Method for manufacturing conductive layer of blood glucose test strip

Abstract

The invention discloses a method for manufacturing a conductive layer of a blood glucose test strip. The method comprises the following steps: S10, cleaning surface pollutants on a plastic substrate with a conductive zone, and performing roughening treatment on the conductive zone on the plastic substrate; S20, clinging one dry membrane to the conductive zone in a heating and pressurizing mode; S30, setting a circuit pattern and a metal electrode pattern of a blood glucose test strip into the conductive zone by using an image transferring method; S40, clinging palladium or nickel to the circuit pattern and the metal electrode pattern in a low-temperature electroplating mode so as to form a first conductive layer; S50, clinging gold to the first conductive layer in the low-temperature electroplating mode same as that in the step S40, so as to form a second conductive layer; S60, performing developing treatment on circuits and metal electrodes of the plastic substrate. The method has thebeneficial effects that the material and manufacturing cost of the blood glucose test strip is reduced, and the binding strength of metal materials such as palladium, nickel and gold with the plasticsubstrate of the blood glucose test strip is improved.

Description

technical field [0001] The invention relates to the technical field of blood glucose test strip manufacturing, in particular to a method for manufacturing a conductive layer of a blood glucose test strip. Background technique [0002] At present, the blood glucose test strips on the market generally print carbon electrodes on the plastic substrate by screen printing, and then compositely print the bioelectrochemical sensor containing enzyme coating, which is used to make the electrons generated by the reaction between the enzyme and the glucose in the blood The current is calculated and converted to a reading of glucose concentration. The material of the substrate generally tends to be made of PET material, which has good bending strength, is easy to implement mechanical cutting, is suitable for large-scale growth, and has a heat-resistant temperature of up to 120°C, which is suitable for high temperature after conductive carbon ink printing Therefore, the working electrode...

AI Technical Summary

Problems solved by technology

However, the process of vacuum sputtering is lengthy, the process equipment is expensive, and the thickness of the electrode produced is generally 5um, and the material cost is relatively expensive. Therefore, the production cost of vacuum sputtering is very high, which is not in line with the benefits of mass production

At the same time, due to the smooth surface of the substrate and the degree of bonding between palladium, nickel, gold and other metal materials and the substrate, the circuit on the substrate is easily scraped off the substrate after being rubbed by the protective cover during the assembly of the test piece.

In addition, when inserting the blood glucose test strip into the blood glucose meter, if the insertion position is not correct, the metal electrodes on the substrate will be rubbed off easily, resulting in distortion of detection accuracy or undetectable temperature.

However, the method of laser priming needs to first coat copper on the substrate, then electroplate palladium or nickel, and finally electroplate gold. The process is more cumbersome and the working hours are longer.

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