Machine for winding of pre-stretched film reels
AssigneeNo.El. S.R.L.
InventorRoberto Pellengo Gatti
Life of this patent
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Abstract
A machine for producing coils of prestretched extendible film has a prestretching unit (10) for prestretching the film (F) and a winding unit (100) for winding the film in a coil provided with a series of rollers around which the advancing film winds partially; the winding unit comprises a winding roller (104) in pressing contact against the coil (R) of the prestretched film in winding progress; to obtain coils of constant diameter and high winding quality the final contact position is varied of the winding roller (104) against the coil (R) according to the length of the wound film and according to the required diameter of coil.
Claims9
Machine for producing coils of prestretched extendible film comprising a prestretching unit for prestretching a film and a winding unit for winding the film in a coil, said prestretching unit being provided with a series of prestretching rollers around which the film is prestretched, wherein the winding unit comprises a winding roller in pressing contact against a coil of the prestretched film in winding progress along length, said coil being provided with a required diameter, wherein said machine comprises
- an actuator acting on the winding roller to achieve a pressing contact against the coil;
- and
- an abutting member acting in an opposite direction to the actuator for varying a final contact position of the winding roller against the coil according to the length of the film and according to the required diameter of the coil.
Dependencies are inferred from the claim text.