CN105950054B - A kind of production method of electromagnetic shielding film - Google Patents
A kind of production method of electromagnetic shielding film Download PDFInfo
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- CN105950054B CN105950054B CN201610494331.4A CN201610494331A CN105950054B CN 105950054 B CN105950054 B CN 105950054B CN 201610494331 A CN201610494331 A CN 201610494331A CN 105950054 B CN105950054 B CN 105950054B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/02—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to macromolecular substances, e.g. rubber
- B05D7/04—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to macromolecular substances, e.g. rubber to surfaces of films or sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/56—Three layers or more
- B05D7/58—No clear coat specified
- B05D7/584—No clear coat specified at least some layers being let to dry, at least partially, before applying the next layer
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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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
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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
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
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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
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
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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
- C09J7/22—Plastics; Metallised plastics
- C09J7/25—Plastics; Metallised plastics based on macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2201/00—Polymeric substrate or laminate
- B05D2201/02—Polymeric substrate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2252/00—Sheets
- B05D2252/10—Applying the material on both sides
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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
- C09J2479/00—Presence of polyamine or polyimide
- C09J2479/08—Presence of polyamine or polyimide polyimide
- C09J2479/086—Presence of polyamine or polyimide polyimide in the substrate
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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
- C09J2481/00—Presence of sulfur containing polymers
- C09J2481/006—Presence of sulfur containing polymers in the substrate
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- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention discloses a kind of production methods of electromagnetic shielding film, comprising: unreels high-temperature flexible film by coating head on coating line, after the black glue for uniformly applying 2 μm~5um thickness, using oven by high-temperature flexible film surface drying；To the high-temperature flexible film of surface drying plating metal shielded layer under vacuum conditions；The conductive adhesive layer that 5 μm~8 μ m-thicks are used for electromagnetic wave absorption is applied to the side for being coated with metal screen layer painting；Conducting resinl is the mixture of the PU glue that weight ratio is 50~80 or epoxy glue, 5~10 conducting powder, 20~50 magnetic powder and solvent.The production method of the electromagnetic shielding film, can continuous high-efficient 10 μm~50 μ m-thick of production ultra-thin screened film, achieve over the shield effectiveness of 60db or more between 10MHZ~10GHZ, it is process stabilizing, easy to operate.
Description
Technical field
The present invention relates to electronic communication technology fields, more particularly to a kind of production method of electromagnetic shielding film.
Background technique
Some electromagnetic shielding materials for occurring in the market it is simple from metallic shield aspect, can effectively solve 10MHZ
To the signal shielding problem between 1GHZ, however, having arrived the electromagnetic wave signal of 1GHZ frequency or more, shield effectiveness is difficult to obtain
Shield effectiveness more than 60db or more limits products application range in this way.How a height in 1GHZ or more is developed
For frequency signal shielding ultra-thin materials to the ultrathins of the products such as mobile phone, miniaturized application seems especially urgent.
The shielding means in industry in solution high-frequency signal segment limit are not very mature at present, in the market Japan factory
The electromagnetic membrane product of offer can obtain good shield effectiveness, domestic some electromagnetic membrane factories in 10MHZ to 1GHZ range
The product that family provides can obtain some satisfied effects in 1GHZ or more, but stability is very poor, is unable to bear adverse circumstances
The repeated stock of condition and be easy to fail.
Summary of the invention
The object of the present invention is to provide a kind of production methods of electromagnetic shielding film, can effectively solve between 10MHZ to 10GHZ
Signal shielding problem, it is reliable and stable in use process, it is process stabilizing, easy to operate.
