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ASTM D4120 2007 Edition, January 1, 2007
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Standard Test Method for Fiber Cohesion in Roving, Sliver, and Top in Dynamic Tests
Includes all amendments and changes through Reapproval Notice , 2012
Page Count:3
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This test method describes the measurement of fiber cohesion as the dynamic cohesive force required to maintain drafting in rovings, slivers or tops when they are subjected to stress induced by passing between pairs of drafting rolls of different surface speeds. The cohesive force is converted to cohesive tenacity based on the linear density of the material.

NOTE 1—For static tests refer to Test Method D2612.

This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.