RU231016U1 - A cardboard folding food container made of food grade cardboard, intended primarily for fast food products - Google Patents

Abstract

The utility model of the cut of a folding cardboard container relates to the field of industrial production of food packaging and is used for packaging, mainly, fast food products. The container is a bottom and a lid with the shapes of truncated pyramids, with their bases turned towards each other when the container is in an assembled volumetric form, connected to each other by a fold line. The presence of additional fold lines on the side walls, which are at an angle of 45 degrees relative to the fold line of the side wall itself, allows you to transfer the container from a flat to a three-dimensional form, just shake it. Such a solution allows you to form parallel planes for adhesive flaps when bending, which are on the front and back walls of the bottom and lid of the container itself. The technical result consists in ensuring the ability of the container to be in two assembled forms: flat, for transportation, during its production and storage, and in a three-dimensional form, for its direct use.

Description

Field of technology

The utility model of the cut of a folding cardboard container relates to the field of industrial production of food packaging and is used for packaging, mainly fast food products. However, it can be used for packaging other food products.

State of the art

The closest analogues of this utility model are patent developments of similar cardboard containers:

Patent application US 4877178 A cardboard folding box.

https://patents.google.com/patent/US4877178A/en?oq=US4877178A

Patent application US 9938036 B2 clamshell container with anti-tie-down function.

https://patents.google.com/patent/US9938036B2/en?q=B65D5%2f667

Patent application JP3198254U Sealed clamshell box. https://patents.google.com/patent/JP3198254U/en?q=B65D5%2f667

Patent application P 1785359 B1 box-shaped container and blank. https://patents.google.com/patent/EP1785359Bl/en?q(B65D5%2f667)

Patent application RU 18696 U1 folding tray.

https://searchplatform.rospatent.gov.ru/doc/RU18696Ul_20010710?q=tray%20for%20fast%20food&from=search_simple&hash=-604809607

This utility model, in its principle of gluing and folding, is closest to patent application RU 18696 U1 folding tray, and in its assembled form (volumetric form) to patent application US 4877178 A cardboard folding box.

These developments can be considered prototypes of this utility model.

In essence, this utility model is a hybrid of these two developments.

But it solves the most important and fundamental problem of all fast food packaging of this type.

It allows you to fold yourself into a plane. Which significantly reduces the cost of its production, logistics and storage. This container is manufactured (glued), transported and stored flat, taking up a minimum of space. And its direct use at fast food enterprises is already carried out in a three-dimensional form. Thus, this container in a three-dimensional form has all the functions of ordinary fast food packaging, used everywhere. But at the same time it has one undeniable advantage: it takes up a minimum of space during storage and logistics.

The principle of folding this container is similar to the principle of folding, development according to patent application RU 18696 U1 "folding tray". However, this development in its functionality and form is intended for other purposes. The development according to patent application RU 18696 U1 has a main difference, it forms a rectangular single tray, while this utility model forms two truncated pyramids, turned with their bases to each other at the place of their connection. Like a regular fast food container, used everywhere, it has 8 gluing points, 4 pieces on the bottom of the container and 4 on its lid.

Disclosure of the essence of the utility model

The essence of this utility model is its ability to fold into a thin flat envelope. At the same time, all other useful functions of a regular container for fast food products are preserved, following the example of the development under patent application US 4877178 A. This utility model of the container can be in two assembled forms: flat for transportation, production and storage, and in a three-dimensional form for its direct use. When the products for which it is intended are packed in it. In order to transfer the container from a flat to a three-dimensional form, it is enough to simply shake it.

This technical result is achieved by bending the side walls of the container inwards. This is possible due to the presence of additional bending lines on the side walls, which can be at angles ranging from 25 to 65 degrees, in the best case 45 degrees, relative to the bending line of the side wall itself. This solution allows for the formation of parallel planes for the adhesive valves, which are located on the front and rear walls of the bottom and the lid of the container itself, when bending.

Description of drawings

Fig. 1 shows the layout of the container.

All cutting elements are numbered from 0 to 11.

Moreover, the cutting elements that have mirror analogues on it have additional ordinal numbering, highlighted in brackets (n).

Where n is the ordinal number of the mirror element itself.

Example: number 3(1) is the left rear adhesive flap of the container bottom, and number 3(4) is the right front adhesive flap of the container bottom.

All drawings are presented face to face with the seal. That is, the sides of the person looking at the drawing coincide with the sides of the drawing itself.

Numbering schedule:

0 - base of the container bottom.

1(1) - side, left wall of the container bottom.

1(2) - side, right wall of the container bottom.

2(1) - left, rear forming plane of the container bottom.

2(2) - right, rear forming plane of the container bottom.

2(3) - left, front forming plane of the container bottom.

2(4) - right, front forming plane of the container bottom.

3(1) - left, rear adhesive valve of the container bottom.

3(2) - right, rear adhesive valve of the container bottom.

3(3) - left, front adhesive valve of the container bottom.

3(4) - right, front adhesive valve of the container bottom.

4 - front wall of the container bottom.

5 - rear wall of the container bottom.

6 - rear wall of the container lid.

7(1) - side, left wall of the container lid.

7(2) - side, right wall of the container lid.

8(1) - left, front forming plane of the container lid.

8(2) - right, front forming plane of the container lid.

8(3) - left, rear forming plane of the container lid.

8(4) - right, rear forming plane of the container lid.

9(1) - left, front adhesive valve of the container lid.

9(2) - right, front adhesive valve of the container lid.

9(3) - left, rear adhesive valve of the container lid.

9(4) - right, rear adhesive valve of the container lid.

10 - front wall of the container lid.

