WO2019161516A1

WO2019161516A1 - 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

Info

Publication number: WO2019161516A1
Application number: PCT/CL2019/050013
Authority: WO
Inventors: Nicolás PIZARRO DEL RÍO; Cristian SAAVEDRA FLORES
Original assignee: Empresas Cmpc S.A.
Priority date: 2018-02-21
Filing date: 2019-02-20
Publication date: 2019-08-29
Also published as: ES1260635Y; ES1260635U; EP3757027A1; JP3232373U; US20210002020A1; DE212019000194U1; BR212020017181U2; EP3757027A4; CN214139311U

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

CORRUGATED CARTON BOX FOR THE TRANSPORT OF FRESH PRODUCTS, THE ONE THAT HAS IMPROVED ISOLATION AND SEALING PROPERTIES AND THAT FACILITATES THE ADHESIVE BAND DISPOSAL IN THE FINAL SEALING PROCESS OF THE BOX

FIELD OF THE INVENTION

This invention is developed in the field of containers for the transport of refrigerated products, in particular 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 adhesive bands in the final sealing process of the box.

DESCRIPTION OF PRIOR ART

In the field of transport of fresh food products, such as the transport of fresh frozen fish, several solutions have been developed that aim to conserve the internal temperature and avoid runoff of liquids; Perhaps the most recurrent is related to high density expanded polystyrene containers, generally made up of a container with a lid that closes under pressure; This solution is good in terms of insulation of the outside temperature, weight and tightness, since they do not allow internal liquids to drain when forming molded containers that are of a single piece that lack folds or joints where liquids can be filtered. However, this indicated solution presents environmental problems, mainly because the manufacture of expanded polystyrene means a polluting process and because it is not an easily degradable material; fact that has been tried to overcome with the design of new containers made of materials that although they have lower insulating properties and are of less resistance, such as cardboard, these have proposed structures that seek to obtain equal and better benefits.

It is common to find cardboard containers to contain food that can be drained, those that normally have a structure of folded corners in bellows, preventing the passage of liquids to the outside; however, these solutions are not mostly designed to contain frozen food, such as fish, so that although they may have good sealing conditions, they lack both good insulation and structural resistance conditions, being formed by only one material layer

Another problem that has not been solved in the cardboard boxes, is that once the containers have been filled and closed, they always carry adhesive bands in the form of a seal covering the joint junction of the container and the lid; These bands must cover the entire perimeter of the union without suffering cuts or additives, 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 their final destination. To do this, the container that has already been closed must be moved, rotated and sometimes lifted to access the meeting edge between the lid and the container where the band is to be arranged, which It is usually placed on the bottom edge of the container, making it difficult to install said adhesive strip.

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 sealed container with folded corners in bellows and a folding panel covering the bellows , plus a telescopic cover. It differs because it consists of a container, a single telescopic lid and the folding panel has other formal characteristics, with more protrusions and cuts through which the inner liquid can drain; representing the disadvantage of being conformed only by 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 maintained in contact with the outside; so that the probability of not maintaining the low indoor temperature for food preservation increases and liquid runoff also occurs. On the other hand, when joining the two pieces by stuffing the container inside the lid, it is appreciated that the joint between both pieces is located at the bottom 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 gain access to the lower edge, an act that is complex and inconvenient since the box must be turned or tilted.

Another document that should be considered is US 4,391, 405 (A) that discloses a box that, like the proposed utility model, features folded bellows corners with a protrusion that fits into a groove and has a panel knocked down that covers the bellows. It differs because it does not include telescopic covers, but the only cover it has is folded down 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 is not telescopic, conforming as a second wall, but only covers the upper edge, so it clearly cannot adequately solve the problem of insulation and sealing, although it does facilitate the installation of a perimeter seal band, since the joint between body and cover is not located at the bottom edge; Despite the above, the conditions of isolation 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 folded corners in bellows with a projection that fits in a groove and has a abatiole panel that retains to the bellows. It differs because it does not include telescopic covers and the panel is small in width, so they do 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 isolation.

Another document to consider is the GB2392150 that discloses a box that, like the proposed utility model, features folded corners in bellows with a protrusion that fits into a groove and has a folding panel that retains the bellows. It differs because it does not include telescopic covers and the abatióle panel has projections on its edge that fit into grooves in the base, so that it lacks tightness conditions, since having grooves in the base the liquids would drain and without having a lid, it could not keep a desirable low internal temperature to transport frozen fresh food.

