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. 07, 1978
Filed:
Dec. 08, 1976
Josef J Buschor, San Jose, CA (US);
Nolex Corporation, Los Angeles, CA (US);
Abstract
Apparatus for forming a sealable carton for liquids accepts from a supply station a T-shaped blank of coated sheet material that is impervious to the fluid that the carton to be formed from the blank is to contain. The blank is pre-scored to delineate the side walls and ends of the carton and is further pre-scored to delineate tabs by means of which the sealing of the carton is to be effected. The apparatus for forming the carton includes a plurality of carton blank carriers mounted on a conveyor. As the conveyor carries the blank past a first operational station the side seam sealing tab is flexed forwardly and away from the mounting plate preparatory to the formation of a side seam. Following the positioning of the mandrel the blank is wrapped around the mandrel, two of the three exposed side panels of the blank being brought into surface contact with two of the faces of the mandrel and a third being brought into a position of angular confrontation with a face of the mandrel in which position its free edge spacedly confronts the side seam sealing tab that has been flexed. The carton blank carrier next brings the blank into registry with a source of heated air directed between the flexed side seam sealing tab and the inner surface of the side panel that is confronting the sealing tab. The sealing tabs at the end of the tube that will be closed to form the bottom of the carton are brought into association with a system of rollers which flexes the three sealing tabs toward positions where they may be engaged by the closure panel of the tube that has been left exposed by the mandrel. The carton blank carrier next transports the carton past a source of heat which is directed on the outer surfaces of the sealing tabs and the inner surface of the closure panel that has been brought into proximity to the sealing tabs. Following completion of the closure of one end of the carton the mandrel is withdrawn and the open-ended carton is released from the blank carrier for storing or for delivery of the carton to carton filling equipment.