The GBK-D1 Film Heat Shrinkage Tester employs air heating (air bath) principles to assess various heat shrinkage properties in films. Specifically designed for heat shrinkable films produced with polyethylene, ethylene copolymers, and mixtures, it finds application in beverage labels, bottled bundle packaging, sausage shrinkage packaging, outer film of daily chemical products, and cigarette box outer film.
This device precisely and quantitatively measures thermal shrinkage force, cold shrinkage force, shrinkage rate, shrinkage time, and other plastic film properties during thermal shrinkage. The test results offer diverse data, enabling evaluation of film heat shrinkage performance from various perspectives. This contributes to research and development for heat shrinkable films of different materials, ensuring stability in performance across various materials and meeting industry-specific requirements.
Standard GB/T 34848-2017, ISO 14616-1997, DIN 53369-1976
Test Principle The tester uses air heating principles, connecting the sample to a tension sensor and displacement sensor. After reaching maximum shrinkage force, it is cooled in a 23°C ± 2°C ambient environment, recording reference temperature, shrinkage force, and displacement data. These recorded values determine optimal shrinkage conditions for the film.
Specifications
Sensor Specifications: 5 N (standard), 10 N, 30 N (optional)
Contraction Force Accuracy: Display value ±0.5% (10%-100% of sensor specification), ±0.05%FS (0%-10% of sensor specification)
