CN107564642A - A kind of synthetic carbon film type carbon sheet and its preparation technology - Google Patents
A kind of synthetic carbon film type carbon sheet and its preparation technology Download PDFInfo
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- CN107564642A CN107564642A CN201710910804.9A CN201710910804A CN107564642A CN 107564642 A CN107564642 A CN 107564642A CN 201710910804 A CN201710910804 A CN 201710910804A CN 107564642 A CN107564642 A CN 107564642A
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- copper foil
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Abstract
The invention discloses a kind of synthetic carbon film type carbon sheet and its preparation technology, and its carbon plate structure includes the copper foil plate as substrate, as the gold-plated copper foil layer and carbon film layer of conductive layer, and exit；It is coated on by the gold-plated copper foil layer of design on the circuit after the erosion copper of copper foil plate；Carbon film layer is prepared in the designed lines after the erosion copper of copper foil plate；Also include silver layer, insulating barrier and Low ESR carbon film layer, exit is the riveted position of termination, and the riveted position prepares silver layer after copper foil plate loses copper；Overlapping part between the silver layer and gold-plated copper foil layer or carbon film layer or Low ESR carbon film layer at exit riveted position is smooth electrical connection；Low ESR carbon film layer is prepared on silver layer and insulating barrier overlap joint position.Residual quantity of the present invention is very small, and attenuation, service life, oxidation resistance, feel greatly improve.
Description
Technical field
The present invention relates to the technical field of carbon plate used in carbon-film potentiometer, particularly a kind of synthetic carbon film type carbon sheet and
Its preparation technology.
Background technology
Synthesis film type carbon potentiometer be widely used in making in the electronic equipments such as multi-media sound system, radio cassette player, sound console volume,
Tone, balance control and electric current, voltage-regulation, can also realize remote control adjustment.Synthetic carbon film type carbon sheet is the basic portion of its structure
Part, brush and contact thereon are on the move, constantly change with the print carbon circle (bar) on synthetic carbon film type carbon sheet, print silver circle (
Bar) contact position, so as to obtaining different resistance values between terminal.A kind of structure of synthetic carbon film type carbon sheet includes base
Layer, conductive layer and exit, conductive layer application to printed is directly printed on the surface of basic unit side, exit or galvanic corrosion is in basic unit
Draw position and smoothly electrically connected with conductive layer, its conductive layer includes carbon film layer and metal conducting layer.
The structure and processing technology of traditional synthetic carbon film type carbon sheet have two kinds：
The first, basic unit is bakelite substrate, and conductive layer is silver layer and carbon film layer, and its method processed claims silver-colored carbon typography, i.e.,
According to design corresponding site print silver layer, printing carbon-coating, after on silver layer print low-resistance carbon-coating.This structure and technique letter
It is single, it is the most commonly used easy structure of in the market and mode of printing, is only capable of being used in the product of common low grade, its residual is higher,
Life-span is shorter, and oxidation resistance is poor, and attenuation is small etc..
Second, basic unit is copper foil plate, and conductive layer is gold-plated copper foil layer and carbon film layer, and its method processed claims copper foil carbon to print
Dataller's skill, and low-resistance carbon-coating is printed on gold-plated copper foil layer.The structure and technique are compared with the first in residual, attenuation, anti-oxidant
Increased in ability, service life, but because copper foil is too hard, it is uncontrollable in riveted exit technique, often it is led to contact not
It is good（INT）Occur, cause the generation of product hidden danger.
Publication No. CN 101419857A Chinese invention patent, it discloses a kind of synthetic carbon film type carbon sheet and its system
Standby technique, is related to synthetic carbon film type carbon sheet used in carbon-film potentiometer and its preparation technology.The structure of its carbon plate includes making
For the copper foil plate of substrate, Gold plated Layer, exit silver layer, overlap joint solidification Low ESR carbon film layer and curved characteristic as conductive layer
The carbon film layer of change；Its exit using it is traditional take out pipe end silver layer riveted or new-type plane material strip on copper foil directly
Welding is transmitted；Silver layer is printed after copper foil plate loses copper in the riveted position.The preparation technology of its carbon plate, including：Copper will be lost
Required circuit afterwards carries out gold-plated processing；Erosion Copper treatment is carried out at the riveted position of exit, is printed at the erosion copper position
Silver layer；Print carbon film layer；On the gold-plated copper foil of circuit has been lost and silver-colored and gold-plated copper foil overlapping part prints Low ESR carbon film layer.
Its advantage is obvious：Residual resistance very little, attenuation, life-span, oxidation resistance and feel improve；Riveted is reliable, and contact is good
It is good.But its Low ESR carbon film layer is printed on gold-plated copper foil layer, causes conductive characteristic unstable, and it have impact on overall conduction
Effect, and gold-plated copper foil layer span is big, and cost is higher.
