FI92175C - Rätvinkelförpackning - Google Patents

Abstract

The rectangular package (1) consists of flexible material, such as a composite plastic film. The one end face of the package has a folding closure (3) and its other end face is closed by a transverse seam (4), the transverse seam and the gusset surfaces (5, 6) formed being placed flatly onto said end face. <IMAGE>

Description

‘1 92175

The rectangular package. - Råtvinkelforpacking.

The invention comprises a rectangular package according to the preamble of claim 1, comprising at least one blank of flexible material, such as, for example, an artificial laminate film, in particular a powdery, granular, pasty or lumpy filler, with at least one longitudinal joint.

Until now, the flexible material has been used to make packages either in the shape of a purse or in deep-drawn containers with lids. Although both forms have fulfilled their function, their re-packaging into larger bundles than their placement on the sales shelves is also in the list of unused ones.

FR-A-1304368 discloses a rectangular package with a pleat closure according to the preamble of claim 1, which package, however, has the essential disadvantage that it can only be sealed in connection with a joint formed in this way when the package is either still empty or filled solid. with a pedaled object capable of receiving the pressure of the closure.

It is also known from this publication to close a rectangular package with transverse seams, which, although very suitable for the tightness of the joint, leaves much to be desired in terms of the strength of such a transverse seamed package and, above all, its appearance.

It is necessary to provide such a package with a transverse seam at the last sealing end of the package, because the pleated joint would not be tight.

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Such transverse seams are also known per se, but still do not make it possible to achieve the stability of the finished package in connection with the known embodiments.

It is therefore an object of the invention to provide a rectangular package as well as a method for orienting, filling and sealing this package so that the package can be made of a cheap material and without a surrounding carton. the end connection will be arranged concealed in the bottom.

According to the invention, this object is solved by a rectangular package according to the preamble of claim 1, which is characterized by the matters set forth in the characterizing part of claim 1.

Such a package retains its shape regardless of the flexible material, so it provides excellent protection for the filler. In addition, due to the preservation of this shape, it has a fairly good machine workability, which facilitates a lot of filling and closing steps compared to a mainly plain flat bag, it requires less space and considerably less material. Yet another advantage of the present invention is based on form stability; Large-bodied and, above all, sharp-angled fillers caused by flat bags used in any way must be packaged so that they either become unusable or the (filling) material has to be crushed. However, due to this increasing usable space, the filler can be retained in its original form.

In a preferred embodiment of the invention, the longitudinal seam of the package is formed as an overlap joint.

If, in addition to this, another longitudinal seam according to the second embodiment of the invention is designed in the region of the edge between the two side walls, then tSmS is almost invisible and in no way disturbing.

In a preferred further development of the invention, the flexible material is provided with a sealing agent on both sides, at least in the region of the longitudinal seam. Thus, the longitudinal seam can be manufactured in a particularly simple manner and with high strength and tightness.

It has further proved advantageous if the inside of the flexible material is at least partially provided with a surface to be sealed against the SM itself.

In that way, it is particularly simple to manufacture the transverse seam by sealing.

A very advantageous embodiment of the invention is characterized in that on the end side provided with the transverse seam 4 at least two opposite side walls 2 have flanges 7 formed by folding the strips 11 inside the side walls 2.

These strips substantially increase the durability of the package, since the wedge-shaped strips can be folded by means of the free space formed by the strips. The usability of the slats is further improved if the strips are sealed in the area of the slats on the side walls according to the invention.

A further preferred embodiment of the invention is that on the end side provided with a pleat closure, the outside of the package is provided with a piece of foil.

The seal from foil, ribbon, cardboard or paper provides additional sealing and further tightness to the back side.

The foil body can additionally function in irony ways; so it is possible to develop a price tag or a guarantee closure from a piece of foil as a pre-raerk.

In a preferred method for forming the package flexible material sealed longitudinal seam along the tube-like shape and then with a second in paatypuolella strip is folded against the inside of the mold and against the adhesive-in or sealed to each other, after which the package taytetaan an overhead via still open paatypuolen, and that this paatypuoli Taman after which it is closed by a transverse seam made as an adhesive or sealing seam, after which this seam, which is different from the package, is folded on the end side of the package and the wedge-shaped surfaces forming both sides are placed on the package surface.

This method is particularly simple, so that the mechanical operating cost is very low.

In another preferred embodiment, the tableau lost prior to the formation of a cross-directional strip intended to form the paatypuolen vahintaan two opposed part-height of the inwardly folded against the side walls and sealed 92 175

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preferably with this, after which these strips are folded outwards and against each other again to form a longitudinal seam.

In addition, according to the invention, it is possible that, after the formation of the transverse seam, at least two of the strips for forming the end side are folded from their partial height against the side wall of the inner seat at the beginning and are preferably fastened thereto. Although these methods are somewhat complicated due to the production of the strips, this gives an incomparably higher strength to the manufactured packaging.

The use of a package according to the invention is also particularly advantageous for the packaging of powdered, granulated, pasty or lumpy fillers, such as, for example, dry broth and the like.

