Envelopes – wrappers – and paperboard boxes – Paperboard box – A sidewall includes a horizontally or downwardly extending...
Patent
1997-12-29
1999-01-19
Elkins, Gary E.
Envelopes, wrappers, and paperboard boxes
Paperboard box
A sidewall includes a horizontally or downwardly extending...
229916, 229918, 229120, 229191, B65D 500
Patent
active
058605908
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to improvements in and/or relating to (containers) cartons, blanks therefor, related packs and methods of use.
The present invention relations to a pack formed from a paperboard (preferably a paperboard which is a laminate involving a fluted paperboard medium) which provides a stackable container where a top of one is indexable reproducibly into the base of another.
BACKGROUND ART
The present invention is an evolution of an indexing pack of a kind as disclosed in our New Zealand Patent Specification No. 237169 (U.S. Pat. No. 5,361,976) and Registered Design Nos. 25100, 25101, 25605 and 25604. The full content thereof is hereby here included.
DISCLOSURE OF INVENTION
The present invention however is directed to preferably at least a substantially lidless form capable of providing a stable stack of like containers with their loads where the weight is capable of being taken through the wall structures of such containers without any substantial passage of stress into the load of the containers themselves.
A pack form in accordance with the present invention is useful for fruits such as apples etc. It is therefore an object of the present invention to provide such containers, blanks, packs etc. or to at least to provide the public with a useful choice.
In a first aspect the present invention consists in a container formed from a blank, said container having
a rectangular base,
a flap sequence of two flaps (hereafter the "indexing wall flaps") from each of the longer sides of said base, a first flap being connected to the base by a fold line, and the second flap being connected to the first flap by a fold line preferably through bridge like regions), and wherein each indexing wall flap of each flap sequence has an extension beyond a fold-line or fold-lines (preferably one only) substantially normal to that of a said indexing wall first flap with the base and, in turn, that between two flaps (first and second) of the indexing wall flaps, and
a flap from each of the shorter sides of said base (hereinafter the "non indexing wall flaps"),
and wherein said base includes inwardly of the fold line thereof with its proximate indexing wall first flap a plurality of openings each to receive a projection formed by a folding (preferably of each bridge like region) of a like container at the fold line between the two indexing wall flaps of a like container,
and wherein said container is erected to a walled form with the indexing walls presenting a plurality of upwardly directed projections (preferably formed from said bridge like regions) of the blank and being indexable in through the openings of the base of a like erected container, said indexing walls being inclined inwardly slightly with the extensions of said indexing wall flaps adhesively attached one extension on either side of the closer up folded non indexing wall flap.
In some less preferred forms "rectangular" may approach or be "square".
Any mechanical equivalent to a bridge form projection can if desired be employed (eg; pop-ups from a fold line) but these will offer less certainty in indexing. Such a form has reduced adhesion, usefulness and overall strength.
Preferably said non indexing wall flaps are strictly vertical from the base.
Preferably said blank is of a laminate which includes a flute providing medium and the flute direction is such that the flutes extend substantially vertically in said indexing walls.
Preferably the extensions of each of the second flap of a non indexing wall flap sequence folds inwardly and is attached inwardly of a non indexing wall flap, and provides with part of the flap thereof (preferably between substantially parallel fold lines) a gusset feature at the corner.
Preferably a handle opening is provided through each of the two flaps of a flap sequence of each indexing wall.
Preferably each non indexing wall is provided with a recess from the upper extremity thereof to facilitate air flow through.
Preferably the angling in of the indexing walls is such as to provide a top to to
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Blomfield Gregory Thomas
Burgess Trevor Grant
Coe Robert William
Carter Holt Harvey Limited
Elkins Gary E.
Mai Tri M.
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