Envelopes – wrappers – and paperboard boxes – Paperboard box – Flexible or flaccid – internal – non-bag lining formed from an...
Patent
1989-06-13
1990-12-04
Elkins, Gary E.
Envelopes, wrappers, and paperboard boxes
Paperboard box
Flexible or flaccid, internal, non-bag lining formed from an...
206427, 229 40, 229915, 229DIG11, 53 48, B65D 520
Patent
active
049747738
DESCRIPTION:
BRIEF SUMMARY
This invention relates to cartons or crates for packaging of goods for transport and storage, and more particularly to an improved cardboard crate of the disposable type which has considerable inherent strength so as to facilitate stacking a number of packaged crates. The invention has particular utility as a crate for plastic milk containers or cardboard milk cartons but needless to say it may be used for other purposes.
Conventional crates, that is open top containers for transporting goods, in one form, are moulded of plastics material and consequently are relatively expensive to manufacture. The initial cost of manufacture is presumably offset by the fact that the crates are reusable but experience in the dairy industry, where such crates are used to transport milk containers, has shown that the on-going costs of collecting, handling and washing the plastic crates as well as replacing crates which are lost, damaged or stolen, far outweigh the advantages of a reusable crate. Thus plastic milk crates are a very expensive component in the overall cost of transporting and storing milk or milk products.
Accordingly it is an object of this invention to provide an improved disposable type crate for packaging goods, which crate has inherent stacking strength and is suitable for use as a crate for transporting milk or milk products in a manner overcoming one or more of the aforementioned disadvantages of known plastic milk crates.
The invention thus provides a blank erectable into a crate, said blank including a first panel for forming a base of the crate and a plurality of further panels which extend from said first panel for folding to form generally upright peripheral walls of the crate, characterized in that, an opposite pair of said further panels provide end walls and each end wall includes an extended portion which is foldable for forming a horizontal ledge which projects inwardly of the crate and an upward extension of the respective end walls, said ledges being below said upward extensions and providing support for the base of a like crate when stacked thereon.
Another form of the invention provides a disposable crate for packaging goods for transport and storage, said crate being a generally rectangular box having a base , peripheral walls and an open top, characterized in that, a first pair of opposed walls comprise end walls and each have an upward extension extending above the height of the other walls and a box structure or girder is arranged on the inside of each of said end walls, said box structure or girder including a horizontal ledge arranged at a height above the said height of said other walls to provide support for the base of a like crate when stacked thereon.
In order that the invention may be more readily understood one particular embodiment will now be described with reference to the accompanying drawings wherein:
FIG. 1 is a plan view of a crate blank for forming a crate according to the invention,
FIG. 2 is a side elevation of the blank shown in FIG. 1,
FIG. 3 is a perspective view from above of a crate formed from the blank of FIGS. 1 and 2,
FIG. 4 is a perspective view from below of the crate formed from the blank of FIGS. 1 and 2,
FIG. 5 is a side elevation of the crate,
FIG. 6 is an end elevation of the crate,
FIG. 7 is a sectional side elevation of the crate taken on the line 7--7 of FIG. 3 and shows liquid containers packaged in the crate as well as the relative positioning of the crate for stacking on top of a further similar crate.
The crate according to this embodiment is formed from corrugated cardboard which is cut to the shape shown in FIG. 1 and has a number of cuts and score lines formed thereon to facilitate folding of the crate into the shape shown in FIGS. 3-6. In FIG. 1 the broken lines represent score lines for folding of the crate and the continuous lines indicate cuts completely through the cardboard. The corrugations in the cardboard from which the blank is made are arranged to run in the longitudinal direction of the blank, that is, in the vertical direction o
REFERENCES:
patent: 2588455 (1952-03-01), Adams
patent: 3014635 (1961-12-01), Mairs et al.
patent: 3425544 (1969-02-01), Ayer et al.
patent: 3580475 (1971-05-01), Mobley
patent: 3704823 (1972-12-01), Howe
patent: 3784082 (1974-01-01), Hurlock
patent: 4607750 (1986-08-01), Valenti
"Industrial Packaging", Walter F. Friedman et al., p. 157, John Wiley & Sons, 1960.
Alexander Kenneth G.
Bower Gordon E.
Alexander Packaging Equipment Pty. Ltd.
Elkins Gary E.
Fibre Containers Pty. Limited
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