RU229202U1 - Container for packaging finished product - Google Patents

Abstract

The utility model relates to the field of manufacturing cardboard packaging, primarily for transporting and storing food products, and more specifically to packaging products having a polygonal cross-section, in particular to a container intended for packaging a finished product, including for sealing, manufactured by cutting out a shape from a cellulose-paper material coated with a thermoplastic polymer, and by forming a volumetric container using a thermoforming method. The technical result consists in improving the stacking index in a modification with a plastic lid due to rigidly fixed shaping side walls serving as additional ribs of the structure, preventing possible distortions of the formed container arising under the influence of moisture, condensate and elevated temperatures of the finished product placed inside, and also providing a large contact area with the upper container and evenly distributing the load during stacking. A container for packaging a finished product, consisting of an octagonal base, characterized in that it is made of a solid frame made from a single blank of a flat sheet, formed into a three-dimensional view on equipment, with main side walls and additional form-forming side walls, with a rigid glued flat flange along the perimeter of the upper edge, with bendable flanges on the corner flaps for additional fixation of the flat flange, which are fixed with bendable flanges on additional form-forming side walls, wherein the bendable flanges on the additional form-forming side walls are attached both on top of the mating flat flanges and under them, made of cellulose-paper material coated with a thermoplastic polymer. 10 fig.

Description

The utility model relates to the field of manufacturing cardboard packaging, primarily for transporting and storing food products, and more specifically to packaging products having a polygonal cross-section, in particular to a container intended for packaging a finished product, including for sealing, manufactured by cutting out a shape from a cellulose-paper material coated with a thermoplastic polymer, and by forming a volumetric container using the thermoforming method.

State of the art.

Thermoforming is the most common method of producing plastic products: this method is used to manufacture most disposable plastic containers and other plastic products used in everyday life (for example, a thermoformed plastic tray under Russian patent for utility model No. 205248). No less popular is the use of thermoforming technology in the manufacture of cardboard packaging, trays, and containers for food products. At the same time, the use of this technology in the field of manufacturing cardboard packaging (cellulose and paper material) for food products that release fat and moisture is associated with a number of difficulties due to the need to prevent unintentional greasing and/or wetting of corners or unprotected ends of cardboard in the area of the finished product, as well as possible distortions of the formed container arising under the influence of moisture, condensation and elevated temperatures of the finished food product. An additional advantage of this technology as applied to cardboard packaging (cellulose and paper material) is the possibility of using the latter for packaging food products with specialized film: sealable containers with food products placed in them are the optimal solution for fast (serial) packaging of a finished product (for example, a tray and a method for sealing semi-finished products according to the Russian Federation patent for invention No. 2774985). Sealing ensures control and protection against unintentional opening of the package during storage and transportation, ease of opening during direct use. Transparent film provides sufficient visibility of the product.

An analogue of the claimed utility model is a tray with a sealed corner valve design according to the Russian Federation patent for utility model No. 212527.

The corner valves (6) of the claimed utility model do not have additional cutouts, the fastening to the frame occurs due to welding of a layer of thermoplastic polymer on the bending flanges of the corner valves (7) and parts of the flat flanges on the main side walls (5) with the reverse side of the flat flange of the additional shaping side walls (8), whereas the design of the corner valves of the analogue implies the mandatory presence of a cutout on one of the triangular generatrices of the valve for soldering the layer of protective coating at the place of the cutout with the other triangular generatrix, which is its main disadvantage.

The prototype of the claimed utility model is a container consisting of a container with a flange fastened in the angular mating parts and a docked lid according to the Russian Federation patent for utility model No. 190177. The prototype is a container with a rectangular base expanding towards the top, with a formed upper flange. The prototype also has an L-shaped upper flange with a preset angle of inclination of the upper flange relative to the horizontal plane from 10 to 30 degrees, which is its significant disadvantage.

The task of the claimed utility model is to eliminate the shortcomings of the analogue and prototype. The technical result is an improvement in the stacking index in the modification with a plastic lid, due to rigidly fixed shaping side walls, serving as additional ribs of the structure, preventing possible distortions of the formed container, arising under the influence of moisture, condensate and elevated temperatures of the finished product placed inside, and also providing a large contact area with the upper container and evenly distributing the load during stacking.

Brief summary of the utility model.

