ES2259500B1 - OPEN RECTANGULAR BASED PACKING. - Google Patents

Abstract

Open rectangular-based packaging made from a rigid panel (plywood, wood fiber, etc.) printed or coated on one side with a sheet of paper preprinted or not and / or with a plastic film. The two short sides are usually taller than the long sides. The packaging according to the invention is intended for the conditioning, storage and transport of fruits and vegetables. It is a unique piece, cut into a rectangular panel, using the entire surface of the panel. It comprises nine parts: 1 bottom, 2 long sides and 2 short sides, respectively adjacent to the four sides of this bottom and 4 flaps adjacent to the ends of the two short sides. A triangular section groove, limited to the thickness of the panel without cutting the outer lining, allows the adjacent sides to be folded at 90 ° or more, the one relative to its opposite. During the conformation for its assembly, the flaps of identical height to the short sides, are prolonged in the horizontal of the latter, thus increasing the support surface and forming a bracket by assembly with the long sides.

Description

Open rectangular packing.

Object of the invention

The present invention relates to a packaging open rectangular base, made from a rigid panel (plywood, wood fiber, etc ...), printed or coated on a face with a sheet of paper, preprinted or not, and / or with a plastic film The two short sides are usually more Tall than long sides.

Field of the Invention

This invention has its application within the packaging manufacturing industry and particularly packaging for food products.

Background of the invention

This type of packaging is intended for the conditioning, storage and transport of fruits and vegetables to the points of sale. It is usually manufactured in wood, by assembly of slats of sawn wood or wood veneer, or wood fiber; These materials are appreciated for their rigidity and their behavior in humid medium. To obtain a package, the heads (short sides) [one or several slats fixed by stapling on two triangular slats] are manufactured on the one hand, on the other hand the sides (long), serrated or in the form of wood veneer or panel of wood fiber. Two short sides and two long sides are assembled by stapling to form a frame. A bottom is manufactured by assembling slats and slats or by cutting a fiber or plywood panel to the desired format. The bottom is fixed on the frame by "angular" stapling. This process is long, complex and expensive. The packages are delivered fully assembled, which generates high transport and storage costs.
to.

This type of packaging is also manufactured in corrugated or compact cardboard; In this case, the packaging consists of a "cut-out" and printed piece, which includes lines of fold. It is delivered unarmed and flat (transport and storage economic) to the user. The latter has a machine that It forms the part and the assembly by gluing. He disadvantage is the degradation of the mechanical characteristics in medium wet

More recently, packages made from wood fiber panels or any other rigid panel, such as plywood, coated on one side with a sheet of paper, or cardboard and / or plastic film have appeared. This type of packaging uses the known possibility of folding the panel as described above, after having performed a milling that generates a hinge between the bottom of the rectangular package and the four adjacent sides; these four sides, after folding at approximately 90 °, constitute a frame that is locked by a system of spikes and
notches

In addition to the difficulty of machining that entails said locking system, the packaging has a shape pyramidal that overloads the internal volume and bothers the filling automatic since the glue is less than the dimensions of the background. Finally, the material performance is mediocre with respect to conventional packaging since all four are disabled corners of the base piece and the long sides are cut, whose width initial is equal to the height of the short sides, to create a ventilation of the transported product, constituting this low cut a supplementary waste.

Description of the invention

The open rectangular packing that the The present invention proposes that this known faculty can be used folding rigid panels, of wood fiber or other material rigid, previously coated with a sheet of paper, cardboard and / or plastic film, after having made a groove triangular, substantially limited to panel thickness, uncut the thickness of the paper or cardboard lining and / or film of plastic. The originality lies in the use of this possibility of folding rigid panels, as a hinge that connect two adjacent panels, not only to connect a bottom and four sides, but also connecting to the four corners the ends of the sides overlapping each other, with savings substantial material.

The packaging consists of a panel rectangular of wood fiber or plywood, coated on a surface called exterior of the future packaging, either with a sheet of paper, printed or not and reinforced or not, with a film of transparent plastic, or printed and protected by a film of glued plastic. The panel is cut by any means appropriate to obtain:

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a central rectangle that constitutes the bottom of the packaging to be obtained,

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two trapezoids that constitute the long sides , respectively adjacent to either side of the bottom rectangle, whose length is substantially identical to that of the large bottom side, and whose height is equal to the height of the long sides in the packaging that is going to get,

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two rectangles that constitute the short sides , respectively adjacent to one and another small side of the bottom, of length substantially equal to these sides, and whose width is equal to the height of the package to be obtained,

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four parallelograms called flaps , adjacent to the ends of the short sides, one side being substantially equal to the height of the package to be obtained and the other side substantially equal to the width of the long side, thus utilizing the entire surface of the initial panel.

