JP3218024U - Packing box and removable lid structure integrated - Google Patents

Abstract

A liquid-tight and leak-proof packaging box that can be transported and stacked and a removable lid structure integrated therewith.
A packing box is formed of a bottom surface, a long side bending surface of the box, and a short side vertical surface 3, and the vertical surface 3 is in a vertical posture from a fold between the vertical surface 3 and the bottom surface. And is bent from a fold between the vertical surface 3 and the loading surface 4 of the short side to a horizontal plane. A molded tongue 15 is formed at the outer end of the loading surface 4 and the corners 27 of the lid structure 25 are guided so as to slide under the molded tongue.
[Selection] Figure 2

Description

  The subject of the present invention is a packaging box defined in the preamble of claim 1 and a removable lid structure integrated therewith.

  In the field of packaging, many different packaging containers have been developed that have been developed for various demands. The structure of the packaging container is mainly determined by the intended use. However, the packaging container design also needs to consider other aspects related to the manufacture and use of the packaging container. In most cases, particularly when moving and stacking the packaged containers together, the problem is that the containers must be liquid-tight and handled so that they do not leak.

  For example, in the food industry for packing meat and fish, liquid-tight and leak-proof packaging containers that can be transported and stacked are required. In addition, meat and fish packaging containers must be made from sanitary materials, ie, materials that are approved for contact with fatty foods. In addition, meat and fish boxes must be extremely rugged because a single package can weigh up to 20kg and is usually stacked at a height of 10 boxes. For this reason, the structural rigidity of the packaging containers and their loading strength are also important issues.

  According to what is known in the art, a leak-proof packaging container that is made by press-molding foamed polystyrene or plastic and that can be filled from above and that can be stacked is a good choice for storing and transporting meat. It is used. However, such a box requires a large storage space before use, which is unnecessary. There is also a problem with disposal after use. Furthermore, since the materials used for manufacturing are not reusable, from the viewpoint of environmental conservation, the use of the packaging container as described above does not give consideration to the environment.

  Further, a corrugated liquid-tight packaging container is also known in the technical field, and such a solution is disclosed in Patent Document 1. This publication uses a solution provided with an angular bellows, which is itself known in the art. The disadvantage of this structure is the integral lid flap, which becomes a problem when filling the box from above. This flap becomes a problem in the filling stage, whether manually or mechanically filling the production line. There is no room for upright flaps on many factory conveyor lines. Folding the flaps elsewhere is cumbersome and may require expensive techniques to be added to the current procedure. When assembling the box manually, the double fold over the entire length of the loading surface is hard to fold by hand and it is difficult to add a simple lid to the structure.

  A corrugated box having liquid-tight corners and provided with bellows has another problem that the end of the box bulges outward when the box is heavy. For this reason, if another box is stacked on top, it will try to push in the lower box. This is a major hindrance when handling the box, especially when handling the box lid at the bottom of the box.

In some solutions with liquid tight corners, cardboard pieces lock the long side between the folds at the end, but this solution does not provide a sufficiently tight lock for the long side, so The load resistance is reduced by the structure.

  Leak-proof solutions by being made from corrugated cardboard that can be filled from above and maintain its shape are also used for stacking and handling foodstuffs containing liquid contents, The loading surface is mechanically bonded. This is a major drawback because it requires another expensive packaging machine. In the production of a packaging container, the cost effectiveness of the packaging container is an important factor, and from a structural point of view, it is extremely important to functionally connect and fasten the components of the packaging container.

Finnish utility model No. 10658

  The object of the present invention is to realize a solution by means of avoiding the disadvantages of the prior art. According to the solution according to the invention, a completely new lid solution can be realized. This lid solution is particularly well suited for completely liquid-tight and leak-proof packaging boxes. Therefore, the packaging container according to the present invention is easy to handle even when the packaging is heavy. Moreover, this packaging container retains its shape even when many layers are stacked one after another.

  The present invention relates to a corrugated cardboard packaging container and its blank, which is mechanically or manually formed without using an adhesive, is tight against liquid and leakage from the inside, and humidity and liquid from the outside. It is also dense. The packaging container is stackable and has a short stacking shoulder instead of a lid flap that hinders packing.

  More precisely, the invention is characterized by what is presented in the claims. Hereinafter, the present invention will be described in more detail using embodiments with reference to the accompanying drawings.

The packaging box blank which concerns on this invention is shown. The assembled packaging box and lid according to the present invention are shown. The packing box and the lid structure integrated with it are shown. The structure of a lid is shown.

  The packaging box according to the present invention is a liquid-tight packaging box made of corrugated cardboard, which is formed mechanically or manually without using an adhesive. According to FIGS. 1 and 2, the box comprises a bottom surface 1, a long side folding surface 2, a short side vertical surface 3, a short side loading surface 4, and a short side loading surface back side 5. And angular bellows 6 and 7 that realize a liquid-tight angular structure. According to FIG. 1, such a packaging container according to FIG. 2 formed mechanically or manually without using an adhesive is obtained from one die-cut blank, in which surface 2, 3, 4, 5, 6 and 7 form a liquid-tight and leak-proof structure. The angle bellows 6 and 7 are bent toward each other by the inclined bent portion 18 toward the inside of the vertical surface 3.

