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:
Apr. 05, 1988
Filed:
Apr. 26, 1982
Bruce E Metz, Wilmington, DE (US);
Athena Controls Inc., Plymouth Meeting, PA (US);
Abstract
The present invention is used to heat seal seams, and the like, of item holding means such as plastic bags holding loose fill product like beans, hard candy, pretzels, potato chips, etc. The heating station of the present invention has at least two independently controlled heating positions in each half of a pair of jaws and each heating position is heat insulated from the other and each respectively can provide different amounts of heat to material coming in contact therewith. Accordingly, the bonded areas of item holding means can be manipulated to control local package characteristics, i.e., sealed to have a stronger bond strength at one location that at another location, adjust tear properties to suit marketing methods (such as hole punched top seals) and to control seal integrity.