ES2292679T3 - FLEXIBLE CONTAINER, EASY TO OPEN AND THAT CAN CLOSE AGAIN. - Google Patents

Abstract

Flexible container of the type derived from a tubular shaped body (12) formed by a film with a longitudinal thermal weld (14) and by transverse thermal welds (13) of the two ends, the container comprising at least one corner area ( 16) defined between a transverse edge (19) and a side (23) and having, at its transverse edge (19), in the area of said thermal welding (13), a tearing notch (20) which is inclined with respect to to the transverse edge (19) and which is oriented from said transverse edge (19) towards said side (23) in order to produce, by stretching, the tearing of a part (18) of said film comprising a part (13a) of the transverse thermal welding (13) and a part (15a) of the tubular wall (15), characterized in that said tearing releases a corresponding wall wing (15b) disposed in said corner area (16) and provided with less partially inside a low adhesive adhesive ncia (21) protected by a removable film (24), said wing (15b) being able to bend towards the remaining part of the container (10) for the purpose of temporarily closing it by adhesion, said adhesive (21) being located protected by said removable film ( 24) so that, on the wall of said corner area (16) which is provided inside said adhesive (21), the tearing of said part (18) extends in a first direction parallel to an edge of the adhesive which is adjacent and parallel to said transverse edge (19), and then extends in a second direction parallel to a second edge of the adhesive that is adjacent and parallel to said side (23).

Description

Flexible container, easy to open and that It can close again.

The present invention relates to a container     flexible bag type, made of material in the form of movie.

The container is especially suitable, although not exclusively, to store food products such as candies, chocolates, confectionery, etc.

In fact, it can also be used to save other types of products, including non-food products.

As is known, flexible containers of many food products, individually packaged (such as candies and chocolates) or unpackaged (certain type of confectionery, although also certain type of candies and chocolates), they are made of film-shaped material, for example, polypropylene, and derived from a properly shaped tubular element and with which are obtained a front face and sides by means of folds, formed by longitudinal thermal welding and thermal transverse welds at both ends.

Due to their shape, these containers are known commonly as "bag" containers.

The current packaging is carried out by gathering and thermally welding two wings of the film to form a continuous tubular element that, having been filled with the product to preserve, heat welded transversely and cut properly to separate the front thermal weld from a subsequent thermal welding vessel of the following container.

Such flexible containers must be produced from so that the user can open them, and this operation must be the as simple and effective as possible.

In fact, it is sometimes necessary to force the wrapping, since it is impossible to open it with just one operation.

In addition, it is desirable that the container does not open totally, but only partially, so that, for example, the user can extract only part of the product and the container can continue to fulfill its function of packaging.

In this regard, there is a need for container that can be closed again to avoid losing its content.

EP 0317334 discloses a container of flexible material that can be closed again, which comprises a superior transverse seal, a seal transverse bottom and a back seal that extends longitudinally from the upper transverse seal to the lower cross seal. The bowl too it has an internal element that extends adjacent to the inner surface of the outer wall thereof, and an opening which extends substantially inclined with respect to the closure waterproof back.

GB 2193484 describes a bag of safety of plastic material that has front panels and rear joined together and an opening in the front panel below of an intermediate membrane attached to the inside of the bag along from the sides of it. Arranged between the intermediate membrane and the opening is a pressure sensitive adhesive that is protected by a removable strip and extending over and over under the opening in order to be able to close the opening at Remove the strip after filling the bag. In the event that it try to open the bag in the sealed opening area, the membrane will leave evidence of manipulation.

US 4762230 discloses a wrapping composed of two flexible wall elements that form  a tightly sealed bag for an item to be packaged. The bag has a material area in a certain part adherent, on the inner surface of one of the elements of wall. In the event that the sealed wrapper opens and desires close again, a part of the wall element on which it is located the opening should be removed and then the second wall element that carries the adherent material must be bent until the adherent substance comes into contact with the surface outside of the remaining part of the first wall element.

Document DE 20006820 U, on which the preamble of claim 1, discloses a very container similar to the object of the present invention.

The objective of the present invention is to give know a flexible bag-type container to keep products, which is obtained from a film by thermal welds, which can be easily opened and returned to Close to store unused products.

An objective of the present invention is to give know a flexible container, easy to open and that can close again, which can be manufactured using systems automated

Another objective of the present invention is to give know a flexible container, easy to open and that can close again, which can be manufactured with costs of Low production

This and other objectives that will be clearer henceforth they are obtained by a flexible container according to the claim 1.

Other features and advantages of the invention they will be better understood from the following detailed description of two embodiments thereof, shown only by way of non-limiting example in the accompanying drawings, in the that:

Figure 1 is a perspective view of a container according to the invention in closed configuration;

Figure 2 is a perspective view of the container of figure 1 during opening;

Figure 3 is a perspective view of the upper part of the container of figure 1 open;

Figure 4 is a perspective view of the upper part of the container of figure 1 open and closing again;

Figure 5 is a perspective view of the upper part of the container of Figure 1 closed again;

Figure 6 is a sectional view of the container in the configuration of figure 5;

Figure 7 is a sectional view of the container in the configuration of figure 1.

Referring to the figures, through the reference number 10 is generally designated a container flexible, easy to open and can be closed again, and obtained from a film that forms a tubular body 12 in the interior of which products 11 are arranged; some welds thermal transverse 13 are arranged at the two ends of said tubular body.

