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- Standard / ISO-9073-3
ISO 9073-3
ISO 9073-3
ISO 9073-3 is an international standard developed by ISO/TC 38 that specifies a test method for the determination of the breaking force and elongation of nonwovens using a strip method in a conditioned or wet state, describing two procedures—Option A with a test specimen width of 25 mm and Option B with a test specimen width of 50 mm. Widely adopted across hygiene, medical, filtration, geotextile, and technical nonwoven manufacturing sectors, this standard ensures material tensile performance is reliably quantified. Presto's high-accuracy tensile strength testers provide help to the manufacturers for evaluation under laboratory-controlled conditions as per the ISO 9073-3 standard.
Significance
A test specimen of specified dimensions is stretched at a controlled rate until it breaks, and the maximum value of the force, the elongation at the maximum value of the force, and, if needed, the rupture value of the force and the elongation at rupture are recorded, either from machine scales or dials, or on an autographic recording chart, or through the use of a computer interface. These measurements can help manufacturers to evaluate the nonwovens' structural integrity, compare batch-to-batch consistency, verify material formulation, or ensure that the range of actual mechanical performance is above a set targeted value across a variety of end-use applications. Scope The methods that use constant rate of specimen extension (CRE) tensile testers are presented, and constant rate of loading (CRL) testers are included for information, although these are still in use and may be used by agreement. Test specimens are cut in both machine direction and cross-machine direction, with five specimens tested from each direction per laboratory sample. The standard applies to nonwoven fabric manufacturers, textile testing laboratories, and quality inspection bodies requiring standardized tensile strength testing for production control, material qualification, and regulatory compliance.