WO2006111292A1

WO2006111292A1 - Film package, particularly a film bag

Info

Publication number: WO2006111292A1
Application number: PCT/EP2006/003278
Authority: WO
Inventors: Andreas Michalsky
Original assignee: Huhtamaki Ronsberg, Zweigniederlassung Der Huhtamaki Deutschland Gmbh & Co. Kg
Priority date: 2005-04-20
Filing date: 2006-04-10
Publication date: 2006-10-26
Also published as: DE102005018343A1

Abstract

The invention relates to a film package, particularly a film bag (10), comprising a cap closure (13, 20), which is placed at the top and which has a spout tube (13), and optionally comprising a stand-up bottom. The spout tube (13) has a funnel-shaped or conical seal section (19) to which the packing film can be sealed.

Description

Huhtamaki Ronsberg, branch of ^• ^ '^ ^• P ^{ri •} ^"• ^? Huhtamaki Germany GmbH & Co. KG M / VRG-082- RC

Heinrich-Nicolaus-Str. 6 MB / PO / fr

87671 Ronsberg / Allgäu Germany

"Film packaging, in particular foil bags"

Description

The present invention relates to a foil packaging, in particular foil pouches, having a cap closure arranged on the top side, comprising a pouring tube, and optionally a standing floor.

Such packaging, in particular tubular bag of this type are well known. They are mainly used to absorb liquid or flowable products such as liquid soap or hair shampoo or the like. They are comfortable and practical to handle. After opening the cap closure, the products can be squeezed out of the packaging by simply pressing on the packaging. By way of example, in this connection, reference is made to tubular film bags according to DE 202 12 251 U1 and "EP 1 362 797 A2, each of which is based on the Applicant.

Usually, the spout tube comprises a relatively solid connecting element having a triangular cross section, i. a cross section formed by two symmetrically oppositely directed circular arcs. The circular arc walls serve to seal the packaging film. The circular arc walls extend parallel to the longitudinal axis of the Ausgußröhrchens.

The problem with this latter design is on the one hand compared to the actual spout relatively large volume connection element with the result that the cost of materials for spout and connection element is relatively high. In addition, the circular arc walls extending approximately parallel to the longitudinal axis of the pouring tube impede lateral bulging of the packaging walls. Of the Transition between the circular arc walls of the connecting element and the seal-free packaging wall is relatively abrupt in the prior art, with the result that in this transition region high voltages act on the packing wall. When using composite films with aluminum barrier layers, this can lead to fractures thereof. Under heavy load, especially dynamic load during transport, this can even lead to leaks in the sealing area between the packaging film and connecting element.

The present invention is therefore an object of the invention to provide a film packaging, in particular a foil bag, which is characterized by a substantially wrinkle-free, bulbous transition between the bag body and cap closure on the one hand and a material-saving closure construction on the other.

This object is achieved by the characterizing features of claim 1, wherein advantageous developments and design details are described in the subclaims.

An essential point of the present invention is therefore that the Ausgußröhr- chen has a funnel-shaped or cone-shaped portion to which the packaging film is ansiegelbar. Through the funnel-shaped or cone-shaped sealing portion instead of the relatively solid connection element, a gentle transition between spout tube on the one hand and bag body on the other hand is achieved with less material. The bag body remains practically up to the spout even in the area bulbous and thus wrinkle-free around the spout. Accordingly tension-free is the bag material with the result that even with high dynamic load no risk of breakage, especially not the risk of breakage of a metallic barrier layer.

The funnel-shaped or cone-shaped sealing section is relatively thin-walled. The wall thickness of the cone section is about 30 to 50% less than the wall thickness of the spout. Nevertheless, sufficient stability is ensured, in particular if the cone-shaped sealing portion is circular or elliptical in cross-section.

In a preferred embodiment, the packaging is closed on the head side by a top seal, with the funnel-shaped or cone-shaped sealing section of the pouring tube being sealed in between. The sealed joint is either a heat-seal or ultrasonic seal compound. In a further preferred embodiment is between Ausgußrölitchen and

S hegekb cut an annular disc-like perimeter flange as a sportsport holder and / or

Stop for sealing tools, in particular ultrasonic sealing tools formed.

