Machine-direction orientation (MDO) machine

Machine-direction orientation (MDO) film is made where, a polymer film is heated to a temperature slightly below its melting point and stretched in a particular orientation. The film can be cast on an MDO machine, or this step introduced as the last stage in the manufacture of blown films.
The first step in the MDO process is preheating, where a film is fed into the stretching unit and evenly warmed to the desired temperature.
This is followed by orientation.Next, during the annealing stage, the film’s new properties are locked in and made permanent.Finally it is cooled.
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