FR2589434A1 - PACKAGING TRAY - Google Patents

Abstract

THE INVENTION RELATES TO A PACKAGING TRAY. IT IS CHARACTERIZED IN THAT EACH PANEL 6, 6, 7, 7 INTENDED TO FORM THE SIDE WALL OF PLATE 1 HAS OVER THE ENTIRE LENGTH L AT LEAST ONE BENDING PRIMER 11 WHICH: - ON THE ONE HAND, EXTENDS SENSITIVELY PARALLEL ON SIDE 3, 3, 4, 4 OF THE BOTTOM THAT ADJUSTS THIS PANEL AND, ON THE OTHER HAND, IS LOCATED AT A CERTAIN DISTANCE D FROM THIS SIDE 3, 3, 4, 4 IN SUCH A WAY THAT WE CAN BY BENDING CONSTITUTE A SHUTTER 12 OF WHICH THE EXTERNAL EDGE 13 CAN, WHEN THE PLATE IS FILLED, BE TAKEN AT LEAST SENSITIVELY BELOW SIDE 3, 3, 4, 4 OF THE BOTTOM. APPLICATION TO PACKAGING MATERIAL.

Description

The invention relates to a packaging and in particular

a conditioning tray.

  In particular, but not exclusively, the invention relates to trays for shrink wrapping of food products. For grouping and packaging food products, mainly for transport, it is known to use trays that are generally in the form of parallelepiped boxes open on the top comprising a side wall and a generally rectangular polygonal bottom each of which sides is bordered by an outwardly inclined panel and connected at its end to the adjacent panels to make said sidewall rise until its upper edge is at a sufficient height from the bottom to

keep the articles.

  These trays are conventionally made by folding a

  pre-cut blank of corrugated cardboard, generally double-sided.

  To illustrate this technique, mention may be made of the patent

FR-A-2385591.

  Obviously, this type of parallelepiped plate and its analogues are easily storable when they are in their original form, ie in the form

a cardboard blank.

  However, once mounted, they can not be nested in each other, which requires for their storage and / or transport to have a relatively large volume. In addition, the number of operations required to mount such trays virtually excludes the fact that they can

  be mounted directly on their place of use.

  To remedy these drawbacks, it is known FR-A-2 242 872 to produce packaging trays partially mounted so as to substantially maintain a shape.

inverted truncated pyramid.

  If such trays can thus fit at least partially during transport and storage, they still require expensive manipulations to complete their

front assembly filled.

  Whether they are of generally parallelepipedic shape or advantageously in the form of an inverted truncated pyramid, these trays are often intended either for the transport of fruits and / or

  vegetables, either to transport pots and / or boxes.

  Independently of a bottom covering such as a padding, they generally require internally a means of wedging, such as an adequate partitioning, which separates the articles, the

maintains and protects them.

  Unfortunately, unless it is removable and therefore requires a special operation to be placed in the tray before filling, this means of setting items

  constitutes an obstacle to stacking said trays.

  Of course, in order to keep the articles in their packaging trays during transport and / or storage, independently of the setting means, it is known to use an overpack under a sheet of shrinkable material, in particular heat-shrinkable plastic such as polyethylene. and which, by retracting, encloses the assembly formed by the tray and the articles and maintains said articles bearing against each other and against the bottom of said tray. Naturally, for the overpack to be able to act on the articles, it is necessary that they have a height greater than that of the side wall of the plate and especially, for it to give good results, it is necessary that the juxtaposed articles occupy overall in the tray all the useful surface of said tray and come into contact with its side wall so that under the embrace of the overpack,

  the whole reaches a certain cohesion.

  On the other hand, on the one hand, when the articles such pots and / or boxes can not, given their dimensions, be stored in sufficient number to, being closely juxtaposed, perfectly fill the tray and thus be in contact with its wall lateral, or, a fortiori, a fortiori, when the side wall of said plate is inclined and thus has no contact with the side wall of the articles, the assembly formed by a tray of known type and the articles ,

3 2589434

  even taken in an overpack of the above type, has only too weak a cohesion to be handled and stacked

without risking falling apart.

  A result that the invention aims to obtain is a conditioning tray which, while having during storage before use a globally truncated truncated pyramidal shape and therefore an outwardly inclined side wall, allows without requiring before use of other assembly operations, iarantir a perfect stalling and maintenance of articles between them when the assembly is contained in a overwrap of hot and cold retractable material with or without adjustment

a lid.

