RU2372262C2 - Container with hollow bottom - Google Patents

Abstract

FIELD: packaging industry. ^ SUBSTANCE: container includes an upper and lower end between which there is a wall with a cross section in the form of a closed circuit forming an internal part of the container. The container also contains a lower part stetching from the middle of the distance between the upper and lower end of the container in the direction of the lower end of the container. The lower end of the container is closed by a hollow bottom manufactured in the form of a big bottom valve located in the internal part of the container. In this case the big bottom valve has approximalely the same size and shape as the cross section of the container. And the the big bottom valve is held above the lower end with a retaining striation on the one side and with a small valve on the other side. The retaining striation is attached to the big bottom valve along the connection line located above the lower end of the container. Ther small valve is attache to the big bottom valve approximalety opposite the said connection line. The retaining striation and the small valve are manufactured in the form of the wall parts protruding over the lower end of the container and bent aside of the internal surface of the wall along the bending lines. The bending lines of the retaining striation and the small valve are spaced from the lower end of the container in the direction of the upper end of the container. ^ EFFECT: alleged invention specifies setting up a container quite stable, simple and cheap to manufacture. ^ 3 cl, 5 dwg

Description

Technical field

The present invention relates to a container for packaging personal care products, in particular hygienic absorbent personal care products. The packaging container has a hollow bottom, i.e. its plane is located above the lower edge of the container wall. The hollow bottom is made in the form of a large bottom valve having a size and cross-sectional shape of the container and held in place by a fixing strip and at least one small valve.

State of the art

Packaging containers with an oval cross section and a closed bottom are known. Typical descriptions can be found in EP No. 881151; US No. 6152369 and US No. 6170740. However, all containers proposed in these references have one common drawback: their bottom is more or less flat and attached to the bottom edge of the container. It was found that such flat bottoms attached to the lower end of the container often tend to be slightly convex, in other words, they protrude slightly beyond the lower edge of the side walls of the container. As a result, such containers are not stable and often fall due to their relatively small contact area between the bottom and the surface on which they are installed.

Therefore, the aim of the present invention was to provide a container with an oval cross-section and a closed bottom, which would not have the disadvantages of the known containers and stood stably.

A further objective of the present invention was to provide such a container that would be simple and cheap to manufacture.

SUMMARY OF THE INVENTION

The present invention is a container comprising a wall having an inner and outer surface, as well as an upper end and a lower end. The container has a lower part extending from the middle of the distance between the upper and lower ends of the container towards the lower end of the container. The bottom end of the container is closed by a hollow bottom, which is made in the form of one large bottom valve having approximately the size and cross-sectional shape of the container. A large bottom valve is located in the interior of the container and is held in place by a fixing strip that is attached to the large bottom valve along a connection line that is removed from the lower end of the container. The container further includes a small valve attached to a large bottom valve approximately opposite said connection line. Due to this design, the large bottom valve is spatially remote from the lower end of the container to the upper end of the container, and thus a hollow bottom is formed. As a result, the container stands exclusively on a closed loop of the lower edge of its wall. Thus, problems associated with a non-flat bottom are eliminated. In a preferred embodiment, the container is formed from one piece of a combined cardboard blank, which makes the manufacture of the container very economical and allows the container to be formed directly on the packaging line.

Brief Description of the Drawings

Figure 1 illustrates the combined preform from which the container 1 is formed in a preferred embodiment of the present invention.

Figures 2 and 3 illustrate views from different sides of the aforementioned combined blank.

Figure 4 illustrates the formation of the container of the present invention, namely by wrapping the two parts 2a and 2b of the wall 2 towards each other and attaching the connecting strip 2c to the inner surface of the opposite wall part 2a. Then the bottom is formed by turning the large bottom valve 3 until it contacts three small valves 4.

Figure 5 shows a formed container 1 with a closed bottom. It can be seen that the large bottom valve 3 is removed from the lower end of the container 1 by means of a fixing strip 5 to its length. Small valves 4 are formed by bending the protruding parts of the wall 2 along lines 6 spaced from the lower edge of the wall of the container 1, since the contours of the small valves 4 are cut beyond the lower edge of the wall 2. Thus, the small valves 4 and the fixing strip 5 are removed from the lower end container 1.

