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What are some common industry standards for the number of folding cycles in the test?

2023-07-31 15:30

The number of folding cycles specified in the folding endurance test can vary depending on the specific industry, application, and the type of material being tested. Here are some common industry standards for the number of folding cycles:

1. TAPPI T511: The Technical Association of the Pulp and Paper Industry (TAPPI) has established the TAPPI T511 standard, which specifies the folding endurance test method for paper and paperboard. It recommends conducting the test with 10,000 double folds for papers and 20,000 double folds for paperboards.

2. ISO 5626: The International Organization for Standardization (ISO) provides the ISO 5626 standard, which outlines the folding endurance test method for paper. It suggests a minimum of 8,000 double folds for paper samples.

3. ASTM D2176: The American Society for Testing and Materials (ASTM) has the ASTM D2176 standard, which covers the folding endurance test for paper. It recommends a minimum of 10,000 double folds for most papers.

It's important to note that these are just a few examples of industry standards, and there may be other specific standards or guidelines set by individual organizations or manufacturers based on their requirements and applications. When conducting the folding endurance test, it's essential to refer to the relevant industry standards or specific customer requirements to ensure consistency and comparability of test results.

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