Mobile film stretching unit
AssigneeComerio Ercole, S.p.A.
InventorRinaldo I. Comerio
Life of this patent
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Abstract
A film stretching unit movably positioned adjacent to an existing calender installation is described which includes a plurality of strecthing rollers having internal rotary joints for circulating a heating fluid therethrough. Alternate rollers are movable vertically without needing to change their rotational speed in order to easily thread the film through the stretching rollers.
Claims12
In a take-off unit positionable adjacent to the final calender roll of a calender installation for processing plastic film and including a bed of stretching rollers for applying stretching forces to said plastic film, the improvement comprising means connected to alternate rollers of said bed of rollers for moving said alternate rollers vertically in unison while continuously rotating the moving rollers.
Dependencies are inferred from the claim text.