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D2053-99 – Standard Test Method Technical Guide
📐 Overview and Scope of D2053-99
This standard, D2053-99 (Reapproved 2022), is under the jurisdiction of ASTM Committee D13 on Textiles and Subcommittee D13.54 on Subassemblies. It specifies a test method for determining the alteration in shade of the textile portion of zippers when exposed to light, applicable to all materials of manufacture. The values stated in SI units are considered standard, with values in parentheses provided for informational purposes. The standard also outlines the user’s responsibility for safety, health, and environmental practices, and it was developed in accordance with internationally recognized principles.
⚙️ Test Procedure and Equipment
A specimen consisting of zipper tape and chain is exposed to continuous artificial light for a predetermined period. The exposure conditions must conform to AATCC Test Method 16 for Colorfastness to Light. The fading of the specimen is evaluated and rated using the AATCC Gray Scale for Color Change. Definitions for zipper terms are provided in ASTM D2050, and other textile terminology is covered in ASTM D123. The test method references several related standards, including D2051 for durability of finish and D2052 for colorfastness to drycleaning.
| 📏 Standard | 📐 Description |
|---|---|
| D123 | Terminology Relating to Textiles |
| D2050 | Terminology Relating to Subassemblies |
| AATCC Test Method 16 | Colorfastness to Light |
| AATCC Gray Scale for Color Change | Evaluation of Color Change |
📊 Evaluation and Significance
This test method is crucial for determining if color loss due to light exposure is satisfactory for the intended end-use of zippers. It is widely accepted for acceptance testing of commercial shipments. In cases of significant differences between laboratory results, comparative tests should be performed using statistically homogeneous samples and random assignment. Competent statistical assistance is recommended to identify any bias. The method adheres to international standards for development and use.
💡 Technical Note: Ensure the artificial light source is calibrated according to AATCC Test Method 16 to maintain consistent and reproducible exposure levels.
✅ Compliance Note: This test method is applicable to all zipper types, regardless of the materials used in their textile portions, ensuring broad utility in quality control.
❓ Frequently Asked Questions
🔍 What is the primary focus of D2053-99?
It focuses on assessing the colorfastness of the textile component of zippers to light exposure.
💡 How is the specimen prepared for testing?
A specimen of zipper tape and chain is exposed to continuous artificial light without any specific preparation beyond ensuring it represents the zipper properly.
⚡ Which equipment is used for evaluation?
The AATCC Gray Scale for Color Change is used to rate the degree of fading after exposure.
📌 Why is this test method significant?
It helps determine if the zipper’s color stability is adequate for its intended application, aiding in quality assurance.