Overview
EN ISO 10748:2011, titled Footwear - Test method for slide fasteners - Slider locking strength (ISO 10748:2011), is an internationally recognized standard developed by CEN in collaboration with ISO Technical Committee ISO/TC 216. This standard defines a precise test method to determine the locking strength of slide fastener sliders specifically designed for footwear applications. The method applies to all types of slide fasteners equipped with a slider locking device, ensuring consistent quality and functionality in footwear products.
Key Topics
- Scope and Applicability: The standard focuses on the slider locking strength-how effectively the slider remains locked under tension-critical for slide fasteners used in footwear. It is relevant for manufacturers, quality control labs, and testing institutions assessing fasteners with locking devices.
- Test Principle: It involves applying a tensile force at 180° to the locking device until the slider fails or slips. This simulates real-world stresses to verify the slider’s locking efficacy.
- Apparatus and Requirements: Testing utilizes a calibrated tensile testing machine capable of applying up to 2 kN force with an accuracy better than 2%, jaw separation rate controlled at (100 ± 10) mm/min, and the capacity to capture maximum force during testing.
- Specimen Preparation: At least three slide fasteners are conditioned under standardized environmental conditions (23 °C and 50% RH for 24 hours) before testing to ensure reproducibility and consistency.
- Procedure Details: The fastener is secured with the slider locked approximately 30 mm from the top stops, and force is applied until failure occurs. Results include the maximum force endured and failure mode classification-either locking mechanism slip or specimen failure.
- Reporting Requirements: Comprehensive test reports must cite the standard, describe the slide fasteners tested, provide failure statistics, and note any deviations from the method.
Applications
EN ISO 10748:2011 is critical in multiple footwear industry scenarios:
- Quality Assurance: Ensures the durability and reliability of slide fasteners in footwear manufacturing by providing measurable locking strength criteria.
- Product Development: Assists designers and engineers in selecting or designing slide fasteners that meet performance expectations under stress conditions.
- Regulatory Compliance: Supports manufacturers in conforming with international footwear component standards, facilitating market access and customer confidence.
- Material Testing Laboratories: Offers a standardized testing methodology for consistent evaluation across diverse fastener types with slider locking mechanisms.
Related Standards
- ISO 7500-1: Metallic materials - Verification of static uniaxial testing machines - Verifies and calibrates tensile testing equipment critical for executing EN ISO 10748 tests.
- ISO 19952: Footwear - Vocabulary - Defines terms related to footwear components, including slide fasteners and related elements, ensuring clarity in communication and documentation.
- ISO 17709: Footwear - Sampling location, preparation, and conditioning - Guides sample preparation for reliable and repeatable testing.
- ISO 18454: Footwear - Standard atmospheres for conditioning and testing - Establishes standard environmental conditions essential for specimen conditioning in testing procedures.
By adhering to EN ISO 10748:2011, footwear manufacturers and testing bodies ensure that slide fasteners used in various footwear products meet stringent performance and safety benchmarks, enhancing product longevity and user satisfaction. This standard is indispensable for anyone involved in the design, manufacture, or testing of footwear slide fasteners incorporating slider locking devices.
