ES1260635U - Corrugated cardboard box for the transport of fresh produce, which has improved insulation and leak-tightness properties and facilitates placing adhesive strips during the final sealing of the box - Google Patents

Abstract

This invention relates to a corrugated cardboard box (1) for the transport of fresh produce, such as frozen fish, which has improved insulation and leak-tightness properties and facilitates placing adhesive strips during the final sealing of the box, said box comprising a top cover (2), a bottom cover (4) and an intermediate leak-tight container (3) that is positioned inside the top cover (2) and the bottom cover (4) and has vertical folded edges (6).

Description

DESCRIPTION

CORRUGATED CARDBOARD BOX FOR TRANSPORTATION OF FRESH PRODUCTS

FIELD OF THE INVENTION

This utility model is developed in the field of packaging for the transport of refrigerated products, especially it is disclosed to a corrugated cardboard box for the transport of fresh fish that has improved insulation and sealing properties and that facilitates the arrangement of bands adhesives in the final sealing process of the box.

DESCRIPTION OF PRIOR ART

In the field of transporting fresh food products, such as transporting fresh frozen fish, several solutions have been developed that aim to preserve the internal temperature and avoid liquid runoff; Perhaps the most recurrent is related to high-density expanded polystyrene containers, generally made up of a container with a lid that closes by pressure; This solution is good in terms of insulation from the outside temperature, weight and tightness, since they do not allow internal liquids to drain when forming molded containers that are one-piece that do not have folds or joints through which liquids can leak.

However, this solution mentioned presents environmental problems, mainly because the manufacture of expanded polystyrene means a polluting process and because it is not an easily degradable material; A fact that has been tried to overcome with the design of new containers made with materials that, although they have less insulating properties and are less resistant, such as cardboard, they have proposed structures that seek to obtain equal and better benefits.

It is common to find cardboard containers to contain food that can drain, those that normally have a structure of folded corners in a bellows, preventing the passage of liquids to the outside; However, most of these solutions are not designed to contain frozen food, such as fish, so although they may have good sealing conditions, they lack both good insulation conditions and structural resistance, as they are made up of a single layer of material.

Another problem that has not been solved in cardboard boxes is that once the containers have been filled and closed, they always have adhesive bands in the form of a seal covering the junction of the container and the lid; These bands must go around the entire perimeter of the joint without suffering cuts or additions, as they are also a seal that indicates inviolability, so it should not be appreciated how it was cut and rejoined, ensuring the packaging conditions until its final destination. To do this, the container that has already been closed must be moved, turned and sometimes lifted to be able to access the meeting edge between the lid and the container where the band is to be arranged, which is normally located on the lower edge. container, making the installation process of said adhesive strip difficult.

For example, in the state of the art there are documents such as US 5,050,794 (A), this patent discloses a box that, like the proposed utility model, comprises a watertight container with bellows folded corners and a folding panel covering the bellows , plus a telescopic lid. It differs because it is made up of a container, a single telescopic lid and the folding panel has other formal characteristics, with more projections and cutouts through which the interior liquid can drain; representing the disadvantage of being made up of only two telescopic pieces, which although they become two walls parallel to each other on the perimeter faces, the lower and upper face of the container is seen, a single insulating wall is kept in contact with the outside; so that it increases the probability that it will not maintain the low interior temperature for food preservation and that liquid runoff will also occur. On the other hand, when joining the two pieces by stuffing the container inside the lid, it can be seen that the joint between the two pieces is located at the lower edge of the container, where it meets the edge of the lid; Thus, in order to install a perimeter seal band, the box must be lifted to access the lower edge, an act that is complex and inconvenient since the box must be turned or tilted.

Another document that must be considered is US 4,391,405 (A) that discloses a box that, like the proposed utility model, has gusseted folded corners with a projection that fits into a slot and has a hinged panel that covers the gusset. It differs because it does not include telescopic covers, but the only cover it has is hingedly attached to the body. In this case, like the previous document, it has the disadvantage that the walls lack good insulating capacity, since they are single-layer and the cover It is not telescopic, conforming to a second wall, but covers only the upper edge, so it clearly cannot adequately solve the problem of insulation and tightness, although it does facilitate the installation of a perimeter seal strip, since the joint of junction between body and cover is not located at the lower edge; Despite the above, the isolation conditions would be quite poor, so it does not adequately solve all the problems of art.

