RU2263055C1 - Packing container and container blank - Google Patents

Abstract

FIELD: packing means, particularly containers of polygonal cross-section specially constructed to contain liquids.

SUBSTANCE: packing container for liquid products formed of plastically deformable materials has cuboids shape and is formed by creating folds in blank or by other shaping methods. After that the blanks are connected by welding, heat sealing or by other sealing methods to create air-tight vessels. Container is composed of two similarly-shaped tray-like vessels by placing them so that edge flanges thereof face each other. Sheet partition is inserted between the vessels and the vessels are connected by sealing edge flanges to create common flange. The resultant container includes two isolated vessels. The common flange may be bent and secured to end walls of the container. Each tray-like vessel is formed of flat rectangular blank divided by fold lines into separate parts forming bottom, side and end walls. One wall may include valve to provide filling, sealing and pouring content from the container. The valve may have arbitrary shape. The vessel also has corned members including triangular areas defined by fold lines, end and corner flanges formed so that corner members of adjacent walls are bent inwards along fold lines. Each tray-like vessel has cuboids shape and end flanges thereof are bent outwards and extend in parallel to bottom thereof. Each corner flange is bent onto two adjacent flanges and flush with them along with simultaneous forming triangular parts of above corners defining dovetails in cross sections. End and corned flange parts to be connected are previously secured by adhesion or welding to create a single end flange along the full perimeter.

EFFECT: possibility to increase time of liquid freshness in opened container, possibility to simultaneously pack two liquids in single container, increased capacity due to reinforced structural members, reduced material consumption, improved air-tightness.

3 cl, 5 dwg

Description

FIELD OF THE INVENTION:

The invention relates to containers and packaging, in particular containers for packaging liquid non-saturated with carbon monoxide food products and blanks for them, made of plastically deformable flexible materials.

BACKGROUND OF THE INVENTION:

Widely known are packaging containers for liquid products made from sheet blanks of plastically deformable materials containing, for example, layers of paper, cardboard, thermoplastic, aluminum or metallized foil.

For example, a packaging container in the form of a rectangular parallelepiped with a gabled top (see A.S. RU 2157330, Cl. 65 D 5/42, Bull. No. 28 of 10.10.2000) and a packaging container in the form of a rectangular parallelepiped are known with triangular corner elements (see A.S. RU 2062248, Cl. 65 D 5/40, Bull. No. 17 dated 06/20/1996) - analogues of the Tetra Brik ®, Tetra Rex ® trademarks, Tetra Top ®.

These containers are made either from tape or from pre-prepared cutting of material by forming folds, joining them, filling containers with product, sealing finished packages by welding or thermal gluing, disconnecting individual containers if they are made from an “endless” tape and then giving each container commodity form.

Both types of containers are disposable packaging. The main disadvantage of such packages is the very limited time for using the contents of the containers after opening them due to the violation of the microflora of the contents of the packages, which indirectly limits their volume.

The aim of the invention is:

- the creation of a packaging container, allowing, all other things being equal, to increase the time it takes to use the contents of an open container when filling it with one type of product at least twice;

- obtaining the possibility of simultaneous packaging in one container of two different products;

- an increase in container capacity due to hardening of structural elements;

- saving of consumables in the manufacture of the container per unit volume of the packaged product;

- the creation of a packaging container by a one-time connection of its components by welding, thermal gluing or otherwise, allowing to obtain a sealed connection.

Both of the above devices are also the closest analogues of the invention.

SUMMARY OF THE INVENTION:

The essence of the invention lies in the fact that in the packaging container, made in the form of a rectangular parallelepiped from plastically deformable materials, an additional internal partition is introduced, dividing the volume of the container into two, as a rule, equal containers not communicating with each other. Additionally, two valves of arbitrary shape are installed in the upper part of the container, one for each of the containers through which filling, sealing and subsequent extraction of the contents of the package are performed.

Like the well-known packaging for liquid products, this container is intended mainly for packaging liquid foods that are not saturated with carbon monoxide, such as, for example, milk and dairy products, juices, fruit drinks.