In order to solve the above technical problems, the embodiment of the invention provides a kind of production methods of electromagnetic shielding film, comprising:
High-temperature flexible film is unreeled on coating line by coating head, after the black glue for uniformly applying 2 μm~5um thickness, is made
With oven by the high-temperature flexible film surface drying；
To the high-temperature flexible film of surface drying plating metal shielded layer under vacuum conditions；
The conductive adhesive layer that 5 μm~8 μ m-thicks are used for electromagnetic wave absorption is applied to the side that the metal screen layer applies is coated with；
Wherein, the conducting resinl be PU glue that weight ratio is 50~80 or epoxy glue, 5~10 conducting powder, 20~50
The mixture of magnetic powder and solvent；The high-temperature flexible film is pps film or pi film, or using compounding machine that the pps is thin
Film and 80 μ m-thicks have the compound laminated film of sticking protective film, or are had the pi film and 80 μ m-thicks using compounding machine
The compound laminated film of protective film of viscosity, the high-temperature flexible film with a thickness of 10 μm~50 μm, width be 200mm~
1000mm, the viscosity of the black glue are 1000cps~5000cps.
Wherein, the conducting resinl is the PU glue or epoxy glue, 5 conducting powder, 30 magnetic powder and solvent that weight ratio is 50
Mixture.
It is wherein, described to use oven by the high-temperature flexible film surface drying, comprising:
Using the oven by the high-temperature flexible film surface drying at a temperature of 100 DEG C~200 DEG C.
Wherein, the black glue is that PU glue that weight ratio is 50~90 or epoxy glue, 1~3 curing agent and 100 solvent are matched
The black glue or weight ratio being set to be 70 EPON58006 glue, 1.2 curing agent and 100 the black glue that is configured to of solvent.
Wherein, further includes: PP protective film or pet protective film are covered on the conductive adhesive layer.
Wherein, further includes: after testing to the high-temperature flexible film for being covered with the PP protective film or pet protective film
It cuts.
The production method of electromagnetic shielding film provided by the embodiment of the present invention has the advantage that compared with prior art
The production method of electromagnetic shielding film provided in an embodiment of the present invention, comprising:
High-temperature flexible film is unreeled on coating line by coating head, after the black glue for uniformly applying 2 μm~5um thickness, is made
With oven by the high-temperature flexible film surface drying；
To the high-temperature flexible film of surface drying plating metal shielded layer under vacuum conditions；
The conductive adhesive layer that 5 μm~8 μ m-thicks are used for electromagnetic wave absorption is applied to the side that the metal screen layer applies is coated with；
PP protective film or pet protective film are covered on the conductive adhesive layer；
Wherein, the conducting resinl be PU glue that weight ratio is 50~80 or epoxy glue, 5~10 conducting powder, 20~50
The mixture of magnetic powder and solvent；The high-temperature flexible film is pps film or pi film, or using compounding machine that the pps is thin
Film and 80 μ m-thicks have the compound laminated film of sticking protective film, or are had the pi film and 80 μ m-thicks using compounding machine
The compound laminated film of protective film of viscosity, the high-temperature flexible film with a thickness of 10 μm~50 μm, width be 200mm~
1000mm, the viscosity of the black glue are 1000cps~5000cps.
It, can be with the ultra-thin shielding of 10 μm~50 μ m-thick of production of continuous high-efficient using the production method of the electromagnetic shielding film
Film is able to achieve the shield effectiveness more than 60db or more between 10MHZ~10GHZ, mentions and big improves flexible shielding material
Application range and added value, stability is reliable, process stabilizing, easy to operate.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
The step of Fig. 1 is a kind of specific embodiment of production method of electromagnetic shielding film provided by the embodiment of the present invention
Flow diagram.
Specific embodiment
Just as described in the background section, it is not in the shielding means solved in high-frequency signal segment limit in industry at present
Very mature, the electromagnetic membrane product that Japan factory provides in the market can obtain good shielding effect in 10MHZ to 1GHZ range
Fruit, the product that domestic some electromagnetic membrane producers provide can obtain some satisfied effects, but stability in 1GHZ or more
It is very poor, it is unable to bear the repeated stock of severe environmental conditions and is easy to fail.
