Claims
- 1. A package comprising an outer container of stiff material, and an inner container of flexible sheet material, said inner container having a shape of a parallelepiped and being positioned within the inner space of said outer container for enclosing material therein, said inner container being made of a continuous flat sheet of material and having four side walls, a top wall, and a bottom wall which define said parallelepiped shape, each of two of said four side walls opposite to one another having thereon extending the entire longitudinal length thereof a weld seam, each of said two side walls also having attached thereto a flap extending from said top wall and being folded toward said bottom wall and sealed against the respective side walls, each flap comprising a weld seam continuous with the weld of its respective side surface, said top wall being constituted by the thickness of the sheet of material of the inner container and being free from flaps and folds to form a flat smooth surface, said bottom wall comprising a plurality of flaps continuous with said four side walls and sealed together to constitute a tight seal; said outer container comprising four side walls corresponding to said four side walls of said inner container, a top wall corresponding to said top wall of said inner container, and a bottom wall corresponding to said bottom wall of said inner container, said outer container further comprising a circumferential flange positioned adjacent to and spaced from said top wall of said outer container, said circumferential flange extending inwardly from the inner walls of said four side walls of said outer container so as to overlap said top wall of said inner container, said circumferential flange also having means for securing said top wall of said inner container thereto, weld seams at the juncture between said flaps and the side walls, said weld seams extending along the width of said side walls and stabilizing the folds between the flaps and side walls and the shape of the inner container in the region of the securing of said top wall with the circumferential flange of the outer container, and a cover lid sealably fittable within the outer container for enabling the removal of the material contained in said inner container and the subsequent closing thereof, said cover lid resting in its closed position sealably on said circumferential flange, whereby upon the cutting open of said top wall of said inner container via the opening defined by said circumferential flange the filling material in said inner container may be discharged.
- 2. A package as claimed in claim 1 wherein said weld seams at the juncture between the flaps and side walls extend along the entire width of the side walls.
- 3. A package as claimed in claim 1 wherein said inner container is inserted into the outer container in inverted position so that the top wall rests on said circumferential flange whereafter the inner container is filled with material and the bottom walls of the inner and outer containers are sealed whereupon the package is inverted, said circumferential flange being recessed from the opening at the top wall of the outer container to enable filling of the inner container and insure that the entire weight of the inner container and contents will bear on the circumferential flange.
- 4. A package as claimed in claim 3 wherein the opposite sides of said inner container are extended to form flaps, said flaps being folded toward and engaged with each other to form a flat closure for the bottom of the inner container, each of said flaps having an upwardly directed end portion, said end portions abutting each other whereby material filling the inner liner is retained by said closure.
- 5. A package as claimed in claim 3 wherein said inner container has at its end adjacent to the opening in the outer container extensions foldable to form two superimposed flat layers sealing the opening of the inner container.
- 6. A package as claimed in claim 3 wherein said inner container comprises strips of adhesive material on the inner surface of the two opposite side walls of said inner container extending along the length thereof, the lengths of said side walls being longer than the lengths of the two other opposite side walls of the inner container so as to protrude from the said two other opposite sides, the protruding portions of said opposite side walls being folded inwardly so as to form a flat bottom wall of the inner container; an end portion of each of said folded-over side wall portions extending upwardly from said top wall in engagement with each other, said adhesive strips joining said upwardly extending end portions whereby the inner container filled with material is closed and sealed.
Parent Case Info
This is a continuation of application Ser. No. 681,231 filed Apr. 28, 1976, now abandoned.
US Referenced Citations (7)
Continuations (1)
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Number |
Date |
Country |
Parent |
681231 |
Apr 1976 |
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