Another document that is part of the state of the art is EP0392227 (A1) that discloses a box that, like the proposed utility model, has gusseted folded corners with a projection that fits into a slot and has a hinged panel that retains to the bellows. It differs because it does not include telescopic lids and the folding panel is not very wide, so it does not ensure the position of the folded walls, so that this box could not be used to transport fresh food, such as frozen fish, since it does not include a lid and the walls are not double to cause temperature insulation.

Another document to consider is GB2392150, which discloses a box that, like the proposed utility model, has bellows folded corners with a projection that fits into a slot and has a hinged panel that retains the bellows. It differs because it does not include telescopic lids and the folding panel has projections on its edge that fit into grooves in the base, so that it lacks sealing conditions, as having grooves in the base the liquids would drain and as it does not have a lid, could not maintain a desirable low interior temperature for transporting fresh frozen food.

Finally, as a close document of the state of the art, US 4,915,291 can be pointed out, which discloses a box that, like the proposed utility model, has an inner container and two telescopic lids. However, the inner container is of the tubular type, without a base or upper wall, so that it could not serve as a watertight container to carry fresh food such as frozen fish, since the only base wall is given by the lower face of the The lower lid and if it gets wet from the content, even if it has double walls around the perimeter, said base wall would break and the entire container would collapse.

As it is possible to see, none of the solutions of the prior art can offer high conditions of both insulation and tightness, because as seen, none of them considers a watertight inner container completely surrounded by a second container made up of the covers; and specifically, none of the solutions contemplates a double or triple wall of material, both at the base of the box and on the perimeter walls, considering that the base wall of the container is where the contained food rests and therefore is the wall with the greatest load during transport; so that none of the prior art solutions is capable of providing a corrugated cardboard container with high insulating properties given by more than one layer or wall of material, which at the same time offers a structure that remains stable despite the internal liquids. and that also allows or facilitates the installation of a perimeter seal band by providing a joint that is arranged on the perimeter faces at a height far from the base.

Due to the aforementioned, this utility model overcomes the problems of the prior art by proposing a cardboard box that not only has high insulating and sealing properties compared to what exists, but also facilitates the installation of perimeter seal bands. , being able to install it by making a horizontal turn of the box without having to lift or tilt it.

EXPLANATION OF THE INVENTION

This utility model refers to a corrugated cardboard box for the transport of fresh food, such as frozen fish, whose main objective is to replace expanded polystyrene boxes (trade name of Aislapol or Plumavit).

Another objective of the utility model is to provide a box for transporting fresh food, such as frozen fish, which has improved conditions of resistance to heat transfer, maintaining the temperature inside the container and avoiding thawing of the food.

Still another objective of the present model is to provide a box for transporting fresh food, such as frozen fish, which has improved sealing conditions, preventing the liquid from running off to the outside of the container or the absorption of the liquids. liquids from the walls and deteriorate.

Another objective of the utility model is to provide a box for transporting fresh food, such as frozen fish, that has a simple configuration with only two different types of pieces, each one formed from a template that can be stored stacked without occupying more space and assemble them only at the time of packaging the product.

Still another objective of the utility model is to provide a box for transporting fresh food, such as frozen fish, that facilitates the installation of an adhesive seal perimeter band, of the type that seals the joint between the lid and the container body.

To achieve the objectives set, this utility model provides a box made up of three pieces, but which is obtained only from two types of folding templates. Where the box, once assembled, has double and triple walls, plus reinforced edges that improve the insulating and resistance conditions of the container; it has anti-drip folded edges and the height ratio between the outer pieces facilitates the placement of a perimeter seal strip.

