FR2530226A1 - INTERIOR TRAYS FOR PALLET LOADS - Google Patents

Abstract

THE SUBJECT OF THE INVENTION IS TRAYS FOR PALLETIZED LOADS OF FRAGILE ARTICLES SUCH AS GLASS CONTAINERS. THESE TRAYS ARE CONSISTED OF A SHEET WITH IMPRESSIONS 3 RECEIVING ON THE ONE HAND THE RING OF THE SPOUT 6 OF THE CONTAINERS OF A LOWER BED, ON THE OTHER HAND OF THE CONTAINERS OF A TOP BED, IMPRESSIONS THAT THEIR PROFILE PROVIDES TIGHTENING BETWEEN THIS RING AND THIS BASE, THIS ONLY ALONG A DOUBLE LINE 3A, 3B CORRESPONDING TO THE EXTERNAL EDGE OF THE BOTTOM, THE TALON 7 OF THE CONTAINERS, HOWEVER, LAYING ON ITS SURROUND BUT ONLY IMPOSING ON IT A MINIMAL ELASTIC DEFORMATION. THE IMPRESSION FORM A NIPPLE SURROUNDED BY AN ANNULAR SEAT 2A AND THE TOP OF WHICH IS CARRIED IN REDAN A CIRCULAR CROWN 10 WITH A CLEARANCE SHAPED BY A BUTTON 12 IN LIGHT PROJECTION. THIS TRAY ALLOWS THE TRANSPORT OF ARTICLES WITHOUT DIRTING OR MARKING THE DRUMS, ESPECIALLY WHEN THESE ARE DECORATED.

Description

INTERIOR TRAYS

FOR PALLETIZED LOADS

  Even called dish, the bottom of the glass containers has a certain concavity, so as to create a heel that ensures a regular peripheral reach capable of giving them good stability, sufficient even for it to be possible to stack these containers, jars for example, in several beds separated from each other by relatively soft spacers, usually made of corrugated cardboard plates Such a method can store them when they are full and mouths but already, before use,

  while they are still empty and open.

  To constitute your load, it suffices, after having deposited a

  first bed on a pallet, to cover it with a plastic interlayer

  tone to be able to pose a new one and so on, in order to create

  a lot which, finally protected and surrounded by a plastic cover

  that retractable, can then be transported from one stage to another of manufacture, but also during the sale and for the purpose of delivery,

therefore over quite large distances.

  It is thus possible to form large batches and, for example, to ship bottles of 20 to 150 cl per pallet of 6 beds of 100 to 400 bottles, which can also be stored

  three heights, that is to say in piles of more than 6 meters.

  cardboard tercalaire is a low cost, it should be noted that it tends to take moisture which makes it too tear and that, dirty and marked by its use, it can not be reused

  but only sold to papermakers who recover the material.

  The solution that has just been described rests on the fact that the bottles, arranged side by side in staggered rows according to a network on the

  more often triangular are tight against the barrel

  pulling the cover, which gives the package sufficient cohesion;

  but it follows that during transport and under the influence of

  these, these bottles rub on each other, which at least locally deteriorates their surface This disadvantage is acceptable on products of average quality if the transport distances are not

  not excessive but any other case requires additional precautions.

  that lead to spacing the containers of each bed, this in practice according to a square mesh: it is clear that the stability of the load then becomes all the easier to obtain as these containers

  narrower, which leads in particular, if they are bottled

  separating them by cardboard braces which hold them in place with a certain lateral tightening before the cover is fitted

as after his abduction.

  This solution gives satisfaction in terms of quality

  but it is expensive on the one hand because of the additional consumption of

  cardboard it causes, on the other hand because of the hand

  it requires, particularly in the case of decorative bottles.

  stained or satined which frequently have to undergo several stages of trans-

  port between their successive finishing operations.

  That's why many attempts have been made to

  to provide a simpler solution through the use of an intercalated

  re of nature to maintain the articles spread according to a well-known principle for the packaging of fragile objects, using a combination of housing intended to receive on the one hand the lower part, on the other hand the high part of these objects, in this case the base and the neck

bottles.

  We have tried to use reusable trays

  thermoformed plastic, or even plates of composite structure

  for example sheets of plastic and corrugated cardboard.

  However, these attempts have been unsuccessful:

  The simplest trays proved to be incapable of

  sufficient capacity for stacking bottles which tends to

  as soon as the cover is removed and also fail to prevent mutual erosion of the tray and bottle necks during transport The more elaborate, without overcoming all of this difficulty, join the disadvantage of 'a cost

  too much 6 lifted because they deteriorate quickly with use.

