Apparatus and process for forming center unwindable rolls of per

Winding – tensioning – or guiding – Coil holder or support – Spool or core

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242 685, 242 72B, 242 74, B65H 1810

Patent

active

047719621

ABSTRACT:
An apparatus and a method are disclosed for winding strips or tubes of plastic film into center-unwindable rolls having a diameter of at least about 3 inches and for unloading the wound rolls without telescoping thereof. Bare expandable winding shafts are provided which comprise a fixed vacuum leaf and a plurality of movable leaves controlled by an elongated air bladder, the contracted diameter being at least about one-quarter inch less than the expanded diameter. Each leaf also has an outer surface having a selected slipperiness toward the film surface. g,31

REFERENCES:
patent: 2779547 (1957-01-01), Roberts et al.
patent: 2916226 (1959-12-01), McGraw, Jr.
patent: 3053467 (1962-09-01), Gidge
patent: 3297155 (1967-01-01), Gattenby, Jr. et al.
patent: 3527424 (1970-09-01), Goldman
patent: 3552670 (1971-01-01), Herman
patent: 3743199 (1973-07-01), Karr et al.
patent: 3840197 (1974-10-01), Rodach
patent: 3863857 (1975-02-01), Smith
patent: 4030681 (1977-06-01), Schott, Jr.
patent: 4327877 (1982-05-01), Perini
patent: 4391415 (1983-07-01), Hollier, Jr.

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