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    Rotary carton closing and sealing apparatus
    2.
    发明授权
    Rotary carton closing and sealing apparatus 失效

    公开(公告)号：US3996724A

    公开(公告)日：1976-12-14

    申请号：US623136

    申请日：1975-10-16

    Applicant: Donald E. Smith

    Inventor： Donald E. Smith

    IPC: B29C65/08 ,  B29C65/78 ,  B65B7/18 ,  B65B51/22 ,  B65B57/02 ,  B65B7/04 ,  B65B7/06

    CPC classification number: B29C66/83543 ,  B29C65/08 ,  B29C65/7885 ,  B29C66/43122 ,  B29C66/73921 ,  B29C66/8322 ,  B29C66/849 ,  B65B51/225 ,  B65B7/18 ,  B29C66/9512 ,  B29K2711/123 ,  B29L2031/7166 ,  Y10S53/02

    Abstract: Packaging apparatus for closing and sealing the open end of a carton of thermoplastic coated paperboard material or the like. A rotatable drum has a cylindrical wall that supports a plurality of carton closing and sealing units. During rotation of the drum, open ended cartons are successively picked-up at a carton receiving station and are carried by the drum to a carton delivery station. During the movement of the carton from the receiving to the delivery station, the open end of the carton is folded to a closed condition and the layers of the closed carton end are vibration welded together by one of the carton closing and sealing units. Each carton closing and sealing unit includes a pair of jaws movable between an open and closed position with respect to each other, a latching member for locking the jaws in their closed position, and a vibration welding device. When the jaws are in their open position, the open end of a carton can be received between the jaws, and subsequent closing of the jaws collapses the open end of the carton, with an anvil surface on one of the jaws being disposed to engage one outer surface of the layers of the closed carton end. The vibration welding device includes a horn that vibrates at a predetermined frequency when energized and that extends into engagement with the closed end of the carton to clamp the layers of the closed end of the carton between the surface of the horn and the anvil surface of the jaws to vibration weld the layers together. A jaw operating cam causes the jaws to move between their open and closed positions during rotation of the drum. When the jaws move to their closed position, the latching member moves to its locked position, and a latching member holding cam prevents the latching member from moving from its locked position until the welding operation is completed and the carton approaches the carton delivery station. A latching member release cam is engaged by the latching member as the carton approaches the delivery station to prevent the latching member from remaining in its locked position as the carton approaches the delivery station.

    Packing apparatus
    3.
    发明授权
    Packing apparatus 失效
    包装设备

    公开(公告)号：US3681177A

    公开(公告)日：1972-08-01

    申请号：US3681177D

    申请日：1971-04-26

    Applicant: GRACE W R & CO

    Inventor： PRESTON LESLIE RAYMOND ,  POPE VICTOR JAMES ,  STAGG JOHN ,  GREEN RONALD SYDNEY

    IPC: B65B9/06 ,  B30B15/34 ,  B65B7/04

    CPC classification number: B65B9/06

    Abstract: The specification discloses packing articles, in this case sandwiches, where the articles are of a triangular form and packing is effected by placing at least two pairs of the articles side by side between the layers of a single web of center-folded film. The articles are arranged to have the same orientation with one side of the triangle parallel to the film center-fold. Sealing may be effected by bringing together sealing plates having co-operating heat seal elements arranged as a pair of similar triangles each larger than the triangular outline of the articles. One additional seal line is required but may comprise one of the seal lines of a similar preceding operation.

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