WO2020139174A1

WO2020139174A1 - Packaging for food products and method for manufacturing same

Info

Publication number: WO2020139174A1
Application number: PCT/RU2020/000047
Authority: WO
Inventors: Дмитрий Викторович САВЕЛЬЕВ
Original assignee: Дмитрий Викторович САВЕЛЬЕВ
Priority date: 2018-12-28
Filing date: 2020-01-31
Publication date: 2020-07-02
Also published as: RU2714073C1

Abstract

The invention relates to the field of manufacturing packaging primarily for food products or products that contain or exude grease or moisture. The result is an increase in the range of technical solutions available. A packaging for food products contains viewing windows and consists of a paper and cellulose structural base material and a cellulose film, wherein the packaging is produced by laminating said base material with said cellulose film by applying a prefabricated cellulose film uniformly across the entire surface area of the base material with the aid of an adhesive composition, and the viewing windows are formed by applying the cellulose film in a single internally laminated layer over apertures punched out or cut out from the packaging base. A method for producing a packaging for food products having viewing windows consists in first cutting out or punching out viewing windows and removing the excess material from a paper and cellulose structural base material, laminating same with a cellulose film in a single internally laminated layer by applying a prefabricated cellulose film uniformly across the entire surface area of the base material with the aid of an adhesive composition, including over the windows in the base material of the packaging, and then cutting out or punching out the outline of a packaging blank, and assembling the finished packaging.

Description

FOOD PACKAGING AND METHOD

MANUFACTURING

The invention relates to the manufacture of packaging for predominantly food products or products containing or excreted fats and moisture.

When creating packaging for food products, the basis of which is pulp and paper material, it is most common to use either an extrusion lamination based on polymeric materials such as polyethylene or polypropylene, or the method of laminating a finished polymer film (polyethylene, polypropylene, polyethylene terephthalate or multilayer) as the protective inner layer. combined) using adhesive.

The problem is that the pulp and paper material is an environmentally friendly material in terms of its biodegradation rate, and the use of inorganic polymeric protective materials does not allow maintaining such characteristics for packaging where similar materials are used.

A known method of applying a barrier layer based on organic biodegradable materials by irrigation, as described in patent RU2626848C2.

It is also known to apply cellulose films or films based on polylactic acid or pectin, as mentioned in patent RU2487881C1.

Thus, the problem of creating a biodegradable material with a coating that protects against liquid or fat-containing media on the basis of cellulosic biodegradable material can be solved, but the creation of transparent viewing transparent areas protected by homogeneous material - windows in consumer packaging for the food industry is not disclosed. The method of creating inspection windows in such a biodegradable package is widely known by cutting holes in a material that previously has a protective moisture-proof and grease-resistant protective coating previously applied by the methods described previously, and gluing additional individual elements made of a polymeric material or films based on polylactic acid, pectin and the like, onto the formed hole with the help of additional specialized adhesive compositions with, as a rule, the property of residual stickiness, capable of gluing the materials of the protective material of a pulp and paper base and a separate window.

It should be noted that this method, firstly, requires the use of additional operations for gluing the transparent material of the window, and, secondly, requires the use of additional materials, such as additional adhesive in the place of gluing and, as a rule, thickened in comparison with the protective coated window material for the possibility of pasting and further operation. In addition, the glue points of the transparent window are visible when viewing the package from the side of its gluing, which imposes restrictions on the visual characteristics. Also, the use of the described technology imposes restrictions on the operation of the finished packaging in terms of the tightness of the gluing places of the transparent window, the reliability of such gluing and the permissibility of food contact with the mentioned specialized adhesive, since such contact can often not be excluded.

The present invention is aimed at eliminating the above disadvantages and solves several problems: - allows you to create a fully laminated biodegradable packaging based on pulp and paper material with transparent viewing windows;

- is a more economically viable technology due to the lack of an operation for pasting an additional window using an additional adhesive;

- does not impose restrictions on the operation of the finished packaging from the point of view of the tightness of the gluing places of the transparent window, the reliability of such gluing and the permissibility of food contact with the mentioned specialized adhesive, since the window coating with a transparent film is technologically performed in one layer with a protective lamination;

- does not impose restrictions on the visual characteristics from the side of the protective layer, as in the case of a separately glued window, since the coating of the window with a transparent film is technologically performed in one layer with a protective lamination and there is no pasting of additional material.