DETAILED DESCRIPTION OF THE INVENTION

The container of the present invention is made of a solid material, usually a sheet of cardboard. As used herein, the term “solid material” refers to materials having at least some bending stiffness, that is, capable of substantially maintaining their original shape. Examples of such a solid material in the context of the present invention are: wrapping paper, sheet cardboard, card sheet, reinforced paper, corrugated or the like, or combinations thereof. Other examples of solid materials that can be used are plastics or rubber-like polymeric materials that can substantially retain their shape.

“Bottom of the wall” refers to a part of the wall extending from the middle of the height of said wall, defined by half the distance between the upper and lower ends of the container towards the lower end of the container.

"Inner" herein means the interior volume of a container bounded by a wall.

The wall of the container may be made of one or more parts. When the container is made of flat preform material, the side edges of the wall are usually connected by a connecting strip attached to the inner surface of the wall portion, as shown in FIG. The configuration of the container wall determines the cross section of the container. In one embodiment, the container is substantially cylindrical with an almost round or ellipsoidal cross section. In other embodiments, the container has a substantially square or rectangular cross section. In general, the cross-sectional shape of the container is not limited to anything.

The hollow bottom of the container is essentially formed by a large bottom valve, which is held in place by a locking strip on one side and at least one small valve on the other. The large bottom valve is located in the inner part of the container and is separated from the lower end of the container. A large bottom valve and a small valve are either attached to the inner surface of the wall, or are made in the form of a single blank with a wall, and their bending lines are placed against the inner surface of the container. Bending lines may extend along the lower edge of the container wall, but it is preferable to position them above the lower end of the container. In the latter case, the contours of the fixing strip and the small valve are cut beyond the lower edge of the container wall, as shown, for example, in FIGS. 3, 4 and 5.

The top end of the container of the present invention can be opened or closed. The upper and lower ends of the container preferably have the same cross-sectional shape and are preferably parallel to each other. The present invention also encompasses options in which the upper and lower ends of the container are non-parallel. For example, the side walls of the container may have different heights or one or more side walls have a variable height. The side walls of the container may be located relative to the horizontal surface at an angle other than 90 °, or the walls of the container may be located at different angles relative to the horizontal surface.

The present invention also encompasses options in which the cross-sectional shape of the container changes from the upper end to the lower end. For example, the lower end of the container may be square in shape, while the upper end may be substantially ellipsoidal. The reverse configuration is possible when the bottom end is round or ellipsoidal, and the top end of the container is square. It is also obvious to a skilled artisan that other various configurations are possible in which the container cross section will change.

In other embodiments, the container may be provided with windows through which its contents will be visible. These windows can be made in the form of holes in the wall of the container or in the form of transparent sections of the wall.

The present invention also encompasses the case when the container is equipped with means to facilitate its crushing. This option is preferred when disposing of the container, as it will take up less space in the garbage container when it is wrinkled. The means for facilitating the crushing of the container may, for example, be cuts or weakened lines such as perforations or grooves on the surface of the container.

All documents cited in the detailed description of the invention, in the corresponding part are incorporated by reference. The citation of any document should not be construed as an indication of the prior art in relation to the present invention.

For a qualified specialist it should be obvious that in addition to the described and illustrated above variants of the present invention, other changes and modifications can be made without departing from the spirit and possibilities of the invention. Without going beyond the scope of the present invention, all such changes and modifications are set forth in the accompanying claims.

Claims (3)

1. The container, including the upper and lower ends, between which there is a wall with a cross section in the form of a closed loop, forming the inner part of the container and having an inner and outer surface, the lower part extending from the middle of the distance between the upper and lower ends of the container towards the lower the end of the container, while the lower end of the container is closed by a hollow bottom made in the form of a large bottom valve located in the interior of the container, having approximately the size and shape across the cross section of the container held above the lower end on one side by a fixing strip attached to the large bottom valve along the connection line located above the lower end of the container, and from the opposite side held by a small valve attached to the large bottom valve approximately against the mentioned connection line, the fixing strip and the small valve are made in the form of wall parts protruding beyond the lower end of the container, bent towards the inner surface of the wall iyam limb and the fixing strip line limb and a small valve being spaced from the lower end toward the upper end of the container to the container. 2. The container according to claim 1, characterized in that the cross-sectional shape of the container varies along its length. 3. The container according to claim 1, characterized in that it includes at least two of these small valves.

Images