Method for the absolute measurement of the tearing strength of fibres
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United States of America Patent
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Jan 28, 1997
Grant Date -
N/A
app pub date -
Oct 10, 1995
filing date -
Feb 10, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The method for measuring the tearing strength of fibers, especially of textile fibers, comprises the following steps: A) the fibers to be measured or part regions of such fibers are treated to form a single-layer planar fiber tuft (1); B) the fiber tuft (1) is clamped in the fiber plane (13) perpendicularly to the fiber direction along two parallel lines (18, 19) having a predetermined clearance; C) the cross-section of the class (12) of fibers clamped between the two lines (18, 19) is determined individually and summed to form the total cross-section; D) the fiber tuft (1) is pulled apart to tear by the application of a force in the fiber plane (13) in the direction of the arrow (14) between the two lines (18, 19); E) the tearing strength is determined from the tearing force occurring and the total cross-section determined.
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