Envelopes – wrappers – and paperboard boxes – Paperboard box – Miscellaneous joint construction
Patent
1997-01-17
1998-09-08
Elkins, Gary E.
Envelopes, wrappers, and paperboard boxes
Paperboard box
Miscellaneous joint construction
116201, 156378, B65D 542
Patent
active
058033513
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a method of detecting an incorrect mounting or closing of packings of the carton liner type as used for packaging fresh food products to be frozen in freezing frames. Such liners, preferably with a coating of paraffin wax or the like, are used extensively in the fishing industry for the formation of relatively flat and broad blocks of fish, fish fillets or minced fish to be shipped to industrial users. The liners are made as quite simple blanks, with a bottom panel having four raisable wall flaps, of which a rear flap is continued in a lid panel also having wall or skirt flaps along its three free edges. Optionally, the front and rear wall flaps of the bottom panel may be laterally extended into corner flaps serving to improve the closure of the corners of the blank, when mounted in a frame.
The liners are used in connection with so-called freezing frames, having a rectangular opening accommodating the said bottom panel, which is simply forced down into the frame opening, whereby the wall flaps are easy to raise. The lid panel is left swung out from the lower box or tray portion as now erected and shape stabilized in the surrounding frame unit, and then the tray portion is filled with the relevant material. Thereafter the lid is folded inwardly over the tray, and the skirt flaps of the lid are folded down and introduced into the respective narrow spaces between the inside of the frame unit and the outsides of the raised tray walls. Then the entire assembly is passed to a freezing system of the shelf type. Once frozen, the liners with their block contents are ejected out of the freezing frames and delivered to a cold storage or a refrigerated van, while the frames are reused.
The industrial users of the relatively large blocks, typically measuring some 48.times.25 cm, peel off the liners and process the pure material blocks in frozen or temperated condition.
In closing the liners it is important that the lid skirt flaps are handled as mentioned, i.e. so as to be located at the outside of the tray walls. If, by mistake, one or more of them are lowered at the inside of the associated tray walls, they are likely to be introduced into the material filling out the tray portion, and get stuck therein by the subsequent freezing, whereby they are liable to remain in the frozen block material after the peeling off of the liner, i.e. they will be present, more or less invisibly, in the material to be processed. The same will apply to the said corner flaps, if used. Also these flaps should be folded so as to be located at the outside of the respective raised tray walls. The raising and closing work is normally effected purely manually, and since a high operation capacity is required the operators can rather easily make mistakes in the discussed respect.
Attempts of using auxiliary measures against such mistakes have generally failed, so far it is accepted that the manual handling of the liners will be associated with some kind of waste, and all what can be done is a visual inspection of the liners as released from the freezing frames. Such an inspection, however, is difficult and time consuming to carry out, because it is not readily ascertainable which flap is overlying another flap, so still a relatively high percentage of customer complaints has been found unavoidable.
According to the present invention, however, it has been recognized that in view of the specified conditions it is relatively easy to arrange for a very clear indication of `which flap is covering which`, viz. in adding to the liner blank a colored or otherwise visually differentiated marking of such blank sub areas, viz. the outsides of the innermost tray sides, which have to be externally covered by the lid skirt flaps, such that an inspection from outside will readily show whether the outwardly exposed flap surface is authorized or not.
According to the invention it will even be possible to arrange for an automatic detection of the outermost flap portions having the right color or characteristic to be accepted as a
REFERENCES:
patent: 1843234 (1932-02-01), Karnes et al.
patent: 3533548 (1970-10-01), Taterka
patent: 3616898 (1971-11-01), Massie
patent: 4578052 (1986-03-01), Engel et al.
patent: 4684023 (1987-08-01), Cortopassi
patent: 4704034 (1987-11-01), Takenaka et al.
patent: 5042653 (1991-08-01), Ems
patent: 5103979 (1992-04-01), Hustad
patent: 5234732 (1993-08-01), Versic et al.
patent: 5249550 (1993-10-01), Hines et al.
patent: 5427266 (1995-06-01), Yun
patent: 5528925 (1996-06-01), Sherepa et al.
Cartolit ApS
Elkins Gary E.
Safran David S.
LandOfFree
Method of detecting incorrectly closed freezing frame liners, an does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of detecting incorrectly closed freezing frame liners, an, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of detecting incorrectly closed freezing frame liners, an will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1274410