RU228071U1 - Polymer packaging bag - Google Patents

Abstract

The utility model relates to flexible packaging. The polymer packaging bag is made of a flexible sheet blank having two rectangular side walls that are connected to each other along the fold lines by the end walls, each of which is made in the form of a fold facing inward between the side walls. In the lower part, the side walls are connected to each other to form the bottom of the bag. In the upper part, at a distance from the sealed edge, a zipper is made along the width of the side wall, above which a laser notch line is made to separate the upper edge of the bag. A hermetic fold is made along all the fold lines from the bottom to the top, and a polymer strip is fixed on one wall below the level of the zipper line, in the central part of which two notches are made parallel to the sides of the strip to separate a part of the material from the strip between the notches and to form a handle. This utility model is aimed at achieving a technical result consisting in the convenience of carrying the bag and pouring out the contents from it. 5 pts. f-ly, 2 ill.

Description

The utility model relates to flexible packaging, in particular to packaging bags made of flexible polymer material, and can be used for storing and transporting/carrying various materials, preferably bulk materials (solid powder and/or bulk materials/products).

In particular, the utility model considers an example of a large-capacity package (for example, up to 5 kg), which coincides with the design of a known doy-pack type - a special type of flexible sealed packaging, which is a dense plastic bag with a bottom made of the same material, which allows the package to stand upright when filled. The fundamental feature of a doy-pack is a multi-seam (from one to five seams) design with a flexible bottom. A doy-pack is a flat bag with a fold at the bottom. When the bag is filled with contents, the fold opens, and the bag forms a flat wide base, allowing the doy-pack to stand. Additional rigidity, due to which the doy-pack can easily be placed upright, is given to this type of packaging by the design features of the welded seams. Doy-pack is used for manual or automated packaging of a wide variety of food products (coffee, tea, seasonings, dried fruits, juices, mayonnaise, candies, etc.), as well as any other non-aggressive substances (seeds, chemicals, tobacco, etc.).

Thus, a polymer packaging bag is known, used both for small weights and for storing and transporting weighed materials, which is made of a flexible sheet blank having two rectangular side walls, which are connected to each other along the fold lines by end walls, each of which is made in the form of a fold facing inward between the side walls, in the lower part the side walls are connected to each other to form the bottom of the bag, and in the upper part at a distance from the sealed edge a zipper is made on part of the width of the side wall (US 2017334608, B65D30/20, B65D33/25, B65D33/20, published 23.11.2017).

This solution was adopted as a prototype.

Bags of this design are easy to use if they are loaded with a weight of up to 1 kg. Such a bag can lie on its side if the bottom is made in the form of a rolled seam, or stand up if the bottom is made in the form of an opening fold. In this case, the user has the ability to hold the bag in one hand, and turn it over or tilt it with the other to pour out the contents through the opening obtained when opening the zipper. But with an increase in weight, for example, from 2.5 kg to 3-5 kg, such a bag is convenient to carry if there is a cut-out handle at the top. But this handle becomes useless when used at the moment of pouring out the product, since in order to open the bag, you first need to tear off the handle and only then the zipper can be opened. In this case, when using the bag, you need to use two hands to hold it in the air (hold the bag with one hand and tilt it with the other), and it becomes inconvenient to pour out the contents from it, since there is no control over the portion size of the product coming out through the zipper opening. To adjust and control the volume of the poured out product, you need to not only hold the bag with two hands, but also support it in the upper area, since the pouring out and the volume of the product directly depend on the tilt of the upper part. This problem is solved by leaving the bag standing or lying on the surface, and taking the product out of it through the zipper opening with a spoon or ladle. As the product is used up, the bag loses its shape, and the product itself, when pouring out, shifts to the side that is tilted lower. In this case, a problem with its emptying arises, since this process requires raising the bottom above the zipper opening, but this leads to an uncontrolled pouring out of an increased volume of product. As a result, it becomes clear that bags of this design can be used for storing and transporting bulk products, but are inconvenient for metered pouring of this product.

This utility model is aimed at achieving a technical result consisting in the convenience of carrying the package and pouring out the contents from it.

The specified result is achieved in that the polymer packaging bag is made from a flexible sheet blank having two rectangular side walls which are connected to each other along the fold lines by the end walls, each of which is made in the form of a fold facing inward between the side walls, in the lower part the side walls are connected to each other to form the bottom of the bag, and in the upper part at a distance from the sealed edge a zipper is made along the width of the side wall, above which a laser notch line is made to separate the upper sealed edge of the bag, while a hermetic fold is made along all the fold lines from the bottom to the top, and on one wall below the level of the zipper line a polymer strip is fixed, in the central part of which two notches are made parallel to the side sides of the strip to separate a part of the material from the strip between the notches and to form a handle.

In this package, the bottom can be made in the form of a fold facing inward between the side walls and connected to the end walls along the fold lines, or in the form of a fold formed by placing the side walls on the end walls and bending the bottom of the package towards the side wall.

In the package, in the upper part, the side walls can be pressed against the end walls and connected to each other along the edge.

The line of the zipper is made transverse and straight, or this line is made curved in the direction of the upper sealed edge of the package.

And on the inward-facing fold line of the end wall between the side walls, microperforation can be performed.

The specified features are interconnected and are essential to form a stable set of essential features sufficient to obtain the required technical result.

This utility model is illustrated by a specific example of implementation, which, however, is not the only possible one, but clearly demonstrates the possibility of achieving the required technical result.

Fig. 1 - sheet blank for making a package;

Fig. 2 - view of the package handle.

