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US 6,805,261 B1Granted
Flexible tube and method of manufacture
AssigneeProfile Packaging, Inc.
InventorBernd Laudenberg
Life of this patent
Estimating the term…
Abstract
A package and method of making and filling it in the form of a tubular flexible bag of laminated plastic sheet material with a dispensing fitment including a spout and a removable closure mechanically fastened to a flat wall at one end of the tubular bag with the method of making the filled package being continuous starting with a flat sheet of material and ending with a filled and closed package.
Claims15
A flexible tubular package with a dispensing spout at one end comprising:
- a pair of opposed panels having sealed opposed side edges to form a tube,
- a bottom edge of said panels being fused together to form a closed tube,
- an end of said tube having an end wall extending between said panels,
- a fitment secured to said end wall including a dispensing spout forming a dispensing passage normal to the outside surface of said end wall, said spout having threads formed in said dispensing passage, and
- an anchor member disposed at the inside surface of said wall for engagement with said fitment to hold the latter in sealing engagement with said wall, said anchor member having an externally threaded stem engaging said threads of said dispensing passage.
2 more elements
The method of forming and filling a flexible, tubular package having a closable pouring spout, comprising:
- forming a flexible, tubular package with an open end and a wall forming a closed end,
- forming an aperture in said wall,
- positioning a fitment with a spout having an internally threaded passage extending between a pair of open ends and a plate at one end larger than said aperture adjacent to said wall at the exterior of s aid package and in alignment with said aperture,
- inserting an anchor member having a threaded stem and an annular flange larger than said aperture into said package through said open end with said stem in said aperture and into engagement with said threaded passage,
- rotating said anchor member relative to said fitment to engage said threads on said anchor member with the threads in said passage to draw said annular flange and said plate into sealed engagement with opposed surfaces of said wall at said closed end of said tubular package,
- filling said package with a product, and
- sealing said open end of said package.
4 more elements
Dependencies are inferred from the claim text.