As a rule, issues of long-term storage of packaged products are resolved by applying special technologies for their preliminary processing. Existing technologies are widely associated with the use of pasteurization and sterilization of products. Additionally, preservatives may be added to the product to extend its shelf life. To ensure high tightness and gas tightness of the package, materials containing several layers, for example, paper, cardboard, plastic, fillers, aluminum and metallized films, are usually used. The problem occurs when opening the container before using its contents. Foreign microflora that enters the package affects the entire contents of the container, limiting its shelf life and time of use, as well as indirectly affecting its volume.

It is possible to extend the time for using the contents of the container at least twice with the possibility of a general increase in its volume, all other things being equal, due to its execution in which the initial access to the contents of the package is limited, for example, to half its capacity. This is achieved by introducing an additional partition into the container.

The installed partition significantly strengthens the side and end walls mating with it, which makes it possible to manufacture a container of increased capacity. The presence of a separate valve in each of the internal containers allows the contents of the container filled with the same product to be extracted sequentially, which is equivalent to, all other things being equal, storage time of the open product at least twice. When filling containers with different products, the contents of the package can be used in any order.

The introduction of an internal partition into the container is equivalent to combining two independent packages of appropriate volumes, which allows saving packaging material per total product volume due to the presence of one common wall in each of the containers.

A variant embodiment of the device without an internal partition with one valve makes it possible to obtain a container of increased capacity due to significant hardening of the side and end walls at the junction.

The main features that distinguish the proposed invention from the closest analogues are:

a) the manufacture of a packaging container from three components - blanks: two identical containers, trays and one rectangular plate - partitions from cutting, as a rule, of the same type of materials, suitably formed and connected together in the same mating area;

b) the presence in the packaging container of a partition dividing the internal volume into two containers not communicating with each other;

c) installation in the upper part of the container of two valves of arbitrary shape, one for each of the internal containers;

d) the manufacture of a packaging container by a one-time connection of its constituent components by welding, thermal gluing or otherwise, allowing to obtain a sealed connection.

To ensure high manufacturability and increase productivity of the equipment, the packaging container is made of two identical container trays (application for the grant of a patent for invention No. 2004111259 of April 14, 2004), folded by edge flanges to each other with a rectangular sheet-plate partition placed between them. The linear dimensions of the mating components of the device are the same. The components of the container are made of the same materials.

When assembling the container, two identical containers-trays are folded with the edge flanges facing each other so that their valves are turned in one direction, they place a rectangular partition plate between them and connect them in the mating area of the common edge flange by welding, thermal gluing or otherwise allowing to obtain a tight connection.

The resulting common edge flange is bent to the side walls of the container and fixed if necessary.

A feature of the device is the molding of the container-tray by bending along the bend lines of a rectangular billet plate from the felling of the used material with the simultaneous formation of edge flanges and their subsequent preliminary fixation.

LIST OF FIGURES OF DRAWINGS AND OTHER MATERIALS

Graphic materials of the invention are presented in the form of five drawings, denoted, respectively, Fig.1 - Fig.5, which depict:

Figure 1: Schematic view of the finished packaging container

1 - capacity tray; 2 - an internal partition; 3 - fragments of a common edge flange (bent); 4 - an openable valve of an arbitrary type; 5 - view of the inner partition (cut out), shown conditionally.

Figure 2: Blank for capacity tray

1; 2; 9; 10; 11 - inflection lines; 3 - bottom; 4 - side wall; 5 - end wall; 6 - edge flange; 7 - an angular flange; 8 - radial line of inflection; 12 - areas of fixation of the device (shown conditionally for one angle).

Figure 3: Tray Capacity

3 - bottom; 4 - side wall; 5 - end wall; 6 - edge flange; 7 - an angular flange; 11 - line of inflection; 13 - a triangular element; 14 - corner.

Figure 4: Corner element in the formation stage

12 - area fixing device

Figure 5: View of the fixation area - A in Figure 3

a - a connecting layer; b is the area of additional molding.

DETAILED DESCRIPTION OF THE INVENTION

A general view of the finished container is shown schematically in FIG.

