Folding Endurance Testing Machine for the Paper & Packaging Industry

DESCRIPTION / TECHNICAL SPECIFICATIONS

In the paper and packaging industry, the strength of a material is not just measured by its resistance to tear or tension, but also by its ability to withstand repeated folding without breaking. This property, known as folding endurance, is a critical indicator of real-world quality and performance—from the flap of a frequently opened carton to a map that is folded time and again. We present the industry-standard MIT Folding Endurance Tester, an instrument designed to provide a reliable, quantitative measure of this fundamental resistance.

This machine operates using the widely recognized MIT method, where a standard-sized specimen is clamped and placed under a consistent tension using a hang-type weight method. The specimen is then repeatedly folded back and forth through an extreme angle (+135° to -135°) at a standard speed of 175 cycles per minute. A high-precision LCD digital counter accurately records the number of folds completed before the specimen ruptures. This number is the folding endurance value—invaluable data that directly correlates to the material's durability and service life.

Every aspect of this machine is engineered to deliver consistent and replicable results, making it an indispensable tool in a quality control laboratory environment. The use of a hanging load ensures that every sample is tested under the exact same tension conditions, while the controlled folding speed eliminates variables that could affect the outcome. With a robust and stable construction, this device guarantees reliable operation for routine testing, giving you data you can trust to make critical decisions about material quality and production processes.

This tester is an essential device for paper and paperboard manufacturers, the printing industry, and packaging converters. It is vital for assuring raw material quality, optimizing pulp composition, validating coating strength, and guaranteeing that final products like folding cartons, book covers, and other valuable papers will perform as expected without premature failure at the crease. Elevate your quality standards and provide your customers with an assurance of durability backed by accurate data from this fundamental testing instrument.