  The purpose of the invention is therefore to provide interleaves

  able to handle fragile items and in particular

  to bind glass articles or containers such as high-quality bottles, by large loads such as pallets containing up to 4,000 bottles in bunk beds in which these articles are spaced from each other, loads capable of undergoing storage

  in batteries and transport over long distances without the risk of

  deterioration or collapse when the cover is opened.

  This interlayer will simply consist of a sheet of material of substantially constant thickness, of the order of one millimeter, formed so as to carry reliefs capable of immobilizing the articles to the desired spacing To be reusable, it will be advantageously constituted of a thermoformed thermoplastic material, polyethylene for example Its use will make it possible to operate with great simplicity, as much to constitute the charges as during the resumption of

  articles, so to work quickly, and if necessary so

  essentially automatic, that is to say with a great economy of manpower.

  An interlayer according to the invention will be provided with a light step

  is greater than the maximum diameter of the receptacles,

  to come into contact with clamping both on one side with the ring of those of the lower bed and on the other with the base of those of the upper bed, this only along a double line corresponding to the only outer edge of the upper lip or drinking from the neck, the

  the heels of these receptacles, however, resting on the periphery of the

  but only imposing minimal elastic deformation.

  For this purpose, the profile of each impression, although

  the housing of the lower container a housing provided with an enlarged inlet, will fit, in the space between two superimposed containers, closer to the profile of the base of the upper container: pref 6 ence, this imprint will form on the upper face of the plate a nipple connected to an annular seat and whose top will carry a circular redan interior diameter adapted to that of the ring of

  inferior receptacles, with a central clearance which leaves no room for

  that a peripheral ring of width less than that of the rim and, preferably, a rounded nose radius of curvature at least equal to that of the outer rim of the rim; the crown will be, relative to the seat above which, centered on the nipple, is then placed the lower bearing of the heel, at a height in principle just lower, given tolerances, that of the party Corresponding base The footprint thus draws down a cell which offers scope to the ring only on its outer edge,

  in front of which will come to rest the base, whose heel will find

  with a secondary contact on the ring base.

  To allow the necks of the containers of a first bed of

  self-centering on fingerprints when they are

  of a plate, the inclined portion of the nipple or the conical portion of the footprint will have a slope greater than the coefficient of friction of the glass on the material of the interlayer, that is to say in practice to all the less than 20%, and sufficient diameter; the base of the nipple connects to the bottom either directly or at least through a cylindrical lousing device, or on the contrary by an asymmetric groove compensating for its possible height excaa.

  The impressions will advantageously be separated by a

  moles forming on the upper surface of the dwellings

the pellets of the receptacles.

  Two examples of trays according to the invention will be

  Crits below with reference to the figures which show: - Figure 1: in top view, the angle of a square mesh tray; FIG. 2: a section of this plate along the line II-II of FIG. 1, with a broken away portion; FIG. 3 a section of the plate along the line III-III of FIG. 1; Figure 4 a detail of the clamping ring according to IV of Figure 3 Figure 5: in top view, the angle of a triangular mesh tray; Figure 6: a section of this plateau along line VI-VI of

Figure 5.

  FIG. 1 shows a plate 1, made of polypropylene, with a thickness of 0.8 mm, the bottom 2 of which bears circular impressions 3, in relief in a square mesh that can range from 80 to 120 mm approximately.

  for bottles of 75 el, 9 to 11 rows of 11 to 14

  For example, they are separated from each other.

  others by quadrangular quadrants 4 arranged in staggered rows.

  A flange 5 connecting projecting elements 4 'whose shape reproduces

  partially that of the moles 4 stiffens the entire plateau.

  As can be seen in the section of FIG. 2, each tray, intended to serve as an interlayer between two beds of 75 cl bottles with a stung bottom, will rest on the necks 6 of the bottles of the lower bed and will in turn receive the peripheral lower reach or heel 7 of the caps of the bottles of the upper bed, the impressions 3

  lodged in the space left free by the sting 8

  preintes are formed 4 of nipples of frustoconical general shape of which

  the X axes are spaced a distance slightly greater than the diameter

  bottles, thus avoiding the risk of these

to touch each other.

  The top of the tapered wall 9 of the nipples bears in redan a crown 10 which has a rounded nose 11, their upper face

  forming a knob 12 at 14 protrudes through a narrow conical wall

  13, while at their base is a cylindrical trimming 14 of low height around which the bottom 2 constitutes a ring base

horizontal 2 a.

