Opening device for packaging containers
AssigneeTetra Alfa Holdings S.A.
InventorsBo Nilsson, Doriano Ottocan, Per Sponholtz
Life of this patent
Estimating the term…
Abstract
In an opening device for tetrahedral-shaped or parallel piped-shaped packaging containers, a strip of packaging material is provided with tear perforation lines substantially parallel to the longitudinal direction of the strip of material. The tear perforation lines intersecting a transverse seam on the packaging material are located relative to one another such that they converge at a point in a finished packaging container.
Claims16
A packaging container with an opening device, comprising:
- a packaging container manufactured from a continuous strip of material, the continuous strip of material being formed into a tube having an inner surface, said tube being cut at first and second transverse seams at right angles to a longitudinal direction of the strip of material, the first transverse seam being closed so that the inner surface of the tube is sealed to itself and the second transverse seam being closed on itself to form the packaging container, the first and second closed transverse seams being positioned at opposite ends of the packaging container;
- an opening device manufactured with the packaging container from the continuous strip of material, the opening device being formed by two continuous perforation lines extending, in a direction on the packaging container corresponding to the longitudinal direction of the continuous strip of material, to the first and second closed transverse seams on the packaging container such that the packaging container may be opened from the first closed transverse seam to the second closed transverse seam, the two perforation lines coinciding at a point at the first closed transverse seam.
In a packaging container formed from a continuous strip of packaging material having longitudinal edges and formed into a tube having an inner surface, with individual containers formed by closing two regularly spaced transverse seams at right angles to a longitudinal direction of the tube, the inner surface being sealed to itself at a first one of said transverse seams, said closed transverse seams being positioned at opposite ends of said container, the improvement of an opening arrangement comprising a pair of continuous perforation lines extending substantially longitudinally of said strip of material, said perforation lines extending a distance greater than the distance separating said transverse seams, said perforation lines providing an opening arrangement extending to each of said closed transverse seams such that the packaging container may be opened from the first one of said closed transverse seams to a second one of said closed transverse seams, said perforation lines coinciding at the first one of said closed transverse seams.
In a packaging container formed from a continuous strip of packaging material having longitudinal edges and formed into a tube, with individual containers formed by closing two regularly spaced transverse seams at right angles to a longitudinal direction of the tube, the improvement of an opening arrangement comprising a pair of continuous perforation lines extending substantially longitudinally of said strip of material, said perforation lines extending a distance greater than the distance separating said transverse seams, and thereby providing an opening arrangement extending to each of said closed transverse seams;
- wherein the closed transverse seams of said packaging container are oriented at about 90.degree. in relation to each other;
- wherein said perforation lines diverge from each other adjacent a first one of said closed transverse seams and converge toward each other adjacent a second one of said closed transverse seams;
- and
- wherein said container is in the shape of tetrahedron.
An opening arrangement for a tetrahedral shaped packaging container having four substantially triangular sides and two seams extending along different corners formed between the sides, said seams being arranged at substantially 90.degree. to each other, said opening arrangement including a pair of perforation lines extending continuously from one of said seams to the other of said seams.
Dependencies are inferred from the claim text.