CZ286951B6 - Package forming a bag, particularly for bulk goods - Google Patents

Abstract

The proposed package forming a bag, intended particularly for bulk goods is made of a thin foil with folds (3, 34, 49) folded perpendicularly to the package bottom fold that forms two walls being coupled with each other by means of at least one of their edges (4, 5), and a bottom (8), whereby opposite to the bottom (8) there is arranged an aperture (10) with edges (31, 32). The folds (3, 34, 49) forming a folded part (13) comprise in close proximity of a border (35) formed by folding the edge prior folding the folds (3, 34, 49) another temporary connection of the fold (3, 34, 49) walls (44, 45) being formed by connection of the fold (3, 34, 49) first wall (45) with the second fold (3, 34, 49) wall (44). The third fold (3, 34, 49) wall (43) is arranged freely with respect to the second fold (3, 34, 49) wall (44), for enabling expansion of the folds (3, 34, 49) by the action of traction produced perpendicularly in corners (9) of the bag and moving the first and the second fold (3, 34, 49) walls (44, 45) away from each other.

Description

Packaging forming a bag, in particular for bulk goods

Technical field

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a package comprising a bag, in particular bulk goods, made of a thin film with pleats stacked perpendicular to the bottom fold of the package, forming two walls joined together by at least one of its edges and .

BACKGROUND OF THE INVENTION

Patent FR-A-2595666 discloses a package having a convex body with an auxiliary folded thin film, the folds of which are joined at their ends. FR-A-2628719 claims several variants of joining said pleats. FR-A-2676037 discloses a package made of paper, one portion of which is folded and extensible, and the other non-folded portion of which is formed from the same film or another film attached to the end of said folded portion. This cover is designed for packing convex objects with relatively strong shape. Neither of these packages, on the other hand, allows the packaging of a set of objects that are inconsistent because they are not rigid in shape because the package cannot be spread around these objects. It is known to solve this problem by attaching a cardboard box to a folded paper sheet that is extensible. The goods are placed in a cardboard box, then the paper sheet is stretched, the cardboard box being used as a convex-shaped pedestal. This solution, which makes it possible to obtain a relatively aesthetic package, is expensive because it uses cardboard. In addition, it has the disadvantage of joining a rigid sheet, which has a complex shape, to a folded flexible film, thereby causing the risk of tearing the joint of the two types of material during handling.

It is an object of the present invention to provide a packaging, in particular a bulk goods packaging, which is formed only of thin films.

SUMMARY OF THE INVENTION

This object is achieved by a bag-forming container, in particular for loose goods, made of a thin film with pleats stacked perpendicular to the lower fold of the container, forming two walls joined together by at least one of its edges and a bottom, The edges according to the invention, wherein the folds forming the folded part comprise, in the vicinity of the fold formed by folding the edge before folding the folds, a further temporary connection of the fold walls formed by joining the first fold wall to the second fold wall, the third fold wall is arranged loosely with respect to the second fold wall to allow the folds to expand under the effect of a tension exerted perpendicularly at the corners of the bag and to move the first and second fold walls apart.

An advantage of the packaging according to the invention is in particular that the packaging not only protects the goods well and is easy to handle, but at the same time is easy to manufacture with low production costs.

According to a preferred embodiment, a plurality of parts adjoining the pleated part in the folding direction of the folds, the width of which is independent of the pleated part.

According to a further preferred embodiment, the additional part is formed from the same foil as the folded part and is closed at least at the first end.

According to another preferred embodiment, the additional part is closed at the first end and in the region of the transition to the folded part.

-1 CZ 286951 B6

The additional part may consist of folds which are connected at least at one end.

Warehouses can be joined along one or more lines.

According to another preferred embodiment, the edges of the aperture are offset from each other, wherein the height of the upper flange is less than the offset of the aperture edges to connect the edge to the inner wall of the package.

According to another advantageous embodiment, the temporary connection of the fold walls is also provided in other areas of the bag and in particular in the vicinity of the bottom.

BRIEF DESCRIPTION OF THE DRAWINGS.

The attached drawings show exemplary embodiments of a package according to the invention.

Giant. 1 shows an unstretched package according to the present invention.

Giant. 2 shows an unstretched package according to the present invention which is provided with an organ-shaped folded bottom.

Giant. 3 shows the expanded package of FIG. 1.