The content of the invention
The technical problem to be solved in the present invention is to be directed to above-mentioned the deficiencies in the prior art, there is provided a kind of synthetic carbon film type carbon sheet
And its preparation technology.
In order to solve the above technical problems, the technical solution used in the present invention is：A kind of synthetic carbon film type carbon sheet, it includes
As the copper foil plate of substrate, as the gold-plated copper foil layer and carbon film layer of conductive layer, and exit；Plated by gold-plated copper foil layer is designed
Make on the circuit after the erosion copper of copper foil plate；Carbon film layer is prepared in the designed lines after the erosion copper of copper foil plate；Also include silver layer,
Insulating barrier and Low ESR carbon film layer, exit are the riveted position of termination, and the riveted position prepares silver after copper foil plate loses copper
Layer；Overlapping part between the silver layer and gold-plated copper foil layer or carbon film layer or Low ESR carbon film layer at exit riveted position is smooth
Electrical connection；Low ESR carbon film layer is prepared on silver layer and insulating barrier overlap joint position.
In above-mentioned technical proposal, the gold-plated copper foil layer includes principal part and secondary portion, and the less secondary portion of area is larger from area
Principal part on draw, principal part is directly electrically connected with silver layer, and principal part is electrically connected by secondary portion with carbon film layer.
In above-mentioned technical proposal, the gold-plated copper foil layer part strides into the printing zone of Low ESR carbon film layer, in gold plated copper
What layers of foil surface strode into the printing zone is partially covered with above-mentioned insulating barrier.
In above-mentioned technical proposal, electrically insulated from one another, i.e. copper foil plate between exit in the plane between the exit
It is eclipsed copper.
In above-mentioned technical proposal, the carbon film layer, insulating barrier, Low ESR carbon film layer are designed to vertical bar shape, fan-shaped or circle.
In order to further solve above-mentioned the deficiencies in the prior art, the present invention also provides a kind of preparation of synthetic carbon film type carbon sheet
Technique, it comprises the following steps：
Step 1：Copper foil plate prepare gold-plated copper foil layer circuit position, copper foil plate designed exit riveting part
Position, the circuit position for preparing in copper foil plate carbon film layer carry out erosion Copper treatment；
Step 2：By design requirement, copper foil plate prepare gold-plated copper foil layer circuit position carry out erosion Copper treatment after, after erosion copper
Required circuit carries out gold-plated processing, obtains gold-plated copper foil layer；
Step 3：By design requirement, erosion Copper treatment is carried out at the circuit position at the riveted position of the designed exit of copper foil plate
Afterwards, the silver layer that printing electrically connects with gold-plated copper foil layer at the erosion copper position；
Step 4：By design requirement, after carrying out erosion Copper treatment at the circuit position of the designed carbon film layer of copper foil plate, in the erosion
The carbon film layer that the printing of copper position electrically connects with gold-plated copper foil layer；
Step 5：By design requirement, insulating barrier is printed on the bypass position along the circuit position of carbon film layer；
Step 6：By design requirement, the silver layer of printing overlap joint on the insulating layer, prints and the silver on the insulating layer on exit
The Low ESR carbon film layer of layer electrical connection；
Step 7：It can be used in exit and take out the sub- sludge ice riveted of pipe end or plane material strip terminal leg technique progress external connection.
The beneficial effects of the invention are as follows：
First, its performance significantly improves of the product of this carbon plate preparation, residual resistance very little, can make to less than 2 ohm and more
Accurately, attenuation can bring up to 100dB (decibels）More than（Insertion loss is less than 0.1dB）, the life-span can be improved to more than 60,000 times,
Oxidation resistance is extremely strong, is particularly suitable for the use of high highly sophisticated products；
Second, the riveted position riveted of exit is reliable, it is contacted well, is avoided contact with bad（INT）Occur, it is ensured that quality；
Third, using material strip leg technique, because its technological operation is simple, conveniently, therefore its efficiency high, cost can be reduced；
Fourth, the reduction of gold-plated amount can effectively save preparation cost.
Brief description of the drawings
Fig. 1 is the carbon plate structural representation of the present invention；
Fig. 2 is the preparation technology schematic diagram of the present invention.
In figure, 1, copper foil plate；2nd, gold-plated copper foil layer；3rd, carbon film layer；4th, exit；5th, silver layer；6th, insulating barrier；7th, Low ESR
Carbon film layer；21st, principal part；22nd, secondary portion.
Embodiment
The invention will now be described in further detail with reference to the accompanying drawings.