Preferably, two fins are formed on the cone-shaped sealing portion diametrically to the longitudinal axis of the same, which are sealed in the finished packaging within the top seam, ie extending in the longitudinal direction of the top seam. The two fins are preferably thin-walled. They have a wall thickness which may even be less than the wall thickness of the film material for the bag body. For a particularly tight connection of the top seam is achieved at the cone-shaped sealing portion. Also, the strength of the bag is increased in this area, it must be remembered that it is always critical areas for Üsbergs between bag film and sealed pouring devices in terms of stability and tightness.

The packaging may be formed tubular and at least in the head area diametrically to the packaging longitudinal axis in each case with the formation of a W-fold (gusset) fed or wound inward. The mentioned W-fold (gusset) is then fixed in the region of the top seam, preferably by mutual sealing.

Hereinafter, a Ausfühiungsform a package according to the invention will be explained with reference to the accompanying drawings, which shows in:

1 shows the head region of a packaging (foil bag) designed according to the invention in a perspective view;

FIG. 2 shows the head region of the packaging according to FIG. 1 in a narrow-side view corresponding to arrow II in FIG. 1; FIG.

Fig. 3 is a view corresponding to FIG. 2 showing the action of

Ultrasonic sealing tools; and

Fig. 4, the head portion of a conventional foil bag in perspective

View corresponding to FIG. 1.

The head region of a conventionally formed film tube bag 10 shown in FIG. 4 is characterized by a top seal seam 11 on the one hand and two not shown in FIG. 4. was formed diametrically to Beu.tellangsacb.se 12 trained W-folds or -Zwickel. The bottom of the tubular film bag 10, which is likewise not shown here, may be formed as a standing floor. Just as well, however, a bottom seam according to the head seam 11 is conceivable. In this regard, reference is made to previously known embodiments of a floor, for example as described in EP 1 362 797 A2.

On the plug side a pouring tube 13 is sealed, which can be closed with a screw cap, not shown. This Ausgußröhrchen has a relatively massive two-cornered connection element 14, whose cross section is formed by two symmetrically oppositely directed circular arcs. On the circular arc walls 15, which extend parallel to the bag longitudinal axis 12, the bag film is sealed, while continuing the top seam 11. Due to the orientation of the circular arc heat 15 parallel ZXLT bag longitudinal axis 12 is formed when filled bag immediately following the circular arc walls 15 each have a relative large dent 16, which gradually merges into a belly 17 in the direction away from the spout. Also folds 18 are formed in the region between the dent 16 and the top seam 11, under which the strength or stability of the bag material suffers, especially under dynamic load during transport.

In order to avoid these problems, it is provided in the imple mentation form of Figures 1 and 2, that the pouring tube 13 has a funnel-shaped or cone-shaped sealing portion 19, to which the packaging film is ansiegelbar. Again, the packaging is closed at the top by a top seal seam 11, wherein between this top seal seam 11 of the cone-shaped sealing portion 19 is sealed. The sealing of the cone-shaped sealing portion 19 thus takes place in a similar manner as the sealing of the connecting element 14 according to FIG. 4. The pouring tube is still a closure cap, in particular screw 20 assigned. This and the pouring tube 13 thus define a cap closure. The cone-shaped sealing portion 19 is circular in cross-section. However, it may as well be oval or eüipsenfötmig designed. Alternatively, the cross section may also be formed in a triangular manner. Between the Ausgußröhrchen 13 and the cone-shaped sealing portion 19 is an annular disc-like peripheral flange 21 is arranged. This serves as a transport holder and / or stop for sealing tools, in particular ultrasonic sealing jaws 22, 23 according to FIG. 3, which are movable in the direction of the double arrows 24 below the peripheral flange 21 to the cone-shaped sealing section 19 and can be moved away therefrom, and for the purpose of sealing the packaging film to the cone-shaped sealing portion 19 below the peripheral flange 21. Between sealing jaws 22, 23 and Circumference flange 21 may still be provided a Wärmeis tion, if it is in the sealing jaws 22, 23 to heat seal jaws. Thus, both serving as a transport holder Umfangsfiansch 21 and the Ausgußr tube 13 is protected from excessive heat.

