Research on the Measurement Methods and System of Thermal Shrinkage of Film

Film thermal shrinkage rate is one of the most important indicators for evaluating film quality characteristics. Enterprises needs advanced film thermal shrinkage detection technology and equipment to ensure the product quality. In order to control the quality of the film and improve the rapidity and accuracy of the measurement results of the film heat shrinkage rate, a new method for measuring the film heat shrinkage rate based on machine vision technology is proposed. At the same time, according to the principle and process of film thermal shrinkage measurement, the key factors are analyzed, and the automatic film thermal shrinkage measurement system is designed using machine vision technology and negative pressure adsorption method. In order to verify the performance of the newly designed thin film thermal shrinkage rate automatic measurement system, experimental testing and data analysis were carried out on the system. The results show that the designed automatic measurement system for film thermal shrinkage has the characteristics of high accuracy, good repeatability and fast speed, which can meet the testing needs of enterprises.薄膜热收缩率是评估薄膜质量特性的核心指标之一。企业需借助先进的薄膜热收缩率检测技术与设备，以保障产品品质。为管控薄膜质量、提升薄膜热收缩率检测结果的快速性与准确性，本文提出一种基于机器视觉技术的薄膜热收缩率检测新方法。同时，结合薄膜热收缩率检测的原理与流程，本文分析了核心影响因素，并采用机器视觉技术与负压吸附法，设计了薄膜热收缩率自动检测系统。为验证所设计的新型薄膜热收缩率自动检测系统的性能，本文对该系统开展了实验测试与数据分析工作。实验结果表明，所设计的薄膜热收缩率自动检测系统具备检测精度高、重复性好、检测速度快的优势，可满足企业的检测需求。