Which Equipment is the Best For Determining the Tearing Strength of Paper

Tear strength is a significant factor in determining the durability and strength of the paper. In simple terms, it is the pressure required to tear or rip the paper/board. In technical terms, it is the perpendicular force on the sheet’s plane, required to rip multiple layers of the paper sheet from a particular distance after the tear begins. 

The test is performed using a high-quality tear-strength tester. UEC’s Elmendorf-type tearing strength tester is the most popular among all. In the following article, we are going to learn about this tester and how it can help manufacturers improve the tearing strength of the paper. 

About UEC’s Tearing Strength Tester - Elmendorf Type Model

The tearing strength test is a critical evaluation when it comes to knowing the strength and durability of the paper. UEC’s tester thus makes sure that the test is performed with utmost accuracy and speed. It has the following characteristics:

• The tester is designed to measure the tearing resistance of diverse materials. These include paper, paperboard, plastic films, and materials alike. 
• The testing unit comes with a single pendulum, which freely swings on its horizontal axis. Manufacturers can opt for interchangeable pendulums for diverse ranges.
  • For extra lightweight - A/4, range - 0-2000 mN
  • For lightweight - A, range 0-8000 mN
  • For medium weight - B, 0-16000 mN
  • For heavy weight - C, 0-32000 mN
  • For extra heavy weight - D, 0-64000 mN

• The pendulum has a mounting calibrated scale dedicated to showing the mean tearing force when the test is conducted. 
• To perform the test with utmost accuracy, manufacturers can opt for a tearing sample cutter. The cutter helps the user prepare the sample precisely so that accurate test results can be achieved.
• The main unit comes with pendulum B and weighs 22.5 kilograms.
• The dimensions of the single pendulum unit are 45x23x50 centimeters.
• The tester complies with the following standards:
  • SCAN P 11, 
  • TAPPI T414, 
  • CPPA D.9, 
  • ISO 1974, 
  • BS 4468, 
  • DIN 53128, and
  • APPITA/AS 1301.400

This needs no mention that a higher strength means higher safety. Hence, when the paper/board/film is tested using the above tester, it tells the manufacturers about a lot of things that might not be in place before and require amendments. These include the usage of raw materials, quality of fiber refining, machinery used to make the paper, bonding agents, and many other things. Manufacturers can take necessary steps regarding the above factors to improve the overall strength of the paper.
Moreover, if they haven’t yet, can switch to high-accuracy testing procedures by investing in UEC’s paper testing instruments. Besides the tearing strength testing machine, UEC houses a number of other equipment such as an edge crush tester, tensile tester, compression tester, etc. Visit the website to know about them.