Giant. 4 shows the package of FIG. 2, expanded to an arrangement where the shape of the pleats allows the container to be formed.

Giant. 5 illustrates a variation of a package according to the invention which comprises a non-folded portion which is closed at its end.

Giant. 6 shows the expanded package shown in FIG. 5.

Giant. 7 is a variation of the package shown in FIG. 5, wherein its non-folded portion is connected at one end at its end and on its other side is connected to the folded portion to form a bag.

Giant. 8 shows a variation of the package of FIG. 5, the folded portion of which is replaced by another folded portion, the folds of which are blocked so that they cannot be stretched.

Giant. 9 shows the package of FIG. 8, which is closed by stretching its folded portion.

Giant. 10 shows a variation of the package of FIG. 8, the folds of which are not blocked and can thus be stretched before closing the package by expanding the folded portion.

Giant. 11 shows the package shown in FIG. 10 when fully expanded.

Giant. 12 shows the package of FIG. 6 after it has been inverted and opened.

Giant. 13 shows a packaging according to the invention with offset edges.

Giant. 14 shows a film whose edge comprises a rim formed prior to the film being folded.

Giant. 15 shows a folded film showing the fold-joining areas.

Giant. 16 shows a bag according to the invention, the folds of which have been expanded to expand the opening.

-2 GB 286951 B6

Giant. 17 illustrates a sachet of the present invention comprising a sandwich.

Giant. 18 shows a bag comprising the sandwich of FIG. 17 closed by a flap.

Giant. 19 shows the bag of FIG. 17 whose folds have been expanded to expand its opening.

Giant. 20 shows a cross-sectional view of the folded region of FIG. 15 at a point below the hem.

DETAILED DESCRIPTION OF THE INVENTION

In a first embodiment of the invention, the folded package is made of a thin film according to one of the patents FR-A-2595666 and FR-A-2676037, the pleats have a substantially planar and rectangular shape, the package being folded / fig. 1 / in such a way that the resulting fold 1 or folds 1 / fig. 2) are perpendicular to the folds 3 / fig. 1 / and thus form a package. The side edges 4 and 5 are joined together by means of joining the thin film to form a bag. It is also possible to form the bottom of the bag / fig. 2) by suitably stacking the organ-shaped bottom 8 in such a way that more space is created at the bottom 8 of the bag. This bag / fig. 1 or 2) can be advantageously used in fast food stores as a substitute for traditional fries cones. The bag is made, for example, of a complex sheet of paper and polyethylene in a thin layer, whereby the folds 3 at their ends 7 and the side edges 4 and 5 are joined by welding. The described pouch may be filled with chips similar to a cardboard cone. Like the cone, this bag serves as a metering device for the amount of chips supplied. When using the bag, the workers' hands are protected by several layers of paper resulting from the initial folding forming the folds 3. The folding may be designed to be selected here by selecting the ratio between the length of the shorter side of the fold 3 and the length of its larger side. at least three layers of foil. At this ratio greater than 2, the area comprising three layers of paper alternates with areas having only one layer, while at this ratio less than 2 there are at least three layers of paper. After filling the bag / fig. 1 / by a plurality of chips, it is possible to open the bottom 8 by pulling on the corners 9 and thus to stretch the folds formed 3. The volume of the bag is thus increased / fig. 3) and the chips then fall into a cavity which protects them against cooling, while the original opening 10, which serves as ventilation and which tends to close partially like the lips, is retained. The enlarged bag thus formed can be placed on a plane and held in a stable position, which is a function of the height 29 of the bag and the degree of its extension as a function of the shape of the folds 3 / fig. 3 and 4 /. It is possible to achieve an effect which makes it possible to limit the losses of the chips in the event of the overturning of the expanded bag, this being achieved, for example, at a large folding aspect ratio 3, for example greater than 2. 3 / resembles a part of a circular ring consisting of two concentric circular arcs bounded by radii formed by the welds of the lateral edges 4 and 5 which form an angle 11 with each other of less than 180 °. When the bag is inverted, the chips are preferably directed towards the opening, especially if the angle is small. When the aspect ratio of the folds 3 is small, for example around 1.5 / fig. 4 / and the ratio of width 30 to height 29 is, for example, within the same range, the angle 11 between the radii formed by the side edges 4 and 5 is greater than 180 °. The bag formed has a type of corner in which, after the bag has been inverted, the chips may become trapped so that they cannot fall through the opening 10, which is then located above the goods. At the same time, none of this prevents the consumer from inserting his fingers through the opening 10 in the expanded bag / fig. 3 and 4 /, took out the chips and then consumed them. Correspondingly, the organ-bottom bag / FIG. 2 and 4 (i) a bag with a bottom without these organs (fig. 1 and 3). The previously described effects, as well as the effects described below, apply equally to both types of these sachet days and therefore only one of the two cases will be described subsequently.