Based on this, the embodiment of the invention provides a kind of production methods of electromagnetic shielding film, comprising:
High-temperature flexible film is unreeled on coating line by coating head, after the black glue for uniformly applying 2 μm~5um thickness, is made
With oven by the high-temperature flexible film surface drying；
To the high-temperature flexible film of surface drying plating metal shielded layer under vacuum conditions；
The conductive adhesive layer that 5 μm~8 μ m-thicks are used for electromagnetic wave absorption is applied to the side that the metal screen layer applies is coated with；
The conducting resinl be the PU glue that weight ratio is 50~80 or epoxy glue, 5~10 conducting powder, 20~50 magnetic powder and
The mixture of solvent；The high-temperature flexible film is pps film or pi film, or uses compounding machine by the pps film and 80
μ m-thick has the compound laminated film of sticking protective film, or using compounding machine that the pi film and 80 μ m-thicks tool is sticking
The compound laminated film of protective film, the high-temperature flexible film with a thickness of 10 μm~50 μm, width be 200mm~
1000mm, the viscosity of the black glue are 1000cps~5000cps.
In conclusion the production method of electromagnetic shielding film provided in an embodiment of the present invention, it can be with 10 μ of production of continuous high-efficient
The ultra-thin screened film of the μ m-thick of m~50 is able to achieve the shield effectiveness more than 60db or more between 10MHZ~10GHZ, mentions big
The application range and added value of flexible shielding material are improved, stability is reliable, process stabilizing, easy to operate.
To make the above purposes, features and advantages of the invention more obvious and understandable, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.
Detail is elaborated in the following description to fully understand the present invention.But the present invention can with it is a variety of not
Other way described herein is same as to implement, those skilled in the art can do class without violating the connotation of the present invention
Like popularization.Therefore the present invention is not limited to the specific embodiments disclosed below.
Referring to FIG. 1, Fig. 1 is a kind of specific implementation of production method of electromagnetic shielding film provided by the embodiment of the present invention
The step flow diagram of mode.
In a specific embodiment, the production method of the electromagnetic shielding film, comprising:
Step 1, high-temperature flexible film is unreeled on coating line by coating head, uniformly applies the black glue of 2 μm~5um thickness
Afterwards, using oven by the high-temperature flexible film surface drying；
Step 2, to the high-temperature flexible film of surface drying plating metal shielded layer under vacuum conditions；
Step 3, the conducting resinl that 5 μm~8 μ m-thicks are used for electromagnetic wave absorption is applied to the side for being coated with the metal screen layer painting
Layer；
The conducting resinl be the PU glue that weight ratio is 50~80 or epoxy glue, 5~10 conducting powder, 20~50 magnetic powder and
The mixture of solvent.
The production method of electromagnetic shielding film, can with the ultra-thin screened film of 10 μm~50 μ m-thick of production of continuous high-efficient,
It is able to achieve preferable shield effectiveness between 10MHZ~10GHZ, proposes the big application range for improving flexible shielding material and attached
Value added, stability is reliable, process stabilizing, easy to operate.
It, generally will be described resistance at a temperature of 100 DEG C~200 DEG C using the oven for the electromagnetic shielding film for obtaining high quality
High temperature fexible film surface drying.Here surface drying refers to dry tack free, this temperature range is selected in production one, is the temperature because of oven
When spending low, the time that surface drying needs is longer, so that the period of manufacture product becomes very long, in a disguised form increases many costs, and
Temperature is excessively high, it is possible to which the stability for influencing product, for the baking temperature of oven and oven, the present invention does not do specific limit
It is fixed.
High-temperature flexible film is generally pps film or pi film, and is the use scope for expanding electromagnetic shielding film, adapts to more
Add rugged environment, material film and protective film can generally be combined using compounding machine, i.e., the described high-temperature flexible film
More is that the pps film and 80 μ m-thicks are had the compound laminated film of sticking protective film or pps film using compounding machine
Has the compound laminated film of sticking protective film with pi film and 80 μ m-thicks.It should be noted that the present invention is to high-temperature flexible
Film and compounding machine are not specifically limited.
