Due to this unique viscosity/shear rate dependency, normal melt index testing (done at shear rates as low as 50 1/sec) will not reflect how the TPE will process at higher shear rates. Shear rates during extrusion processing are usually in the hundreds of reciprocal seconds and shear rates during injection molding may go as high as 11,000 1/sec.

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Three common ways this can be done are 1) in a way that creates a woven structure, 2) by placing the fiber fabric into a mold that is injected with resin, or 3) by pultrusion, where the fibers are pulled through resin and then shaped and cured in a heated die.

Table 1 illustrates some common GLS Materials, their supplied hardness, and the relationship between hardness and thickness.

To convert cubic inches to cubic centimeters, the conversion factor is 16.4 (in^3 x 16.4 = cm ^3 and 2.54 in = 1 cm).