CN114222421A - Circuit board printing method for preventing carbon oil leakage short circuit - Google Patents
Circuit board printing method for preventing carbon oil leakage short circuit Download PDFInfo
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- CN114222421A CN114222421A CN202111611404.0A CN202111611404A CN114222421A CN 114222421 A CN114222421 A CN 114222421A CN 202111611404 A CN202111611404 A CN 202111611404A CN 114222421 A CN114222421 A CN 114222421A
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- printing
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- oil
- screen printing
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/09—Use of materials for the conductive, e.g. metallic pattern
- H05K1/092—Dispersed materials, e.g. conductive pastes or inks
- H05K1/095—Dispersed materials, e.g. conductive pastes or inks for polymer thick films, i.e. having a permanent organic polymeric binder
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/10—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
- H05K3/12—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns
- H05K3/1216—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns by screen printing or stencil printing
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Manufacturing Of Printed Wiring (AREA)
Abstract
The invention relates to the technical field of circuit boards, and discloses a circuit board printing method for preventing carbon oil from leaking oil and short circuits. According to the circuit board printing method for preventing the carbon oil leakage short circuit, the carbon printing ink is selected as a main component through the carbon conductive printing ink, the shape of carbon printing ink particles is similar to spherical colloid particles, the carbon content of the graphitized carbon printing ink is high, the electronegativity is low, the conductivity is high, the surface area of the particles is large, and the produced adsorption effect is strong; the screen printing speed that the screen printing must control solder mask, insulating layer and conducting layer slows down the printing rhythm for the coating is even and fine and close, still should notice the screen printing direction and the wire is walked the line, should select the swap screen printing of 180 orientations in order to distinguish two layers of insulating layer screen printing, so that the isolation layer is flat and fine and close, thereby has reached the effect that prevents the short circuit of carbon oil seepage.
Description
Technical Field
The invention relates to the technical field of circuit boards, in particular to a circuit board printing method for preventing carbon oil from oil seepage and short circuit.
Background
The printed circuit board is made by adopting electronic printing technology, before the printed circuit board appears, the interconnection between electronic components is formed into complete circuit by means of direct connection of electric wire, and in order to simplify the production of electronic machine, reduce the wiring between electronic components and reduce production cost, the method of printing instead of wiring is started, the circuit pattern is printed on the insulating base plate, then the conductor is successfully built by electroplating mode, and when the circuit board is worked, the electronic components on the surface can produce high temp., and its high temp. can not be naturally diffused, so that the service life of main board can be reduced
The prior art has the following defects and shortcomings: current circuit board heat dissipation method is at the surface heat conduction silicone grease of scribbling, but heat conduction silicone grease can slowly reduce along with the lapse of time when using, make the radiating effect of self weaken, the surface of mainboard can set up other heat conduction materials for a few, like silver, copper, aluminium etc., the heat conductivility of silver is good, but the price is more expensive, the low price of aluminium, but the heat conduction effect of self is not like copper and silver, owing to scribble the carbon oil layer on the surface of circuit board, carbon oil distributes the infiltration everywhere after the carbon oil layer is heated, it leads to the mainboard short circuit to permeate in the gap of mainboard probably from.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a circuit board printing method for preventing carbon oil leakage short circuit, which can solve the problem of the existing circuit board printing method for preventing carbon oil leakage short circuit; this device passes through the screen printing speed that the screen printing must control solder mask, insulating layer and conducting layer, slows down the printing rhythm for the coating is even and fine and close, should also notice screen printing direction and wire and walk the line, should select the swap screen printing of 180 orientations in order to distinguish two layers of insulating layer screen printing, so that the isolation layer is flat and fine and close, effective problem solving.
In order to achieve the purpose of the circuit board printing method for preventing the carbon oil from leaking oil and short circuit, the invention provides the following technical scheme: a circuit board printing method for preventing carbon oil leakage short circuit comprises substrate blanking, positioning hole punching, surface cleaning, graphic layer printing, curing etching, stripping surface cleaning, nickel plating, gold plating, solder resist printing, curing, insulating isolation layer printing, curing, reverse side mark printing, curing, carbon conductive layer printing, curing, surface cleaning, mark and protection film printing, curing, punching blanking, electrical inspection, groove cutting, peelable glue printing, curing, surface treatment and finished product inspection.
Preferably, the conductive carbon ink value of the insulating isolation layer is 1.0-1.2, and the insulating layer ink of a phenolic system is preferably selected.
Preferably, the carbon ink is selected as a main component of the carbonaceous conductive ink, the carbon ink particles are approximately spherical colloid particles, the graphitized carbon ink has high carbon content, low electronegativity and high conductivity, and the surface area of the particles is large, so that the produced adsorption effect is strong; the dispersion of the fine particles is increased, so that the resistance is reduced, the conductivity is improved, the surface area is increased, and the wear resistance is enhanced.