A container for packaging a finished product, consisting of an octagonal base, characterized in that it is made of a solid frame made from a single blank of a flat sheet formed in a three-dimensional form, with main side walls and additional shaping side walls, with a rigid glued flat flange along the perimeter of the upper edge, with folding flanges on the corner flaps for additional fixation of the flat flange, which are fixed with folding flanges on additional shaping side walls, wherein the folding flanges on the additional shaping side walls are fixed both on top of the mating flat flanges and under them, made of cellulose-paper material coated with a thermoplastic polymer.

A smooth, flat flange along the upper contour of the utility model is suitable both for sealing the finished product with film and for sealing the container with a plastic lid without additional actions for assembling/forming the container elements.

The essence of the utility model is explained by drawings:

Fig. 1 shows the container blank in an unfolded form.

Fig. 2 shows the container in assembled form from the front.

Fig. 3 shows the container in assembled form from the rear.

Fig. 4 shows a container with folding flanges on additional walls with rounding (8), forming a quadrangle along the upper contour.

Fig. 5 shows the fixation of the corner valves (7) and parts of the flat flanges on the main side walls (5) with the reverse side of the flat flange of the additional shaping side walls (8) from four corners along the upper contour of the container.

In Fig. 6, the hatching shows the zone of heat-welding of the thermoplastic polymer layer on the bending flanges of the corner valves (7) and parts of the flat flanges on the main side walls (5) with the reverse side of the flat flange of the additional shaping side walls (8).

Fig. 7 shows the connection points of the side walls (9), which form a sealed seam by welding a layer of thermoplastic polymer inside the corner valves (6) when the development is heated by the punch and matrix.

In Fig. 8, the heat-sealing zones inside the corner valves (6) are shown in hatching when the development is heated by the punch and matrix at the junction of the side walls (9), forming a sealed seam.

Fig. 9 shows the container in assembled form from the side.

Fig. 10 shows a U-shaped flat flange (5).

where 1 is a frame made from a single piece of flat sheet formed into a three-dimensional shape on equipment;

2 - octagonal base;

3 - main side walls;

4 - additional shaping side walls;

5 - a flat flange suitable for sealing the finished product, rigidly fixed with folding flanges on additional shaping side walls (8);

6 - corner valves;

7 - bendable flanges of corner valves (6) for additional fixation of the flat flange (5);

8 - bendable flanges on additional shaping side walls;

Modifications of bending flanges on additional shaping side walls (8):

9 - place of connection of side walls;

10 - the extreme point of conjugation of the walls of the corner valve. Disclosure of the utility model.

A container for packaging a finished product, consisting of an octagonal base (2), characterized in that it is made of a single frame (1), made in one piece from a flat sheet formed into a three-dimensional view on equipment, with main side walls (3) and additional shaping side walls (4), with a rigid glued flat flange (5) along the perimeter of the upper edge, with folding flanges (6) on corner flaps (7) for additional fixation of the flat flange, which are fixed with folding flanges on additional shaping side walls (8), wherein the folding flanges on the additional shaping side walls are fixed both on top of the mating flat flanges and under them, made of cellulose-paper material coated with a thermoplastic polymer.

Stages of container formation:

1. Coating the cardboard web with a thermoplastic polymer using the extrusion method.

2. Cutting out flat blanks.

3. Formation of a volumetric container using a punch and matrix on equipment using the thermoforming method.

Implementation of the declared utility model.

A flat blank coated with thermoplastic polymer is fed into the thermoforming machine, along the guides it enters the matrix and punch area, repeating the shape of the container and heated to 180°, where all the elements of the container are folded and bonded to each other. Bonding occurs due to welding of the thermoplastic polymer to the surface of the cardboard. After the thermoforming operation, the container does not require additional assembly by the consumer and is completely ready for use.

Claims (1)

A container for packaging a finished product, consisting of an octagonal base, characterized in that it is made of a solid frame made from a single blank of a flat sheet formed in a three-dimensional form, with main side walls and additional shaping side walls, with a rigid glued flat flange along the perimeter of the upper edge, with folding flanges on the corner flaps for additional fixation of the flat flange, which are fixed with folding flanges on additional shaping side walls, wherein the folding flanges on the additional shaping side walls are fixed both on top of the mating flat flanges and under them, made of cellulose-paper material coated with a thermoplastic polymer.

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