The general high-temperature flexible film with a thickness of 10 μm~50 μm, width is 200mm~1000mm.
Requirement for black glue is usually that viscosity is 1000cps~5000cps.
Specifically, black glue be usually configured with polyurethane or epoxy glue, black glue configuration be generally weight ratio be 50~
90 PU glue or epoxy glue, 1~3 curing agent and 100 the black glue that is configured to of solvent or weight ratio be 70 EPON58006
The black glue that glue, 1.2 curing agent and 100 solvent are configured to.
And the effect of conducting resinl is the absorption realized to electromagnetic wave in the present invention, to improve shielding properties.
Since electromagnetic shielding film is to shield electromagnetic wave by conductive adhesive layer, if naked leakage is outside, it is easy to it is damaged,
Electromagnetic shielding performance decline is in turn resulted in, electromagnetic shielding is reduced and does not obtain service life, therefore the production side of general electromagnetic shielding film
Method further include: PP protective film or pet protective film are covered on the conductive adhesive layer.
The size for the electromagnetic shielding film that the electromagnetic shielding film being fabricated to generally is used than physical device is larger, and for producing
Product need to carry out simple, therefore the production method of electromagnetic shielding film to shielding electromagnetic waves effect location further include: to being covered with
The high-temperature flexible film of the PP protective film or pet protective film is cut after testing.
The manufacturing step of the general electromagnetic shielding film is as follows:
11) raw material preparation:
111) high temperature resistance diaphragm: prepare with a thickness of 10 μm~50 μm of pps film or other high temperature resistants and there is some strength
Flexible thin-film material, breadth is between 200mm~1000mm, it is desirable that surface is clean, and neatly, even tension is consistent when unreeling.
112) black glue: black glue of the viscosity between 1000cps~5000cps is made into polyurethane or epoxy glue and is waited for
With.
12) raw material film applies black glue: ready pps film or high-temperature resistant membrane are unreeled on coating line by coating
Head is uniformly coated with the black glue of one layer of 2 μm~5 μ m-thick, after it can provide the oven between 100 DEG C to 200 °C for solvent surface drying,
It winds.
13) plating metal shielded layer under vacuum conditions；
14) one layer of conductive adhesive layer with electromagnetic wave absorption functions is applied；
15) upper one layer of pp or pet protective film is covered；
16) it tests, cuts to product, obtain finished product required for us.
10 μm~30 μ m thicks can be produced with continuous high-efficient in this way, be able to achieve between 10MHZ to 10GHZ and be more than
The ultra-thin shielded film of 60db or more shield effectiveness greatly improves the application range and added value of flexible shielding material.
Either electromagnetic shielding film is made using following methods:
21) raw material preparation:
211) high temperature resistance diaphragm: the pps film with a thickness of 2 μm~10 μm is bought from toray, breadth is dry for the surface 500mm
Only, even tension is consistent when neatly, unreeling.
212) black glue: black glue of the viscosity between 1000cps to 5000cps is made into polyurethane or epoxy glue and is waited for
With glue formula is with reference to following (by 100 parts of calculating):
PU glue or epoxy glue: 50~90；Curing agent: 1~3；Solvent: several.
It should be noted that the usage amount of solvent can obtain black glue of the viscosity between 1000cps to 5000cps
?.
22) pad pasting: the sticking protective film of tool of film and 30 μm~80um thickness is combined with each other with compounding machine.
23) raw material film applies black glue: compound good pps film or high-temperature resistant membrane are unreeled on coating line by coating
Head is uniformly coated with the dry film glue of one layer of 3 μm~10um thickness, by that can provide the oven between 100 DEG C~200 DEG C for solvent table
It is dry, it winds.