Another possibility of creating a container for goods is to start from a folded package of the type described in patent application FR-A-26767037, in which the folded portion 13 is set by an additional

The portion 14, which in this embodiment is unfolded and which makes it possible to wrap, for example, a sandwich and which is made in half-crepe folded in half. This wrapper is stacked with the possibility of forming an organ as was possible with the previous wrapper, with only the first end 15 of the additional portion 14 being joined. The goods are placed in the add-on portion 14 so as to optimally fill it to form a coherent whole which can then be closed (FIG. 1). 6 / stretching of the folded portion 13. The same result can be achieved by using an additional portion 14 with a width 16 equal to or different from the width 17 of the folded portion 13, wherein the additional portion 14 is attached to and connected to the folded portion 13 as known from FR -A-2676037. The assembly composed as above and the first end 15 of the additional portion 14 are then joined together. One of the advantages of this type of packaging is that the additional portion 14 can be lifted as a cover and thus exposes the bulk goods contained in the expanded folded portion 13, which has the shape of a cup / FIG. 12 /. In one variation, the additional portion 14 / FIG. 7 / at the edge 19 and at the transition 20 joined to form a bag that can be overlapped by stretching the folded portion 13. The additional portion 14 need not be merely unfolded as described above. In some embodiments of the invention, the additional portion 14 may be provided with folds 22 / FIG. 8), the pleats of which are joined at their ends and either have the same pitch as the pleats of the folded part 13 or have a different pitch. The folds 22 thus formed can serve as thermal insulation in the unstretched state. If necessary, these folds can be joined together, for example along one or more lines 25 perpendicular to the direction of the folds 22, so as to prevent them from being stretched, which insulates the package in the manner described above. It is also possible to adjust the expansion of the folds 22 / FIG. 10) so as to form a receptacle 27 which, after being filled with goods and expanded, can be covered by stretching. 11 / folded parts 13 such that the receptacle opening is closed. As already mentioned, the described embodiments of the invention also relate to a package comprising an organ-shaped bottom 8 / FIG. 2 /. Referring to the folded portion 13 / FIG. 5), as well as the additional parts 14, the accompanying figures are given by way of example only and the actual solution is not limited thereto. Similarly, the additional portions 14 may be provided with folded folds 22 / FIG. 8 / or with unlocked folds / fig. 10 / in all the embodiments described.

To better open the previously described folded package, it is sufficient to offset the edges 31 and 32 / fig. The inner wall 33 of the bag corresponding to the longer edge 32 then serves as a guide for separating the edge 31 and thereby opening the bag. Under these conditions, when the pleats 34 are joined by a flange 35, for example located on a sheet of paper covered with polyethylene on the face, the offset 36 between the two edges 31 and 32 is preferably selected greater than the height 37 of the top flange 35. forming the distal rear side, when forming the weld 40, the side edges 4 and 5 of the bag come into contact with the polyethylene covered inner wall 33 and therefore can be joined to another surface of the inner wall 33. The offset 36 between the two edges 31 and 32 can be intentionally increased that one of the two walls / fig. 17 / may form a flap 41 that allows the bag to be closed in a manner similar to the envelope (Fig. 18). It has been found that in the bag thus formed, it is due to the presence of folds that at least one section 42 / FIG. 20 / of the bag surface comprises at least three layers of paper forming the walls 43, 44, 45 of the folds 34 and provides more effective insulation against heat loss in such areas.

