Flexible bags – Wall details – Reinforced
Patent
1998-02-18
1999-07-13
Garbe, Stephen P.
Flexible bags
Wall details
Reinforced
229 8708, 22911703, 22911706, 22911732, B65D 3008, B65D 3016, B65D 3302
Patent
active
059216816
DESCRIPTION:
BRIEF SUMMARY
This invention relates to a pack for articles of merchandise such as "fast-food" products including burgers, fish pieces, chicken pieces and french fries, or other food items including confectioners, bakery products or gift items.
FR-A-1,339.852 discloses a package comprising a continuous strip of rigid packaging material, for example of cardboard, which envelopes a bag or sachet. The strip is divided by folding lines into two side panels separated by folding lines from bottom rectangles. The bottom rectangles are folded between one another by a folding line enabling the strip to be flattened and the bag to be sandwiched for stacking and storage.
GB-A-2087357 discloses a collapsible container e.g. for a food product such as chipped potatoes includes front and back walls which at their mutually adjacent edges are hinged on bowed hinge lines to a foldable bottom for the container. At their side edges the front and back walls are connected to side wall forming panels by further bowed hinge lines, these panels being secured in overlapping relationship. The bowed hinge lines of the bottom and side walls co-operate with associated median fold lines of those walls to hold the carton erected and capable of standing upright.
It is an object of the invention to provide a pack for food or the like in which the base of the pack is positively held erect.
This invention provides a pack for articles of food or other merchandise comprising a paper or film bag and a carton form for supporting a lower part of the bag having a base with a central fold line and walls hinged to the base along further fold lines to enable the carton and bag to be folded flat and to be erected to open the bag, the side walls of said lower part of the bag being secured to the side walls of the carton so that when the carton is erected by opening the folded base into a V-form the bottom part of the bag is opened, and, as the V-form is progressively widened, is tensioned as the walls move apart until the base of the carton moves "over centre" and inverts to hold the lower part of the bag open to receive an article or articles to be packed therein, wherein ends of the base are of projecting V-shaped form and said further fold lines between the side walls and bottom of the carton are convexly curved so that on inverting the base of the carton goes "over centre" and assumes a concavely curved form with the side walls of the carton bowed or convexly curved whereby the base of the carton is braced open against the bottom part of the bag held open in tension.
Generally the sides of the bag may be bonded to the walls of the carton.
More specifically, the sides of the bag may be adhered to the walls of the carton.
In one particular embodiment of the invention the carton may comprise side walls and end walls and a bottom wall bridging the side walls but not connected to the end walls.
In the latter arrangement the end walls of the carton may be shorter than the side walls of the carton so that when the carton is unfolded, the bottom wall of the carton forms a V-formation which can be snapped into an inverted V which holds the side walls apart with the end walls straight to receive an article in the container.
More specifically, the carton may be located within the bag.
In alternative arrangements the bag may be located within the carton with the sides of the bag secured to the inside faces of the side walls of the carton.
In the latter arrangement, the mouth part of the bag may be folded to form outwardly extending wing portions which can be folded around the article between the side walls and tucked between the bottom wall of the bag and base of the carton to hold the bag closed.
The following is a description of some specific embodiments of the invention, reference being made to the accompanying drawings in which;
FIG. 1 is a plan view of a blank sheet of paper with a superimposed carton blank of material for a carton from which a pack for a burger or other article is formed;
FIG. 2 is a perspective view of the completed folded pack in flat condition;
FIG
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International Search Report.
Garbe Stephen P.
Pethick & Money Ltd.
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