Method and apparatus for wrapping a plastic film around a load

Package making – Methods – Applying a partial cover

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

53441, 53556, 53587, 53 64, B65B 1104

Patent

active

050542630

ABSTRACT:
The problem involved in wrapping a stretched plastic film around a load by rotating the load and the plastic film feed roll is often that the film will not adapt well enough to the shape of the load, will not form an elastically tensioned package, and will not necessarily be by its stretch ratio and thickness sufficiently uniform and suitable for the product in question. In the present invention, a method has been developed for wrapping a stretched plastic film around the circumference of a load by rotating the load and the plastic film feed roll each about its axis in order to unwind the stretchable plastic film from the feed roll and to wrap the stretched plastic film around the circumference of the load and by braking the plastic film in order to stretch it between the braking point and the wrapping point. The advantages of the invention are based on the fact the braking power which induces the stretching of the plastic film is regulated on the basis of the circumferential speed of the load. In this manner it is possible to achieve completely simultaneous stretching and wrapping, wherein the contact point between the load and the plastic film constitutes the downstream end of the film-stretching distance.

REFERENCES:
patent: 3257086 (1966-06-01), Drenning
patent: 3281634 (1966-10-01), Studer
patent: 3759432 (1973-09-01), Hutzenlaub
patent: 4077179 (1978-03-01), Lancaster
patent: 4362001 (1982-12-01), Cockerham
patent: 4387552 (1983-06-01), Lancaster
patent: 4458467 (1984-07-01), Shulman
patent: 4503658 (1985-03-01), Mouser et al.
patent: 4590746 (1986-05-01), Humphrey
patent: 4844371 (1989-07-01), Tahara

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method and apparatus for wrapping a plastic film around a load does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for wrapping a plastic film around a load, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for wrapping a plastic film around a load will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-249722

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.