24) vacuum metallization shielded layer；
25) one layer of thick conductive adhesive layer with electromagnetic wave absorption functions of 8um is coated；
26) upper one layer of pp or pet protective film is covered；
27) it tests, cuts to product, obtain finished product required for us.
10 μm~50 μ m thicks can be produced with continuous high-efficient using this method, it can be real between 10MHZ to 10GHZ
Now more than the ultra-thin shielded film of 60db or more shield effectiveness, greatly improves the application range of flexible shielding material and add
Value.
Ultra-thin shielded film is designed by the formula to conductive adhesive layer, the absorption of electromagnetic wave can be effectively realized, to mention
High shielding properties.
Conductive adhesive layer is formulated following (weight):
PU glue/epoxy glue: 50~~80 parts；Conducting powder: 5~10 parts；Magnetic powder: 20~50 parts of solvents: enough.
The following are a specific embodiments:
31) raw material preparation:
311) high temperature resistance diaphragm: the pps film with a thickness of 5um is bought from toray, breadth is that the surface 500mm is clean, whole
Clean, even tension is consistent when unreeling.
312) black glue: it is stand-by that black glue of the viscosity between 3000cps is made into polyurethane or epoxy glue.Glue formula
With reference to following (calculating by weight):
EPON58006:70；Curing agent: 1.2；Solvent: 100
32) pad pasting: the sticking protective film of tool of pps film and 50um thickness is combined with each other with compounding machine.
33) raw material film applies black glue: compound good pps film or high-temperature resistant membrane are unreeled on coating line by coating
Head is uniformly coated with the black glue of one layer of 3um thickness, by that can provide the oven between 100 DEG C~200 DEG C for solvent surface drying, winds.
34) plating metal shielded layer under vacuum environment；
35) one layer of thick conductive adhesive layer with electromagnetic wave absorption functions of 5um is coated,
Conductive adhesive layer formula is as follows: HY-181 glue (unifies gluing Co., Ltd in Guangdong): 50 parts；Copper powder (the happy field in Beijing
Favour metal material Co., Ltd): 5 parts；Iron(-)base powder: 30 parts (Shanghai Mai Da company)；Solvent: enough.
36) upper one layer of pp or pet protective film is covered；
37) it tests, cuts to product, obtain finished product required for us.
Sheet resistance according to the ultra-thin shielded film of 13 μ m-thicks made of this technique is 0.023 Ω/in (ohm/English
It is very little), tensile strength 7.3N/cm.
In conclusion the production method of electromagnetic shielding film provided in an embodiment of the present invention, it can be with 10 μ of production of continuous high-efficient
The ultra-thin screened film of the μ m-thick of m~50 is able to achieve the shield effectiveness more than 60db or more between 10MHZ~10GHZ, mentions big
The application range and added value of flexible shielding material are improved, stability is reliable, process stabilizing, easy to operate.
The production method of electromagnetic shielding film provided by the present invention is described in detail above.Tool used herein
Principle and implementation of the present invention are described for body example, the above embodiments are only used to help understand this hair
Bright method and its core concept.It should be pointed out that for those skilled in the art, not departing from the present invention
, can be with several improvements and modifications are made to the present invention under the premise of principle, these improvement and modification also fall into right of the present invention
It is required that protection scope in.
Claims (6)
1. a kind of production method of electromagnetic shielding film characterized by comprising
High-temperature flexible film is unreeled on coating line by coating head, after the black glue for uniformly applying 2 μm~5um thickness, using roasting
Case is by the high-temperature flexible film surface drying；
To the high-temperature flexible film of surface drying plating metal shielded layer under vacuum conditions；
The conductive adhesive layer that 5 μm~8 μ m-thicks are used for electromagnetic wave absorption is applied to the side that the metal screen layer applies is coated with；
Wherein, the conducting resinl is the PU glue or epoxy glue, 5~10 conducting powder, 20~50 magnetic powder that weight ratio is 50~80
With the mixture of solvent；The high-temperature flexible film is pps film or pi film, or using compounding machine by the pps film and
80 μ m-thicks have the compound laminated film of sticking protective film, or the pi film and 80 μ m-thicks are had viscosity using compounding machine
The compound laminated film of protective film, the high-temperature flexible film with a thickness of 10 μm~50 μm, width be 200mm~
1000mm, the viscosity of the black glue are 1000cps~5000cps.