The technical result is the expansion of the arsenal of technical means.

The technical result is achieved due to the fact that the packaging for food products contains viewing windows and consists of a pulp and paper frame material-base and cellulose film obtained by laminating the aforementioned material-base with a cellulose film by the method of applying the finished cellulose film using an adhesive composition uniformly throughout the area of the base material, the viewing windows are formed by applying in a single layer with the internal lamination of the cellulose film over the cut or cut holes in the base of the package. Also, the technical result is achieved due to the fact that the method of obtaining packaging for food products containing inspection windows consists in preliminarily carving out or cutting out and removing a flash of formed inspection windows in a cellulose-paper frame-based material, laminated in one layer with the inner by lamination with a cellulose film by the method of applying the finished cellulose film using an adhesive composition uniformly over the entire area of the aforementioned base material, including over the windows in the base material of the package, after which the outer contour of the package blank is cut or cut out, and the finished package is assembled.

The most famous types of packaging where the invention can be applied are containers of various shapes and configurations with transparent viewing windows.

When using the invention, the frame material is subjected to preliminary die-cutting (cutting) and removal of a break (unnecessary material or waste) of the windows. Further, the material is subjected to lamination with a cellulose film by the method of applying cellulosic material in the form of a finished film using an adhesive composition uniformly over the entire area of the frame material. Thus, the packaging is obtained completely inside the cellulose film. At the same time, the windows are also closed with a film, forming a transparent area covered by a cellulose film.

Next, the container is cut out (cut down) and further assembled. The result is an environmentally friendly, biodegradable packaging that is resistant to fats and moisture.

To obtain a completely biodegradable cellulose packaging, a pulp and paper base with pre-prepared window openings and the method of glue lamination with a cellulose film with using environmentally friendly water dispersible adhesive composition.

In this case, as a rule, a cellulose film is used, made from raw materials of plant origin with a high degree of purification to obtain a highly transparent material, which is a necessary condition for obtaining transparent viewing windows. To obtain the necessary characteristics of preventing vapor permeability and water absorption, specially treated cellulose film, for example, processed by varnishing, can be used.

A cellulose film in combination with a water dispersion adhesive and a cellulose-paper base material with windows create an environmentally friendly biodegradable combination material.

The resulting combined material for food packaging has low gas permeability, as well as moisture and grease-resistant properties, which are vital qualities when creating food packaging.

To obtain a biodegradable cellulose package with transparent windows coated with a cellulose film in one layer with a protective cellulose lamination, window-shaped holes are preliminarily made in the frame-based material to produce transparent sections, as a rule, by die cutting and subsequent removal of the flake (waste). Further, a transparent cellulose film is uniformly applied to the cellulose-paper frame material - the base with the holes for the windows, using a water-based adhesive, uniformly covering the base material together with the holes for the windows in one layer, creating a protective coating of the pulp and paper material and covering window. It is important to note that with the described lamination process, the adhesive composition is applied to the base material for impossibility hit of the composition on the cellulose film in the places where the windows are covered with a film.

Next, a contour die-cutting is made of a cellulose base material with windows laminated with a cellulose film to create a contour of future packaging. Also in the process of contour cutting, scoring and banding channels are applied to the blank of the future packaging. Further, if necessary, the workpiece is subjected to subsequent assembly.

The result is an environmentally friendly biodegradable packaging made of a combination of material with viewing windows.

It should be noted that the present invention does not limit the use of pulp and paper material as the base material. Given the complete lamination of the inner surface of the package with a film that substantially protects the frame material from moisture and fats released by food products, other materials containing recycled paper and paper products and waste paper can also be used as frame materials. It should also be noted that, given the complete lamination of the inner surface of the packaging film, there is no direct contact of food products with the frame material-base, which can further expand the range of materials used as a frame material-base.

