesive layer 3, the size of the PET film is identical to the size of the aluminum foil layer 4, and the diagonal directions of the PET film 2 and the first conductive adhesive layer 3 are symmetrically provided with diagonal edges 10.
The embodiment also discloses a computer motherboard, which comprises the edge-covered attached multifunctional composite film.
Example 2
As shown in fig. 1-2, an adhesive-covered multifunctional composite film comprises an antistatic release film 1, a PET film 2, a first conductive adhesive layer 3, an aluminum foil layer 4, a conductive adhesive structural layer 5 and a primer layer 6 which are sequentially arranged from top to bottom, wherein the primer layer 5 comprises a second conductive adhesive layer 7 and four side conductive adhesive layers 8 which are arranged along the periphery of the second conductive adhesive layer 7, the adhesive layers 6 mainly play roles of insulation, adhesion and the like, one side of the primer layer 6 facing the conductive adhesive structural layer 5 is sticky, one side of the primer layer 6 facing away from the conductive adhesive structural layer 5 is non-sticky, the good glossiness is achieved, one sides (namely the lower surface) of the second conductive adhesive layer 7 and the side conductive adhesive layer 8 are respectively adhered to the primer layer 6, a certain distance exists between the second conductive adhesive layer 7 and the side conductive adhesive layer 8, the second conductive adhesive layer 7 and the side conductive adhesive layer 8 are not contacted, the adhesive-covered adhesive is conveniently realized in the later stage, one side (namely the upper surface) of the side of the primer layer 6 facing away from the conductive adhesive layer 7 is sticky, the first conductive adhesive layer 4 and the first conductive adhesive layer 3 and the aluminum foil layer 4 are connected together through the second conductive adhesive layer 7 and the first conductive adhesive layer 4 and the PET layer 4.
The antistatic release film 1 is ASNW-50T100W, is preferably white in color, is prepared by taking a PET substrate as a base, respectively coating an antistatic agent and a release agent on two opposite sides of the PET substrate, has a peeling force of 80g/25mm on a 5000g range tensile machine under the conditions of a peeling angle of 180 DEG and a peeling speed of 300mm/min by using a Desa 7475 (new edition) test adhesive tape, has a residual adhesion rate of 90% on the 5000g range tensile machine under the conditions of an aging temperature of 70 ℃ and an aging time of 20h by using a Nidong 31B test adhesive tape, and has an antistatic index of 10 6 Omega, excellent antistatic performance, instant tearing and savingAnd is efficient. The thickness of the antistatic release film 1 was 0.05mm. The antistatic release film 1 has a size larger than that of the PET film 2, the first conductive adhesive layer 3, the aluminum foil layer 4, the conductive adhesive structural layer 5 and the primer layer 6, and can completely cover the PET film 2, the first conductive adhesive layer 3, the aluminum foil layer 4, the conductive adhesive structural layer 5 and the primer layer 6.
The PET film 2 is a D250 black polyester film, mainly plays an insulating role, is prepared from polyethylene terephthalate (PET) and special master batch through melt casting and biaxial orientation stretching, is suitable for the fields of adhesive tapes, electric insulation, musical instrument manufacturing and the like, has a black color, the thickness of the PET film 2 is 50 mu m, the industrial frequency electric strength according to GB/T13542.2-2009 test is not less than 70V/mu m, the tensile strength according to GB/T13542.2-2009 test is not less than 160MPa, the elongation at break is not less than 100MPa, and the infiltration tension according to GB/T13542.2-2009 test is 54mN/m.
The first conductive adhesive layer 3, the second conductive adhesive layer 7 and the side conductive adhesive layer 8 are respectively 3M9701-50 in type, and two opposite surfaces of the first conductive adhesive layer 3, the second conductive adhesive layer 7 and the side conductive adhesive layer 8 are respectively sticky, and mainly have the effects of conduction and adhesion, wherein the thickness of the first conductive adhesive layer 3, the second conductive adhesive layer 7 and the side conductive adhesive layer 8 is 50 mu M, and the resistance of the first conductive adhesive layer, the second conductive adhesive layer and the side conductive adhesive layer is 0.05 omega.
The aluminum foil layer 4 adopts XPH11001 aluminum foil, the thickness is 0.1mm, the tensile strength is more than 55MPa, the shielding effectiveness is more than 60dB, the direct current resistance is less than 0.05ohms/M, and the heat conductivity coefficient is 180-240W/mK. The aluminum foil layer 4 has good conducting, radiating and shielding effects, light weight and easy processing.
