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. 10, 1987
Filed:
Jul. 25, 1986
Arnold Lipes, Montreal, CA;
George Soga, Duverway, CA;
Packaging Automation Machinery Co. Ltd., Montreal, CA;
Abstract
A plastic bag for retaining a content therein and wherein the bag has a gathered throat portion adjacent an end opening thereof, the gathered throat portion being formed by randomly disposed wall portions of the plastic material fused together by two or more rows of adjacent spaced apart fused zones of plastic material disposed about a plurality of needle holes. The apparatus comprises at least one set of opposed gathering jaw plates for gathering, in a random fashion, a circumferential portion of the plastic bag adjacent the end opening thereof to form a gathered throat portion. Two pressing plates are disposed on a respective side of the gathered throat portion and are each provided with two or more spaced apart rows of needle receiving bores disposed adjacent one another in differing planes. A needle support block of heat conductive material has needles secured thereto for conducting heat from the block. The block is connected for movement to and away from one of the pressing plates once the pressing plates have moved to a pressing position so that the needles will enter the bores of both pressing plates to puncture a press portion of the gathered throat portion of the bag to fuse plastic material adjacent randomly disposed wall portions of the plastic material in the areas of the penetrating needles and in adjacent spaced apart planes.