Envelopes – wrappers – and paperboard boxes – Paperboard box – Including tearing or breaking means for opening a nonunitary...
Patent
1999-05-10
2000-07-04
Garbe, Stephen P.
Envelopes, wrappers, and paperboard boxes
Paperboard box
Including tearing or breaking means for opening a nonunitary...
493110, 53412, 531338, 53242, 2291231, 229125, 229205, 220269, B65D 4314
Patent
active
060826142
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a packaging for bulk goods which, once filled, is sealable and resealable to permit the withdrawal of bulk goods, which comprises a parallelepiped-shaped folded box body of laminated cardboard, in which a lid having side walls which are beaded or folded over through 90.degree. is placed in position.
Such packaging for bulk goods is known in a design in which the top part of the folded box body is firmly and tightly connected to a beaded covering part, and comprises a discharge opening which is sealed so as to be resealable either only by means of wedging cover, or comprising a removable membrane in the opening.
In addition, beverage cartons having a folded box body are known and these are sealed by means of a beaded metal or plastics lid, holes being punched into said top part for withdrawal of the beverage.
In order to package pressure-sensitive loose bulk material, e.g. cereals, packages are known and these comprise an outer parallelepiped-shaped folded box, which is designed to be opened and then closed again via folded-over adhesive tongues. In order to protect the bulk goods against humidity and atmospheric oxygen, a bag of paper and/or plastics material is disposed within the folded box and simultaneously also provides an aromatic seal. Such packages comprising two parts do, however, have the drawback that the filling and finishing operations are complicated and thus costly while, on the other hand, it is not possible to fill the interior of the package sufficiently, because it is subsequently necessary for the previously filled and sealed bag to be pushed into the folded box. At present, however, such packages are the only manner in which it is possible for pressure-sensitive bulk goods to be packed so as to be substantially protected against pressure and to be tight to humidity and atmospheric oxygen.
The object underlying the present invention is to propose a packaging for bulk goods of the kind described at the outset, which is simple to fill, while having an increased filling capacity, and is designed to protect the package content against pressure, humidity and atmospheric oxygen.
According to the invention, this object is met in that the folded box body comprises a folded box blank, which is laminated with a sealing coat and is sealed or glued on one longitudinal overlapping seam, in that the folded box body has a feed opening which extends across the entire end surface on that end which is opposite the lid and which is sealed or glued once the package has been filled with the bulk goods, in that the lid comprises a pull-up window which is resealable, and in that the lid is inwardly provided with a sealing coat such that the corner regions between the folded-over side walls are also covered by the sealing coat, and the lid, together with its coating foil, is continuously sealed or glued tightly to the folded box body.
In a packaging of this kind, two different openings and seals are provided, i.e. a feed opening, which is as wide as possible and is used for originally filling said package, at one end of the package, whereas a discharge opening, which is resealable, is provided at the other end. The packaging according to the invention has the advantage that is comprises only a single package part, i.e. the folded box body together with the lid and, accordingly, does not require an additional inner bag. As a result of a corresponding design of the corner regions of the lid, it is possible to ensure an absolutely tight seal or glued connection with the corresponding end of the folded box body, because the sealing coat of the lid also extends into the corner regions, a feature which is usually not available in standard cardboard lid having side walls folded over through 90.degree..
In a packaging, in which the lid comprises a cardboard blank having lateral surfaces appended to a basic surface area via scoring and punched out corner regions, this tightness in the corner regions is achieved in that a thermoplastic foil, which covers the punched-out corner regions, is applie
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Garbe Stephen P.
Kellogg Company
Mai Tri M.
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