Special receptacle or package – With indicator
Patent
1998-02-04
2000-05-23
Patterson, M. D.
Special receptacle or package
With indicator
2064595, 229187, 229194, B65D 8500
Patent
active
060656026
DESCRIPTION:
BRIEF SUMMARY
The invention concerns a method in connection with mounting block cartons in freezing frames and a block carton blank suited for this purpose, and by the invention there is aimed at improving the certainty for a correct mounting of these cartons in the frames. The invention has close relation to the invention indicated in WO 96/02422 published on Feb. 1, 1996, why reference is made to the problem indicated therein.
In short this concerns the use of the so-called block cartons for lining of freezing frames for receiving a fresh food material, e.g. of fish, which is desired to be frozen for creating an intermediate product in the shape of semi-sized, frozen blocks which are forwarded to factories for further processing. The block cartons are constituted of simple carton blanks, that are prepared with folding lines in such a way that they have a bottom panel corresponding to the size of the freezing frames and from this projecting side wall panels, which by the mounting of a carton blank in a freezing frame are naturally raised to upright positions along the inner sides of the frame. Normally, one of the longitudinal side panels are extended in a lid panel, which after the filling of the carton lining in the freezing frame may be swung inwardly over the filling, which in this way will be covered by carton on all side faces of the block. Thereafter the individual units are conveyed to freezing in a freezer of the shelf type, after which they may be knocked out of the freezing frames and stacked for shipment, presently with the carton wall panels as intermediate layers for preventing a total freezing together and besides that the carton blanks by themselves are totally stabilized by their freezing attachment to the frozen filling blocks. For the same reason the block cartons may be prepared without any special locking means in that they are supported and kept in place by their sideway abutment against the surrounding freezing frame and against a fixed bottom plate, respectively, and partly by the block freezing itself. Thereby the block cartons only have a few main features in common with the more commonly known, self-supporting carton packings with corner flap locks and glue joints.
It is desirable that corner flap extensions appear in connection with the side wall panels of the block cartons, which may be swung outwardly or rather inwardly at the corners for creating a blocking against an instant liquid and material leakage from the filling material through the corners of the block carton raised in the freezing frame. It is important that these corner flaps are folded inwardly to a position at the outside of the abutting side wall panel, in that a position at the inside may or will cause the corner flap to be more or less protruding into the frozen filling material, which makes the further processing of it very difficult.
While it is described in the embodiment in WO 92/02422 and corresponding U.S. Pat. No. 5,803,351, how it may be detected by a preceding colour marking of parts of the carton blank whether the inwardly folded part are correctly placed as seen from the outside of the final product, e.g. at the recipient of the products, the present invention focuses particularly on the discovery of faulty mountings even on the assembly stage.
On this stage it will apply, that the operator has a view to the inner side of the mounted block carton and thereby he may also easily ascertain whether the corner flaps are correctly folded indwardly, that is to say that if they according to the present invention are made with an inwardly facing surface marking, that makes them visually different from the inside of the adjoning side wall panels. Hereby the operator may readily perceive whether a corner flap is wrongly placed, so that this fault may be corrected already before the commencement of the filling of material to be frozen, i.e. by a primary control at the supplier.
This perception by the operator may principally be substituted by an automatic surveillance system, which optically inspects the internal outlook of
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Cartolit ApS
Lam Shian T.
Patterson M. D.
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