  3 and 4, the present invention relates to a packing box and an individual removable lid structure 25 integrated therewith. What is important in this packing box is that the molded tongue 15 is formed at the outer end of the loading surface 4, and the lid 27 and the corner 27 of the flat portion 28 formed at the corner are guided so as to slide under the molded tongue. Is Rukoto. The molded tongue 15 is formed on the outer shoulder of the double bent portion 10.

  The long-side cut-off side 8 is also important in the present invention, and this cut-off side reinforces the long-side structure and at the same time removes the lid structure 25 that can be removed when stacking boxes. It functions as a support part. The forming tongue 15 is bent from the crease 17 between the vertical surface 3 on the short side and the loading surface 4 onto the surface 8 into a horizontal plane. The corner 27 functions as a locking means for the lid structure together with the tongue 15 and the surface of the side 8, and the flat portion 28 of the corner 27 is pressed between the tongue 15 and the surface 8 and is engaged with the position by friction. It has come to be stopped.

  The structure of the removable lid 25 is essentially a flat sheet, the width and length of which varies according to requirements. However, in most cases, the width of the lid 25 is actually the same width as the packaging box itself, or at least the same width as the opening itself. The length of the lid 25 is determined based on the tongue 15 so that the corner 27 of the lid is securely locked under the tongue 15. The length of the lid 25 is almost always the length of the inner end between the loading surfaces 4 and / or the length of the opening between the double-folded portions 16, or at least the length of the opening of the packaging box itself. . In addition to this, a transverse fold line 26 is formed at the center of the lid 25 that crosses the lid in the direction of the end of the short side of the packaging box. The fold 26 facilitates the installation of the lid 25 by guiding the flat portion 28 of the corner 27 so as to be positioned below the forming tongue 15. This structure is thus very simple compared to what is known in the art. Nevertheless, this solution allows the use of an advantageous sheet-like lid and increases the working speed of closing the box lid. Previously used solutions were more complex and costly to manufacture. A factor to consider is that cost effectiveness is undoubtedly one of the most important competitive advantages in the packaging industry.

  In addition to the above, the integrated lid structure is also suitable as a protective cover for a liquid-tight and liquid-tight packaging container. In this way, a particularly advantageous packaging box application is obtained which comprises a rigid sheet which is installed under the molding tongue 15 of the packaging box and functions as a separate removable lid structure 25. The packaging box includes a bent portion 18 that is inclined between the liquid-tight angle bellows 6 and the liquid-tight angle bellows 7. In addition to this, the box includes a conical folding portion 21 that is inclined between the folding surface 2 and the corner bellows 7, and the folding line 21 is inclined with respect to the fold 22 between the bottom surface 1 and the vertical surface 3. It is like that. In this way, the corner 27 of the lid structure is extremely tightly locked to the packing box, so that a conical structure inclined inside the box is obtained.

  Here, the packaging box comprises an integrated lid that functions as an individual structure 25. Thereby, a very good packaging box structure is formed together with the above-described embodiment. It will be apparent to those skilled in the art that the present invention is not limited to the above-described embodiments, but can be modified within the scope of the following claims.

Claims (5)

Bottom (1),
The long side of the box (2),
Formed from the vertical side (3) of the short side,
The vertical surface (3) is bent in a vertical posture from a fold (22) between the vertical surface (3) and the bottom surface (1), and the vertical surface (3) and the loading surface ( 4) in a packing box adapted to bend from a crease (17) to a horizontal plane and a removable lid structure (25) integrated therewith,
A molded tongue (15) is formed at an outer end of the loading surface (4), and a corner (27) of the lid structure (25) is guided so as to slide under the molded tongue. And a removable lid structure (25) integrated therewith.   The packaging box according to claim 1 and a removable lid structure integrated therewith, characterized in that the molded tongue (15) is formed on the outer shoulder of the double fold (10). 25).   The formed tongue (15) functions as a locking means for the lid structure (25) and the corner (27) together with the surface of the long side cut shape (8), and the tongue (15) 2. A packing box and a removable lid structure (25) integrated therewith according to claim 1, characterized in that it is pressed against said surface (8) and locked by friction.   The structure of the individual lid (25) integrated in the box is a flat sheet, and a fold line (26) crossing the lid in the direction of the short edge of the packing box is the center of the lid The packaging box according to claim 1, wherein the flat portion (28) of the lid (25) is guided to be positioned below the molded tongue (15). Removable lid structure (25). The packaging box is
A hard sheet installed under the tongue (15) of the packaging box;
The sheet functioning as an individual lid structure (25);
An inclined bent portion (18) between the liquid-tight angle bellows (6) and the liquid-tight angle bellows (7),
In the inclined cone fold (21) between the fold surface (2) and the angular bellows (7), the fold line is the fold line between the bottom surface (1) and the vertical surface (3) ( The packing box according to claim 1 and a removable lid structure (25) integrated therewith, characterized in that it is inclined with respect to 22).

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