The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 03, 1987
Filed:
Aug. 11, 1986
Aaron Kaufman, Boynton Beach, FL (US);
Other;
Abstract
An elongate apparatus for forming a plurality of plastic bags or pouches from a continuous length of thermoplastic film, in which the moving film is folded to form a double thickness which is open inwardly from one edge, and is folded inwardly from said one edge to form a flap ply which is treated at a plurality of aligned workstations to form physical bag features, such as to form spaced hanger-receiving slits, insert spaced hangers, form a longitudinal hanger-confining heat seam, fold out the flap ply, apply spaced adhesive closures, form V-cuts in the flap ply and fold back the flap ply to overlie the double ply prior to forming heat-seal transverse cuts which segregate the web into a plurality of plastic bags or pouches. A preferred embodiment comprises mounting each of the workstations on a carriage member which is normally fixed relative to the frame of the apparatus but is releasable for movement along the direction of the web, while the web is moving, in order to reposition the workstations simultaneously relative to the locations of the heat seal transverse cuts whenever the moving web creeps or otherwise loses alignment and causes the physical bag features to become off-center relative to the transverse cuts.