Patent ID: 8051629
Filing Date: 2011-11-08
Classification: B65B

Abstract:
1. Method for shrink wrapping comprising: providing a group of articles wrapped with a tube of film having a lap seam extending under the group of articles between first and second open ends and beyond the group of articles; moving the tube wrapped group of articles in a movement direction perpendicular to the lap seam, over a top surface of a heated air plenum and through a film shrinking area extending along the movement direction; and providing heated air in the heated air plenum beneath the tube wrapped group of articles, with providing heated air comprising flowing air through apertures in the top surface of the heated air plenum below the tube wrapped group of articles and into the film shrinking area to shrink the tube of film onto the group of articles to form a package, with providing the heated air further comprising flowing air from beneath the tube wrapped group of articles and from the heated air plenum into a first duct having an opening, with the opening extending continuously along the movement direction and spaced above the top surface and the lap seam while the tube of film is being shrunk to form the package.