It should be noted that the height of the sides long is 30 to 70 mm lower than that of the short sides, of where the material saving is derived from other models whose long sides are trimmed into rectangles whose width is equal to the height of the sides preserves.

A groove is milled according to the four sides of the rectangle that delimit the background. The strawberry is section isosceles triangle whose angle at the vertex is substantially the complement of the desired angle between the panels after folding (approximately 90º). A groove of equal section is milled between the small sides and their extension, which we call flaps, parallel to the small sides of the bottom. The distance between these two milling is equal to the width of the bottom increased or reduced, on either side of the hinge between the bottom and the sides long, in the thickness of the panel, as desired to have flaps exterior or interior of the finished packaging. Four inserts located in the extension of the short sides of the bottom, practiced between the bottom rectangle and the outer perimeter from the panel, separate the long sides of the flaps and allow fold these flaps during shaping. The sides of the inserts are parallel or oblique, as desired to obtain a packaging whose four sides are perpendicular to the bottom, or whose Short sides are slightly oblique.

To carry out the machining and allow the packages are stacked on top of each other and locked laterally, it is done;

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on each short side a central over-elevation whose projection is equal to approximately two or three times the thickness of the panel, the length of the projection being ten times the thickness of the panel.

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in the bottoms a sufficient opening to receive the projection when the packages are stacked on each other.

To shape the packaging, it is enough to fold back the two flaps that extend each short side at 90º, fold the short sides so prepared to approximately 90º, and finally fold the long sides at 90º to obtain the desired packaging. The two pairs of flaps will be superimposed on the long sides, either internally or externally, as desired; the fixing of these flaps on the long sides will be done either by gluing, either by stapling or by any other appropriate means. The flaps, whose length measured in plane is equal to the height of the heads, prolongs the latter thus increasing the bearing surface for stacking, and constitute authentic angles that transmit the vertical load without buckling and that form billboards capable of resisting efforts and lateral shocks during handling and transport. The long sides can thus be lowered without damaging the solidity of the assembly, while carrying out maximum ventilation, a better presentation of the products and a substantial saving of panel, of the order of 15 to 25%. In the case where the flaps are folded inside the long sides, it is possible to fit head-to-head, in pairs, on the assembled packages, thus greatly reducing the overall volume during transport and storage in
empty.

Other characteristics and diverse advantages of the invention come apart in addition to the following description detailed. For illustrative purposes, forms of realization of the object of the invention and embodiments, to title of non-limiting examples, in the attached drawings.

Description of the drawings

To complement the description that is being performing, and in order to help a better understanding of the characteristics of the invention, is accompanied herein descriptive, as an integral part of it, a set of planes, in which by way of illustration and not limitation, it has been represented the following:

Figure 1 is a bottom view of the piece cropped and grooved, in the plane, which allows to position the flaps inside the long sides during shaping, and tilt the small sides towards the inside of the packaging,

Figure 2 is a bottom view of the piece cropped, in the plane, that allows to position the flaps in the outside the long sides during shaping, and get a perfectly parallelepipedic packaging,

Figure 3 is a perspective view of the shaped packaging, with flaps inside and a light trunkconicity between the short sides,

Figure 4 is a perspective view of the shaped packaging, with flaps on the outside and a shape perfectly parallelepipedic,

Figure 5 is an elevation view of the packaging which shows the stacking in the case (figure 1) in which the sides small determine a slight taper; precise the shape of the flaps,

Figure 6 is a view from the left of the same packing that shows that the long sides are perfectly perpendicular to the bottom.

Figure 7 shows the milling detail between the bottom and the long side and the detail of the cut between the long side the flap and the bottom,

Figure 8 shows the detail of the milling between the short side and the flap - inner version,

Figure 9 shows the milling detail between the short side and the flap - outer version,

Figure 10 is a perspective view that shows the preparation of the short sides, with the flaps folded and long folded sides before shaping,

Figure 11 is a perspective view that shows the shaped and stapled packaging,

Figure 12 is a perspective view that shows the shaped and glued packaging,

Figure 13 is a perspective view that shows the shaped and "riveted" packaging,

Figure 14 shows the detail of the riveted-glued.

Preferred Embodiment of the Invention

Referring to these drawings, the piece is trim on a panel (1) previously sawn on the outer sides of the piece and coated, on a face called exterior to packaging, with a print and with a plastic film or a preprinted sheet, reinforced, where appropriate, of a plastic film. This piece includes:

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A central part (2) -rectangular- bottom of the desired packaging,

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Two trapezoids (3) (5) each adjacent to a long side of the bottom and whose base is substantially equal to the length of this long side

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Two rectangles (4) (6) adjacent to the short sides of the bottom

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Two parallelograms (7) (8) and (9) (10), which respectively extend the short sides (4) and (6).

