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:
Mar. 10, 1992
Filed:
Nov. 29, 1990
Adam J Dworak, Chicago, IL (US);
Charles E Cloud, Northbrook, IL (US);
Cloud Corporation, Des Plaines, IL (US);
Abstract
A high speed method of manufacture of filled polyethylene pouches from polyethylene film comprising the steps of folding the film and causing it to move in folded flat form transversely sealing the film at longitudinally spaced intervals forming a continuous length of open edged unfilled polyethylene pouches, perforating the strip or web forming transversely extending longitudinally spaced lines of perforations between the pouches, exerting a vacuum upon the strip or web holding down sides of the unfilled pouches to stabilize the held sides thereof, blowing air at the open edged unfilled polyethylene pouches separating unheld sides of the pouches away from the vacuum held sides of the pouches, thus consecutively opening the pouches preparatory for filling the pouches, filling the pouches by moving articles to be packaged into the opened unfilled ends of the pouches, sealing the open ends of the filled pouches, and severing the pouches from the continuous strip for cartoning.