The three pieces consist of an inner watertight container, a lower lid and an upper lid, where the lower lid and the upper lid correspond to the same element that is repeated and which are telescopically embedded around the watertight container, one on each side upper and lower, in such a way that when closed they meet in a central line, halfway up the height of the box and allow sealing with adhesive tape by making a horizontal turn to the box, without having to lift or tilt it to access the line joint, as it would happen if that joint line were at the bottom edge of the box; Thus, once the two lids are embedded outside the inner container, it is enough to rotate the box around a single axis and keep the seal tape in a horizontal position so that it adheres to the joint and provides a seal final.

The watertight inner container is made of a special cardboard, which includes a paper with a surface application of polyethylene, which prevents the liquid content of the product (ice and blood) from passing through and soaking the walls of the box with its consequent weakening and dripping towards outside.

In the same way, said watertight container contemplates a way of assembling that is only with folds, without cuts through which the liquid can drain to the outside, achieving high sealing properties; thus, the vertical edges of the container are made up of a bellows fold, where said fold is subsequently attached to the smaller face of the container and secured by a folding panel that remains above said folds, said edges folded in bellows having upper projections that they fit into a central groove that appears in the folded edge of connection between said folding panel and the smaller face of the container, thus ensuring its folded position and below said panel.

The upper cover and the lower cover, which are equal to each other, are made up of walls that in turn are formed of several sections folded together, obtaining perimeter walls that are two layers, plus a distal section of the walls greater than the When assembling the lids, it is placed along the base wall, thereby generating that the longitudinal edges of the lid are also covered, preventing an easy leakage of liquids in cases of sudden movements of the box during transport and providing a second partial layer of the base face of the caps.

Once the box is completely assembled, as an effect, a box is obtained that has reinforced walls of at least three layers on the perimeter faces, since the watertight container has larger perimeter walls formed by a single section and on the smaller walls it has a section plus the folded portions of the edges that rest or fold against said smaller wall; then, when the lids are placed around the inner container, said lids have larger and smaller walls that are two sections folded over themselves, forming two additional layers on the perimeter walls, so that the box in total has perimeter walls of three layers parallel to each other, increasing the required insulation conditions.

In the case of the bottom or base face of the box, it must be made up of at least two layers, since one layer is provided by the base wall of the same inner container and the second layer is provided by the base wall of the lower lid that It remains covering the lower part of the watertight inner container; To this must be added that the lower lid has the distal portion on its larger walls which, when folded, remains perched on the base face of the lid, generating a reinforcement of the longitudinal edges of the base of the box, at which point they would be reached three layers of walls.

In the case of the upper face of the box, it is given that a wall is given by the base wall of the upper lid, plus the two distal sections of the larger faces of said lid, which are parallel and positioned along the base face, partially covering said upper cover with a second layer.

With this, it is possible to see that the box that is the subject of the present application, offers conditions superior to what is found in the state of the art, so that it represents a utilitarian benefit with respect to what exists when solving the problem in a way more efficient, since even in a cardboard box, it is capable of containing fresh food frozen for transport maintaining high temperature insulation conditions between the interior and exterior thanks to the structure of several layers of material.

The present model is also advantageous because it is capable of preventing internal liquids from draining thanks to a structure of bellows folded corners that only have folds and no cutout or cut-out through which it can drain, which are also secured in position thanks to a folding panel that covers the upper edge of these gusseted folds and because the inner container is made of a material that has a plastic surface that prevents liquids from soaking the walls and weakening them, forming a completely watertight container.

Another utility benefit of the present model is that it facilitates the installation of bands or tapes that seal the joints where the two lids that cover the inner container join, since said joint line is arranged halfway up the container, so that when Placing the seal tape is enough to turn the box on the same axis, keeping it horizontal, without having to lift the box or tilt it to gain access to the bottom.

Additionally, it is possible to notice another advantage of the model, which is the conformation of three pieces from only two unique templates, which can be stored unfolded and assembled at the time of packaging, thus allowing considerable space savings.

DESCRIPTION OF THE FIGURES

A detailed description of the utility model will be carried out in conjunction with the figures that are part of this presentation, where it is seen that:

Figure 1 shows an exploded isometric view of the box, where the three parts that compose it can be seen.

Figure 2 shows the template used to assemble the inner watertight container.

Figure 3 shows the template used to assemble the covers.

Figure 4A shows the template to assemble the sealed inner container without bending.

