A device for detecting the light transmittance of plastic agricultural film and a detection method thereof

By designing a light transmittance testing device for plastic agricultural film, and employing arc adjustment and illumination angle simulation, combined with tension state testing, the problem of discrepancies between test results and actual performance in existing technologies has been solved, achieving more accurate light transmittance testing.

CN122171501APending Publication Date: 2026-06-09SICHUAN LIAI PLASTIC TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SICHUAN LIAI PLASTIC TECH CO LTD
Filing Date
2026-05-07
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing methods for testing the light transmittance of plastic agricultural films cannot accurately reflect their performance under actual working conditions, especially under curved tension and oblique incidence conditions, leading to significant discrepancies between test results and actual performance.

Method used

A device for detecting the light transmittance of plastic agricultural film was designed, including an elastic arc-shaped support, a light source, a light receiver, and a clamping unit. The arc-shaped adjustment unit and the position adjustment unit simulate the state of the agricultural film under different curvatures and light angles. Combined with the pressure monitoring component to simulate the tension state, the device can detect light transmittance under multiple working conditions.

Benefits of technology

It improves the representativeness and accuracy of test results, truly reflects the light transmittance performance of agricultural film under actual working conditions, eliminates the deviation between traditional planar testing and actual use, and provides more comprehensive test coverage and result representativeness.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention belongs to the field of plastic film testing technology, and specifically relates to a device and method for testing the light transmittance of agricultural plastic film. The device includes a housing and a back shell integrally formed on the back of the housing. A controller is fixed to the top of the housing, and a door is installed at the opening of the housing. It also includes an elastic arc-shaped support member disposed inside the housing, with strip-shaped testing holes on its surface. This invention can accurately simulate the arc-shaped working conditions and light angles of agricultural plastic film in actual greenhouse use, making the test results more consistent with real application scenarios. It is compatible with multiple testing states, including arc and planar shapes, and can complete multi-condition, multi-dimensional performance testing in one go. Simultaneously, it can accurately reproduce the tension deformation and stress state of the agricultural film during application, truly reflecting its optical performance under actual working conditions, significantly improving the representativeness and comprehensiveness of the test results.
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