What is the standard for button pull test?

 

1. ISO 5269-2: This standard, titled "Textile machinery and accessories – Button and button-holing machines – Part 2: Button pull test," specifies the method for determining the pull-off strength of buttons and snap fasteners on textile garments. This standard is widely referenced in the textile industry and is applicable to buttons used on garments, including clothing, footwear, and accessories.

 

ISO 5269-2 describes the equipment and test methods to perform a button pull test. The general procedure involves attaching a button or snap fastener to a textile sample and subjecting it to a pull force until the button is completely detached. The test measures the force required to separate the button from the fabric, providing an indication of the button's pull-off strength.

 

This standard provides detailed instructions on specimen preparation, testing equipment setup, and data recording. It also specifies the required dimensions and tolerances for the test button, sample fabric, and related fixtures. ISO 5269-2 includes information on the calculation of results, presentation of test data, and reporting requirements.

 

2. ASTM F963: This standard, titled "Standard Consumer Safety Specification for Toy Safety," is developed by ASTM International and covers safety requirements for toys intended for children. While not specifically focused on button pull testing, ASTM F963 includes a requirement related to the pull strength of certain toy components, including buttons or attachments that can be pulled off.

 

According to ASTM F963, toys intended for children under three years of age should not have any small parts or components that can be detached with a force of less than 4.45 newtons (or 1 pound-force). This requirement aims to prevent potential choking hazards for young children.

 

ASTM F963 does not provide a specific test method for button pull testing. Instead, it sets a requirement for the minimum pull strength of small components. However, manufacturers and testing laboratories typically follow relevant industry standards, product-specific requirements, or internal quality control procedures to conduct button pull tests in compliance with ASTM F963.

 

It is important to note that these standards are just two examples commonly referenced in button pull testing. Different industries and applications may have their own specific requirements or regulations. Manufacturers and testing laboratories should consult industry-specific standards, regulatory bodies, or customer specifications to determine the appropriate test standards, procedures, and acceptance criteria for button pull testing.

 

In conclusion, the selection of the standard for button pull tests depends on the industry, product, and application. ISO 5269-2 is widely used in the textile industry for evaluating the pull strength of buttons on garments, while ASTM F963 provides safety requirements for toys and includes a requirement for the pull strength of small components. Manufacturers and testing laboratories should refer to relevant standards, regulations, and customer specifications to ensure compliance with the appropriate button pull test requirements.