Case forming materials and components and structures thereof

Details Case forming materials and components and structures thereof Case forming materials and components and structures thereof

1995-09-28

1998-09-01

Elkins, Gary E.

Envelopes, wrappers, and paperboard boxes

Paperboard box

220443, 2291981, 229939, 229940, B65D 532, B65D 542

Patent

active

057998612

DESCRIPTION:

BRIEF SUMMARY
The present invention relates to improvements in and/or relating to case forming materials and components and structures thereof, including sub assemblies and total case defining assemblies.
Many forms of material including those based on cellulosic fibres, such as paper board (fluted or otherwise), are known from which cases, cartons or the like can be formed. The present invention relates to an improved panel forming assembly suitable for the forming of cases that has certain structural advantages over existing materials.
It is therefore an object of the present invention to provide a panel forming assembly, panels formed of that kind, components for a case using such panels including structural features (such as corners, tops and/or bases) thereof which will provide the public with a useful choice.
In a first aspect the present invention consists in a panel forming assembly comprising
a flute providing medium,
a liner for one side of said medium, and
a liner for the other side of said flute providing medium, wherein said flute providing medium is a corrugated board having a flute pitch and depth greater than that of "A" flute and preferably with a take up of about 1.54:1.
In a further aspect the present invention consists in a panel forming assembly comprising
a flute providing medium,
a liner for one side of said medium, and
a liner for the other side of said flute providing medium, wherein said flute providing medium is of a corrugated solid fibre board that has been heat formed to provide a flute pitch and depth greater than that of "A" flute.
In a further aspect the present invention consists in a panel forming assembly comprising
a flute providing medium,
a liner for one side of said medium, and
a liner for the other side of said flute providing medium, wherein said flute medium is formed of kraft liners sandwiching another or a similar source of cellulosic fibres and which has been corrugated in the presence of moisture, heat and pressure to provide structural integrity as well as forming the flutes thereof.
In a further aspect the present invention consists in a panel forming assembly comprising
a flute providing medium,
a liner for one side of said medium, and
a liner for the other side of said flute providing medium, wherein said flute medium is lined on one or both sides by a solid fibre board and/or a single, double or triple flute paper board.
Preferably the flute directions of any liner and/or the flute medium are in one of the arrays hereinafter set forth in Table I.
In a further aspect the present invention consists in a panel forming assembly comprising
a flute providing medium,
a liner for one side of said medium, and
a liner for the other side of said flute providing medium, wherein the flute medium is a corrugated board having a flute pitch of about 54 mm, a flute depth of about 27 mm and a take up of about 1.54:1.
Preferably said flute medium is of a cellulosic material such as a corrugated laminate of cellulosic fibre such as, for example, recycled paper as a core and kraft liners sandwiching the recycled paper fibres.
Preferably one or both of said liners of said flute medium is a solid fibre board and/or one or both of the liners of said flute medium is a fluted paper board such as, for example, a single, double, or triple fluted board.
Preferably the panel providing assembly is bonded together using an appropriate adhesive such as, for example, a PVA adhesive.
In a further aspect the present invention consists in a panel or panel forming material as previously set forth where one or both liners are not co-extensive with the flute providing medium and thereby defining a flap or flaps that is or are adapted (a) for lapping or lap joining with another structure or a like structure, (b) for providing a case forming connection to another structure, (c) for providing a case forming connection to a base or to provide a base thereof, and/or (d) upon folding, for bracing (e.g. as a beam) the top and/or bottom of a wall defined by the panel.
In a further aspect the present invention consis

REFERENCES:
patent: 1459017 (1923-06-01), Dean
patent: 2722366 (1955-11-01), Carlson
patent: 3922129 (1975-11-01), McDonald
patent: 4140564 (1979-02-01), Schrader
patent: 4601407 (1986-07-01), Gillard
patent: 5048689 (1991-09-01), McFarland
The Wiley Encyclopedia of Packaging Technology, John Wiley and Sons, pp. 66-68, 1986.

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