If the folding capacity of the bag is desired / FIG. 16) to allow it to be widely opened without the risk of tearing the folded film by an initial break that emerges from the edge of the film is sufficient before folding (FIG. 15 / material 47 / fig. 14 / to form an edge flange 35. This edge flange 35, which may be attached by any known means, depending on the material used, prevents the edge 48 from being loaded by direct tensile forces. The pleats 49 are attached to each other / FIG. 15), preferably only on one side of the film in such a way that, for example, the first and second walls 44 and 45 (FIG. 20) held together by welding the outer coating when it is added, for example, by adhesive bonding or coating, or by applying adhesive directly to the film surface, while the third wall 43 and the second wall 44 do not hold together. If, for example, polyethylene coated paper is used, the edge flange 35 / FIG. 14) is made by placing the plastics material inside the fold and the skirt 35 is welded in place 50. Specifically, the skirt 35 is, for example, 5-10 mm wide for a wrapper used for about 150 g of chips, then folding is made. 15) and the pleats 34, 49 are joined in a region 51 adjacent to the peripheral

The edge 35 of the hem 35 is directly heated by the paper such that surfaces 52 and 53 / FIG. 20) The polyethylene-coated first and second walls 44 and 45 which are in contact with each other are fastened together by welding. In the folded area 54 / FIG. 15), corresponding to the edge flange 35 having only paper walls, there are no interconnections of the pleats 34, 49 and this folded region 54 is not stressed in any way when the pleats 34, 49 are stretched in a direction 55 perpendicular to the pleats 34 49. On the other hand, in the region 51 of the interlock connection, the polyethylene coating is common to both surfaces 52 and 53 / FIG. 20), by applying a tension that is perpendicular to the pleats 34, 49 separated from one of the walls. This tear is facilitated by the fact that in the folding technique used, the weld causes peeling and not shear. The folds 34, 49 / FIG. 15 / in the same manner as just described in other regions of the bag and in particular near the lower end 56 / FIG. 16 /. If desired, the bag mouth 57 may be expanded to have the shape of the basket without expanding its bottom, or conversely, only the lower end 56 may be expanded in such a way that the opening is reclosed to best maintain the temperature of the bag contents.

The type of bag of Fig. 17 can be used very well for storing sandwiches of various shapes. The closure of the bag of Fig. 18 can be accomplished by means of a flap 41 that is formed by the long side of the bag and secured, for example, by a sticker 58 or other suitable element available on the market. In order to consume the sandwich 59 / FIG. 17 (contained in this bag, it is sufficient to detach the edges 60 (see, Fig. 19) of the bag, to increase their size and to eject a portion of the sandwich 59 without having to remove it from the package. This bag is particularly suitable for long sandwiches.

Claims (8)

PATENT CLAIMS A container forming a bag, in particular for bulk goods, made of a thin film with folds (3, 34, 49) stacked perpendicular to the lower fold of the container, forming two walls joined together by at least one of their edges (4, 5) and the bottom (8), wherein an opening (10) with edges (31, 32) is arranged against the bottom (8), characterized in that the folds (3, 34, 49) forming the folded portion (13) include proximate the flange (13). 35), formed by folding the edge before stacking the folds (3, 34, 49), further temporally joining the walls (44, 45) of the folds (3, 34, 49) formed by joining the first fold wall (45, 3, 34, 49) with a second fold wall (44) of the fold (3, 34, 49), the third fold wall (43) of the fold (3, 34, 49) being arranged freely relative to the second fold wall (44) of the fold (3, 34, 49) to allow the folds to expand (3, 34, 49) by applying a tension exerted perpendicularly at the corners (9) of the bag and moving away the first and second walls (44, 45) of the fold (3, 34, 49). Packaging according to claim 1, characterized in that the folded portion (13) is joined in the direction of expansion of the folds (3, 34, 49) by an additional portion (14) whose width (16) is independent of the width (17) of the folded portion (13). Packaging according to claim 2, characterized in that the additional part (14) is formed from the same foil as the folded part (13) and is closed at least at the first end (15). Packaging according to claims 2, 3, characterized in that the additional part (14) is closed at the first end (15) and in the region of the transition (20) into the folded part (13). Packaging according to claims 2, 3 and 4, characterized in that the additional part (14) is formed by folds (22) which are joined at least at one end. -5GB 286951 B6 Packaging according to claim 5, characterized in that the folds (22) are joined along one or more lines (25). Packaging according to claim 1, characterized in that the edges (31, 32) of the opening (10) are spaced apart from one another, the height (37) of the upper rim (35) being smaller than the offset (36) of the edges (31). 32) an opening (10) for connecting the edge (31) to the inner wall (33) of the package. Packaging according to claim 1, characterized in that the temporary connection of the walls (44, 45) of the folds (3, 34, 49) is also provided in other regions of the bag and in particular in the vicinity of the bottom (8).