Specimen preparation for cross directional internal tearing resistance for paper, paperboard and related materials, Test Method TAPPI/ANSI T 496 sp-13



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This practice is used for the preparation of test specimens for the internal tearing resistance of paper, board, and related materials when a force is applied perpendicular to the machine direction. Materials whose structures are highly directional cannot be properly tested in their cross direction according to TAPPI T 414 “Internal Testing Resistance of Paper,” because, as a rule, the tear turns toward the machine direction as it proceeds. Consequently, it is usually impossible to make a test tear of such a material truly in the cross direction. This practice has been devised to permit the tear to proceed as it will, but more or less limits the extent of the tear to the prescribed 43 mm.

For the sake of uniformity, this procedure may be used to determine the tearing resistance in the machine direction.

Specimen preparation for cross directional internal tearing
Specimen preparation for cross directional internal tearing resistance for paper, paperboard and related materials, Test Method TAPPI/ANSI T 496 sp-13
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