Leather laceration strength determination

Determination of Tear Strength of Leather
Determination of Tear Strength of Leather

Tensile strength tests are performed to determine the tear strength of almost all leather types. However, in the evaluation of the whole skin, there are significant differences between tear and strength. These differences arise in the selection of the test sample. In conventional tear strength tests a longitudinal cut is used, whereas in ISO methods there is a cut in the middle of the test sample. ISO methods are preferred more because they can also be applied to very small pieces of leather.

Tests are performed by authorized laboratories to determine the skin tear strength under specific tests. The standards used in these tests are as follows:

  • TS EN ISO 3377-1 Leather - Physical and mechanical tests - Determination of tear load - Part 1: Single edge tear

This standard covers the method of measuring the tear strength of a skin torn from its single edge. This method is sometimes called the pants tear method and is applied to the skin of any genus.

  • TS EN ISO 3377-2 Leather - Physical and mechanical tests - Determination of tear load - Part 2: Double edge tear

This standard specifies a method for measuring the tear strength of a skin torn from its double edge. This method is sometimes called the Baumann tear method and is applied to the skin of any genus.

  • TS EN ISO 23910 Leather - Physical and mechanical tests - Measurement of seam tear resistance

This standard specifies a method for measuring seam tear strength using single hole for heavy leathers and double holes for light leathers. This method can be applied to any kind of leather but is especially suitable for thicker skins more than 1.2 mm.

  • TS 236 Physical inspection methods of finished leathers and leather

This standard covers the physical inspection methods of all finished leathers and leather. Only physical examination methods of raw hides are outside this standard.

  • IULTCS / IUP 8 Skin - Physical and mechanical tests - Determination of tear load - Part 2: Double-sided tear
  • IULTCS / IUP 40-1 Skin - Physical and mechanical tests - Determination of tear load - Part 1: Single-sided tear