Finally, as a close document of the state of the art, US 4,915,291 can be indicated, which discloses a box that, like the proposed utility model, has an inner container and two telescopic covers. However, the inner container is of the tubular type, without base or top wall, so that it could not serve as a tight container for carrying fresh food such as frozen fish, since the only base wall is given by the underside of the lower lid and if it is moistened by the contents, even if it has double walls in the perimeter, said base wall would break and the entire container would be deflated.

As it is possible to see, none of the solutions of the prior art can offer high conditions of both isolation and sealing, since as it was seen, none of them considers a sealed inner container completely surrounded by a second container formed by the lids; and specifically, none of the solutions contemplate a double or triple wall of material, both at the base of the box and at the perimeter walls, considering that the base wall of the container is where the contained food rests and therefore is the wall with greater solicitation during transport; so that none of the solutions of the prior art 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 internal liquids and which 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. For the aforementioned, the present utility model comes to overcome 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.

SUMMARY OF THE UTILITY MODEL

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 defrosting of 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 runoff of liquids to the outside of the container or the absorption of the liquids by the walls and deteriorate.

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

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

To achieve the objectives set, the present utility model provides a box consisting of three pieces, but which is obtained only from two types of folding templates. Where the box, once armed, has double and triple walls, plus reinforced edges that improve the insulation and resistance conditions of the container; It has folded anti-slip edges and the height ratio between the outer parts facilitates the placement of a perimeter seal band.

The three pieces consist of a sealed inner 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 that are embedded telescopically around the sealed container, one on each side upper and lower, so that when closed they meet in a central line, halfway up the box and allow sealing with adhesive tape by making a horizontal turn to the box, without having to lift or tilt to access the line together, as would happen if that line of union were on 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 provide a final seal.

The sealed inner container is made of a special cardboard, which includes a paper with a polyethylene surface application, 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 draining towards outside.

In the same way, said sealed container contemplates a way of arming that is only with folds, without cuts through which the liquid can drain outwards, achieving high sealing properties; thus, the vertical edges of the container are formed by a folding in bellows, where said fold is subsequently attached to the smaller face of the container and secured by a flip-up panel that is above said folds, said edges having folded in bellows some upper projections that they fit into a central groove that appears on 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 larger than When assembling the covers, it is placed along the base wall, thereby generating that the longitudinal edges of the lid are also covered, preventing easy draining of liquids in case of sudden movements of the box during transport and providing a second partial layer of the base face of the covers.

Once the box is fully assembled, as a result 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 perch or fold against said minor wall; then, when the lids are placed around the inner container, said lids have larger and smaller walls that are of two sections folded on themselves, forming two additional layers in 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 has to be 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 bottom lid that it is covering the lower part of the sealed inner container; To this must be added that the lower lid has the distal portion in its larger walls that when folded is 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, those that remain parallel and perched along the base face, partially covering with a second layer said upper cover.

With this, it is possible to see that the box that is the reason for 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 it is still a box of cardboard, is able to contain fresh frozen food for transport maintaining high temperature insulation conditions between inside and outside thanks to the structure of several layers of material.

The present model is also advantageous because it is able to avoid the runoff of the internal liquids thanks to a structure of folded corners in bellows that only have folded and no cut or draft where it can drain, which are also secured in position thanks to a panel that covers the top edge of these folded bellows 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 waterproof container.

Another utilitarian benefit of the present model is that it facilitates the installation of bands or tapes that seal the joints where the two covers that cover the inner container are joined, since said joint line is arranged halfway up the container, so that at Placing the seal tape is only enough to rotate the box on the same axis, keeping it horizontal, without having to lift the box or tilt it to access 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 deployed 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 are appreciated. Figure 2 shows the template used to assemble the sealed inner container.

Figure 3 shows the template used to assemble the covers.

Figure 4A shows the template for assembling the sealed inner container without folding.

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

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

Figure 4D shows a third final step in the folding sequence of the template for assembling the sealed inner container, where the edges are folded inwards and covered by the folding panel also folded inwards.

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

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

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

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

Figure 6 shows an option where the watertight container has the edges folded in bellows outward, as well as 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 lid (2), a lower lid (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 sealed intermediate container (3) is obtained from a template design (5) different from that of the upper cover (2) and the lower cover (4).

The sealed intermediate container (3) is covered with a special cardboard, which includes a paper with 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 sealed inner container (3) is located inside the upper lid (2) and the lower lid (4) and has folded edges (6) in the form of bellows retained by a hinged panel (9), said container being able to be assembled (3) only with folds and without 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 sealed intermediate container (3), achieving optimum thermal insulation.

The upper (2) and lower (4) covers, when installed outside the container (3), are joined at half the height of the container (3), which facilitates the installation of a seal tape.