The invention is illustrated in the drawings by means of two exemplary embodiments.

Figure 1 shows a schematic view of a rectangular package with a pleat closure provided on the upper end of the end.

Figure 2 shows a view from below of the lower package on behalf of the end, which is closed by transverse seals and nåyt-TSA tracks and transitions of the side walls pSStypuolen valisså.

Figure 3 shows a schematic view of an inner mold around which a blank is folded to form a package into a cavity-shaped jacket and closed along a longitudinal seam.

Figure 4 shows a schematic view of a second package generated phase of the lower and the set pastypuolen laskossulkimen 92 175 € sealed with conditioner.

Figure 5 shows a picture of an already filled package with a transverse seal seam folded on the upper end side.

Figure 6 shows pictures of the packaging, wherein the transversal ylemroån paåtypuolen is set uniform.

Fig. 1 shows a rectangular package marked with the number 1, which shows four side walls 4 and is provided with a pleat closure 3 on its upper end side. The lower end side has - as shown in Fig. 2 - a designed transverse seam 4 set flat on the end side. The two wedge-shaped strips 5 and 6 formed are likewise set flat on the end side. In addition to the locations of the side walls, the end side is set somewhat deeper, through which the flanges 7 are formed.

Figures 3 to 6 show the formation of the package 1 in four steps. In Figure 3, a blank of flexible packaging material is placed on the inner mold 8 and closed along a longitudinal seam 9. Strips 10 or 11 are arranged on the side walls 2, of which the lower 10 is folded in the inner mold 8 in Fig. 4 and pressed together by a sealable sealing device 12 and sealed in this way against each other. These strips 10 then form an upper pleat closure 3 in the finished package 1.

• In the manufacture of the pleat closure 3 of the TSma, the sealing device 12 is removed and the filling material of the inner mold 8 is filled into the package from the still open bottom press in a manner not described. Referring thereto, this side is closed with a transverse seam 4 (Fig. 5). This cross seam

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92175 Ί A is then - as shown in Fig. 6 - set flat on the end side. The wedge-shaped surfaces 5 and 6 then crack, which stand approximately perpendicularly apart and are finally placed equally flat on the side.

However, the finished and filled package now stands on top, which is not a disadvantage. Rather, there will now be a larger number of packages placed down the larger package. 1 ·

Claims (11)

92175 δ ί A rectangular package (1) formed from at least one blank of flexible plastic laminate film, in particular for a powdery, granular, pasty or lumpy filler, provided with at least one longitudinal seam (9) and four side walls (2), the first of which is provided with a pleat closure (3) pleated by four first-strip strips (10) formed in the side walls (2), which partially overlap each other, characterized in that a closure consisting of second strips (11) is arranged on the second end surface of the package, which is formed around the end face (2) in a continuous manner, the common circumferential edge being connected by a transverse seam (4), the corners extending over the package (1) being pleated on the other end face of the package in reinforcing triangles (5, 6), and (4) at least two are provided on the second end surface provided flanges (7) extending parallel to the side wall of the opposite side wall (2), formed by folding the second strips (11) inside the side walls (2), the flanges (7) extending so far from the second end surface that the reinforcing triangles 5 6) do not extend beyond them. A package according to claim 1, characterized in that the longitudinal seam (9) is formed as an overlap seam. A package according to claim 1 or 2, characterized in that the longitudinal seam (9) is arranged in an angular area between the two side walls (2). Packaging according to Claim 1, 2 or 3, characterized in that the flexible material is provided on both sides with a sealing medium at least in the region of the longitudinal seam (9). Packaging according to one of the preceding claims, characterized in that the inside of the flexible material is at least partially provided with a self-sealing surface. Packaging according to one of the preceding claims, characterized in that the second strips (11) are sealed to the side walls (2) in the region of the flanges (7). A package according to any one of the preceding claims, characterized in that the end side provided with a pleat closure (3) is provided with a foil piece outside the package. A method of forming a package according to any one of the preceding claims, characterized in that the resilient material is sealed along a longitudinal seam to form a tubular structure in which the strips formed in the first head are folded against an inner tool and glued or sealed to each other. from the open upward-facing end, and where the other end is then closed by a transverse seam formed as a glued or sealed seam, after which this seam protruding from the package is folded on the other side of the package and both laterally formed reinforcing triangles are placed on the package. 9. A method according to claim 8, characterized * in that, before a cross-directional formation of strips intended to form the paatypuolen at least two would-of located opposite the strip is folded '? January 2, 75 ΙΌ ί a partial height against the side walls inwardly and sealed, preferably with this, due to which these flaps are folded again against the backsheet and against each other to form a transverse seam. A method according to claim 8, characterized in that after forming the transverse seam, at least two of the strips for forming the end face are folded inwards from their partial height until they abut against the side wall and are preferably sealed with the side wall. Use of a package according to claims 1-7 for packaging a powdery, granular, pasty or lumpy filler, such as dry soup or the like. II 92175