The film, which is normally rolled in rolls, unwinds and bends to form a tubular body continuous by longitudinal thermal welding 14; to then the transverse thermal welds 13 and about cuts form body 12, which has two facing walls fifteen.

Longitudinal thermal welding 14 is disposed substantially in the central longitudinal zone, in this case of a wall 15, to form an external fin.

A corner zone 16 may have a line of torn 17 shaped to tear, by stretching, a part 18 of said film comprising a part 13a of the weld transverse thermal 13 and a part 15a of the tubular wall 15, releasing a corresponding wall wing 15b.

In this way, line 17 is arranged in diagonal on a wall 15, and follow the corresponding side 23 and the inner area of the wall 15 that is adjacent to the thermal weld 13.

With this objective, on the transverse edge 19 of container 10, at the beginning of line 17 in the area of the transverse thermal welding 13, a tearing notch is provided twenty.

On the opposite side, in an area 22 that is adjacent to side 23, the two walls 15 are welded thermally locally, in order to constitute an element retention to interrupt the fracture formed by the line 17.

The wall wing 15b is provided with at least partially inside, of a low adhesion adhesive 21 protected by a removable film 24.

The expression "low adhesion adhesive" It is used to designate an adhesive that allows joining and separating two surfaces several times before losing its adhesive effect.

The wing 15b can be folded conveniently towards the remaining part of the container 10, in order to close it temporarily by adhesion, as shown in the figure 5.

At this point, it should be noted that, according to the present invention, although with the presence of the tear line 17 you get a good result, the presence of the notch 20 only, with a correct positioning of the adhesive 21 with the film 24, allows to continue obtaining a good result, since the torn "extends naturally" in the direction of the notch, and along the edges of the adhesive.

In practice, it has been proven that the flexible container according to the invention allows obtaining the desired purposes and objectives.

Specifically, the flexible container according to the invention ensures easy opening to access the products and the possibility of closing it again to store in your Inner products not consumed.

Opening and closing can be done up to that the products contained have been consumed in their entirety.

It is also evident that the container flexible according to the invention can be produced without using any specific manufacturing procedure with respect to the already known.

Another advantage is that the container flexible according to the invention has a constructive structure extremely simple

It is also evident that the container flexible according to the invention can be produced by a automated procedure

Another advantage is the fact that the container according to the invention it can be produced with production costs and Very low manufacturing.

The invention conceived in this way is susceptible of numerous modifications and variations, all of them within the scope of the appended claims.

All details can also be replaced by other technically equivalent elements.

In practice, the materials used, provided they are compatible with the corresponding use, as well as the dimensions, they can be any according to the needs

In cases where the technical characteristics mentioned in any claim are followed by signs of reference, said reference signs have been included with the mere purpose of increasing the clarity of the claims and, of accordingly, said reference signs have no limiting effect on the interpretation of each element identified by way of example through them.

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References cited in the description

This list of references cited by the Applicant is only for the convenience of the reader. Not a part of the European Patent document. Although it has had a great careful to collect the references, the presence cannot be excluded of errors or omissions and therefore the EPO declines any Responsibility in this regard.

Patent documents cited in the description

EP 0317334 A [0011]

GB 2193484 A [0012]

US 4762230 A [0013]

DE 20006820 U [0013]

Claims (5)

1. Flexible container of the type derived from a tubular shaped body (12) formed by a film with a longitudinal thermal weld (14) and by transverse thermal welds (13) of the two ends, the container comprising at least one area of corner (16) defined between a transverse edge (19) and a side (23) and having, at its transverse edge (19), in the area of said thermal welding (13), a tearing notch (20) that is inclined with respect to the transverse edge (19) and which is oriented from said transverse edge (19) towards said side (23) in order to produce, by stretching, the tearing of a part (18) of said film comprising a part (13a ) of the transverse thermal welding (13) and a part (15a) of the tubular wall (15), characterized in that said tearing releases a corresponding wall wing (15b) disposed in said corner zone (16) and provided at least partially inside with a low adh adhesive interference (21) protected by a removable film (24), said wing (15b) being able to bend towards the remaining part of the container (10) in order to temporarily close it by adhesion, said adhesive (21) being located protected by said removable film ( 24) so that, on the wall of said corner area (16) which is provided inside said adhesive (21), the tearing of said part (18) extends in a first direction parallel to an edge of the adhesive which is adjacent and parallel to said transverse edge (19), and then extends in a second direction parallel to a second edge of the adhesive that is adjacent and parallel to said side (23). 2. A container according to claim 1, characterized in that, on the wall of said corner area (16) which is provided inside said adhesive (21), the tearing of said part (18) extends along said edges of the adhesive (21) and, on the opposite wall of said corner area (16), the tearing of said part (18) extends along the inclined direction defined by said tearing notch ( twenty). 3. A container according to claim 1, characterized in that it comprises a tear line (17) that starts from said tear notch (20) and extends through a part (13a) of a transverse thermal weld (13) and by a part of the tubular wall (15). 4. A container according to claim 3, characterized in that said tearing line (17) is arranged diagonally in a wall (15) and follows the corresponding side (23) and the inner area of the wall (15) which is adjacent to the corresponding transverse thermal weld (13). 5. A container according to claim 4, characterized in that, in an area (22) that is adjacent to one side, on the opposite side with respect to said tearing notch (20), the two walls (15) of said container (10) are thermally welded locally to form a retaining element to interrupt the tearing formed by said line (17).