Rectangular lid, resealable, preferably for hot-filled products.

Abstract

the lid (1) has a right-angled geometry, adapts to the rectangular container shape, is provided with a circumferentially applied sealing compound (2) and has a ventilation opening (4) (Fig. 1,2,3,4,5).

Description

State of the art

[0001] Today's hot products (e.g., jam) are predominantly portioned, sealed, transported, and sold in glass containers. A round metal lid is sealed with a cam closure, and the cooling product, through gas contraction, creates a vacuum inside the container. The cam closure is a screw thread and requires a circular geometry. However, round geometries in the packaging industry are extremely disadvantageous for the entire product lifecycle with regard to stamping processes, stackability, and stacking area. This affects costs for stacking area, display space on shelves, pallets, transport, etc.

[0002] In particular, the large volume of non-stackable glass bottles results in high transport costs when delivered to the bottler. This also applies from the bottler through the market and up to private disposal in glass containers. Novelty.

[0003] The use of rectangular geometries for containers and closures can eliminate numerous disadvantages.

[0004] The presented concept aims to replace the advantage of cam closures for resealing, thereby creating genuine added value for the products described above. On the one hand, resealing can be achieved geometrically through precise edge geometry with light pressing force. This requires tight tolerances between the lid and container with slight spring pressure.

[0005] Furthermore, it is now possible to evacuate the product using vacuum pumps, significantly reducing oxidation with atmospheric oxygen. The proposed sealing systems, using sealing compounds or opening and closing tabs, allow for pumping after partial removal of the product. Typical mini-pumps are already widespread and commonly used in private food preparation. Wines, vacuum bags...are treated in this way to extend the shelf life of the contents. REFERENCE MARK LIST 1 rectangular lid 2 sealing rings 3 Rectangular Containers 4 ventilation openings 5 Sealing compound 6 Opening and closing flap 7. Adhesive layer 8 adhesive layers 9 Sealing compound with opening and closing function 10 Air vent gap hood 11 12 Rubber seal 13 Connection to the pump

Claims

[1] the lid (1) has a right-angled geometry, adapts to the rectangular shape of the container, is provided with a circumferentially applied sealing compound (2) and has a ventilation opening (4) ( Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5). [2] The sealing compound (2) automatically seals the container under negative pressure. [3] The lid (1) is made of glass, plastic, metal, ceramic or paper. [4] The ventilation opening (4) is fitted with a closure. [5] The closure of the ventilation hole (4) is formed by a sealing compound (5) or a flexible opening and closing flap (6). [6] The sealing compound (5) is made of plastic and is elastic. [7] The ventilation opening (4) is closed by a defined coated opening and closing flap (6). [8] The coated opening and closing flap (6) has an adhesive layer for fixing (8) to the lid (1), a pressure-sensitive adhesive layer (7) for closing and / or re-closing and an uncoated zone for opening. [9] That the opening and closing flap (6) is made of an elastic material with suitable barrier functions and adapts to the outer surface of the lid (1) when there is negative pressure in the container. [10] The sealing compound (5) or the opening and closing flap (6) first allows air / gas to escape by creating a vacuum in the container (1,3) and thereby closes the container itself. [11] The vacuum is created by cooling the contents of the container (1, 3) and / or by an external pump via (13) ( Fig. 5). [12] The sealing compound (5) or the opening and closing tab (6) is released again by mechanical processes and pressure equalization to the lid opening is achieved. [13] The sealing compound (9) ( Fig. 4) is designed to be movable and can perform both the opening and closing functions depending on its position.

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