A process for preparing a strain gauge cover layer
By employing a sensitive grid heating and gradient temperature control method, the problems of low efficiency and quality in strain gauge cover layer preparation were solved, achieving efficient and energy-saving cover layer preparation and improving the measurement accuracy and reliability of strain gauges.
CN121062196BActive Publication Date: 2026-03-20XIAMEN LOADCELL TECH CO LTD
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Patent Information
- Application Number
- CN202511630315.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-10
- Publication Date
- 2026-03-20
- Estimated Expiration
- 2045-11-10
AI Technical Summary
Technical Problem
In existing strain gauge cover layer preparation processes, traditional thermosetting cannot directly act on the polyimide cover layer, resulting in low curing efficiency and poor quality.
Method used
The polyimide adhesive layer is directly heated by energizing a sensitive grid, and cured using a gradient temperature and pressure method, including a multi-step voltage control and heating process.
Benefits of technology
This improved the efficiency and quality of the cover layer fabrication, reduced energy consumption, and ensured the protection of the sensitive gate and the accuracy of signal transmission.
✦ Generated by Eureka AI based on patent content.
Abstract
The application discloses a strain gauge cover layer preparation process, comprising the following steps: pasting a polyimide cover layer on a first strain gauge array bulk body; obtaining a first resistance value of each sensitive grid in a sensitive grid array; according to the first resistance value, a sensitive grid area, a sensitive grid thickness, a polyimide adhesive layer area, a polyimide adhesive layer thickness, a first target temperature, a second target temperature, a third target temperature and a heat dissipation power corresponding to each target temperature, respectively obtaining a first voltage, a second voltage and a third voltage needed to be applied between a row detection heating wire and a column detection heating wire; sequentially applying the first voltage, the second voltage and the third voltage with corresponding time lengths between the row detection heating wire and the column detection heating wire, performing gradient heating for corresponding time lengths and then solidifying the polyimide adhesive layer to prepare the strain gauge cover layer. The application can improve the preparation efficiency and the preparation quality of the cover layer.
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