Preferably, the screen printing speed of the solder mask layer, the insulating layer and the conducting layer is controlled by the screen printing, the printing rhythm is slowed down, the coating is uniform and compact, the screen printing direction and the wire routing are also noticed, and the screen printing in the 180-degree direction is selected for distinguishing the two insulating layers, so that the isolation layer is flat and compact.
Preferably, the screen printing sequence of the screen printing solder mask layer and the isolation layer is as follows: the screen mesh of the silk screen is controlled to be between 150 meshes and 250 meshes, the film thickness is preferably controlled to be 25-50 mu m, the curing condition has influence on the sheet resistance, the curing temperature is generally high, and the sheet resistance value is lower; the longer the curing temperature, the lower the sheet resistance value.
Preferably, the manufacturing of the conductive carbon ink printed board is started from a process, a die and a clamp, the sequence of screen printing and punching of the conductive layer is changed, the upper die of the die needs to be provided with a blind position, the press-fit part of the conductive carbon ink layer is avoided, and the quality of a product is ensured.
Preferably, the lines and contacts of the conductive layer are connecting lines communicating with the lines of the inner layer of the upper eye, the keys are in contact with the conductive rubber to communicate with the outer lines, in order to ensure the cleanness of the surfaces of the keys and prevent the keys from being polluted by welding flux or other impurities, an adhesive tape is generally adopted for protection in production, and the adhesive tape is seriously transferred due to the fact that the adhesive tape is heated and cooled again.
Preferably, the conducting layer makes the signal emission production misplaced and secondary, influence the use, can adopt the adhesive film, as the protection of the key position, can choose the chemical treatment to combine mechanical polishing and washing, the method of the screen printing scaling powder, but the mechanical washing is apt to scratch the conducting layer, the chemical cleaning method can't wash the material in the pore space of the conducting layer too, make the resistance of the electric layer increase, the cohesion is reduced, adopt the strippable ink of the screen printing better, or paste the adhesive tape that the adhesive does not transfer to carry on the protection of the key position and circuit, then carry on the surface treatment; direct dip coating with water-soluble antioxidant is also available.
Compared with the prior art, the invention provides the circuit board printing method for preventing the carbon oil from leaking oil and short circuit, which has the following beneficial effects:
1. according to the circuit board printing method for preventing the carbon oil leakage short circuit, the carbon printing ink is selected as the main component through the carbon conductive printing ink, the carbon printing ink particles are approximately spherical colloid particles, the carbon content of the graphitized carbon printing ink is high, the electronegativity is low, the conductivity is high, the surface area of the particles is large, and the produced adsorption effect is strong; because its tiny granule makes its dispersity increase, therefore resistance reduces, the electric conductivity improves, the surface area increases, the wearability reinforcing, the screen printing must control the screen printing speed of solder mask, insulating layer and conducting layer, slows down the printing rhythm, makes the coating even and fine and close, should also pay attention to screen printing direction and wire and walk the line, should select the swap screen printing of 180 orientations in order to distinguish two layers of insulating layer screen printing, so that the isolation layer is flat and fine, thereby has reached the effect that prevents the short circuit of carbon oil seepage.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A circuit board printing method for preventing carbon oil leakage short circuit comprises substrate blanking, positioning hole punching, surface cleaning, graphic layer printing, curing etching, stripping surface cleaning, nickel plating, gold plating, solder resist printing, curing, insulating isolation layer printing, curing, reverse side mark printing, curing, carbon conductive layer printing, curing, surface cleaning, mark and protection film printing, curing, punching blanking, electrical inspection, groove cutting, peelable glue printing, curing, surface treatment and finished product inspection.
The conductive carbon ink value of the insulating isolation layer is 1.0-1.2, and the conductive carbon ink is suitable for the insulating layer ink of a phenolic aldehyde system.
The carbon ink is selected as the main component of the carbonaceous conductive ink, the shape of carbon ink particles is approximately spherical colloid particles, the graphitized carbon ink has high carbon content, low electronegativity, high conductivity and large surface area of the particles, and the produced adsorption effect is strong; the dispersion of the fine particles is increased, so that the resistance is reduced, the conductivity is improved, the surface area is increased, and the wear resistance is enhanced.
The screen printing speed of the solder mask layer, the insulating layer and the conducting layer is controlled by screen printing, the printing rhythm is slowed down, the coating is uniform and compact, the screen printing direction and the wire routing are noticed, and the screen printing in the direction of 180 degrees is selected for distinguishing the two layers of insulating layers, so that the isolating layer is flat and compact.