  Another result that the invention aims to obtain is a conditioning tray which allows in certain measures to maintain perfectly between them groups of articles having positioning differences on the plate and / or

congestion gaps.

  Other results will become clear in the

description that will follow.

  To this end, the subject of the invention is a conditioning tray of the aforementioned type comprising a lateral wall and a generally rectangular polygonal base, each side of which is bordered by an outwardly inclined panel and connected at its ends to the panels. contingus to realize the said side wall which rises until its upper edge is at a sufficient height of the bottom to hold the items, this tray being characterized in that each of the panels adjacent to one of the sides of the bottom: - on the one hand, comprises over its entire length at least one niaoe primer which extends substantially parallel to the side of the bottom adjacent to this panel and is located at a distance from the bottom side and the upper edge so as to split chaoue nanneau in two successive parts including an upper flap located between this fold initiation and the upper edge and a lower flap located between the side of the bottom and the said amo on the other hand, is only connected to the contiguous panels in the part of its height corresponding at most to that of the lower flap, so that the upper flap remains free to bow outwardly, during wrapping, and towards the inside of the basket, with the articles to which the upper edge can then be brought to come at least substantially vertically to the bottom side than adjoins the panel considered.

  It will be well understood using the description

  BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view of the blank for the production of the tray according to the invention. FIG. perspective of a mounted tray ready to be stored, delivered and / or filled, - Figure 3: a sectional view along a transverse plane of a tray having received its load and overpacked by a

sheet of retractable material.

  Referring to the drawing, it can be seen that the conditioning tray 1 according to the invention is constituted by folding, gluing and / or stapling of a blank 2 cut from a sheet (not shown) of any suitable material in which are printed according to continuous or discontinuous lines of the primers

folding 3, 4, 11, 20, 21.

  Notably but not exclusively, the tray is made of cardboard

double-sided corrugated.

  As can be seen in FIG. 1, in the blank 2, the folding primers make it possible to distinguish different parts, first of all a bottom 5, of polygonal and in particular rectangular shape, delimited in this example by four folding lines 3a, 3b ' 4a '4b realizing the sides of the bottom and therefore

  parallel two by two and perpendicular to the others.

  Each of these sides of the polygonal bottom 5 of the plate 1 is

  bordered by a panel 6, 6b '7a' Tb.

  Classically, these panels 6, 7 are intended to be

  raised to form the side wall 8 of the tray.

  In known manner, at each vertex of the polygonal bottom 5, the rings 6, 7 are longitudinally delimited by two lions 9, 20 converging at a slight inclination towards the direction of the sides 3 and 4 of the bottom 5 of the

  f1teau 1 yes are adjacent to this soniet.

  Preferably, the rings 6a 6b 7a 7b have the same height b "a b" Ont'n- mm height "H", lauelle is Also substantially constant

  over the entire longitudinal dimension "L", "1" of said panels.

  This height "H" is sufficient for its upper edge 13 to maintain the articles 14. In known manner, at each top of the bottom 5, one of the panels 6a or 6b and 7a or 7b is, beyond the line 9 or 20 delimiting it longitudinally, bordered by an ear 10, separated from the other panel 7a or 7b by a cutout 9 or at least by a pre-cut line 9 which in addition delimits

  longitudinally this panel 7a Or 7b.

  As can be seen in FIG. 2, it can be seen that, after lifting, the ears allow the panels 6, 7 to connect these panels together at their ends by any known means, such as by stapling and / or gluing each ear.

  on the inner side of the rings 7a '7b.

  This locks the panels in the raised position.

  But this is known from the prior art.

  Also known, the side wall 8 of the plate 1 has a depth of several degrees relative to

  vertically, which empty allows stacking trays.

  According to the invention, each panel 6a, 6b, 7a '7b adjoining one of the sides 3a 3b 4a 4b of the bottom of the plate 1: - on the one hand, has along its entire length "L", "1", at least one line of weakness ll or folding leader, which extends substantially parallel to the side 3, 4 of the bottom adjacent this panel and is located at a distance "d" of this side 3, 4 and "d" of the upper edge so as to split each ring 6a, 6b '7a' 7b into two successive flaps 12, 19, including a 3I upper flap 12 located between this folding primer 11 and the upper edge 13 and a lower flap located between the said folding primer 11 and the side of the bottom 5 and - on the other hand, is connected to the contiguous nannels only in the portion of its height corresponding at most to that of the lower flap, so that the upper flap 12 remains free to bow both outwardly when stacking and towards the inside of the tray after filling with items 14 to which s the upper biord 13 can then be brought up to come at least breastsi it is in line with the side 3a 3b 4a 4b of the bottom that

adjoins the panel considered.