Figure 4B shows a first step in the sequence of folding the bellows edges of the template to assemble the sealed inner container, which are folded into the container.

Figure 4C shows a second step in the sequence of bending the template to assemble the sealed inner container.

Figure 4D shows a third final step in the sequence of bending the template to assemble the watertight inner container, where the edges are folded inwards and covered by the hinged panel folded inwards as well.

Figure 5A shows the template for assembling the lids without bending.

Figure 5B shows a first step in the sequence of bending the template to assemble the seal.

Figure 5C shows a second step in the template bending sequence to assemble the seal.

Figure 5D shows a third step in the template bending sequence to assemble the seal.

Figure 5E shows a fourth step in the template bending sequence to assemble the watertight.

Figure 5F shows a fifth final step in the sequence of bending the template to assemble the watertight in which the finished lid is observed.

Figure 6 shows an option where the watertight container presents the edges folded in bellows outwards, like the option seen in figure 1.

DETAILED DESCRIPTION OF THE UTILITY MODEL

The utility model discloses a corrugated cardboard box (1) that is basically composed of three elements as shown in figure 1, an upper cover (2), a lower cover (4) and a sealed intermediate container (3). The upper cover (2) and the lower cover (4) are identical and are obtained from the same template design (17), the watertight intermediate container (3) is obtained from a template design (5) different from that of the upper cover (2) and the lower cover (4).

The intermediate watertight container (3) is covered with a special cardboard, which includes a paper with a surface application of polyethylene which prevents the liquid content of the product (ice and blood) from draining through the walls of the box (1), said watertight interior container (3) is located inside the upper cover (2) and the lower cover (4) and has folded edges (6) in the form of a bellows retained by a folding panel (9), being able to assemble said container (3) only with folds and no cuts where the liquid can drain.

The upper (2) and lower (4) covers are of the telescopic type and form a second wall around the watertight intermediate container (3), achieving optimum thermal insulation.

The upper (2) and lower (4) covers, when installed outside the container (3), meet halfway up the container (3), which facilitates the installation of a seal tape.

As can be seen in figure 2, the template (5) of the intermediate watertight container (3) is composed of a base (8) from where two major walls (23), two minor walls (24) and four folding edges ( 6), the major walls (23) are made up of a single section, the minor walls (24) are made up of a distal section (9) that forms a hinged panel and a proximal section (25). The template (5) has vertical, horizontal and oblique fold lines that allow the assembly of said watertight interior container (3).

The edges (6) have a projection (7); while the proximal section (25) of the smaller walls (24) of the container (3) and the section that is the hinged panel (9) are joined together by folding portions (10) between which there is a central groove ( eleven).

In the assembly of the inner watertight container (3) from the template (5), the edges (6) are folded into a bellows using the folding lines (27), the edges (6) being able to remain indistinctly inside or outside the body of the watertight intermediate container (3), in either case its projections (7) fit into the central grooves (11), where the folding portions (10) that are between the distal section (9) or folding panel and section proximal (25) are placed on the upper edge of the edges folded (6) in bellows, securing them in position. In the event that the folded edges (6) are outside, the folding panel (9) is also folded out of the container (3), covering said folded edges, as seen in Figures 1 and 6; In the opposite case, that the folded edges (6) are inwards, the folding panel (9) is also folded inwards, as seen in Figures 4C and 4D.

As can be seen in figure 3, the templates (17) of the covers (2) and (4) are made up of a base (12) from where two larger walls (13), two smaller walls (14) and four fins (15), the major walls (13) are composed of three collapsible sections, a distal section (18), a central section (19) and a proximal section (20). The smaller walls (14) are made up of a distal section (21) and a proximal section (22), where the distal section (21) has a central projection (16) on its edge.

When assembling the upper (2) and lower (4) covers from the template (17), the distal sections (18) of the larger walls (13) are positioned along and parallel to the base of the covers (12 ) and the projections (16) are located between said distal sections (18) of the major walls (13), (see figure 5F) and in turn, the width of these distal sections (18) is coincident with the width of the portions of folding (10) of the container (3).