The primer layer 6 is preferably a Mylar adhesive tape, the model is FTBFAP-15C, is an acrylic adhesive tape which adopts PET as a base material and is matt black on one side, adopts ultrathin design, has the thickness of 15 mu m, has the adhesive force of more than 500g/25mm, has good adhesive property, and has the L/a/b value of: 22.5.+ -. 2.5/0.0.+ -. 1.0/-1.0.+ -. 1.0, GU value 1.
The four corners of the primer layer 6 are respectively provided with notches 9, the peripheral edges of the primer layer 6 are respectively provided with one side conductive adhesive layer 8, the two adjacent side conductive adhesive layers 8 are not contacted, a gap formed between the two side conductive adhesive layers 8 is matched with the notches 9, the post-edge wrapping attachment is facilitated, the size of the primer layer 6 is used for completely covering the second conductive adhesive layer 7 and the side conductive adhesive layers 8, the second conductive adhesive layer 7 is positioned at the central position of the conductive adhesive structural layer 5, the size of the second conductive adhesive layer 7 is identical to the size of the aluminum foil layer 4 and is matched with the two, the structure of the PET film 2 and the first conductive adhesive layer 3, the size of the PET film is identical to the size of the aluminum foil layer 4, and the diagonal directions of the PET film 2 and the first conductive adhesive layer 3 are symmetrically provided with diagonal edges 10.
Example 1 was followed.
Parts or structures of the present utility model, which are not specifically described, may be existing technologies or existing products, and are not described herein.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related arts are included in the scope of the present utility model.
Claims (10)
1. The utility model provides an attached multi-functional complex film of borduring, its characterized in that, including looks adaptation and from last antistatic release film, PET membrane, first conductive adhesive layer, aluminium foil layer, conductive adhesive structural layer and the primer layer that sets gradually down, conductive adhesive structural layer includes second conductive adhesive layer and along the conductive adhesive layer of a plurality of limit that sets up around the second conductive adhesive layer, does not contact each other between second conductive adhesive layer and the limit conductive adhesive layer, does not contact each other between two adjacent limit conductive adhesive layers, and second conductive adhesive layer all has the viscosity with the one side of limit conductive adhesive layer dorsad primer layer.
2. The multifunctional composite film with the attached edge covering function according to claim 1, wherein the size of the antistatic ionization type film is larger than the sizes of a PET film, a first conductive adhesive layer, an aluminum foil layer, a conductive adhesive structural layer and a primer layer, the sizes of the PET film and the first conductive adhesive layer are the same, the sizes of the PET film and the first conductive adhesive layer are both smaller than the sizes of the aluminum foil layer, the sizes of the aluminum foil layer and the second conductive adhesive layer are the same, and the size of the primer layer is in order of being capable of completely covering the second conductive adhesive layer and the edge conductive adhesive layer.
3. According to claim 1 or 2The multifunctional composite film is characterized in that the stripping force of the antistatic ionization type film is 60-100g/25mm, the residual adhesion rate is not less than 85%, and the antistatic index is 10 5 -10 9 Ω。
4. The multifunctional composite film with edge covering and attaching function according to claim 1 or 2, wherein the thickness of the PET film is 50-300 μm, and the power frequency electrical strength is not less than 70V/μm.
5. The multifunctional composite film according to claim 1 or 2, wherein the first conductive adhesive layer, the second conductive adhesive layer and the edge conductive adhesive layer have adhesive properties on opposite sides, a thickness of 50 μm and a resistance of 0.05 Ω.
6. The multifunctional composite film with edge covering and attaching function according to claim 1 or 2, wherein the thickness of the aluminum foil layer is 0.1+/-0.01 mm, the shielding effectiveness is more than 60dB, the direct current resistance is less than 0.05ohms/M, and the heat conductivity coefficient is 180-240W/mK.
7. The multifunctional composite film with edge covering and attaching function according to claim 1 or 2, wherein one surface of the primer layer, which is opposite to the conductive adhesive structure layer, is non-adhesive, and the thickness of the primer layer is 15-40 μm.
8. The multifunctional composite film with attached edges according to claim 1 or 2, wherein notches are respectively arranged at four corners of the primer layer, an edge conductive adhesive layer is respectively arranged at the peripheral edges of the primer layer, and a gap formed between two adjacent edge conductive adhesive layers is matched with the notch.
9. The multifunctional composite film with edge covering and attaching as defined in claim 1 or 2, wherein oblique edges are symmetrically arranged on the PET film and the first conductive adhesive layer along one diagonal direction respectively.
10. A computer motherboard comprising a multifunctional composite film of the type described in any one of claims 1-9.
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| CN202223063872.1U CN218910221U (en) | 2022-11-18 | 2022-11-18 | Edge-covered attached multifunctional composite film and computer motherboard |
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| CN202223063872.1U CN218910221U (en) | 2022-11-18 | 2022-11-18 | Edge-covered attached multifunctional composite film and computer motherboard |
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