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:
Oct. 10, 1989
Filed:
Mar. 09, 1988
Gregory R Wyberg, Minneapolis, MN (US);
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Abstract
A gable-top container made from a scored blank of paperboard and the like includes at least one fillet permanently attached to the outside surface of at least one of the panels which form the spout. The fillet comprises a thin strip of stiff material constructed of unoriented polypropylene coated with a layer of adhesive. The strip is resistant to the carton-sealing process, and extends along a major portion of the panel length to transfer to .applied container-opening forces to the tip of the spout preventing buckling of the spout panels. In the preferred embodiment, the portion of the fillets on the adjoining panels about one another when the spout is in a closed condition. A secondary layer of adhesive having a lesser bonding force may overlay the abutting portions of the fillets to controllably seal opposing panels to each other at the particular desired bond strength.