The cone-shaped sealing portion 19 also has the advantage that when sealing between the jaws 22, 23 is a kind of self-centering the spout arrangement. In this respect, the cone-shaped sealing portion 19 also represents an advantageous solution on the production side.

As already mentioned, the wall thickness of the cone-shaped sealing portion 19 is significantly less than the wall thickness of the Ausgußröhrchens 13, in particular by about 30 to 50% less. Despite this lower wall thickness, a sufficiently high stability is achieved in the connection area between the bag body and spout. Compared with the prior art according to FIG. 4, considerably less material is used for the pouring device in the described embodiment.

To increase the stability of the seal between the bag film and the pouring device, in particular cone-shaped sealing section 19, the latter has two fins 25, 26 which are formed diametrically to the longitudinal axis 12. These are, as Fig. 1 as well as Fig. 2 reveals, sealed in the finished package within the top seam 11.

The packaging is preferably tubular and, at least in the region of the head, is drawn or wound inward diametrically to the longitudinal axis 12 of the packaging, with the formation of a W-fold (gusset 27). The W-fold or gusset 27 is fixed in the region of the top seam 11 by mutual sealing. The latter construction is indicated in FIG. 1.

Furthermore, Fig. 1 shows that the bag body is formed immediately after the cone-shaped sealing portion 19 bulging outward. There are no inward dents. Also, no wrinkles corresponding to the wrinkles 18 are to be feared. This gives a high filling volume without overstressing the bag film. The risk of foil breakage or fracture of at least one metallic barrier layer is considerably lower than in the prior art. Due to the smooth transition between bag film and spout device there is also no risk of leaks or material fatigue. Due to the bulbous shape of the bag up to the top seal, the bag can be emptied completely and without residue after aseptic treatment.

The inventively designed container, in particular tubular bag, so characterized by

- higher stability

- more volume

- wrinkle-free bag body

- Beauty - lower risk of breakage and less risk of leaks.

All disclosed in the application documents features are claimed as essential to the invention, as far as they are new individually or in combination over the prior art.

S e c tio n s

10 foil tube bag

11 top seal 12 bag longitudinal axis

13 spouts

14 Close element

15 circular arc wall

16 dent 17 belly

18 folds

19 cone-shaped seal section

20 screw cap,

21 peripheral flange 22 sealing jaw

23 sealing jaw

24 double-headed arrow

25 fin

26 fin 27 gusset (W-fold)

Claims

"Film packaging, in particular film bag" claims

1. film packaging, in particular film bag (10) arranged with a head side, a spout (13) comprehensive cap closure (13, 20), and optionally a standing floor, characterized in that the Ausgußröhrchen (13) has a funnel-shaped or cone-shaped sealing portion (19 ), to which the packaging film is attachable.

2. Packaging according to claim 1, characterized in that it is sealed at the top by a head seam (11), wherein between this head seal seam (11) of the cone-shaped sealing portion (19) is sealed.

3. Packaging according to claim 1 or 2, characterized in that the conical sealing portion (19) is circular, elliptical or triangular in cross section.

4. Packaging according to one of claims 1 to 3, characterized in that between Ausgußröhrchen (13) and ko from shaped sealing portion (19) an annular disc-like peripheral flange (21) as a transport bracket and / or stop for sealing tools (22, 23) is formed.

5. Packaging according to one of claims 1 to 4, characterized in that the wall thickness of the cone-shaped sealing portion (19) is less than the wall thickness of the Ausgußröhrchens (13), in particular by about 30 to 50% less.

6. Packaging according to one of claims 1 to 5, characterized in that the conical sealing portion (19) diametrically to the longitudinal axis (12) of the same two fins (25, 26) are formed, which is sealed in the finished packaging within the top seam (11) are.

7. Packaging according to one of claims 1 to 6, characterized in that it is tubular and at least in the head area diametrically to the package longitudinal axis (12) in each case with the formation of a W-fold (gusset 27) fed or wound inward.

8. Packaging according to claim 7, characterized in that the W-fold (gusset 27) in the region of the top seam (11) is fixed by mutual sealing.