Roller stretch pass through stretching apparatus and process

Details Roller stretch pass through stretching apparatus and process Roller stretch pass through stretching apparatus and process

1980-10-23

1983-11-08

Sipos, John

Package making

Methods

Applying a partial cover

53441, 53553, 53556, 53586, B65B 1108, B65B 1304

Patent

active

044134630

ABSTRACT:
A pass through apparatus and process for wrapping a web of stretched material around a conveyor transported load. The pass through apparatus has a film supply assembly on opposite sides of the load, each of the assemblies comprising a film dispenser and a powered roller mechanism which takes film from the film dispenser and pre-stretches it in the powered roller mechanism prior to the application of the film around the load. Once the load passes a sensing station, it is stopped and the clamping jaws draw the tensioned film around the load and clamp together short sections of film which have not been pre-stretched by the roller mechanisms. The film is then relaxed in the sealing area and is sealed in an untensioned un-pre-stretched state. The sealed webs are then severed allowing the wrapped load to be carried away by the conveyor with the film wrap slowly recovering its original configuration increasing the holding force of the wrap on the load.

REFERENCES:
patent: 2597041 (1952-05-01), Stokes
patent: 2757495 (1956-08-01), Reichel
patent: 2854697 (1958-10-01), Ryan
patent: 2995779 (1961-08-01), Winter
patent: 3048895 (1962-08-01), Bottomley
patent: 3052917 (1962-09-01), Horn
patent: 3052924 (1962-09-01), Ezrin et al.
patent: 3068528 (1962-12-01), Owens
patent: 3097467 (1963-07-01), Langdon
patent: 3104937 (1963-09-01), Wyckoff et al.
patent: 3351697 (1967-11-01), Hufnagel et al.
patent: 3478142 (1969-11-01), Greene
patent: 3589091 (1971-06-01), Cloud
patent: 3596434 (1971-08-01), Zelnick
patent: 3608056 (1971-09-01), Nelson
patent: 3667664 (1972-06-01), Schroeder
patent: 3672116 (1972-06-01), Ingmarson
patent: 3734994 (1973-05-01), Blecha
patent: 3786127 (1974-01-01), Peet et al.
patent: 3796785 (1974-03-01), Rest et al.
patent: 3807004 (1974-04-01), Anderson
patent: 3816886 (1974-06-01), Van Cappellen
patent: 3843761 (1974-10-01), Bierenbaum et al.
patent: 3884748 (1975-05-01), Anderson et al.
patent: 3896604 (1975-07-01), Marantz
patent: 3905533 (1975-09-01), Corse
patent: 3933569 (1976-01-01), Grasvoll
patent: 3990215 (1976-11-01), Elsner
patent: 4014155 (1977-03-01), Izawa et al.
patent: 4017227 (1977-04-01), Schmidt
patent: 4069643 (1978-01-01), Young
patent: 4076785 (1978-02-01), Schmidt
patent: 4079565 (1978-03-01), Lancaster

Affiliated with

Also associated with

Rating

Roller stretch pass through stretching apparatus and process does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Roller stretch pass through stretching apparatus and process, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Roller stretch pass through stretching apparatus and process will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2002174