Starting tail for film rolls

Details Starting tail for film rolls Starting tail for film rolls

1978-12-11

1980-12-23

Thibodeau, Paul J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Nonplanar uniform thickness material

428156, 428174, 428192, 428212, 428906, 428910, B32B 302, B32B 328

Patent

active

042411270

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:
patent: Re27104 (1971-03-01), Valyi
patent: 3365992 (1968-01-01), Dreher
patent: 3558580 (1971-01-01), Orser
patent: 3567552 (1971-03-01), Heuff et al.
patent: 3741850 (1973-06-01), Highfield
patent: 4064776 (1977-12-01), Walitalo et al.
patent: 4121004 (1978-10-01), Ehrlund

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