Standard Test Method for Holding Strength of Prong-Ring Attached Snap Fasteners

Importancia y uso:

5.1 Both test methods are considered satisfactory for acceptance testing of commercial shipments of garments with prong-ring type snap fasteners.

5.1.1 In case of dispute arising from differences in reported test results when using this test method for acceptance of commercial shipment, the purchaser and the supplier should conduct comparative tests to determine if there is a statistical bias between their laboratories. Competent statistical assistance is recommended for the investigation of bias. As a minimum, the two parties should take a group of test specimens that are as homogeneous as possible and that are from a lot of material of the type in question. The test specimens should then be randomly assigned in equal numbers to each laboratory for testing. The average results from the two laboratories should be compared using appropriate statistical analysis and an acceptable probability level chosen by the parties before testing is begun. If a bias is found, either the cause must be determined and corrected, or the purchaser and supplier must agree to interpret future test results with consideration to the known bias.

5.2 Comparison of results from test equipment operating on different principles is not recommended. In cases of conflict between the test results achieved with manual test equipment (Option 2) and motorized CRE (constant rate of extension) tensile testing machine (Option 1), the results from the motorized equipment shall take precedence.

5.3 This test method may be used to determine the compatibility of prong-ring type snap fasteners and fabrics for use in apparel. In which case, the fasteners are attached to the fabric in the manner in which they will be used and the combined units tested. See Annex A1.

Subcomité:

D13.54

Referida por:

D2050-23

Volúmen:

07.02

Número ICS:

21.060.99 (Other fasteners)

Palabras clave:

fabric; fastener; prong-ring; fastener; snap; garments; strength; holding;