A liquid leakage detection sensor using ion sputtering coating circuit and its manufacturing process

Abstract

The invention relates to a manufacturing process of a liquid leakage detection sensor using an ion sputtering coating circuit. Heat-resistant and corrosion-resistant materials are used as a base film, and an insulating substance coating is formed on the upper surface of the coating by ion sputtering coating technology. Two pairs of conductive lines are made on the layer by ion sputtering coating; the upper surface of the insulating coating is provided with an adhesive layer and a protective film layer that are attached to each other; if a uniform conductive film is formed on the entire surface of the base film or the insulating coating, another covering Coating is performed after masking the tape, and after the ion sputtering coating process, the conductive line can be formed by removing the masking tape; a liquid leakage detection device is made. The beneficial effects of the present invention are: it can prevent the conduction line from being corroded due to various liquids or moisture, it can accurately detect the leakage of conductive liquid, and minimize the occurrence of false alarms; it can improve the reliability of the liquid leakage detection device; The bonding force between them reduces the possibility of peeling off the upper protective film layer and reduces the defective rate of products.

Description

technical field [0001] The invention relates to a device for detecting the leakage of conductive liquid, in particular to a liquid leakage detection sensor using an ion sputtering coating circuit and its manufacturing process, which is characterized in that it can form an inductive sensor on a film material by using an ion sputtering coating process. The conduction line of the liquid constitutes a liquid leakage detection device. Background technique [0002] The formation of interference film by ion sputtering is a new method to improve the contrast between phases to reveal the structure. Ion sputtering coating is a glow discharge in a partially vacuumed sputtering chamber to generate positive gas ions; under the acceleration of the voltage between the cathode (target) and anode (sample), the positively charged ions bombard the surface of the cathode, The cathode surface material is atomized; the formed neutral atoms are sputtered from all directions and fall to the surfac...

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Problems solved by technology

[0006] In addition, the position of the liquid leakage can be confirmed according to the impedance values ​​fed back from the two conduction lines 122, 123. Liquid leakage is detected at a position far away, and the impedance value is relatively small, indicating that liquid leakage is detected at a position close to the controller; It is produced by gravure printing (Gravure), roll to roll (Roll to Roll) printing and slit coating (Slot Die), comma roll (Comma) coating; due to the mixing ratio of conductive ink or silver compound ink in the production process Different impedance values ​​will produce large changes. At the same time, the starting conditions of the equipment during printing or coating, the drying method and temperature conditions after printing and coating, and the surrounding environmental conditions (temperature, humidity) during printing will make the conductive lines 121, The impedance values ​​of 122, 123, and 124 change, which makes the controller unable to accurately indicate the liquid leakage distance

[0007] At the same time, if in order to reduce the impedance value of the conductive lines 121, 122, 123, 124, increase the content of metal substances (silver, gold, copper, etc.) in the compound ink to print the conductive lines 121, 122, 123, 124, in practical applications Affected by the moisture and moisture in the surrounding environment of the place where the liquid leakage is detected or the facility, the conductive lines 121, 122, 123, and 124 are prone to corrosion and oxidation, resulting in higher and higher impedance values, so that it is difficult to detect liquid leakage correctly Whether or not and accurately locating the leak position increases the possibility of false alarms in the controller; and the thickness of the conductive lines 121, 122, 123, 124 formed by coating or printing on the base film layer 120 will increase, which will cause the same The adhesive force between the base film layer and the protective film layer 130 is reduced, and peeling is likely to occur, resulting in a defect in the leak detection device

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