The invention is illustrated by drawings, where:

1 - cellulose-paper frame material-base;

2 - contour of transparent areas (windows);

3 - cellulose film;

4 - place of application of glue;

5 - combined glued material;

6 - contour of the packaging blank; 7 is a general view of the package with transparent areas.

In FIG. 1 shows a preliminary cutting of windows 2 in the base of the base material 1 using die-cutting forms on a die-cutting press.

It should be noted that the shape of the windows 2 is given as an example and in practice any shape and arrangement of windows can be used.

In FIG. 2 shows a lamination process of a base material 1 on a laminator using water-based glue. In the image, the base material 1 flows from right to left. In this case, the adhesive is applied evenly on the frame material-base 1 and then the cellulose film 3 is applied. The combined bonded material 5 is compressed for high-quality and uniform bonding.

In FIG. 3 shows the process of contour die-cutting of combined glued material 5 with windows 2 laminated with cellulose film 3 to create the contour of the future packaging 6. Also, in the process of contour die-cutting, scoring and banding channels are applied to the blank of the future packaging.

It should be noted that the die cutting circuit 6, as well as the scoring and scoring channels, are given as an example. In practice, any cutting circuit, scoring and scoring channels can be used.

In FIG. 4 shows an example of a finished food package with windows 2 after the assembly process.

It should be noted that the illustrated packaging is for example. In practice, the types of packaging with windows where the described technology is used can be any.

In FIG. Figures 5 and 6 show photos of a real food packaging made of pulp and paper material with viewing windows made of cellulose film. It should be noted that the type of packaging shown is for this example. In practice, the types of packaging with windows where the described technology and materials are used can be any.

Cellulose film material is obtained by extruding a solution of viscose into a dilute solution of sodium hydroxide. Next, the resulting film is cleaned to obtain a highly transparent material.

To obtain a biodegradable cellulose package with transparent windows coated with a cellulose film in one layer with a protective cellulose lamination, window-shaped holes are preliminarily made in a pulp-and-paper frame-based material to obtain transparent areas, as a rule, by die cutting and subsequent removal of the burr (waste )

Further, a transparent cellulose film is uniformly applied to the cellulose-paper frame material-base with openings for windows, using a water-based adhesive on a water-dispersion laminator, uniformly covering the base material together with the openings for windows in one layer, creating a protective coating for cellulose - paper material and covering the windows. It is important to note that with the described lamination process, the adhesive composition is applied to the base material to prevent the composition from getting onto the cellulose film in the places where the windows cover the film.

Next, a contour die-cutting is made of a cellulose base material with windows laminated with a cellulose film to create a contour of future packaging. Also in the process of contour cutting, scoring and banding channels are applied to the blank of the future packaging. Further, if necessary, the workpiece is subjected to subsequent assembly. It should be noted that to obtain both windows and the contour of the product, various methods of die cutting of material can be applied, both flat and rotational.

Claims

FORMULA

1. A food package containing inspection windows and consisting of a frame material-base and a cellulose film, wherein said package is made by laminating the specified material-base with a specified cellulose film by applying a finished cellulose film using an adhesive composition uniformly over the entire area of the material - basis, characterized in that the frame material is made of pulp and paper material or recycled pulp and paper material, the cellulose film is made by squeezing a solution of viscose into a dilute solution of sodium hydroxide, followed by cleaning, the adhesive composition is made of water dispersion, while the base material with viewing windows from the inside, it is covered with a cellulose film in one layer and contains scoring and grooving channels.

2. A method of obtaining packaging for food products containing inspection windows, comprising the steps of:

- preliminarily carve or cut out an envelope of formed viewing windows in a cellulose-paper-based frame material or frame-based material made from recycled pulp and paper products;

- remove the specified region of formed viewing windows;

a water dispersible adhesive is applied to the inner surface of the base material, onto which a cellulose film is applied uniformly in one layer, made by extruding the viscose solution into a dilute sodium hydroxide solution, followed by cleaning;

- scoring and face channels are applied.