ASTM D2322-14(2023) PDF

Overview

ASTM D2322-14(2023): Standard Test Method for Resistance of Shoe Upper Leather to Artificial Perspiration is an international standard developed by ASTM to assess the durability of shoe upper leather when exposed to artificial perspiration. The test provides a reliable indication of how shoe upper leather will perform under conditions simulating actual wear, specifically focusing on grain cracking and area loss as primary criteria for deterioration. This method is critical for manufacturers, laboratories, and quality control teams seeking to ensure the performance and longevity of leather used in footwear.

Key Topics

• Test Scope: The method outlines procedures to determine the effect of artificial perspiration on shoe upper leather, excluding wet blue leather.
• Deterioration Criteria: Evaluates leather resistance using two criteria:
  • Grain crack strength (measured using the Mullen Tester)
  • Area loss after exposure to artificial perspiration
• Test Process:
  • Specimens are conditioned, then one is exposed to a solution simulating human sweat
  • The leather's resistance to cracking and dimensional stability are compared before and after exposure
• Chemical Simulation: Artificial perspiration is formulated to mimic sweat's chemical impact on leather, including components such as sodium chloride and urea at specific concentrations and a set pH.
• Measurement Units: Results are primarily reported in inch-pound units, with SI conversions provided for reference.
• Safety and Responsibility: Users must ensure proper safety, health, and environmental protocols when performing the test.

Applications

ASTM D2322-14(2023) delivers practical value across the leather and footwear industries by:

• Quality Assurance: Assisting manufacturers in verifying the durability and resistance of shoe upper leather to perspiration, thereby improving product quality and user satisfaction.
• Material Development: Guiding research and development teams in formulating better leather treatments or finishes to enhance resistance to sweat-induced damage.
• Regulatory Compliance: Supporting compliance with international trade and quality standards, helping companies meet both customer and regulatory expectations.
• Comparative Testing: Allowing brands and suppliers to compare different leathers or treatments under standardized conditions, leading to informed material selection.
• Performance Benchmarking: Establishing benchmarks for acceptable levels of grain crack resistance and dimensional stability in footwear products.

Related Standards

For comprehensive evaluation and assurance, ASTM D2322-14(2023) is often used alongside:

• ASTM D2210 - Test Method for Grain Crack and Extension of Leather (used to measure crack strength in this method)
• ASTM D1610 - Practice for Conditioning Leather and Leather Products for Testing (conditioning procedures)
• ASTM D2813 - Practice for Sampling Leather for Physical and Chemical Tests

These referenced standards work together to provide a robust framework for leather testing and quality control in the footwear supply chain.

Keywords: shoe upper leather, artificial perspiration, ASTM D2322, grain crack strength, area loss, leather testing, footwear quality, leather durability, standard test method, product compliance