PREFORMED BAG-IN-A-BOX CONTAINER
First Claim
1. A method of forming a semi-finished corrugated shipping container having an integrally contained liquid impermeable bag which comprises providing a supply of flat container blanks, the blanks having face panels, end panels, and a narrow manufacturers joint strip adjacent one end of the blank, the blanks having top and bottom closure flaps and top-to-bottom score lines between the face and end panels and along the manufacturers joint strip, each end panel further having a centered top-to bottom blind score line, the closure flaps having outer edges oriented transversely to the score lines, providing a supply of liquid impermeable bags, the bags having a longitudinal axis, the bags further having a sealed edge and an open edge, the bags being longer than the distance between the outer edges of the top and bottom closure flaps, applying an adhesive to the container blanks in the area of the face and end panels;
- placing a bag upon the adhesive treated container blanks, the longitudinal axis of the bags being parallel to the score lines so that the sealed edge of the bags is located generally adjacent the outer edge of the bottom closure flaps, and folding the panels along the blind score lines to enclose the bag and bond it to the container blank.
2 Assignments
0 Petitions
Accused Products
Abstract
A shipping container having an internal plastic bag is described, as is the method of forming the container A flat container blank if first formed This differs from a conventional blank only in that it has blind score lines centered vertically on each of the end panels. Adhesive strips are placed on or adjacent the major score lines separating the face and end panels of the container Either a flat or gusseted bag is then laid on the blank with a sealed bottom edge adjacent the outside edges of the bottom flaps of the container. An open end of the bag extends beyond the upper edge of the container The blank is then folded along the blind score lines to form a partially assembled container that can be shipped flat Final assembly can be readily done in the field. The container eliminates the need for field insertion of the bag where one is required
32 Citations
18 Claims
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1. A method of forming a semi-finished corrugated shipping container having an integrally contained liquid impermeable bag which comprises
providing a supply of flat container blanks, the blanks having face panels, end panels, and a narrow manufacturers joint strip adjacent one end of the blank, the blanks having top and bottom closure flaps and top-to-bottom score lines between the face and end panels and along the manufacturers joint strip, each end panel further having a centered top-to bottom blind score line, the closure flaps having outer edges oriented transversely to the score lines, providing a supply of liquid impermeable bags, the bags having a longitudinal axis, the bags further having a sealed edge and an open edge, the bags being longer than the distance between the outer edges of the top and bottom closure flaps, applying an adhesive to the container blanks in the area of the face and end panels; -
placing a bag upon the adhesive treated container blanks, the longitudinal axis of the bags being parallel to the score lines so that the sealed edge of the bags is located generally adjacent the outer edge of the bottom closure flaps, and folding the panels along the blind score lines to enclose the bag and bond it to the container blank. - View Dependent Claims (2, 3, 4, 6, 7, 8, 9)
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5. The method of claim 5 in which a small spot of adhesive is additionally placed in the center portion of the bottom flaps
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10. A semi-finished corrugated shipping container having an integrally contained plastic bag which comprises.
a flat container blank, the blank having face panels, end panels, and a narrow manufacturers joint strip adjacent one end of the blank, the blank having top and bottom closure flaps and top-to-bottom score lines between the face and end panels and along the manufacturers joint panel, each end panel further having a centered top-to bottom blind score line, the closure flaps having outer edges oriented transversely to the score lines, a flexible liquid impermeable bag bonded within the blank, the bag having a longitudinal axis parallel to the score lines, the bag further having a sealed lower edge and an open upper edge, the bag being longer than the distance between the outer edges of the top and bottom closure flaps, the bag being bonded to the container blank in the area of the face and end panels, the sealed leading edge of the bag being located adjacent the outer edge of the bottom closure flaps, the blank being folded along the blind score lines to enclose the bag
Specification