What are some common types of zipper testers and their features

Zipper strength tester: This tester measures the strength of zippers by subjecting them to a specific amount of tension. It is used to determine the maximum amount of force a zipper can withstand before it breaks.

Zipper durability tester: This tester simulates the wear and tear that zippers undergo during regular use. It is used to test the durability of zippers by subjecting them to repeated opening and closing cycles.

Zipper water resistance tester: This tester measures the water resistance of zippers by subjecting them to a specific amount of water pressure. It is used to determine whether a zipper can withstand exposure to water without leaking.

Zipper color fastness tester: This tester measures the color fastness of zippers by subjecting them to various environmental conditions such as light, heat, and humidity. It is used to determine whether the color of a zipper will fade or change over time.

Zipper pull strength tester: This tester measures the strength of the zipper pull by subjecting it to a specific amount of force. It is used to determine whether the zipper pull can withstand the force needed to open and close the zipper.