FR2696417A1 - Container tray for various products - has sidewalls with end rails and reinforcing angle pieces formed by folding and retained by adhesive and staples - Google Patents

Abstract

The container has a body (1) with a base (4) and four sidewalls (5, 6) which are connected to each other by adhesive. Two end pieces are provided (3) with handrails (11). These are arranged parallel to the base and extended by long end tabs (13). The tabs are attached by either direct or indirect adhesion. The container is formed from a cut blank piece. Flat folds (21) are arranged at the ends of the small sides which re then attached by cold adhesive and staples to the long end manufactured in volume in this form. The longer sides are connected using the same technique as the angle pieces. USE/ADVANTAGE - For produce such as fruit and vegetables. Uses reduced amount of sheet material. Can be assembled automatically to five low unit cost.

Description

Packaging such as tray. crate. tray ... for packaging various products.

 The present invention relates to packaging, such as a tray, crate, tray ... in compact or corrugated cardboard, in extruded composite materials ... for the aerated packaging of various products such as fruits and vegetables.

 It relates more particularly to improvements made to known packages of the type of those which comprise, on the one hand, a body constituted by a bottom and four sides secured to each other by gluing, as well as two heads constituted by support bars or sidewalls forming one body with two short sides, extending parallel to the bottom and extended by extreme long ears fixed to the two long sides, by direct or indirect bonding, on the other hand, corner reinforcements fixed to said sides by direct bonding or indirect.

 The corner reinforcements of the packaging described in French patent application No. 91 12630 are formed by extensions of the short sides.

Each extension is folded to form an outer wing perpendicular to the bottom and an inner wing pressed against this bottom. Said wings are connected by a bias tape having a liner strip of width much less than that of the outer wing, said liner strip and outer wing being glued and stapled one on the other.

 Such packaging has many advantages. In particular, the assembly is reinforced and the crushing resistance when packages are loaded and stacked is improved. Furthermore, the assemblies are no longer liable to come loose. Production rates are increased significantly and the size of empty packaging is halved, which reduces the cost of transport.

 The present invention aims, while retaining the aforementioned advantages, to reduce the consumption of raw material and to facilitate the automatic execution of folding, gluing and stapling, which makes it possible to lower the unit cost of packaging.

 To this end, the packaging according to the invention comprises, as in the aforementioned patent, on the one hand a body constituted by a bottom and four sides joined together by gluing, as well as two heads constituted by support bars or sidewalks integral with two short sides extending parallel to the bottom and extended by extreme long ears fixed to the two long sides, by direct or indirect bonding, on the other hand, corner reinforcements fixed to said sides by direct bonding or indirect.

The invention more particularly resides:
- in that the raw cutting blank is prepared flat and comprises, along each lateral edge of each short side, a flat fold and in extension of the sidewalk of the short side considered long ears.

- in that the flat folds and the sidewalk are raised perpendicular to the corresponding small side and concomitantly, the long ears are folded down along the lateral edges,
- in that the flat folds and the ears are fixed to each other by stapling and / or gluing to form the abovementioned corner reinforcements,
- And in that the short sides thus prepared and the long sides are straightened perpendicular to the bottom, the short sides, their flat folds and their ears being fixed to the long sides either by stapling and / or gluing.

 Preferably, each flat fold has an outer wing and an inner strip or lining having substantially the same width. Each long ear has a height substantially equal to that of the flat fold of the corresponding corner reinforcement.

 According to a particularly advantageous embodiment, each long ear extends between the outer wing and the inner band or lining of the flat fold of the corresponding corner reinforcement.

 Various other characteristics and advantages of the invention will also emerge from the detailed description which follows.

 Embodiments of the subject of the invention are shown, by way of nonlimiting examples, in the accompanying drawing.

On this drawing:
FIG. 1 is a perspective showing a blank from which two particular embodiments of the packaging, according to the invention, can be placed in volume,
- Figure la is a view similar to Figure 1 illustrating a more economical blank from which the two aforementioned embodiments of the package can also be mounted.

FIGS. 2 and 3 are perspective views illustrating two successive phases of the preparation of the blank of the first embodiment of the packaging,
FIG. 4 is a perspective showing the volume setting and the final assembly of the packaging according to FIGS. 2 and 3,
FIGS. 5 and 6 are perspectives illustrating the successive phases of the preparation of the blank of the second embodiment of the packaging,
FIG. 7 is a perspective showing the volume setting and the final assembly of the packaging according to FIGS. 5 and 6,
As is apparent from FIGS. 1 to 7, the packaging is set in volume from a blank 1. It comprises a body 2 and possibly, depending on its destination: tray, tray, crate, heads 3.

 In the example shown, it is a plate having two heads 3 higher than the body 2, in order to provide between the body of an underlying plate and the underside of an overlying plate resting on the heads of said underlying tray, ventilation passages.

 The body 2 has a bottom 4 secured to two long sides 5 (Figure la) or 5a, 5b (Figure 1) and two short sides 6. Each short side 6 is extended, beyond vertical fold lines 7, by extreme tabs 8 separated from the long sides 5 by slots 9 and intended to constitute, after folding as indicated below, corner reinforcements 10 (Figures 4 and 7).

