Tearing is a common property of failure of many materials like rubber, textile and paper. We also know that materials differ in their ability to tearing, some materials are quite resistant to tearing in nature when they are in their full form, but at the same time when small cut is made manually on the material, it becomes compromised. Hence, the effort required to continue the tearing along that line become less.
A tear is usually uneven and unplanned. An exception to tear is held along a perforated line, like those found on a roll of paper towel, which has been formerly cut partially so that the efforts of the tearing will produce a straight line.
Tear Resistance Testing is done to check the tearing resistance of materials used in different production verticals, but tear resistance in textile goods involves the force and weight required to spread a single line tear or the type of tear where the product is initially cut. The test is used to determine the force required to spread a tear that has already been created in the material. The tear strength of a material is calculated by dividing the force in newtons by the thickness of the material in inches, centimeters, etc. The speed or force at which a tearing resistance test is conducted affect the test significantly.
Tear Resistance testing instruments are designed and largely motivated by quality control requirements to meet ISO and ASTM standards. Presto offers Tearing strength tester to fulfil the testing requirements of various manufacturers of different production verticals. The instruments strictly adheres to ASTM D123, ASTM D1776, ASTM D689, IS 13360-5-23 (1996), ISO 6383-2:1983 etc.
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