Straw made from paper or paper-like material
AssigneeTembo Paper B.V.
InventorsSebo Erik Popken, Erik Marcel Snijder, Barend Jorrit Achterkamp, Oscar Slurink
Life of this patent
Estimating the term…
Abstract
A straw (1) made from paper or paper-like material and comprising a tubular body (3) having a circumference formed by a wall (5) surrounding a central axis and a bendable part extending axially along the central axis (6), wherein said bendable part comprises at least two corrugated profiles (8A-D) provided in the wall, and each corrugated profile comprises inward corrugations (9A-D) and outward corrugations (10A-D) being positioned one after the other in axial direction along the central axis, and a system and method to produce the straw.
Claims7
A method for producing a straw comprising a tubular body having a circumference formed by a wall surrounding a central axis and a bendable part extending axially along the central axis, said method comprising:
- providing the tubular body having the circumference formed by the wall surrounding the central axis,
- positioning at least two series of push members along the tubular body, wherein:
- each of the at least two series of push members comprises multiple push members being spaced from each other in a first axial direction parallel to axial the central axis of the tubular body,
- each push member is movable from a first member position in which the push member is spaced from the circumference of the tubular body into a second member position located closer to the central axis to push a contact part of the circumference of the tubular body that comes into contact with the push member towards the central axis in order to form an inward corrugation extending along only part of the circumference of the tubular body,
- at least one of the at least two series of push members is positioned, in view of the tubular body, circumferentially offset relative to at least one other of the at least two series of push members, and
- said at least one of the at least two series of push members comprises push members which are located between two push members of said at least one other of the at least two series of push members when seen in a second axial direction along the central axis of the tubular body,
- moving the push members of the at least two series of push members from the first member position into the second member position to form with each series of push members inward corrugations that are positioned one after the other in a third axial direction parallel to the central axis, and moving the inward corrugations closer to each other in the third axial direction parallel to the central axis to form outward corrugations extending along only part of the circumference of the tubular body and between subsequent inward corrugations, thereby providing the bendable part to the tubular body, which bendable part comprises at least two corrugated profiles provided in the wall, wherein each corrugated profile comprises the inward corrugations and the outward corrugations positioned one after the other in the third axial direction parallel to the central axis.
Dependencies are inferred from the claim text.