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US 12,448,179 B2Granted
Tubular body for forming a packaging and packaging therewith
AssigneeAisapack Holding S.A.
InventorsJacques Thomasset, Gilles Demaurex
Life of this patent
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Abstract
The cellulose-based packaging includes a tubular body obtained by welding or bonding a sheet, including at least one longitudinal weld linking the ends of said sheet, at least one internal welding strip situated inside the packaging to form the longitudinal weld, the internal strip including a sealing material which becomes liquid during the welding of the ends and fills cavities formed at the ends of the internal strip so that the packaging is leak-proof once welded.
Claims14
A tubular body for a packaging intended to contain products in liquid, viscous or solid form, said tubular body comprising:
- a sheet based on a material which does not melt or creep during welding thereof;
- a longitudinal first weld linking ends of said sheet to form said tubular body, an internal welding strip situated inside the body forming said longitudinal first weld;
- and
- a second weld cutting the longitudinal first weld forming an intersection of the longitudinal first weld and the second weld,
- wherein cavities are present at least at the intersection of the longitudinal first weld and the second weld,
- said internal welding strip comprises a sealing material which becomes liquid during the welding of the ends of the sheet, the sealing material in a liquid form being configured to fill the cavities present at the intersection between the longitudinal first weld and the second weld in order to render the packaging leak-proof.
3 more elements
Dependencies are inferred from the claim text.