FLEXIBILITY OF FLAT DRIVE BELTS and REGULATOR TAPE

   Flexibility as determined by the beam flex test  
   Dymetrol flat drive belts are 2 to 3 times more flexible than oriented materials at -30°C

Dymetrol® belt compositions exhibit relatively low change in flex modulus over a wide temperature range compared to most plastics. Actual flexibility of  Dymetrol® belts is a  function of composition, as well as cross  section and perforation pattern. Flexibility is increased as the thickness and width are decreased.  Using a cantilever beam stiffness test, a 2000  series un-punched belt with a geometry of .60 in. wide by .070 in. thick and a load span of 2 inches will deflect 1 inch under a .95 lb force at 23°C(ASTM test D747).



Dymetrol® belt compositions exhibit relatively low change in flex modulus over a wide temperature range.

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Figure G illustrates relative flexibility vs belt  geometry using ASTM D747 as in the above example.

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Figure G illustrates relative flexibility vs belt  geometry using ASTM D747 as in the above example.

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Limousine rear divider window lift system

Push Pull Mechanism