Octagon Process Technology of Wurzburg, Germany, said its VenPad does noncontact measurement of the outside of a blown film bubble.
Unlike other noncontact sensors, VenPad maintains a constant and very small distance between itself and the bubble, ensuring exact measuring conditions. Air flows at high speed between the film and the sensor, creating a partial vacuum to generate an air cushion of constant thickness.
VenPad is also suited for single-layer films and coextruded films.
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