The screen printing sequence of the screen printing solder mask layer and the isolation layer is as follows: the screen mesh of the silk screen is controlled to be between 150 meshes and 250 meshes, the film thickness is preferably controlled to be 25-50 mu m, the curing condition has influence on the sheet resistance, the curing temperature is generally high, and the sheet resistance value is lower; the longer the curing temperature, the lower the sheet resistance value.
The manufacturing of the conductive carbon ink printed board is started from the processes, the dies and the clamps, the sequence of screen printing and punching of the conductive layer is changed, the upper die of the die needs to be opened at a blind position, the press-fit part of the conductive carbon ink layer is avoided, and the quality of the product is ensured.
The lines and contacts of the conducting layer are the connecting lines for communicating the inner layer lines of the upper eye, and the contact of the key positions with the conducting rubber is the connection for communicating the outer lines, so as to ensure the cleanness of the surfaces of the key positions and prevent the welding flux or other impurities from polluting the key positions, in the production, the adhesive tape is generally adopted for protection, and the adhesive tape is seriously transferred because the adhesive tape is heated and cooled again.
The conducting layer makes the signal emission production misplace and secondary, influence the use, can adopt the adhesive film, as the protection of the key position, can also choose the chemical treatment to combine the mechanical polishing and washing, the method of the screen printing scaling powder, but the mechanical washing is apt to abrade the conducting layer, the chemical cleaning method can't clean the material in the conducting layer pore too, make the resistance of the electric layer increase, the cohesion is reduced, adopt the strippable ink of the screen printing better, or paste the adhesive tape that the adhesive does not transfer to carry on the protection of key position and circuit, then carry on the surface treatment; direct dip coating with water-soluble antioxidant is also available.
In conclusion, the carbon ink is selected as the main component of the carbon conductive ink, the carbon ink particles are approximately spherical colloid particles, the graphitized carbon ink has high carbon content, low electronegativity, high conductivity and large surface area of the particles, and the produced adsorption effect is strong; because its tiny granule makes its dispersity increase, therefore resistance reduces, the electric conductivity improves, the surface area increases, the wearability reinforcing, the screen printing must control the screen printing speed of solder mask, insulating layer and conducting layer, slows down the printing rhythm, makes the coating even and fine and close, should also pay attention to screen printing direction and wire and walk the line, should select the swap screen printing of 180 orientations in order to distinguish two layers of insulating layer screen printing, so that the isolation layer is flat and fine, thereby has reached the effect that prevents the short circuit of carbon oil seepage.
The working use process and the installation method of the invention are that when the circuit board printing method for preventing the carbon oil seepage short circuit is used, the carbon printing ink is selected as the main component through the carbon conductive printing ink, the shape of the carbon printing ink particles is approximately spherical colloid particles, the carbon content of the graphitized carbon printing ink is high, the electric shade rate is low, the electric conductivity is high, the surface area of the particles is large, and the produced adsorption effect is strong; the dispersion degree of the nano-particles is increased due to the micro-particles, so that the resistance is reduced, the conductivity is improved, the surface area is increased, and the wear resistance is enhanced; the screen printing must control the screen printing speed of the solder mask layer, the insulating layer and the conducting layer, slow down the printing rhythm, make the coating uniform and compact, should pay attention to the screen printing direction and the wire routing, in order to distinguish the screen printing of the two insulating layers should choose the 180 degrees direction to change the screen printing, so as to make the isolating layer flat and compact; the screen printing sequence of the screen printing solder mask layer and the isolation layer is as follows: the screen mesh of the silk screen is controlled to be between 150 meshes and 250 meshes, the film thickness is preferably controlled to be 25-50 mu m, the curing condition has influence on the sheet resistance, the curing temperature is generally high, and the sheet resistance value is lower; the longer the curing temperature, the lower the sheet resistance value; the manufacturing of the conductive carbon ink printed board is started from the processes, the dies and the clamps, the sequence of screen printing and punching of the conductive layer is changed, the upper die of the die needs to be opened at a blind position, and the pressed part of the conductive carbon ink layer is avoided, so that the quality of the product is ensured; the lines and contacts of the conducting layer are the connecting lines for communicating the inner layer lines of the upper eye, and the contact of the key positions with the conducting rubber is the connection for communicating the outer lines, in order to ensure the cleanness of the surfaces of the key positions and prevent welding flux or other sundries from polluting the key positions, in the production, the adhesive tape is generally adopted for protection, and the adhesive tape is heated and cooled again, so that the adhesive tape is seriously transferred; the conducting layer makes the signal emission production misplace and secondary, influence the use, can adopt the adhesive film, as the protection of the key position, can also choose the chemical treatment to combine the mechanical polishing and washing, the method of the screen printing scaling powder, but the mechanical washing is apt to abrade the conducting layer, the chemical cleaning method can't clean the material in the conducting layer pore too, make the resistance of the electric layer increase, the cohesion is reduced, adopt the strippable ink of the screen printing better, or paste the adhesive tape that the adhesive does not transfer to carry on the protection of key position and circuit, then carry on the surface treatment; direct dip coating with water-soluble antioxidant is also available.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A circuit board printing method for preventing carbon oil from oil leakage short circuit is characterized in that: the method comprises the steps of substrate blanking, positioning hole punching, surface cleaning, pattern layer printing, curing etching, stripping surface cleaning, nickel plating, gold plating, solder resist printing, curing, insulating isolation layer printing, curing, reverse side mark printing, curing, carbonaceous conducting layer printing, curing, surface cleaning, mark and protective film printing, curing, punching blanking, electrical inspection, groove cutting, peelable glue printing, curing, surface treatment and finished product inspection.
