Paper cup stiffness refers to the ability of a paper cup's body to resist deformation when subjected to external force. If the stiffness is below the normal level, the cup may become severely deformed, lose its shape, and ultimately fail during use, which can affect its overall usability. Ideally, the stiffness of the cup should be sufficient to maintain its structure without being excessively thick, as overly thick walls can increase production costs. Therefore, measuring the stiffness of paper cups is an essential part of quality control.
Paper cups are paper-based containers made from base paper (white cardboard) derived from chemical wood pulp, and they are shaped through machining and bonding. Some paper cups used for frozen foods, such as those for ice cream, jam, or butter, may have special coatings. Depending on their usage, paper cups are generally categorized into three types: cold drink cups, hot drink cups, and ice cream cups. Given their close relationship with daily food consumption, the quality of paper cups has become a major concern. In China, all manufacturers must obtain QS (Quality and Safety) certification to ensure compliance with food-grade production standards. Consumers can verify these license numbers on 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 paper cup stiffness testing. The standard defines the stiffness of paper cups and categorizes them into top-grade, first-class, and qualified products based on their stiffness values. This ensures that consumers receive safe and reliable products.
The stiffness test procedure involves placing the sample cup on the movable platform of a stiffness tester. The pressure gauge and ratchet device are adjusted so that the measuring tip is positioned near the side wall of the cup at about two-thirds of its height, with the seam facing the tester. The pressure gauge is then calibrated to touch the cup wall vertically, and the zero point is set. The ratchet handle is turned to move the tip forward by approximately 9.5 mm over one second, after which the maximum reading on the dynamometer is recorded as the stiffness value.
After testing, the stiffness data determines the quality grade of the cup. Jinan Sanquan Zhongshi Experimental Instrument Co., Ltd. specializes in manufacturing paper cup stiffness testing equipment for paper cup manufacturers. Their instruments feature automatic electronic testing, a large liquid crystal microcomputer control system, and a built-in printer for instant data output. With a dual-head design, the equipment offers greater stability and more accurate results. It is suitable not only for small paper cups but also for instant noodle cups, popcorn buckets, and other similar containers. By using professional testing equipment, the quality of paper cups is improved, contributing to better consumer experiences and higher living standards.
For more information, contact Chen Meiru at 0531-67813036 or 15666775359. For further details, visit http://news.chinawj.com.cn.
Image: Cup body stiffness tester compliant with national standard GB27590.
Submission: Image of a cup body stiffness tester compared to the national standard GB27590.
Tempered PDLC Smart Glass consist of PDLC Lamiantion Smart Film, EVA Film and Tempered Glass to Laminated with a lamination oven, power on with transparent and opaque when power off. Intelligent Glass also called Privacy Switchale Glass
Clear Switchable Smart Glass,Car Winow Smart Glass,Tempered Clear Switchable Smart Glass,Pdlc Laminated Smart Film
Shenzhen YuGuang New Material Co.,Ltd , https://www.ygsmartfilm.com