  As best shown in the detail of FIG. 4, the rounding of the nose 11 is preferably connected to a rounded edge 15, to form a

  narrow vertical belt whose internal diameter adjusts without friction

  to that of the ring and it has internally a radius of

  curvature r, greater than that of the external rim of the rim of a quantity

  at least equal to the diametric clearance tolerance and preferably

  the double order; in practice, this radius can reach 1.5 mm.

  The imprint thus forms down a cell able to lodge on

  the ring by enclosing it in the corner to secure the diver-

his bottles from the lower bed.

  The knob 12 has a diameter greater than that of the inner ridge of the rim and thus allows the bottom of a narrow portion 16 placed, above the seat 2 has a height h less than a few tenths of a millimeter at the height p that the puncture has the right of the nose 11, and a width quite significantly lower than

the thickness of the lip.

  The base radius of the nipple is at least about 1 cm greater than that of the ring of the bottles, whereas the slope of its wall 9, in any case greater than 20%, preferably corresponds to an angle of 30 to

   , its total height thus reaching 0.5 to 1 cm approximately.

  The main purpose of trimming 14 is to facilitate the manufacture

  cation of the mold but also increases the plane surface belonging to the

bottom 2, so its flexibility.

  As can be seen especially in the section of Figure 3, the

  4 have four spans 17, vertical (with the spoils of

  brication near) or a profile corresponding substantially to that of the bottom of the bottles These ranges are preferably of revolution, four to four, around the X axes They are advantageously connected to the bottom 2 by rounded portions 17a and can have inputs rounded 17 b At the four corners of each mole, they are limited by cut sides 18 which, to avoid brutal forms, also have connections 18 a and if necessary 18 b, which, in the case

  present, generates on the bottom, from one mold to another, a rib 19.

  Without being strictly essential, the m 6 the 4 contribute

  center the bottles-when they are laid and then hold them in place

  this; with the ribs 19, they also increase the overall stiffness of the trays by preventing the surface of these trays from presenting any

not rectilinear portion.

  To constitute the load, a pallet is placed on a pallet

  first tray and then, at the appropriate spacing, a first

  series of bottles that are housed between the moles 4 in

  approximately on footprints 3 and cover the bed

  form 4 of a second plateau identical to the first: thanks to

  conical tracts formed by the walls 9 of the nipples, the necks of the bottles themselves come to fit on the cells defined by their crowns 10, which secures these bottles The outer rim 6 has the rim comes to bear diagonally in 3 a in the rounded nose 11, the seam of the ring mold, which is usually on its inner edge 6 h coming on the contrary not in contact with the plate but being placed inside the free space created by 4 button 12, as well

as shown in Figure 4.

  In turn, the bottles are deposited from the second bed, whose heel then comes into contact with the seat 2 along a line 2b: the weight of each of them is enough to make the area of support, due

  of its flat shape, and this until the sting, catching up with the

  The height difference that originally existed in this zone, in turn comes to bear in 3 b at the nose 11, without, on the other hand, its top presses the button 12 This completes centering the bottle on the circular impression 3, the force exerted on the angle, along the double line of contact 3 a-3b, while any possibility of additional deformation of the plate whose subsequent release could cause the collapse of the load is prohibited in

  vertical direction If, however, the height h was greater than the height

  corresponding driver p, he would cease to have a full range of heels along the secondary contact line 2 b and the stability of the

  bottles on the tray would quickly become insufficient.

  The phenomenon is reproduced for the laying of the third bed and so on, so that the bottles are stacked in rigid columns inside which they are separated by the

only thicknesses of the trays.

  Finally, we put a last plateau, intended to secure the

2-530226

  bottles of the upper bed, then a cover whose retraction creates

  then a sufficient tightening, vertically to immobilize the

  of each column, horizontally to hold together the successive trays, the system leaving in the latter direction a certain elasticity The load can thus withstand without inconvenience

  accelerations or lateral shocks caused by transport.

  Whether bare, coated or even decorated, no lateral abrasion of the barrels occurs because there is no contact between the bottles of the same bed There is no abrasion on the drinking since the internal seam of the ring mold remains free and the oblique tightening along the same line eliminates any possibility of vibration and sliding at the contact points We would obtain a similar result with bottles whose ring mold would be in two parts, the transversal seam that they possess coming then

  very locally to lodge in the material at the level of the line of con-

  tact 3 has no possibility of subsequent slips.

  We also see that the constitution of the load as the recovery of successive beds of bottles are done almost as on conventional pallets where we use cardboard trays, except that the bottles are held laterally during each

  stage of the operation; handling is therefore at least as easy

  to automate them only in the classical solutions according to which stability is obtained by direct contact of the bottles of each bed, and much more than in those which resort to indirect contact

  with the interposition of lateral dividers such as braces.

