Patent ID: 9597851
Date: 2017-03-21
CPC Classifications: B31B,B65B,B65D

Claim:
1. A method for forming a base-type carton from a carton blank of the type having a rectangular base having a depth from front to back and a width from left to right, said base being circumscribed by rear wall fold line, right wall fold line, front wall fold line and left wall fold line; a rear wall panel connected along a lower edge to the base at the rear wall fold line and having a rear wall width relatively greater than the width of the base and connected along an upper edge to a top panel along an upper edge fold line; a right wall panel connected along a lower edge to the base at the right wall fold line; a front wall panel connected along a lower edge to the base at the front wall fold line; a left wall panel connected along a lower edge to the base at the left wall fold line; left and right rear outfold score lines extending outward respectively from left and right ends of the rear wall fold line; a first inward fold score line extending outward from the rear end of the right wall fold line defining a right side rear edge portion between said first inward fold score line and the right rear outfold score line; and a second inward fold score line extending outward from the rear end of the left wall fold line defining a left side rear edge portion between said second inward fold score line and the left rear outfold score line; so that the right side rear edge portion and left side rear edge portion extend outward beyond the rear wall width, whereby the junction of the rear wall panel and the right side rear edge portion and left side rear edge portion form rear alignment notches, by utilizing a folding aid of the type having a rectangular base surface with rear, right, front and left edges; a rear, right, front, and left folding guide mounted along each respective edge of the rectangular base surface wherein each folding guide has an upper introductory segment angled outward from the rectangular base surface and a lower more vertical segment; and a plurality of upstanding registers positioned outward of the introductory segments of the folding guides proximate a plurality of the corners of said base surface, comprising the steps of: (a) positioning the alignment notches of the carton blank with the registers of the folding aid so that the rectangular base of the carton is positioned over the rectangular base surface of the folding aid; (b) applying downward pressure on the rectangular base of the carton to bring it toward the rectangular base surface of the folding aid such that the folding guides cause: (c) folding the top panel forward along the upper edge fold line of the rear wall over the rectangular base of the carton to the front wall.