As shown in figure 1, a kind of synthetic carbon film type carbon sheet, it includes the copper foil plate 1 as substrate, as the gold-plated of conductive layer
Copper foil layer 2 and carbon film layer 3, and exit 4；It is coated on by the gold-plated copper foil layer 2 of design on the circuit after the erosion copper of copper foil plate 1；
Carbon film layer 3 is prepared in the designed lines after the erosion copper of copper foil plate 1；Also include silver layer 5, insulating barrier 6 and Low ESR carbon film layer 7,
Exit 4 is the riveted position of termination, and the riveted position prepares silver layer 5 after copper foil plate 1 loses copper；The riveted position of exit 4
Silver layer 5 and gold-plated copper foil layer 2 or carbon film layer 3 or Low ESR carbon film layer 7 between overlapping part be smooth electrical connection；In silver
Layer 5 overlaps with insulating barrier 6 and prepares Low ESR carbon film layer 7 on position.
Wherein, the gold-plated copper foil layer 2 includes principal part 21 and secondary portion 22, and the less secondary portion 22 of area is from the larger master of area
Drawn in portion 21, principal part 21 is directly electrically connected with silver layer 5, and principal part 21 is electrically connected by secondary portion 22 with carbon film layer 3.
Wherein, the part of gold-plated copper foil layer 2 strides into the printing zone of Low ESR carbon film layer 7, on the gold-plated surface of copper foil layer 2
Stride into the printing zone is partially covered with above-mentioned insulating barrier 6.
Wherein, electrically insulated from one another, i.e. copper foil plate 1 between exit 4 are eclipsed copper in the plane between the exit 4.
Wherein, the carbon film layer 3, insulating barrier 6, Low ESR carbon film layer 7 are designed to vertical bar shape, fan-shaped or circle.The present invention
Embodiment is vertical bar shape.
As shown in Fig. 2 a kind of preparation technology of synthetic carbon film type carbon sheet of the present invention, it comprises the following steps：
Step 1：Copper foil plate 1 prepare gold-plated copper foil layer 2 circuit position, copper foil plate 1 designed exit 4 riveted
Position, the circuit position for preparing in copper foil plate 1 carbon film layer 3 carry out erosion Copper treatment；
Step 2：By design requirement, copper foil plate 1 prepare gold-plated copper foil layer 2 circuit position carry out erosion Copper treatment after, copper will be lost
Required circuit carries out gold-plated processing afterwards, obtains gold-plated copper foil layer 2；
Step 3：By design requirement, carry out losing at copper at the circuit position at the riveted position of the designed exit 4 of copper foil plate 1
After reason, the silver layer 5 electrically connected with gold-plated copper foil layer 2 is printed at the erosion copper position；
Step 4：By design requirement, after carrying out erosion Copper treatment at the circuit position of the designed carbon film layer 3 of copper foil plate 1, at this
The carbon film layer 3 that the printing of erosion copper position electrically connects with gold-plated copper foil layer 2；
Step 5：By design requirement, insulating barrier 6 is printed on the bypass position along the circuit position of carbon film layer 3；
Step 6：By design requirement, on exit 4 printing be overlapped on the silver layer 5 on insulating barrier 6, on insulating barrier 6 printing with
The Low ESR carbon film layer 7 of the silver layer 5 electrical connection；
Step 7：It can be used in exit 4 and take out the sub- sludge ice riveted of pipe end or plane material strip terminal leg technique progress external connection.
Gold-plated copper foil layer 2 in the present invention refers to by gold-plated method, the thin shape layer gold obtained；Silver layer 5 refers to silver powder
Deng the slurry with adhesive, corresponding site is coated in by the method for printing, the thin layer of the argentiferous obtained；Carbon film layer 3 is to lead
The slurry with adhesive such as the graphite of electric material, carbon black, by the method for printing, is obtained coated in corresponding site.It is and low
Impedance carbon film layer 7 can be low-resistance carbon-coating.
Embodiment above is merely illustrative and not limiting to the invention, therefore all according to described in present patent application scope
The equivalent change or modification done of method, be included in the range of present patent application.
Claims (6)
- A kind of 1. synthetic carbon film type carbon sheet, it is characterised in that：Including the copper foil plate as substrate, the gold-plated copper foil as conductive layer Layer and carbon film layer, and exit；It is coated on by the gold-plated copper foil layer of design on the circuit after the erosion copper of copper foil plate；It is prepared by carbon film layer In designed lines after the erosion copper of copper foil plate；Also include silver layer, insulating barrier and Low ESR carbon film layer, exit is the riveting of termination Position is closed, the riveted position prepares silver layer after copper foil plate loses copper；The silver layer at exit riveted position and gold-plated copper foil layer or Overlapping part between carbon film layer or Low ESR carbon film layer is smooth electrical connection；It is low with being prepared on insulating barrier overlap joint position in silver layer Impedance carbon film layer.
- A kind of 2. synthetic carbon film type carbon sheet according to claim 1, it is characterised in that：The gold-plated copper foil layer includes principal part With secondary portion, the less secondary portion of area is drawn from the larger principal part of area, and principal part directly electrically connects with silver layer, and principal part passes through secondary portion Electrically connected with carbon film layer.