Thus, the distance between the two distal sections (18) that are positioned along and parallel to the base (12) of the covers (2) and (4), is coincident with the width of the central groove (11) of the container (3) and with the width of the projection (16) of the same smaller walls (14) of the covers (2) and (4).

The template (17) to form the covers (2) and (4) has vertical and horizontal fold lines that allow the assembly of said covers.

The template (17) considers cuts (26) between the wings (15) and the proximal section (20) that allow that when the larger walls (13) are folded in their sections (18, 19, 20) the wings (15) remain arranged between the central sections (19) and the proximal sections (20). (See figures 5D and 5E).

Claims (9)

A corrugated cardboard box (1) for the transport of fresh products, such as frozen fish, which has improved insulation and sealing properties and which facilitates the arrangement of adhesive strips in the final sealing process of the box, CHARACTERIZED because it is composed of: - an upper cover (2) and a lower cover (4) which are of the telescopic type, form a second wall around an intermediate watertight container (3) and each covers half the height of the container (3), in which the upper (2) and lower (4) covers are obtained from the same type of template (17), in which the template (17) is made up of a base (12) from where two larger walls (13) project , two smaller walls (14) and four fins (15), in which the larger walls (13) are composed of three foldable sections in a row, a distal section (18), a central section (19) and a proximal section (20) and the minor walls (14) are composed of a distal section (21) having a central shoulder (16) on the edge and a proximal section (22). - a watertight intermediate container (3) that is located inside the upper cover (2) and the lower cover (4) and has folded vertical edges (6) in the form of a bellows retained by a folding panel (9) that folds over them, in which the intermediate watertight container (3) is obtained at starting from a template (5) different from the template for the lids (17), in which the template (5) of the intermediate watertight container (3) is made up of a base (8) from where two larger walls (23) project , two minor walls (24) and four folding edges (6), in which the major walls (23) are made up of a single section and the minor walls (24) are made up of a proximal section (25) and a distal section that corresponds to the folding panel (9). A corrugated cardboard box (1) for the transport of fresh products, according to claim 1, CHARACTERIZED in that the proximal section (25) of the smaller walls (24) of the container (3) and the section that is the hinged panel (9) are joined together by folding portions (10) between which there is a central slot (11). A corrugated cardboard box (1) for the transport of fresh products, according to claim 1, CHARACTERIZED in that the template (17) to form the upper cover (2) and the lower cover (4) considers cuts (26) between the fins (15) and the proximal section (20) of the major walls (13), so that when the major walls bend (13) in their sections (18, 19, 20), the fins (15) are arranged between the central sections (19) and the proximal sections (20). 4. A corrugated cardboard box (1) for the transport of fresh products, according to claim 1, CHARACTERIZED in that in the upper cover (2) and the lower cover (4) the distal sections (18) of the larger walls (13) are positioned along and parallel to the base (12), where the width of these distal sections (18) is coincident with the width of the folding portions (10) of the sealed inner container (3). 5. A corrugated cardboard box (1) for the transport of fresh products, according to claim 1, CHARACTERIZED in that the distance between the two distal sections (18) that are positioned along and parallel to the base (12) of the covers (2) and (4), is coincident with the width of the central slot (11) of the container (3) and with the width of the projection (16) of the same smaller walls (14) of the covers (2 ) and (4). 6. A corrugated cardboard box (1) for the transport of fresh products, according to claim 1, CHARACTERIZED in that the watertight inner container (3) is covered with a special cardboard that includes a paper with a surface application of polyethylene. 7. A corrugated cardboard box (1) for the transport of fresh products, according to claim 1, CHARACTERIZED in that from the template (5), in the inner watertight container (3), the edges folded in the form of bellows (6) are either outside or inside the proximal section (20) of the smaller walls (24). 8. A corrugated cardboard box (1) for the transport of fresh products, according to claim 1, CHARACTERIZED in that the edges (6) have a projection (7). 9. A corrugated cardboard box (1) for the transport of fresh products, according to claims 6 to 8, CHARACTERIZED because when the edges folded in the shape of a bellows (6) are either outside or inside the walls smaller (24), its projections (7) fit into the central slot (11) and the folding panel (9) remains covering said folding edges (6) ensuring its position.