11 - base of the container lid.

Fig. 2 shows a layout with dimensions, with additional explanations of the specific corners of the container outline.

Fig. 3-8 shows 3D projections of the container in volumetric form from different sides. With an open and closed lid.

Fig. 9 and 10 show various (transparent) 3D projections of the container in volumetric form from different sides. With an open and closed lid.

Implementation of a utility model

This utility model can be made from any food cardboard, following the example of GOST 32096-2013 “Cardboard for packaging food products”.

The thickness of the cardboard used for this utility model may vary from 0.2 mm to 0.5 mm. If you use food cardboard less than 0.2 mm, this will lead to a significant weakening of the strength of the container structure itself. And if you use cardboard thicker than 0.5 mm, this will significantly complicate the gluing (folding) of the structure during its production, since when gluing (folding) this utility model, many layers of cardboard are formed, superimposed on each other, and the excess thickness of the material used can lead to deformation of the container structure, as well as to its incorrect, uneven folding (gluing).

It is possible to apply various types of offset or digital printing on the used cardboard, as well as other types of cardboard processing, such as a laminating layer, foil stamping, embossing and cardboard embossing.

The internal and external dimensions of the container itself, as well as the angles of the walls on the bottom and lid of the container, forming the angle of the truncated pyramid when the container is in a three-dimensional form, may be different. Depending on the volume of the fast food product itself. But the angles of the truncated pyramid themselves must be equal or differ from each other by no more than 5 degrees, depending on the thickness of the material used. This is shown in more detail in Fig. 2. The thicker the material used, the greater the difference in the angles of the edges between the front, back and side walls of the lid and bottom of the container. But no more than 5 degrees.

For example, the cardboard used has a maximum permissible thickness of 0.5 mm. Then the angles of the front edges should be approximately 3-5 degrees larger than the angles of the side edges of the container. If the side edges of the lid and bottom have angles of 100 degrees as shown in Fig. 2, relative to the fold line, then the angles of the front and back walls of the lid and bottom of the container should be 103-105 degrees. We are talking about angles that form a truncated pyramid figure. When the container is in a three-dimensional form. This is how thickness compensation is made when folding (gluing) the container.

Ideally, these angles are equal to each other. But as production practice shows. For smooth folding (gluing), it is necessary to add compensation for the thickness of the material. In the form of a difference in the angles of the slope of the faces of a truncated pyramid, if we talk about the volumetric view.

On the plane, these angles are shown in Fig. 2. There they are in the ideal version and both are equal to 100 degrees.

But the angles of the fold lines that form planes parallel to the adhesive flaps during gluing (folding) can be in the range from 25 to 65 degrees. And these degrees depend on the length, width and height of the container itself. But these lines themselves should not intersect on the side edges, the maximum permissible option is when they meet at one point in the center of the side edge of the lid or bottom of the container, both on the left and on the right side. Ideally, the angles of inclination are 45 degrees. However, depending on the production equipment and its features on which they are produced (folding and gluing machines). The angles of inclination of the fold lines that form planes parallel to the adhesive flaps can vary in the range from 25 to 65 degrees. As signed in Fig. 2.

The gluing of the container structure is carried out by applying an adhesive layer through a glue nozzle onto the folding and gluing lines.

It is allowed to use various dispersion printing adhesives or various types of hot melt adhesives used in printing or packaging production. It is also allowed to glue on printing double-sided tape. From different manufacturers. Depending on the type, thickness of the cardboard or the presence/absence of various types of cardboard finishing (lamination, foil stamping) as an example.

The contour cutting is carried out on special automatic or semi-automatic cutting equipment (cutting presses).

Such as https://sblmachinerv.com/die-cutting-machine/sbl-1050se/

"The link to the manufacturer's website is provided as an example."

To perform contour cutting, a pre-prepared die is installed in the cutting machine. Manufactured according to the cutting drawing. It is allowed to place several pieces of cutting on the die itself. This allows for the production of several units of container cutting at once in one stroke.

The die-cut sheets with pre-applied printing and/or other types of cardboard processing are loaded into the die-cutting equipment, the die-cutting form is installed, and it is adjusted. And after this, when the die-cut contour is adjusted according to the printing and all the marks on the printed sheet match, the cutting process is started.

It is also possible to make a container cut by cutting it on plotter equipment. When each individual contour of the container is cut and creased on a plotter. Also according to a previously prepared drawing and on sheets of cardboard fitted for printing. This method does not imply the use of special stamping forms.

Claims (4)

1. A cardboard folding container for food products, made of cardboard suitable for food products, intended primarily for fast food products, which is a bottom and a lid with the shapes of truncated pyramids, with their bases facing each other when the container is in an assembled volumetric form, connected to each other by a fold line, wherein on each of the side walls (1(1), 1(2), 7(1), 7(2)) there are two additional fold lines directed towards each other at the free edge of the side wall, which are at angles in the range from 25 to 65 degrees, in the best case 45 degrees relative to the fold line of the side wall itself. 2. The container according to item 1, characterized in that it allows itself to be folded into a plane when it is already in an assembled, three-dimensional form, by bending the side walls inward of the container itself, due to additional fold lines that form planes during folding that are parallel to the adhesive flaps that are located on the front and rear walls of the bottom and lid of the container itself and that are glued to these planes. 3. A container according to item 1, characterized in that it has fold lines on the side walls to which the adhesive flaps are glued, allowing the container to be glued, folded, transported, and stored flat. 4. A container according to item 1, characterized in that it can be in two types of assembled state, namely, in a flat state for its production, transportation and storage, and in a three-dimensional state for its direct use, when the products for which it is intended are packaged in it.