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US 6,952,910 B1Granted
Gas filled bodies
OwnerJohannes Lörschinventor
Life of this patent
Estimating the term…
Abstract
In a plastic tube (1) for the production of gas filled bodies, with two superimposed sheets, connected in a gas tight manner to each other along a first longitudinal edge thereof, the upper sheet (2) and the lower sheet (3) are welded together in the transverse direction along gas tight welded seams (5a,5b), arranged in pairs at a separation from each other, in order to form inflatable pockets (7), which seams extend from the first longitudinal edge (4) to a point at a predetermined separation from the opposing second longitudinal edge (6). The pockets each present, between the upper sheet and the lower sheet, a gas filling opening (8) which is accessible from the second longitudinal edge. Also proposed are a method for the production of gas filled bodies using such plastic tubes and a device for carrying out said method.
Claims9
A method for the manufacture of gas filled bodies comprising the steps of:
- a) readying of a prefabricated plastic tube (1) with two superimposed sheets being connected in a gas tight manner to each other along a first longitudinal edge (4), an upper sheet (2) and a lower sheet (3) of said two superimposed sheets welded together in a transverse direction along gas tight welded seams (5a, 5b), said gas tight welded seams (5a, 5b) being arranged in pairs (5) at a separation from each other to form inflatable pockets (7), said welded seams extending from said first longitudinal edge (4) to a point at a predetermined separation from an opposing second longitudinal edge (B), a perforation (9) being located in an intermediate space between said welded seams (5a, 5b) of each pair (5) of said welded seams, each of said pockets (7) having at least a partial open section adjacent said second longitudinal edge (6) to form a gas filling opening (8);
- b) providing a gas filling device (25) for successive blowing a filling gas into each said pocket (7) through said gas filling opening (8),
- c) providing a welding device (13) for gas tight welding of said gas filling opening (B) of the filled pocket (7), and
- d) continuously moving said tube (1), said tube being continuously moved first past said gas filling device (25) here said filling gas is blown into each said successive pocket through said gas filling opening (8);
- holding together said upper and lower sheets by drive belts (26, 27) to prevent the filling gas from escaping each said pocket;
- then continuously moving said tube past said welding device (28) where said gas filling opening (8) of each said successive pocket (7) is gas tight welded.
3 more elements
A device for carrying out a method for the manufacture of gas filled bodies comprising:
- a holder for holding a supply of a tube,
- a transport device for transporting the tube through the device,
- a gas filing device (25) disposed proximate a second longitudinal edge (6) of the tube (1) for blowing a filling gas into a gas filling opening (8) defined by a partial open section adjacent said second longitudinal edge (6) of each successive pocket (7) of said tube (1), and
- said transport device including drive belts (26, 27) for holding closed the gas filling opening outside the gas filling device (25) for preventing the filling gas from escaping each said successive pocket (7);
- a welding device (28) disposed proximate the second longitudinal edge (6) said welding device (28) including a welding tool (29) for welding closed the gas filling opening (8) of each successive pocket (7) in a gas tight manner with a welded seam (20) extending in a longitudinal direction of the tube;
- and
- said transport device for continuously moving the tube (1), said tube being moved first past said gas filling device (25) and then past said welding device (28).
4 more elements
A device for carrying out a method for the manufacture of gas filled bodies comprising:
- a holder for holding a supply of a tube,
- a transport device for transporting the tube through the device,
- a gas filling device (25) disposed proximate a second longitudinal edge (6) of the tube (1) for blowing a filling gas into a gas filling opening (8) defined by a partial open section adjacent said second longitudinal edge (6) of each successive pocket (7) of said tube (1), and
- a welding device (28) disposed proximate the second longitudinal edge (6), said welding device (28) including a welding tool (29) for welding closed the gas filling opening (8) of each successive pocket (7) in a gas tight manner with a welded seam (20) extending in a longitudinal direction of the tube;
- said transport device for continuously moving the tube (1), said tube being moved first past said gas filling device (25) and then past said welding device (28), and
- said welding device (28) having a placement surface (14) for supporting the tube (1) in an area of the gas filling opening (8) of each said successive pocket (7) and said placement surface including a higher section (16) facing toward the second longitudinal edge (6) and a lower section (15) facing toward the packet (7), and
- a pair of clamps (17a, 17b), a respective one of said pair of claims extending in a transverse direction on a respective side of the welding tool (29), one clamp (17a) of said pair of clamps being disposed above the higher section (16) and an other one clamp (17b) being disposed above the lower section (15), and wherein said pair of clamps (17a, 17b) in a working position contact an upper sheet (2) of said tube (1) and press said sheet (2) and a lower sheet (3) of tube (1) together on the higher section (16), and a slit (19) between the upper sheet (2) and the lower sheet (3) being defined by said other one clamp (17b) of said pair of claims disposed above the lower section (15).
4 more elements
A plastic tube for the manufacture of gas filled bodies comprising:
- two superimposed sheets being connected in a gas tight manner to each other along a first longitudinal edge (4),
- an upper sheet (2) and a lower sheet (3) of said two superimposed sheets being welded together in a transverse direction along gas tight welded seams (5a, 5b),
- said gas tight welded seams (5a, 5b) being arranged in pairs (5) at a separation from each other to form inflatable pockets (7),
- said gas tight welded seams (5a, 5b) extending from said first longitudinal edge (4) to a point at a predetermined separation from an opposing second longitudinal edge (6),
- a perforation (9) being located in an intermediate space between said welded seams (5a,5b) of each pair (5) of said welded seams,
- each of said pockets (7) having at least a partial open section adjacent said second longitudinal edge (6), to form a gas filling opening (8), and
- a plurality of punched out sections (10, 21) being located on said perforations (9) forming a coding to indicate a position of said gas tight welded seams (5a, 5b) and selected properties of a pocket material including one or more of a sheet thickness;
- a sheet width;
- a welding time and a welding temperature.
6 more elements
Dependencies are inferred from the claim text.