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Four conical inserts (11) (12) (13) (14) that separate the long sides (3) (5) of the respective flaps (7) (10) and (8) (9). The slope of the sides of these inserts is identical to the slope to which it is desired to give the short sides (4) (6) during shaping; it can be equal to zero if a perfect rectangle parallelepiped is desired (short sides at 90 ° to the bottom). The bottom of the inserts is defined by a semicircle whose diameter is slightly greater than twice the thickness of the panel.

The short sides (4) (6) are cut in their peripheral part to obtain, on the one hand, the desired height of this side with a central projection (15) (16) whose height with respect to the short sides is equal to two at three times the thickness of the panel, and on the other hand, oblique surfaces (17) (18) (19) (20) whose slope is identical to that of the inserts (11) (12) (13) (14), is say the desired slope for the sides
short

The bottom comprises two rectangular openings (21) (22) positioned such that the projections (15) (16) of the short sides (4) (6) center it in these openings during the packaging stacking. A groove is made in the periphery of the bottom rectangle (2), with a strawberry of triangular section, on the inside of the panel. The angle at the vertex is approximately 90º, between the bottom and the long sides (25) (26); is greater than 90º for (23) (24) between the bottom and the short side. Be perform four slots at 90º (27) (28) (29) (30) respectively between the short sides (4) (6) and the flaps (7) (8) (9) (10), shifting the alignment of these slots towards the center of the packing with respect to the grooves (25) (26) between the bottom and the long sides in the panel thickness value.

The conformation (figure 10) is performed in a automatic machine folding the flaps (7) (8) (9) (10) at 90º, and a then folding the short sides (4) (6) thus prepared for position them at 90º or more with respect to the bottom; simultaneously and with a slight delay, the long sides (3) (5) also fold to 90º. The short sides (4) (6) fold beyond 90º until the flaps (7) (8) (9) (10) rest against the bottom (the part upper (17) (18) (19) (20) of these flaps cut with the desired angle is perfectly horizontal and complete the lift plane at the same height as the sides short (4) (6)). The bottom of these flaps resting against The bottom guarantees the transmission of stacked cargo.

The assembly is done with known means already used by producers and / or packaging users (thus prolonging the amortization of these equipment conventional):

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by stapling in the plane (figure 11) between the end parts of the long sides (3) and (5) and the respective flaps (7) + (10) and (8) + (9). The assembly can be improved if a hand of glue is previously given on the faces in contact to overlap. The glue can be "cold", with the consequent saving, since the adhesion can be made over time under the pressure of the staples.

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by hot gluing (figure 12) hot-melt type, to obtain fast adhesion of the inner faces of the sides (3) and (5) and of the flaps (7) (8) (9) (10) in the areas where they overlap.

A new assembly mode can be used (Figure 13): one or more holes are drilled (31) (32) (33) (34) in the extreme areas of the long sides (3) and (5) and the holes (35) (36) (37) (38) corresponding on the flaps (7) (8) (9) (10) so that these holes coincide in opposition to each other in front of others at the time of conformation. The different holes they comprise chamfers (figure 14) on the outer faces of the assembly

To block the assembly, you can:

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O well introduce plastic rivets that are stuffed by heating.

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O well pour hot-melt hot glue on the holes, thus constituting the same number of rivets as of holes when cooled.

In both cases, cooling guarantees the assembly clamping. The section of the "rivets" it depends on the dimensions of the packaging and the loads to transport.

Claims (6)

1. Open rectangular-shaped packaging (2) (figure 3) and (4), mainly intended for the conditioning, transport and storage of fruits and vegetables, whose short sides (4) (6) are generally raised above the long sides ( 3) (5); obtained from a single rigid panel (1) (wood fiber, plywood, etc.) printed or coated on one of its faces with a sheet of paper, preprinted or not, and / or with a plastic film, character - zado :

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why The packaging consists of a single piece, cut into a rectangular panel (1) using the entire surface of this panel,

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why The packaging comprises nine parts:

to)

one central rectangle that constitutes the bottom (2)

b)

2 trapezoids (3) and (5) that make up the long sides, respectively adjacent to either side of the large sides of the bottom rectangle (2), whose length is substantially identical to large side of the bottom, and whose height is equal to the height of the long sides in the packaging to be obtained,

C)

2 rectangles (4) and (6) that constitute the short sides, respectively adjacent to one and the other of the small sides of the bottom, of length substantially equal to these sides, and whose width It is equal to the height of the packaging to be obtained,

d)

4 parallelograms called flaps (7) (8) and (9) (10), adjacent to the ends of the short sides (4) and (6), being one of the sides substantially equal to the height of the packaging to be obtained and the other side substantially equal to the width of the long side.

