ASTM (American Society for Testing and Materials) is an organization that develops and publishes various standards, including testing standards for zipper products. ASTM zipper testing covers multiple performance aspects to evaluate the quality, performance and durability of zippers. Here are some common properties that ASTM zipper testing may involve:
1. Tensile Strength:
Pull strength testing is used to evaluate the strength and durability of zippers. During the test, the zipper sample is subjected to gradually increasing tension until failure occurs. This evaluates the maximum load capacity and durability of the zipper.
2. Slider Puller Strength:
The sliding performance test is used to evaluate the sliding force and operation performance of the zipper. During the test, the slider of the zipper will be subjected to a certain pulling force to check whether the sliding force meets the requirements and ensure the smoothness of the zipper during opening and closing operations.
3. Opening and closing cycle (Cycle Test):
The opening and closing cycle test is used to evaluate the durability and service life of zippers. Through repeated opening and closing operations, test whether the zipper can still work normally after a certain number of opening and closing cycles, and there is no breakage, deformation or other damage.
4. Corrosion Resistance:
The corrosion resistance test is used to evaluate the corrosion resistance of zippers. Zipper samples may be exposed to salt spray, heat and humidity, or other corrosive environments to examine their surface for corrosion and to evaluate their durability and service life.
The flame resistance test is used to evaluate the flame resistance performance of zippers. Zipper samples may be exposed to flames to check their burning speed, flame spread and self-extinguishing properties to ensure the safety of zippers in fire situations.
6. Tear Strength:
The tear resistance test is used to evaluate the tear resistance of zippers. Zipper samples may be subjected to certain tearing forces to check their ability to resist tearing and to evaluate their durability and service life.
7. Abrasion Resistance:
Abrasion resistance testing is used to evaluate the abrasion resistance of zippers. Zipper samples may be subjected to certain abrasion forces to check the surface for wear, degree of wear and durability.
In addition to the performance tests listed above, ASTM's zipper test standards may also include other aspects of evaluation, such as weather resistance, light resistance, chemical resistance, etc. Specific test methods and requirements can be found in relevant standards issued by ASTM, such as ASTM D2061, ASTM D2062, etc.
Note that different ASTM standards may apply to different types of zipper products, such as plastic zippers, metal zippers, water-blocking zippers, etc. Therefore, when performing ASTM zipper testing, the applicable standard should be selected according to the specific product type and application field, and the test methods and requirements in the standard should be followed.