Why the Film Circuit Resistance Value of Nameplate Labels Is Too High: Common Causes and Solutions
Reasons why the resistance value of the membrane circuit of the nameplate label manufacturer is too large
The main reasons for the large resistance value of the membrane switch circuit are as follows:
(1) The silver paste was not stirred sufficiently before printing.
(2) The circuit baking time after printing was insufficient and the temperature was too low.
(3) The mesh of the selected screen was too fine.
(4) The silver paste of the printed circuit is too thin.
(5) The silver paste is too thin, too much diluent is added, the silver content is too low, or a diluent not specifically designed for silver paste is used.
(6) The circuit pattern design is unreasonable.
(7) The quality of raw materials such as silver paste is not good.
Based on the above reasons, the nameplate label factory can take the following methods to eliminate the reasons for the large resistance value of the membrane switch circuit:
(1) Ensure that the silver paste is fully stirred before printing, and also fully stirred when adding silver paste.
(2) Control the baking time and temperature.
(3) Replace the screen with a coarser mesh to make a qualified screen.
(4) Change the plate making method, and consider using a thick plate.
(5) Check the concentration of silver paste, pay attention to controlling the addition of diluent, and ensure that the diluent that matches the silver paste is used.
(6) Check whether the circuit design is reasonable, and make necessary improvements to the designed circuit.
(7) Replace silver paste and other raw materials that meet the quality requirements.
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