MIT folding endurance

Figure 1. Flex crack test for film using the MIT Folding Endurance Tester...

Folding Endurance Measurements. The MIT folding endurance test was run at 1/2 kg load in the machine direction, according to TAPPI T511-su-69. 

The cured sheets were conditioned at 23 °C and 50% relative humidity. MIT folding endurance was run on 1.5-cm wide strips at 0.5 kg load. Tensile was taken on the same width strip. Eight strips were run machine direction and eight cross direction. As mentioned by Raff et al. (4,5), standard deviation and coefficient of variation were increased greatly in the treated plasticized paper for example untreated Foldur Kraft gave ... 

If folding is of paramount importance, the MIT folding endurance test is of great value. In this test, the test strip is held vertically under tension. The upper jaw that holds the paper is fixed but the lower jaw swings like a pendulum, with the centre of rotation being the point where the paper enters the jaws. The tips of the jaws are curved in a defined manner. A counter measures the number of folds required before the paper breaks. A strong paper will endure over... 

Table 11.2 Comparison of Daikin Modified PTFE and Standard PTFE Compounds in the MIT Folding Endurance Test, According to ASTM D2178 [4]...

Figure 11.19 MIT folding endurance at room temperature versus the polymer melt flow rate of Asahi Glass Fluon ETFE [12],...

Figure 11.29 Ball-and-stick three-dimensional representation of fluorinated ethylene propylene (FEP). Table 11.8 MIT Fold Endurance of Chemours Teflon FEP Resins [14]...

Book ASTM Stand., Folding Endurance of Paper by the MIT Tester, ... 

Folding Endurance Tests. Measurements were performed on a Tinius-Olsen model no. 2 instrument (also known as a folding endurance tester (MIT)) according to ASTM method D-2176-63T on samples cut in the same machine direction. 

Folding endurance ISO 5626 1993 describes four methods, i.e. Kohler Molin, Lhomary, MIT and Schopper. These various instruments fold the test piece back and forth through a specified angle until rupture occurs. Applies to all forms of paper and board, but there may be different instruments for different boards. 

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