Envelopes – wrappers – and paperboard boxes – Paperboard box – With inner flexible or flaccid bag liner
Reexamination Certificate
2000-06-28
2002-05-14
Young, Lee (Department: 3727)
Envelopes, wrappers, and paperboard boxes
Paperboard box
With inner flexible or flaccid bag liner
C229S117300, C229S217000, C229S219000, C229S213000
Reexamination Certificate
active
06386438
ABSTRACT:
FIELD OF THE INVENTION
This invention is directed generally to a carton blank and a carton formed therefrom and more particularly to a fluid impermeable carton from which the material contained therein may be readily removed.
BACKGROUND OF THE INVENTION
In order to protect moisture sensitive materials in a carton, there have been many kinds of fluid impervious cartons developed to protect such moisture sensitive materials from deleterious elements such as the humidity in the air. The vast majority of these leakproof cartons have an outer layer formed from a relatively rigid material and an inner layer formed from a relatively flexible fluid impervious material to provide the moisture protection. When it is desired to remove an amount of the material in the carton, it is necessary to open both the outer and inner layers. It is desirable that an opening be formed in both the outer and inner layers at the same time. Also, it is desirable that such an opening be located so that it is not necessary to make an oversized carton so that none of the material in the carton is spilled during the opening thereof. Another desired advantage is that the structures associated with making the opening be of a nature that such structures may be returned to substantially the original position to further protect the material remaining in the carton. This invention provides such a carton.
BRIEF DESCRIPTION OF THE INVENTION
This invention relates to a carton blank and a carton formed therefrom wherein the carton has a fluid impervious liner and a flip top lid and a pouring spout formed by securing an insert to the carton blank so that weakened portions in an outer layer of the carton and in the fluid impervious liner may be broken to form a pour spout for removing the material contained in the carton.
In a preferred embodiment of the invention, the carton blank comprises an outer layer comprising a first generally rectangular sheet of a relatively rigid material having an outer surface and an inner surface and a plurality of cut and fold lines formed therein for dividing the outer layer into a plurality of panels. The panels include at least a first sidewall panel that is integral with a second sidewall panel and a third sidewall panel and is joined thereto by opposite fold lines. First, second and third top panels are integral with the first, second and third sidewall panels and joined thereto by fold lines. A first inner layer comprising a second generally rectangular sheet of a relatively rigid material, that is substantially smaller than the first generally rectangular sheet of a relatively rigid material, has an outer surface and an inner surface and is located opposite to only portions of the first, second and third sidewall panels. The second generally rectangular sheet has a first partial sidewall panel integral with a second partial sidewall panel and a third partial sidewall panel and joined thereto by opposite fold lines. The first sidewall panel and the first partial sidewall panel have substantially the same width between the opposite fold lines thereof. The first, second and third partial sidewall panels have upper edge portions and lower edge portions with at least a portion of the first partial sidewall panel adjacent to the lower edge thereof being secured to at least a portion of the first sidewall panel. The upper edge portions are located adjacent to but spaced from the fold lines between the first, second and third sidewall panels and the first, second and third top panels. A second inner layer comprising a generally rectangular sheet of a relatively flexible fluid impervious material having an outer surface and an inner surface has at least portions of its outer surface secured to opposite portions of the inner surface of the outer layer and at least other portions of the outer surface of the second inner layer are secured to at least portions of the inner surface of the first inner layer. The second inner layer has a weakened portion located adjacent to but spaced from the upper edges and portions of the outer surface of the second inner layer surrounding the weakened portion are secured to opposite portions of the inner surface of the first inner layer. A continuous weakened portion is formed in portions of the first, second and third sidewall panels of the first generally rectangular sheet of a relatively rigid material so that an opening may be formed in the outer layer. As explained more fully below, the continuous weakened portion and the weakened portion may be broken to form an opening for the carton and a flip top lid for opening or closing the opening.
The continuous weakened portion has a first portion located in the first sidewall panel adjacent to but spaced above the at least a portion of the first sidewall panel and has end portions located in the opposite fold lines to form a frustum of a V, a second portion located in the second sidewall panel and extending at an acute angle between one of the end portions of the first portion and the fold line between the second sidewall panel and the second top panel and a third portion located in the third sidewall panel and extending at an acute angle between the other of the end portions of the first portion and the fold line between the third sidewall panel and the third top panel which when broken form the flip top lid.
The second top panel has opposite spaced apart fold lines extending in a direction substantially perpendicular to the fold line between the second top panel and the second sidewall panel with an arcuately shaped score line in the second top panel extending between the opposite spaced apart fold lines and the third top panel has opposite spaced apart fold lines extending in a direction substantially perpendicular to the fold line between said third top panel and said third sidewall panel with an arcuately shaped score line in the third top panel extending between the opposite spaced apart fold lines. The opposite spaced apart fold lines in the second and third top panels are located so that they are in a superposed position when the third top panel is superposed over the second top panel and the arcuately shaped score lines in the second and third top panels extend in opposite directions when the third top panel is superposed over the second top panel.
The above carton blank also has a fourth sidewall panel integral with one of the second and third sidewall panels and joined thereto by a fold line, a glue tab panel is integral with the fourth sidewall panel and is joined thereto by a fold line and a fourth top panel is integral with the fourth sidewall panel and is joined thereto by a fold line. The carton blank also has a first, second, third and fourth bottom panels respectively integral with the first, second, third and fourth sidewall panels and joined thereto by fold lines. In a preferred embodiment of the invention, a first strip of a relatively flexible material is superposed over at least the first second, third and fourth top panels and portions of the first, second, third and fourth sidewall panels adjacent to the fold lines between the top panels and the sidewall panels and is secured to portions of the outer surface of the second inner layer and a second strip of a relatively flexible material is superposed over at least the first, second, third and fourth bottom panels and portions of the first, second, third and fourth sidewall panels adjacent to the fold lines between the bottom panels and the sidewall panels and is secured to other portions of the outer surface of the second inner layer.
A dispensing carton having a flip top lid is formed from the above described carton blank and comprises the plurality of sidewall panels folded around the parallel fold lines and held in folded relationship by the glue tab panel to form a central body portion; the plurality of sidewall panels comprise at least one sidewall panel having integral second and third sidewall panels joined thereto by opposite fold lines; a first inner layer or inner insert having a first partial sidewall panel, a second partial
Conatser Robert L.
Kastanek Raymond S.
Walsh Joseph C.
Goodwin, Esq. Michael A.
Graphic Packaging Corporation
Kelly, Esq. Joseph J.
Klaas, Law, O'Meara & Malkin, P.C.
Mai Tri M.
LandOfFree
Carton blank, carton and method of forming the carton does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Carton blank, carton and method of forming the carton, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Carton blank, carton and method of forming the carton will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2860006