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why the different intersections between adjacent parts comprise a machined groove with a triangle cutter isosceles, whose angle at the vertex is substantially 90 °. These Slots are then placed:

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(23) (24) between the fund (2) and the two short sides (4) (6)

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(25) (26) between the fund (2) and the two long sides (3) (5)

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(27) (28) (29) (30) among the ends of the short sides (4) (6) and the respective flaps (7) (8) and (9) (10)

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why the depth of the triangular section grooves is limited substantially to the thickness of the panel, without cutting the thickness of the paper lining, cardboard and / or plastic film, which thus constitute hinges during the packaging conformation, to the assembly

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why four inserts (11) (12) (13) (14), located in the extension of the short sides of the bottom, made between the bottom rectangle and the perimeter

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outside of the panel, separate the sides lengths (3) and (5) of the flaps (7) (8) (9) (10) and will allow fold these flaps along the fold lines (27) (28) (29) (30) during assembly conformation.

2. Rectangular base open packaging according to claim 1 characterized :

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why the two edges of the inserts (11) (12) (13) (14) each have slope with respect to the small side of the bottom, whose angle a is equal to the slope that you want to give to the short sides (4) and (6), with respect to the vertical, during shaping (figure 11) (figure 12) (figure 13):

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the edge of the insert that respectively delimits the flaps (7) (8) (9) (10) you can thus fully support the fund during the conformation and transmit the load to the stack

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the edge of the insert that respectively delimit the long sides (3) and (5) define the shape trapezoidal of the latter and performs the perfect parallelism of its ends with short sides (4) and (6) inclined with the angle a during the conformation.

3. Rectangular base open packaging according to claims 1 and 2 characterized :

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why the short sides (4) and (5) each comprise, on the opposite side at the bottom, and parallel to it, a central projection (15) (16), trapezoidal, whose height is approximately equal to three times the panel thickness or more, and width from ten to fifteen times.

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why the bottom (2) comprises two openings (21) (22) positioned such so that the projections (15) (16) center it in these openings during the stacking of the packaging,

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why the edges parallel to the small side of the bottom, from the ledge until the fold lines (27) (28) (29) (30) are extended by oblique (17) (18) (19) (20) outward from the small side according to an angle a and thus defining the flaps (7) (8) (9) (10) in the form of a parallelogram; the latter, during the packaging conformation, will extend the part horizontally upper short sides (4) (6), thus increasing the surface of support of the funds in the stacking and constituting angular rigid that transmit the load without buckling and that form a cartouche with long sides (3) and (5), with which assemble

4. Open package of rectangular base according to claims 1 - 2 and 3 characterized :

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why the grooves (27) (28) (29) (30) between the short sides (4) and (6) and the corresponding flaps (7) (8) (9) (10) are machined in parallel to the large sides of the bottom rectangle (2) and it they move towards the center with respect to the grooves (25) and (26) in the panel thickness value to allow flaps, then of folding, fit perfectly against the ends of the long sides (3) and (5) during shaping, for assembly

5. Open package of rectangular base according to claims 1 - 2 and 3 characterized :

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why the grooves (27) (28) (29) (30) between the short sides (4) and (6) and the corresponding flaps (7) (8) and (9) (10) are machined in parallel to the large sides of the bottom rectangle and move outward with respect to the slots (25) and (26) in the value of panel thickness, to allow flaps, after folded, fit perfectly on the outside and against the long side ends (3) and (5) during shaping (figure 4) for assembly.

6. Open package of rectangular base according to claims 1 - 2 - 3 and 4 characterized :

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why it can be transported by plane, from the factory where it is manufactured (forest region) to the place of use (region of fruit and vegetable crops)

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why it can be formed simply by known means that already used by producers and / or users of wooden packaging Traditional or corrugated cardboard:

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wire stapler with multiple next heads (figure 11)

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shaping machine corrugated cardboard packaging and hot glue assembly [hot-melt] (figure 12)

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why it can be shaped, thanks to holes drilled for this purpose, according to a new assembly mode that locks:

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or by introducing rivets of plastic to be stuffed by heating

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or pouring hot glue from hot-melt type, thus constituting the same number of rivets that of holes when cooling, guaranteeing the cooling, in either case, the clamping of the assembly