Paper cup stiffness refers to the ability of a paper cup to resist deformation when subjected to external force. When the stiffness is below the normal range, the cup may become severely deformed or even collapse, which can significantly affect its usability and performance. Ideally, the stiffness should be sufficient to maintain the structural integrity of the cup without being excessively thick, as overly thick walls can increase production costs. Therefore, measuring the stiffness of a paper cup is an essential factor in evaluating its overall quality.
Paper cups are paper-based containers typically made from white paperboard derived from chemical wood pulp. They are manufactured through machining and bonding processes and are commonly used for serving cold drinks, hot beverages, and frozen foods such as ice cream, jam, and butter. Depending on their use, they can be categorized into three types: cold drink cups, hot drink cups, and ice cream cups. As these products are closely related to daily consumption, ensuring their quality has become a major concern. In China, all paper cup manufacturers must obtain QS (Quality and Safety) certification, which ensures that their products meet food-grade safety standards. Consumers can verify the validity of these licenses through the official website of the State Administration for Market Regulation.
According to the national standard GB/T 27590-2011, issued by the General Administration of Quality Supervision, Inspection and Quarantine, there are specific requirements for the stiffness test of paper cups. This standard classifies paper cups into three quality levels—superior, first-class, and qualified—based on their stiffness values. The test method involves using a specialized stiffness tester to measure the resistance of the cup’s wall to pressure.
The testing procedure includes placing the sample cup on the movable platform of the tester, adjusting the pressure gauge so it gently touches the side wall, and then applying a controlled force to measure the maximum resistance. This data is then used to determine the quality grade of the cup.
Jinan Sanquan Zhongshi Experimental Instrument Co., Ltd. specializes in producing high-quality paper cup stiffness testers that comply with national standards. Their equipment features automatic electronic testing, a large LCD microcomputer control system, and a built-in printer for real-time data output. With a dual-head design, the device offers greater stability and accuracy, making it suitable not only for small paper cups but also for larger containers like instant noodle cups and popcorn buckets.
By using professional testing equipment, manufacturers can ensure better product quality, contributing to improved consumer satisfaction and food safety. For more information, contact Chen Meiru at 0531-67813036 or 15666775359. Visit http://news.chinawj.com.cn for additional details.
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