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:
Dec. 05, 1978
Filed:
Apr. 04, 1977
Peter S Sorce, Tonawanda, NY (US);
Earl W Clifford, Getzville, NY (US);
The Aro Corporation, Bryan, OH (US);
Abstract
Apparatus for heat sealing a thermally-sensitive material to a substrate material includes a frame, and a pair of internally heated shafts mounted fast on the frame. A roller member is rotatably mounted on each shaft, and is arranged to be heated by the heating element within the shaft. The rollers are rotated in opposite angular directions so that an object interposed at the nip will be translated therebetween. The facing peripheral portions of each roller member have a sinusoidal cross-section, with the peaks of one roller member being aligned with the valleys of the other. The roller members are spaced from one another to provide a degree of frictional resistance with the materials to be bonded together. The cross-sectional configuration in the roller members serves to provide a plurality of ribbon-like seals between the materials, without propagating a bubble as such materials are passed between the roller members.