- A kind of 3. synthetic carbon film type carbon sheet according to claim 1, it is characterised in that：The gold-plated copper foil layer part strides into The printing zone of Low ESR carbon film layer, the printing zone is striden on gold-plated copper foil layer surface is partially covered with above-mentioned insulation Layer.
- A kind of 4. synthetic carbon film type carbon sheet according to claim 1, it is characterised in that：Between the exit in the plane Copper foil plate between electrically insulated from one another, i.e. exit is eclipsed copper.
- A kind of 5. synthetic carbon film type carbon sheet according to claim 1, it is characterised in that：The carbon film layer, insulating barrier, low-resistance Anti- carbon film layer is designed to vertical bar shape, fan-shaped or circle.
- 6. a kind of preparation technology of synthetic carbon film type carbon sheet, it is characterised in that comprise the following steps：Step 1：Copper foil plate prepare gold-plated copper foil layer circuit position, copper foil plate designed exit riveting part Position, the circuit position for preparing in copper foil plate carbon film layer carry out erosion Copper treatment；Step 2：By design requirement, copper foil plate prepare gold-plated copper foil layer circuit position carry out erosion Copper treatment after, after erosion copper Required circuit carries out gold-plated processing, obtains gold-plated copper foil layer；Step 3：By design requirement, erosion Copper treatment is carried out at the circuit position at the riveted position of the designed exit of copper foil plate Afterwards, the silver layer that printing electrically connects with gold-plated copper foil layer at the erosion copper position；Step 4：By design requirement, after carrying out erosion Copper treatment at the circuit position of the designed carbon film layer of copper foil plate, in the erosion The carbon film layer that the printing of copper position electrically connects with gold-plated copper foil layer；Step 5：By design requirement, insulating barrier is printed on the bypass position along the circuit position of carbon film layer；Step 6：By design requirement, the silver layer of printing overlap joint on the insulating layer, prints and the silver on the insulating layer on exit The Low ESR carbon film layer of layer electrical connection；Step 7：It can be used in exit and take out the sub- sludge ice riveted of pipe end or plane material strip terminal leg technique progress external connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710910804.9A CN107564642A (en) | 2017-09-29 | 2017-09-29 | A kind of synthetic carbon film type carbon sheet and its preparation technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710910804.9A CN107564642A (en) | 2017-09-29 | 2017-09-29 | A kind of synthetic carbon film type carbon sheet and its preparation technology |
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| Publication Number | Publication Date |
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| CN107564642A true CN107564642A (en) | 2018-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710910804.9A Pending CN107564642A (en) | 2017-09-29 | 2017-09-29 | A kind of synthetic carbon film type carbon sheet and its preparation technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109262226A (en) * | 2018-11-17 | 2019-01-25 | 东莞市钺河自动化科技有限公司 | A kind of novel scattered end riveting carbon plate automatic assembling |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101419857A (en) * | 2007-10-26 | 2009-04-29 | 升威电子制品(东莞)有限公司 | Synthetic carbon film type carbon sheet and manufacturing process thereof |
| CN201438399U (en) * | 2009-06-18 | 2010-04-14 | 门泰工业股份有限公司 | Angle limitation free variable resistor with regularly varying resistance |
| CN206331862U (en) * | 2016-12-23 | 2017-07-14 | 博罗县宏宇创新电子有限公司 | It is a kind of can 360 ° rotation carbon-film potentiometer |
| CN207503747U (en) * | 2017-09-29 | 2018-06-15 | 广东升威电子制品有限公司 | A kind of synthetic carbon film type carbon sheet |
-
2017
- 2017-09-29 CN CN201710910804.9A patent/CN107564642A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101419857A (en) * | 2007-10-26 | 2009-04-29 | 升威电子制品(东莞)有限公司 | Synthetic carbon film type carbon sheet and manufacturing process thereof |
| CN201438399U (en) * | 2009-06-18 | 2010-04-14 | 门泰工业股份有限公司 | Angle limitation free variable resistor with regularly varying resistance |
| CN206331862U (en) * | 2016-12-23 | 2017-07-14 | 博罗县宏宇创新电子有限公司 | It is a kind of can 360 ° rotation carbon-film potentiometer |
| CN207503747U (en) * | 2017-09-29 | 2018-06-15 | 广东升威电子制品有限公司 | A kind of synthetic carbon film type carbon sheet |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109262226A (en) * | 2018-11-17 | 2019-01-25 | 东莞市钺河自动化科技有限公司 | A kind of novel scattered end riveting carbon plate automatic assembling |
| CN109262226B (en) * | 2018-11-17 | 2023-10-31 | 广东钺河智能科技有限公司 | Novel automatic assembling machine for scattered end riveting carbon sheets |
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