Vacuum sealer with sealing bag cooling enhancement and improved lift mechanism

    公开(公告)号:US11975874B2

    公开(公告)日:2024-05-07

    申请号:US17000437

    申请日:2020-08-24

    CPC classification number: B65B31/06 B65B51/10 B65B51/32

    Abstract: A vacuum sealer for vacuum packing products in plastic vacuum bags includes a sealing bar and a lift mechanism configured to raise and lower the sealing bar. In the raised position, the sealing bar is configured to engage and compress the vacuum bag against a compression bar. The vacuum sealer include a vacuum pump that is operated to draw a vacuum in the vacuum bag. The sealing bar includes a heating element that is configured to heat the sealing bar when energized. Once the vacuum is drawn in the vacuum bag, the sealing bar is heated and the heat is applied to the vacuum bag, which seals closed the vacuum bag with the product vacuum packed therein. The lifting mechanism lowers the sealing bar to release the vacuum packed product. The vacuum sealer includes a cooling chamber into which the sealing bar is moved when lowered by the lift mechanism. A cooling fan directs convection air through the cooling chamber and over the sealing bar to cool the sealing bar.

    Sealing machine and method for packaging a food product

    公开(公告)号:US11964784B2

    公开(公告)日:2024-04-23

    申请号:US17681890

    申请日:2022-02-28

    Applicant: MONDINI S.R.L.

    Inventor: Giovanni Mondini

    Abstract: A sealing machine and method for sealing a preformed tray (2) with a plastic film (26), the method comprising a cooling step in which, by acting on the outside of the tray (2), heat is removed at least from the bottom wall (3) of the tray (2) while the heated plastic film (26) is applied over the tray (2) and a food product (25), and the sealing machine (1) comprising a supporting element which defines a housing (7) which has a fixed bottom surface (9) suitable for making contact, in use, with the bottom wall (3) of the tray (2), a plurality of ducts (19) which define a flow path (20) for a cooling fluid in the supporting element, and a cooling system (17) configured to cool the cooling fluid bringing it to a temperature equal to or less than 10° C., and preferably equal to or less than 6° C.

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