  It should be noted that the mesh could equally well be

  gular, or the shape of the nipples deviate from the circular shape, to load oval, square or flat bottles etc with

  need more complex nesting.

  FIG. 5 shows, in a variant, bottles 20 placed on a plate 21 whose bottom 22 carries circular impressions 23

  and separation poles 24, 24 'arranged in a triangular mesh.

  re, which, as we know, has the disadvantage of complicating a little handling of bottles, but in return allows to obtain

more compact loads.

  Its general structure will not be described again in all its details, because it is similar to the previous one but it is intended to receive bottles with bottom "flat" (in fact and of course this bottom is very slightly entered and presents a concavity of the order of

  a few millimeters); its footprints 23 can not therefore be identi-

  As shown in Figure 6, however, they retain a very similar shape: each essentially comprises a nipple 25 crowned with a redan 26, but in its top simply opens a cut 27; here again the impression thus forms downwardly a cell whose wall is carried along a line 23a on the only outer edge of the rim of the bottles of the lower bed, while being connected to a conical wall 28, inclined to 30, which serves to guide the necks during the installation of the interlayer However, the total height H of the nipple is necessarily greater than the depth p of the retracted portion 29 of the base of the bottles of the upper bed: for this reason, the bases annular 22 constants by the bottom 22 are connected to the wall

  taper 28 not directly or through the sole

  rage with cylindrical wall as in the previous case but on the contrary

  by a groove 30, so that the total height h of the impression

  above the bottom is reduced to a value slightly less than the depth p of the concavity of the base To make it more rigid in compression but more flexible in flexion with respect to the line

  23, the groove 30 is advantageously provided with a relative wall

  vertically 31 and a flat bottom 32 giving it a sensory profile.

trapezoidal.

  When setting up the load, placing first on a puck-

  a first plateau, the latter rests there by the interns-

  diary of bottoms 32; the bottles of the first bed then come to bear on the seats 22a of the bottom 22: the walls 31 will therefore distribute the entire weight of the stack but their rigidity is sufficient

  to prevent them from crashing, which would compromise the balance.

  On the other hand, it will be noted that, when they are laid, the caps of the bottles of the upper bed are guided not by the footprints 23

  but by the only separating males 24 These are found in the name of

  three of them around each bottle but we could possibly

  provide six, doubling rows 24a by rows 24b.

  Of course, during the subsequent loading, the behavior

  higher plateaux is identical to that of the previous ones, their

  chilling bringing the bottoms of bottles from other beds into reach

  on line 23a, and the bottles again form

  gides solidarized horizontally by the dividers, the set of,

  the load held in place on the pallet-handling by a hous-

  is retractable that immobilizes all during transport.

Claims (8)

  1 Trays for palletised loads of fragile articles such as glass containers, consisting of a sheet provided with impressions receiving on the one hand the ring of the neck of the containers of a lower bed, on the other hand the base of the containers of an upper bed, characterized in that the profile of these cavities (3, 23) brings them into clamping contact between this ring and this base, this only along a double line (3 a-3 b, 23 a) corresponding to the external rim (6 a) of the rim, the heel (7) of the containers resting however on the periphery of   impression but imposing only a minimal elastic deformation.   2 trays according to claim 1, characterized in that each footprint draws down a cell whose shape corresponds   to that of the ring but with enlarged entry (9, 28).   3 trays according to claim 2, characterized in that   the imprint -form on the upper side a nipple surrounded by a   annular (2a, 22a) and whose top carries in redan a circular ring (10, 26) of internal diameter adapted to that of the ring (6) of the lower containers, with a central clearance that leaves no subsist that a peripheral ring of width less than that of drinking them.   4 trays according to claim 3, characterized in that the central clearance is formed by a knob (12) slightly protruding towards the upper face.   Trays according to claim 3, characterized in that the step has a rounded nose (11) of radius of curvature (r) at least   equal to that of the outer rim (6 a) of the rim.   6 trays according to claim 5, characterized in that the difference between said radius of curvature and that of the outer rim of the rim is of the order of twice the tolerance between the diameter   internal of the cell and the outer diameter of the ring.   7 trays according to claim 3, characterized in that the annular seat is flat and connects to the nipple by a clipping path (14) low height.   8 trays according to claim 3, characterized in that the nipple connects to the annular seat by a groove (30) profile substantially trapezoidal.   9 trays according to one of claims 3 to 8, characterized   in that the support ring is situated, with respect to the annular seat,   at a height (h) just below that (L) of the corresponding part. dante of the pellet.   Trays according to one of the preceding claims, characterized   characterized in that the fingerprints are separated by prismatic ticks (4, 24).