2. A method for printing a circuit board to prevent a carbon oil from leaking an oil short circuit according to claim 1, wherein: the conductive carbon printing ink value of the insulating isolation layer is 1.0-1.2, and the conductive carbon printing ink is suitable for the insulating layer printing ink of a phenolic aldehyde system.
3. A method for printing a circuit board to prevent a carbon oil from leaking an oil short circuit according to claim 1, wherein: the carbon ink is selected as a main component of the carbonaceous conductive ink, the shape of carbon ink particles is approximately spherical colloid particles, the graphitized carbon ink has high carbon content, low electronegativity, high conductivity and large surface area of the particles, and the produced adsorption effect is strong; the dispersion of the fine particles is increased, so that the resistance is reduced, the conductivity is improved, the surface area is increased, and the wear resistance is enhanced.
4. A method for printing a circuit board to prevent a carbon oil from leaking an oil short circuit according to claim 1, wherein: the screen printing speed of the solder mask layer, the insulating layer and the conducting layer is controlled by screen printing, the printing rhythm is slowed down, the coating is uniform and compact, the screen printing direction and the wire routing are noticed, and the screen printing in the direction of 180 degrees is selected for distinguishing the two layers of insulating layers, so that the isolating layer is flat and compact.
5. A circuit board printing method for preventing carbon oil from leaking oil and short circuit according to claim 4, characterized in that: the screen printing sequence of the screen printing solder mask layer and the isolation layer is as follows: the screen mesh of the silk screen is controlled to be between 150 meshes and 250 meshes, the film thickness is preferably controlled to be 25-50 mu m, the curing condition has influence on the sheet resistance, the curing temperature is generally high, and the sheet resistance value is lower; the longer the curing temperature, the lower the sheet resistance value.
6. A method for printing a circuit board to prevent a carbon oil from leaking an oil short circuit according to claim 1, wherein: the manufacturing of the conductive carbon ink printed board is started from a process, a die and a clamp, the sequence of screen printing and punching of the conductive layer is changed, the upper die of the die needs to be opened at a blind position, the press-fit part of the conductive carbon ink layer is avoided, and the quality of a product is ensured.
7. A method for printing a circuit board to prevent a carbon oil from leaking an oil short circuit according to claim 1, wherein: the lines and contacts of the conducting layer are the connecting lines for communicating the inner layer lines of the upper eye, the key positions are in contact with the conducting rubber, the connecting lines are for communicating the outer lines, in order to ensure the cleanness of the surfaces of the key positions and prevent welding flux or other impurities from polluting the key positions, in production, an adhesive tape is generally adopted for protection, and the adhesive tape is seriously transferred because the adhesive tape is heated and cooled again.
8. A method for printing a circuit board to prevent a carbon oil from leaking an oil short circuit according to claim 1, wherein: the conducting layer can cause dislocation and secondary generation of signal emission production and influence use, an adhesive film can be used for protecting key positions, a chemical treatment and mechanical polishing and washing can be selected, a soldering flux method is used for screen printing, but the mechanical washing is easy to scratch the conducting layer, substances in pores of the conducting layer cannot be cleaned by a chemical cleaning method, so that the resistance value of the electric layer is increased, the binding force is reduced, screen printing strippable ink or an adhesive tape which is pasted with an adhesive and does not transfer is better used for protecting the key positions and lines, and then surface treatment is carried out; direct dip coating with water-soluble antioxidant is also available.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111611404.0A CN114222421A (en) | 2021-12-27 | 2021-12-27 | Circuit board printing method for preventing carbon oil leakage short circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111611404.0A CN114222421A (en) | 2021-12-27 | 2021-12-27 | Circuit board printing method for preventing carbon oil leakage short circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114222421A true CN114222421A (en) | 2022-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111611404.0A Pending CN114222421A (en) | 2021-12-27 | 2021-12-27 | Circuit board printing method for preventing carbon oil leakage short circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114222421A (en) |
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2021
- 2021-12-27 CN CN202111611404.0A patent/CN114222421A/en active Pending
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