Claims
- 1. A method for producing a package for flowable filling materials comprising the steps of:
- forming a tube having open bottom and top ends from a plurality of at least four contiguous side walls by joining at least one pair of adjacent side walls with a longitudinal sealing seam such that the tube thus formed has a quadrangular configuration at least at its bottom end and at a section immediately adjacent thereto and a cylindrical configuration at least at its top end and at a section immediately adjacent thereto;
- forming a multi-layer bottom wall from bottom end panels which are joined to the quadrangularly oriented side walls of the tube at its bottom end;
- by first forming a pair of oppositely disposed single-thickness rectangular bottom wall panels and a pair of oppositely disposed double-thickness triangular bottom wall panels, the pair of single-thickness rectangular bottom wall panels and the pair of double-thickness triangular bottom wall panels being mutually perpendicularly oriented, from the bottom end panels, by providing fold lines thereon;
- inwardly folding the single-thickness rectangular bottom wall panels into the plane passing through the bottom of the tube, such that the outer transverse edges of the rectangular bottom wall panels intersect along a centerline in the plane passing through the bottom of the tube;
- simultaneously outwardly folding the double-thickness triangular bottom wall panels into the plane passing through the bottom of the tube such that apexes of the double-thickness triangular bottom wall panels are directed away from the center of the tube;
- forming a double-thickness transverse sealing flap extending along the centerline of the plane passing through the bottom of the tube, along which the rectangular bottom wall panels intersect, and to the apex of each of the double-thickness triangular bottom wall panels, from rectangular extension flaps extending from the outer transverse edge of the bottom end panels, by providing fold lines on the extension flaps;
- folding the double-thickness sealing flap thus formed along the length of the tube and extending to the apex of each of the double-thickness triangular bottom wall panels, from a first position perpendicular to the plane passing through the bottom of the tube to a second position laterally on one side of its sides, essentially flat with the plane passing through the bottom of the tube;
- inwardly folding the double-thickness triangular bottom wall panels and the sections of the double-thickness sealing flap adjoining thereto, from their first position in the plane passing through the bottom of the tube wherein their apexes are directed away from the center of the tube, through 180.degree. , to a second position in the plane passing through the bottom of the tube on top of the rectangular bottom wall panels such that the apexes of the double-thickness triangular bottom wall panels are directed toward the center of the tube, thereby forming a second, partial layer of the bottom wall;
- injection molding a top wall from a thermoplastic material without a carrier material, the top wall having a circular shape corresponding to the circular opening of the cylindrical open top end of the tube, the top wall being joined to the side walls of the tube at its open top end, and the top wall further having pouring means attached thereto capable of being moved from a first position wherein the pouring means is folded inwardly of the outside contour of the package for storage, to a second position, wherein the pouring means extends outwardly from the outside contour of the package for pouring; and
- joining the top wall to the side walls of the tube at its open top end.
- 2. A method for producing a package for flowable filling materials comprising the steps of:
- forming a tube having open bottom and top ends from a plurality of at least four contiguous side walls, by joining at least one pair of adjacent side walls with a longitudinal sealing seam such that the tube thus formed has a quadrangular configuration at least at its bottom end and at a section immediately adjacent thereto and a cylindrical configuration at least at its top end at a section immediately adjacent thereto;
- forming a multi-layer bottom wall joined to the side walls of the tube at its open bottom end, from bottom end panels which extend from the bottom end of the side walls in a quadrangular orientation and which have an inner transverse edge adjacent to the bottom of the tube and an outer transverse edge opposite thereto,
- by first forming a pair of oppositely disposed single-thickness rectangular bottom wall panels and a pair of oppositely disposed double-thickness triangular bottom wall panels from corresponding bottom end panels, the pair of oppositely disposed rectangular bottom wall panels being formed from a first pair of bottom end panels mutually perpendicular to a second pair from which the triangular bottom wall panels are formed, by providing:
- a first fold line extending along the inner transverse edge of each of the two corresponding bottom end panels adjacent to a section of the quadrangular bottom of the tube, and
- the pair of oppositely disposed triangular bottom wall panels being formed from a second pair of bottom end panels mutually perpendicular to the first pair from which the rectangular bottom wall panels are formed, by providing:
- a first fold line extending along the inner transverse edge of each of the two corresponding bottom end panels adjacent to a section of the quadrangular bottom of the tube, thereby defining the base of a single-thickness, full-triangular bottom wall panel, and
- second and third fold lines on each of the two bottom end panels extending diagonally from opposite ends of the first fold line, with the second and third fold lines intersecting at the middle of the outer transverse edge of the bottom end panel, thereby defining:
- the sides and apex of the full-triangular bottom wall panel centrally positioned on the bottom end panel, and
- a single-thickness half-triangular bottom wall panel at each end thereof,
- such that each half-triangular bottom wall panel is bounded by a side of the adjoining full-triangular bottom wall panel and by the outer transverse edge and a side fold line of the bottom end panel parallel to the side wall,
- forming the double-thickness triangular bottom wall panels by the simultaneous outward and downward folding of the single-thickness central triangular bottom wall panels into the plane passing through the bottom of the tube, outside the perimeter of the tube and the inward and downward folding of the rectangular bottom wall panels into the plane passing through the bottom of the tube, inside the perimeter of the tube, causing the cooperation of the half-triangular bottom wall flap formed at each end of the two bottom end panels with the single-thickness, central full-triangular bottom wall panel on each of the two respective corresponding bottom end panels, thereby forming the double-thickness triangular bottom wall panels;
- simultaneously folding the pair of oppositely disposed rectangular bottom wall panels inward and downward into the plane passing through the bottom of the tube;
- forming a double-thickness transverse sealing flap extending across the bottom wall, adjacently oriented parallel to the intersection of the inner transverse edges of the triangular bottom wall portions and folded laterally on a side of the sealing flap into the plane passing through the bottom wall, from a rectangular extension flap further extending from the outer transverse edge of each bottom end panel at the bottom end of the tube, the transverse sealing flap being defined by providing:
- a transverse fold line near the outer transverse edge of each bottom end panel, and
- a vertical fold line extending from the apex of the triangular bottom wall panels on the two oppositely disposed bottom end panels bearing such triangular bottom wall panels to the outer transverse edge of the rectangular extension flap;
- injection molding a top wall from a thermoplastic material without a carrier material, the top wall having a circular shape corresponding to the circular opening of the cylindrical open top end of the tube, the top wall being joined to the side walls of the tube at its open top end, and the top wall further having pouring means attached thereto capable of being moved from a first position wherein the pouring means is folded inwardly of the outside contour of the package for storage to a second position wherein the pouring means extends outwardly from the outside contour of the package for pouring; and
- joining the top wall to the side walls of the tube at its open top end.
- 3. The method of producing a package for flowable filling materials according to claim 2 wherein the top wall is injection molded and joined to the open top end of the tube in situ.
Priority Claims (1)
Number |
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3217156 |
May 1982 |
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Parent Case Info
This application is a division of application Ser. No. 07/013,147, filed Feb. 11, 1987, U.S. Pat. No. 4,706,874, which application is a continuation of Ser. No. 06/784,158 filed Oct. 4, 1985, now abandoned, which in turn was a divisional of Ser. No. 06/481,634 filed Apr. 4, 1983, U.S. Pat. No. 4,564,139.
US Referenced Citations (13)
Divisions (2)
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13147 |
Feb 1987 |
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481634 |
Oct 1983 |
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Continuations (1)
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784158 |
Oct 1985 |
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