The test principle and calibration method of the cardboard burst tester: What is a burst tester: a special test instrument for detecting the bursting resistance of paper, cardboard, corrugated cardboard, and the commonly used crack-resistant instrument is a Mullen -type burst tester (also known as cracking). Strength testing machine). Definition of bursting resistance: The pressure exerted by the hydraulic system, when the elastic film breaks the circular area of ​​the paper, the zui pressure. The working principle of the burst tester is based on Pascal's law: the pressure applied to the closed liquid can be transmitted from the liquid in all directions according to the original size. In the cavity of the sealed cylinder and the platen of the instrument, filled with methyl silicone oil as the medium for pressure transmission, when the motor drives the piston to advance at a constant speed, the film is pressed by the silicone oil and protrudes; Above the sample, the sample held by the upper and lower chucks is evenly stressed until the sample breaks. The processing chip locks the large pressure value of Zui, and displays the pressure value through the liquid crystal screen, and this pressure value is the bursting strength of the sample. Surgical Drapes,Nonwoven Surgical Drape,Sterile Surgical Drapes,Disposable Surgical Drapes Xinxiang Huaxi Sanitary Materials Co., Ltd. , https://www.huaximedical.com
The definition of the burst index: the burst strength divided by its quantification.
How to calibrate the problem of the bursting tester, in fact, the national relevant verification regulations, light industry standards, GB/T1539 national standards have clearly specified the calibration method - the standard pressure gauge with an accuracy of not less than 0.1% , The indication error is checked. The current calibration method is to use the aluminum foil to periodically calibrate the machine.