Apparatus for forming starting tail for film rolls

Details Apparatus for forming starting tail for film rolls Apparatus for forming starting tail for film rolls

1979-09-17

1981-01-06

Goolkasian, John T.

Plastic article or earthenware shaping or treating: apparatus

Preform severing means

Serially arranged with preform reshaping means

4253021, 425297, 425296, 425289, 428906, 428910, 242 56R, 156 83, 156499, 83170, B65C 904, B32B 302, B26D 710, B29C 1714

Patent

active

042433665

ABSTRACT:
A method of affecting the tail end of a roll of plastic film to render it readily identifiable and easy to grasp and start without tearing the film web into strips. The tail end of the film is embossed on-line as it is separated and about to be wound up on a roll core. The method is accomplished by securing the tail end between a heated surface on the upstream side of a knife on a cut-off roll and a lifting and embossment mechanism to provide a wide embossment across the tail end of the film at about the time it is severed from the film stock. The method produces a novel puckered tail, particularly for highly oriented films where tension is relieved while the tail end is still heated.

REFERENCES:
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patent: 2870840 (1959-01-01), Kwitex
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patent: 3567552 (1971-03-01), Heuff et al.
patent: 3741850 (1973-06-01), Highfield et al.
patent: 4064776 (1977-12-01), Walitalo et al.
patent: 4121004 (1978-10-01), Ehrlund

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