According to this utility model, the design of a polymer packaging bag used for storing and transporting bulk material of large weight, for example, up to 5-10 kg, is considered. Dry pet food (as an example) may be one such product.

The package is made from a flexible polymer sheet blank (Fig. 1), which consists of walls sequentially connected to each other through fold lines, arranged in the following order: first side wall 1, first end wall 2, second side wall 3, second end wall 4. The end walls are conditionally divided along the longitudinal fold line 5 into two parts 6 and 7, connected to each other along this fold line 5, and each part is connected along the fold line 8 with the adjacent side wall.

All walls are made rectangular, with the width of the side walls being greater than the width of the end walls. All walls in the sheet blank are made of the same height. For the sheet blank, polymer sheet material is used (single-layer or multilayer), which is used to manufacture polymer bags and polymer sacks (PET (polyethylene terephthalate), the film thickness varies from 80 to 160 microns and is used in two layers - internal polyethylene and external lavsan).

During assembly, edge 9 of side wall 1 is connected with end wall 4 by means of a hermetically sealed fold, thereby forming a shell. Then, on the end walls, an inward-facing fold is formed between the side walls by bending each part 6 and 7 of the end wall relative to the side walls into the cavity of the shell. The bending lines of the fold parts relative to the side walls are hermetically folded, forming a rigid rib. These ribs provide the shape of the package. In the upper part of the shell, the folded edges of the ribs are pressed against each other and fastened (thermally) on a small section 10, spaced from the top of the shell. It turns out that the fold parts in the upper part of the shell are connected to each other, forming a rigid side edge, which leaves the upper part of the package straightened.

The same fold is formed in the bottom. The lower edges of the 11 side walls are bent inward into the shell, and their free edges are connected to each other with a sealed fold to obtain a fold facing inward into the shell. The lower edges of the 12 end walls are also bent inward into the shell and connected with a fold to the end edges of the fold in the bottom. With this design, after filling the package with the product, the bottom straightens out, expanding the end folds and this allows the package to be placed vertically on the surface.

As an option, the bottom can be made in the form of a fold formed by superimposing the side walls on the end walls and bending the bottom of the package to the side of the side wall. In this case, the package will not stand vertically, it can only lie on its side.

Pressing the side walls to the end walls in the upper part and connecting them together along the edge allows two edge rigid ribs to be formed, which straighten the upper part of the bag. This allows a zipper 13 to be made in the upper part at a distance from the upper edge along the width of the side wall, above which a laser notch line 14 is made to separate the upper edge of the bag.

The line of the zipper can be made transverse and straight, or the line of the zipper can be made curved in the direction of the upper edge of the package.

After filling the package with the product and closing the zipper, the upper edge of the package located above the laser notch line is hermetically folded. When opening the package, the user tears the package along the laser notch line and separates the folded edge from the rest of the package. After this, the zipper can be opened to unload and pour the product.

A slotted handle (not shown) can be made in the area between the laser notch line and the folded edge, which will make it easier to carry a heavy package. But when opening the package, this part with the slotted handle is removed. Therefore, in the future, the user lifts and moves the package with both hands, which creates difficulties in the measured pouring of the contents. To solve this problem, a transversely located polymer strip 15 made of the material of the package or another polymer material is fixed on one side wall under the zipper.

In the central part of this strip, parallel to its lateral sides, two notches 16 are made, allowing part 17 of the material between the notches to be separated from the strip (Fig. 2). The part of the material of the strip located between the notches and separated from them is used as a handle made on one block wall of the package under the zipper. This allows the user, holding this handle, to lift the package to a given height, placing the other hand under the bottom, tilt it and adjust the tilt of the package with the hand that holds the handle.

In addition, when carrying, it is possible that the slotted handle breaks. Then the user can carry the bag by holding it by the handle on the side wall.

This strip can be thermally fixed to the outer surface of the side wall of the package. As an option, the strip is attached to the inner surface of the side wall of the package, and the perforations are made on the outer surface of the same side wall.

As an option, such a strip can be fixed longitudinally along the height of the package on any wall: side or end. The main thing is that this strip is located below the level of the zipper line. For example, Fig. 2 shows an option where the strip is fixed in the fold of the end wall. This allows the package to be carried horizontally and also ensures the convenience of holding the package when pouring out the contents of the product.

This utility model is industrially applicable and allows for increased ease of use when carrying a package and/or pouring contents out of it.

Claims (6)

1. A polymer packaging bag characterized in that it is made from a flexible sheet blank having two rectangular side walls that are connected to each other along the fold lines by end walls, each of which is made in the form of a fold facing inward between the side walls, in the lower part the side walls are connected to each other to form the bottom of the bag, and in the upper part at a distance from the sealed edge a zipper is made along the width of the side wall, above which a laser notch line is made to separate the upper sealed edge of the bag, while a hermetic fold is made along all the fold lines from the bottom to the top, and on one wall below the level of the zipper line a polymer strip is fixed, in the central part of which two notches are made parallel to the sides of the strip to separate a part of the material from the strip between the notches and to form a handle. 2. A package according to item 1, characterized in that the bottom is made in the form of a fold facing inward between the side walls and connected to the end walls along the fold lines. 3. A package according to item 1, characterized in that the bottom is made in the form of a fold formed by superimposing the side walls on the end walls and bending the lower part of the package onto the side of the side wall. 4. A package according to item 1, characterized in that in the upper part the side walls are pressed against the end walls and connected to each other along the edge. 5. A package according to item 1, characterized in that the line of the zipper is made transverse and rectilinear. 6. A package according to item 1, characterized in that the line of the zipper is curved in the direction toward the upper sealed edge of the package.