 Each head 3 has a support bar or sidewalk it extending parallel to the bottom 4 (Figures 4 and 7) and forming a body with the short sides 6 beyond a fold line 12. Each sidewalk 11 is itself same body with end ears 13 having substantially the same height as the corresponding short side 6, separated from the legs 8 contiguous by slots 14 and foldable each around an extension 15 of the corresponding fold line 7.

 In the example shown in Figure la, each long side 5 is simple, while in the example shown in Figures 1 to 7, each long side is double and consisting of two flaps 5a and 5b folded and optionally glued the one over the other.

 In these examples, each corner reinforcement 10 is constituted by a tab 8 and a long lug 13. The tab 8 is folded in two along a double line 32 in order to form a flat fold 21 (FIG. 2) comprising an outer wing 16 and an inner strip of lining 20 applied against each other.

 The height h.l of each long ear 13 is substantially equal to that h.2 of the corresponding flat fold 21. The width 1.1 of each long ear 13 is substantially equal to that 1.2 of the corresponding flat fold 21.

 The blank 1 thus cut and creased is prepared flat.

 According to the first embodiment illustrated in Figures 2 and 3, the flat folds 21 and the sidewalks i1 are raised perpendicular to the short sides 6, while the ears 13 are folded out against said flat folds.

 Hot glue can be deposited between the ears 13 and the outer wings 16.

 However, it may be advantageous to bond cold to reduce the cost, but the setting time is longer.

 In the latter case, in order to consolidate the assembly and increase the production rate by eliminating the downtime for consolidating the bonding, staples 22 are placed to connect the ears 13 to the outer wings 16.

 Stapling can also be performed without gluing, but the number of stitches is greater.

 The assembly of the packaging can be carried out from the blank 1 thus prepared (FIG. 3). It then consists, as appears from the comparison of Figures 3 and 4, to raise the short sides 6, then to raise the long sides 5, possibly cold glued beforehand opposite the corner reinforcements 13, 21, finally to install other staples 23 (Figure 4) ensuring the connection of these long sides with these corner reinforcements.

 According to the second embodiment illustrated in Figures 5 and 6, the sidewalks 11 are raised perpendicular to the short sides 6 and the long ears 13 are folded down along the fold lines 7 (Figure 5), then the flat folds 21 are formed on said ears by pressing their outer wings 16 against them and by folding their inner bands 20 so that the ears 13 are disposed between the outer wings 16 and the inner bands 20 (Figure 6).

 As before, the assembly is completed by the installation of staples 22 between the flat folds and the ears, which can be cold glued (Figure 6).

 The assembly is carried out (FIG. 7) as for the first embodiment by raising the sides and fitting staples 23.

Claims (6)

 1.- Packaging, such as tray, crate, tray ... in compact or corrugated cardboard, in extruded composite materials ..., for the airy packaging of various products such as fruits, salads and vegetables, comprising, on the one hand , a body (1) consisting of a bottom (4) and four sides (5, 6) joined together by gluing, as well as two heads (3) constituted by support bars or sidewalks (11) forming a body with two short sides, extending parallel to the bottom (4) and extended by extreme long ears (13) fixed to the two long sides by direct or indirect bonding, on the other hand, corner reinforcements (10) fixed to said sides, by direct or indirect bonding,  characterized ::  - in that the blank blank (1) for cutting is prepared flat and comprises, along each lateral edge of each small side (6), a flat fold (21) and, in extension of the sidewalk (11) of the small side considered, long ears (13),  - in that the flat folds (21) and the sidewalk (11) are raised perpendicularly to the corresponding small side (6) and concomitantly, the long ears (13) are folded down along the lateral edges,  - in that the flat folds (21) and the ears (13) are fixed to each other by stapling (22) and / or gluing to form corner reinforcements (10).  - And in that the short sides (6) thus prepared and the long sides (5) are straightened perpendicular to the bottom (4), the short sides (6), their flat folds (21) and their ears (13) being fixed on the long sides either by stapling (23) and / or gluing.  2.- Packaging according to claim 1, characterized in that each corner reinforcement comprises only a flat fold (21) having an outer wing (16) and an inner strip or lining (20) having substantially the same width ( 1.1, 1.2).  3.- Packaging according to claim 1 or 2, characterized in that each long ear (13) has a height (h. 1) substantially equal to that (h.2) of the flat fold (21) of the corresponding corner reinforcement .  4.- Packaging according to any one of claims 1 to 3, characterized in that each long ear (13) extends outside the flat fold (21) of the corresponding angle reinforcement.  5.- Packaging according to any one of claims 1 to 3, characterized in that each long ear (13) extends between the outer wing (16) and the inner band (20) or lining of the flat fold (21 ) of the corresponding corner reinforcement.  6.- Packaging according to any one of claims 1 to 5, characterized in that cold glue is used to connect the stapled parts.