  As it appears in FIG. 3, when the tray is loaded with articles 14 such as pots and / or cans, then it is contained in an overwrap 15 made of heat-shrinkable material when hot or cold, under the embrace of the overpack, the shutters 12 are articulated around the folding primers 11 splitting the rings in two parts until their upper edge 13 comes into contact with the lateral face of the

Articles 14.

  In this way, the cohesion of the whole formed by the

  platter and items is virtually perfect.

  Although this is not shown, the panels 6as 6b, 7a, 7b can obviously have a height "H" sufficient for that, while adjusting the distance "d" determining the position of the fold line 11, at the height of articles 14 to arrange on the plateau, we can thanks to the upper shutters 12 close

  the said tray in the manner of a box.

  In order to ensure that the corners of the ears 10 belonging to perpendicular walls do not generate the folding of said upper flaps towards the inside of the tray, the ear can be cut so as not to exceed the limit of the lower flap or to present herself a folding starter

supplementary 21.

  According to the invention, so that, similarly, the ends of the upper flaps do not interfere with each other,

  the corners 18 of each flap are broken.

  Although it does not appear. in the figures, the panels 6a "6b '7a' 7b forming the side walls 8 may have any appropriate local cut to allow the housing of a part of the base of articles whose packaging would initially require a tray of

  slightly larger dimensions.

  Naturally, the method of manufacturing such a tray is not described since it is within the reach of those skilled in the art

with adequate equipment.

7 2589434

  It should be noted that, by being folded inwards, the flap partially compensates for the clearance of the side wall, so lacuelle does not appreciably increase the space requirement.

trays filled.

  This nDli also greatly enhances the panels which,

  longitudinally, remain perfectly straight.

  Advantageously, the packaging disk of the invention may be reused several times, subject to

  of course the strength of the material that constitutes it.

  0 Thus, after use, the trays can be easily stacked again, without complex manipulation, the flaps easily recovering their initial position in the plane

side walls.

  Of course, the product we just made

  description as a non-limiting example may be subject to various

  modifications without departing from the scope of the invention.

Claims (2)

  1. An inverted truncated pyramid-shaped conditioning tray (1), which tray is formed by folding, collapsing and / or stapling a blank (2) cut from a sheet of suitable material such as cardboard, comprising a side wall ( 8) and a polygonal bottom (5), generally rectangular, of which each of the sides (3a, 3bb 4a '4b) is bordered by an inclined panel (6a) 6b, 7a, 7b) towards the outside and connected at its ends to the contingency panels for producing said side wall (8) which rises until its upper edge (13) is at a sufficient height (h) from the bottom (5) to hold the articles (14), each panel being longitudinally delimited by two lines (9, 20) converging with a small inclination towards the intersetion sides (3a '3b, 4a' 4b) of the bottom (5), this tray being CHARACTERIZED in that each panel (6a, 6b '7a' 7b) adjoining one of the sides (3a '3b 4a' 4b) of the bottom of the plate (1): - on the one hand, compor throughout its entire length (L, 1), at least one line of least resistance (11) or fold initiation, which extends substantially parallel to the side (3, 4) of the bottom that adjoins the panel and is at a distance of certain distance (d) from this side (3, 4) and (d ') of the upper edge so as to split each panel (6a, 6b' 7a, 7b) into two successive flaps (12, 19), including an upper flap (12) located between this folding primer (11) and the upper edge (13) and a lower flap located between said folding primer (11) and the side of the bottom (5) and, secondly, n ' is connected to the adjoining panels only in the portion of its height corresponding at most to that of the lower flap, so that the upper flap (12) remains free to tilt both outwardly during stacking and towards the interior of the tray after filling with the articles (14) to which the upper edge (13) can then be brought to come at least substantially in line with the side (3) a, 3b, 4a, 4b) from the bottom that adjoins the panel considered. 9 2589434   2. Packaging tray according to claim 1 characterized in that, for the ends of the upper shutters do not interfere with each other, the corners (18) of each shutter are broken.