It is made of three blanks: two identical containers-trays 1 and one partition plate 2, made of them cutting of the same type of materials. In an embodiment, the partition plate 2 is not installed. Ready-made containers-trays are folded towards each other with edge flanges with simultaneous placement of partition plates between them. The resulting common edge flange 3 is formed by gluing, thermal welding, or another method of obtaining a sealed connection. In order to give the finished device the overall shape of a rectangular parallelepiped, the corners 14 of the edge flange of FIG. 3 are cut out, the edge flanges are bent to the corresponding walls with the possibility of their subsequent fixation. In the upper part of the container at the stage of forming containers-trays, valves of arbitrary shape 4 are installed, for example, in the form of a cylindrical threaded cover with a return pipe mounted in the upper end walls of the container through which the contents of the package are filled, sealed and removed.

A blank of sheet material for a container tray is shown in FIG. 2.

The container tray is made of a flat rectangular sheet plate containing, for example, several layers of paper, cardboard, plastic, fillers, aluminum or metallized films, separated by inflection lines 1 and 2 on the bottom 3, side walls 4 and end walls 5. On additional lines inflection 9, 10 and 11 are formed edge 6 and corner 7 flanges.

The capacity tray folds as follows:

The side walls 4 (Figure 2) and the end walls 5 are bent along the lines of the bends 1 and 2 in one direction with the simultaneous location of the corner elements of adjacent walls inside the formed container. Along the bend lines 9, 10 and 11, edge and corner flanges are formed by bending them outward of the container parallel to the bottom, and the corner flanges are bent to adjacent edge flanges flush with them. A general view of the tray capacity is shown in FIG. 3. At the final stage, the corner elements are formed (Figure 4) by fixing the corner flanges on the edge flanges by means of mating elements having the finished form triple the thickness of the material used by any method, for example, gluing or thermal welding (Figure 5). In a horizontal section, the corner elements form a dovetail shape.

To obtain a common, even, single-level surface of the edge and corner flanges, additional molding of section b in FIG. 5 is carried out, if necessary.

The inner partition 2 (Figure 1) is made of a sheet plate of the same type of material with linear dimensions equal to the size of the edge flanges of the finished containers-trays.

The possibility of carrying out the invention is confirmed by the fact that to implement the proposed solutions, you can use the technical means already used in this field. In particular, methods are known for manufacturing similar packaging containers for liquid products. In the present invention uses materials widely used in this industry. The manufacturing technology of the container allows the use of automated production lines, up to the packaging of finished containers in enlarged blocks.

Claims (3)

1. A packaging container for liquid products made of plastically deformable materials in the form of a rectangular parallelepiped by forming folds or other processes of shaping flat sheet blanks with their subsequent joining and forming a container by welding, thermal gluing or another method of obtaining a sealed connection, characterized in that the container is made of two identical containers-trays by folding them with edge flanges towards each other, placing foxes between them the bulkhead and the formation of a single container of two containers not interconnected with each other by hermetically connecting the workpieces in the region of the common edge flange with the possibility of folding and fixing on the side and end walls of the container, and the container-tray is made of a flat rectangular billet divided by bending lines into sections forming the bottom, side and end walls with the possibility of installation on one of the walls of the valve of arbitrary shape for filling, sealing and subsequent extraction the contents of the package, the corner elements, including the triangular parts bounded by the fold lines, the edge and corner flanges so that the corner elements of the adjacent walls are bent inward along the fold lines, the container-tray as a whole is shaped like a rectangular parallelepiped, the edge flanges are bent outward parallel to the bottom, each the corner flange is bent into two adjacent edge flanges flush with them with the simultaneous formation of the triangular parts of the corners having a dovetail shape in cross section, mating elements cr The left and right flanges are pre-fixed by gluing or welding to form a single edge flange around the entire perimeter. 2. The packaging container according to claim 1, characterized in that it does not contain an inner sheet wall and has a single container, and only one valve of arbitrary shape is installed in the upper part of the container. 3. The packaging container according to claim 1, characterized in that in cross section it has the shape of a square.

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