As can be seen in Figure 2, the template (5) of the intermediate sealed container (3) consists of a base (8) from which 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 an abatiole panel and a proximal section (25). The template (5) has vertical, horizontal and oblique folding lines that allow the assembly of said inner sealed container (3).

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

In the assembly of the sealed inner container (3) from the template (5), the edges (6) are folded in bellows using the folding lines (27) being able to keep the edges (6) interchangeably inside or outside the body of the sealed 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 abatiole panel and the proximal section (25) is positioned above the upper edge of the folded edges (6) in bellows, securing them in position. In the event that the folded edges (6) are on the outside, the abatiole 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 abatiole 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 composed of a base (12) from which two major walls (13), two minor walls (14) and four are projected. fins (15), the major walls (13) are composed of three folding sections, a distal section (18), a central section (19) and a proximal section (20). The minor walls (14) are composed of a distal section (21) and a proximal section (22), where the distal section (21) has a central shoulder (16) at its edge.

When assembling the upper (2) and lower (4) caps from the template (17), the distal sections (18) of the major walls (13) are perched 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 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 shoulder (16) of the same minor walls (14) of the covers (2) and (4).

The template (17) to form the covers (2) and (4) has vertical and horizontal folding lines that allow the assembly of said covers. The template (17) considers cuts (26) between the fins (15) and the proximal section (20) that allow folding the larger walls (13) in their sections (18, 19, 20) the fins (15) remain arranged between the central sections (19) and the proximal sections (20). (See figures 5D and 5E).

Claims

1. A corrugated cardboard box (1) for the transport of fresh products, such as frozen fish, which has improved insulation and sealing properties and facilitates the provision of adhesive bands in the final sealing process of the box, CHARACTERIZED because it consists of:

- an upper cover (2) and a lower cover (4) which are telescopic type, form a second wall around a sealed intermediate container (3) and each one covers half the height of the container (3), in which the upper (2) and lower (4) caps are obtained from the same type of template

(17), in which the template (17) is composed of a base (12) from which two major walls (13), two minor walls (14) and four fins (15) are projected, in which the major walls (13 ) are composed of three foldable sections, a distal section (18), a central section (19) and a proximal section (20) and the minor walls (14) are made up of a distal section (21) that has a central projection (16) at the edge and a proximal section (22).

- a sealed 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 bellows retained by a hinged panel (9) that is folds over them, in which the intermediate sealed container (3) is obtained from a template (5) different from the template of the lids (17), in which the template (5) of the intermediate sealed container (3) is composed of a base (8) from where two major walls (23), two minor walls (24) and four folding edges (6) are projected, in which the major walls (23) are composed of a single section and the minor walls (24) are composed of a section proximal (25) and a distal section that corresponds to the abatiole panel (9).

2. A corrugated cardboard box (1) for the transport of fresh products, according to claim 1, CHARACTERIZED because the proximal section (25) of the minor walls (24) of the container (3) and the section that is the Abatiole panel (9) are joined together by folding portions (10) between which there is a central groove (11).

3. A corrugated cardboard box (1) for the transport of fresh products, according to claim 1, CHARACTERIZED in that the template (17) for forming 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 (13) are bent in their sections (18, 19, 20), the fins (15) are arranged between the central sections (19) and the proximal sections (20). 4. A box (1) of corrugated cardboard for the transport of fresh products, according to claim 1, CHARACTERIZED because in the upper cover (2) and the lower cover (4) the distal sections (18) of the major walls (13) are perched 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 because the distance between the two distal sections (18) that are perched along and parallel to the base (12) of the lids (2) and (4), it is coincident with the width of the central groove (11) of the container (3) and with the width of the shoulder (16) of the same minor walls (14) of the lids (2) ) and (4).

A corrugated cardboard box (1) for the transport of fresh products, according to claim 1, CHARACTERIZED because the sealed inner container (3) is covered with a special cardboard that includes a paper with polyethylene surface application.

7. A corrugated cardboard box (1) for the transport of fresh products, according to claim 1, CHARACTERIZED because from the template (5), in the sealed inner container (3), the folded edges in the form of Bellows (6) are either outside or inside the proximal section (20) of the smaller walls (24).

8. A box (1) of corrugated cardboard for the transport of fresh products, according to claim 1, CHARACTERIZED because the edges (6) have a projection (7).

9. A corrugated cardboard box (1) for the transport of fresh products, according to claim 6 to 8, CHARACTERIZED because when the bellows folded edges (6) are either outside or inside the walls minors (24), their projections (7) fit into the central groove

(11) and the folding panel (9) is covering said folding edges (9) ensuring its position.