2. the production method of electromagnetic shielding film as described in claim 1, which is characterized in that the conducting resinl is that weight ratio is 50
PU glue or epoxy glue, 5 conducting powder, 30 magnetic powder and solvent mixture.
3. the production method of electromagnetic shielding film as claimed in claim 1 or 2, which is characterized in that described to use oven described
High-temperature flexible film surface drying, comprising:
Using the oven by the high-temperature flexible film surface drying at a temperature of 100 DEG C~200 DEG C.
4. the production method of electromagnetic shielding film as described in claim 1, which is characterized in that the black glue be weight ratio be 50~
90 PU glue or epoxy glue, 1~3 curing agent and 100 the black glue that is configured to of solvent or weight ratio be 70 EPON58006
The black glue that glue, 1.2 curing agent and 100 solvent are configured to.
5. the production method of electromagnetic shielding film as claimed in claim 4, which is characterized in that further include: in the conductive adhesive layer
Upper covering PP protective film or pet protective film.
6. the production method of electromagnetic shielding film as claimed in claim 5, which is characterized in that further include: to being covered with the PP
The high-temperature flexible film of protective film or pet protective film is cut after testing.
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| CN107353777A (en) * | 2017-08-16 | 2017-11-17 | 苏州城邦达力材料科技有限公司 | It is electromagnetically shielded the preparation method of membrane coat and electromagnetic shielding film |
| CN107592783A (en) | 2017-09-15 | 2018-01-16 | 中山国安火炬科技发展有限公司 | A kind of electromagnetic shielding film and preparation method thereof |
| CN109251709A (en) * | 2018-08-28 | 2019-01-22 | 善仁（浙江）新材料科技有限公司 | It is a kind of can room temperature storage middle low-temperature cured conductive glue and preparation method thereof |
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| JPS54121046A (en) * | 1978-03-13 | 1979-09-19 | Tdk Corp | Electric wave absorbing material |
| CN101050307A (en) * | 2007-04-24 | 2007-10-10 | 上海材料研究所 | Current conducting silicon rubber with capability of electromagnetic shielding, and fabricating method |
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| CN104507301A (en) * | 2014-12-16 | 2015-04-08 | 苏州城邦达力材料科技有限公司 | Electromagnetic shielding film with metal coating and manufacturing technique of electromagnetic shielding film |
| CN105315613A (en) * | 2014-05-27 | 2016-02-10 | 深圳光启创新技术有限公司 | Material for preparing wave absorbing membrane, wave absorbing membrane and wave absorbing membrane preparation method |
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| JPS54121046A (en) * | 1978-03-13 | 1979-09-19 | Tdk Corp | Electric wave absorbing material |
| CN101050307A (en) * | 2007-04-24 | 2007-10-10 | 上海材料研究所 | Current conducting silicon rubber with capability of electromagnetic shielding, and fabricating method |
| CN103619154A (en) * | 2013-12-09 | 2014-03-05 | 保定乐凯新材料股份有限公司 | Electromagnetic protection film with efficient shielding and electromagnetism absorption function |
| CN105315613A (en) * | 2014-05-27 | 2016-02-10 | 深圳光启创新技术有限公司 | Material for preparing wave absorbing membrane, wave absorbing membrane and wave absorbing membrane preparation method |
| CN104507301A (en) * | 2014-12-16 | 2015-04-08 | 苏州城邦达力材料科技有限公司 | Electromagnetic shielding film with metal coating and manufacturing technique of electromagnetic shielding film |
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| CN105950054A (en) | 2016-09-21 |
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