Back to results
US 4,606,174 AGranted
Method and an arrangement for the manufacture of packing containers
AssigneeTetra Pak International AB
InventorRune Berg
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeTetra Pak International AB
InventorRune Berg
Estimating the term…
In the manufacture of packing containers of the type containing a liquid product with a certain portion of "solid" particles (e.g. soup with pieces of fruit) it is difficult to fill the packing containers in such a manner that the desired proportions of liquid and solid contents are safeguarded. This is the case in particular in modern, fast working packing machines, since the filling time is short and a rapid filling, moreover, increases the risk of contents ending up in undesirable places and rendering difficult the sealing of the packing container. In accordance with the invention which relates to a method as well as to an arrangement for the manufacture of packing containers, this is solved by feeding the solid and liquid parts separately via two filling pipes, the feeding of the liquid contents being ended only after the feeding of solid particles has been ended.
A method for the feeding of liquid contents and solid particles during the manufacture of packing containers by repeated transverse flattening and sealing of packing material in the form of a tube, comprising, transversly flattening and sealing said packing material, feeding the solid particles to the tube in the form of a metered quantity after said transverse flattening of the packing material has been completed, feeding the liquid during a period longer than feeding of the solid particles, said longer feeding period being ended only when the feeding of solid particles has been ended, flushing wall surfaces of the tube with the liquid, and subsequently transversely flattening and sealing said packing material to form a packing container having said liquid and solid particles therein.
An arrangement for the feeding of liquid contents and solid particles during the manufacture of packing containers including devices for transverse flattening and sealing of a packing material tube extending substantially vertically and being filled with contents, as well as elements extending into the tube for the feeding of contents to the packing material tube, comprising, a first pipe for the feeding of liquid and a second pipe for the feeding of solid particles, the first and second pipes defining the feeding elements, a spreader element positioned at an opening end of the first pipe, the second pipe being provided with a valve arrangement including a valve cone located at a lower end of the second pipe and maneuverable between an open and a shut position, in the shut position the valve cone rests against a valve seat formed at the lower end of the pipe and the first pipe arranged to provide for delivery of the liquid along wall surfaces of the tube so as to flush solid particles therefrom.
Dependencies are inferred from the claim text.