Improved printing process of resin plate resistance sheet for potentiometer
A technology of resin board and resistor sheet, applied in printing, resistor, resistor manufacturing and other directions, can solve the problems affecting the size of the potentiometer and the thickness of the resistor sheet, and achieve the effect of small thickness, reduced thickness and simple process
Active Publication Date: 2019-11-12
东莞福哥电子有限公司
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- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Conventional resistor sheet printing process generally prints conductive lines on the substrate first, and then selectively covers the conductive lines with carbon film. The thickness of the obtained resistor sheet is large, which affects the size of the potentiometer.
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0021] An improved printing process for a resin board resistor sheet for a potentiometer, comprising the following steps:
[0022] a. Design the screen pattern and make the screen, and set the thickness of the screen to 8-13 μm;
[0023] b. Using the plastic body or bakelite board as the substrate, dig a groove on the printing area of the substrate, and the depth of the groove formed is 8μ~20μ;
[0024] c. Lay the screen on the surface of the substrate, and print the metal silver paste on the surface of the substrate through the screen with a squeegee. The drying temperature is 145-155°C. After drying, the printed area forms a conductive metal circuit;
[0025] d. Lay the screen on the conductive metal circuit, and use the squeegee to print the conductive carbon paste on the surface of the substrate through the screen. The conductive carbon paste needs to be printed on the groove of the substrate. The drying temperature is 165-175°C. A resistive carbon film is formed at the...
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Abstract
The invention provides an improved printing process of a resin plate resistance sheet for a potentiometer. The improved printing process comprises the following steps that a silk screen pattern is designed, and a silk screen is manufactured; a plastic body or a bakelite plate is used as a substrate, and a groove is formed in a printing area of the substrate; the silk screen is laid on the surfaceof the substrate, conductive metal paste is printed on the surface of the substrate through scraping glue, and a conductive metal circuit is formed in the printed area after drying; the silk screen islaid on the conductive metal circuit, the conductive carbon paste is printed on the surface of the substrate through the scraping glue, a resistance carbon film is formed in the position of the driedgroove, wherein the thickness of the resistance carbon film on the substrate is 3-5 microns; and the printed substrate is placed in a hot-pressing jig to be subjected to hot pressing, and the thickness of the resistance carbon film after hot pressing on the substrate is 1-3 microns. According to the improved printing technology of the resin plate resistance sheet for the potentiometer, the process is simple, and the manufactured resistance sheet is small in thickness.
Description
technical field [0001] The invention relates to the technical field of rocker potentiometers, in particular to an improved printing process of a resin plate resistance sheet for a potentiometer. Background technique [0002] With the rapid development of science and technology, electrode sheets are often used in electrical appliances and instruments, which tend to be multi-functional and miniaturized, and have applications in many fields, such as rocker potentiometers, machine tools, automotive control components, home appliances, Electronic toys, etc. Generally, the surface of the resistor sheet in electronic products needs to print a carbon film with an electrical impedance value of 1kΩ-500kΩ to control the output impedance. In the conventional resistor sheet printing process, the conductive circuit is printed on the substrate first, and then the carbon film is selectively covered on the conductive circuit. The thickness of the obtained resistor sheet is large, which affec...
Claims
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IPC IPC(8): H01C17/065H01C10/00B41M1/12B41M1/30B41M1/36
CPCB41M1/12B41M1/30B41M1/36H01C10/00H01C17/065H01C17/0652
Inventor 黄国维
Owner 东莞福哥电子有限公司