WO2008062042A1

WO2008062042A1 - Fluid container

Info

Publication number: WO2008062042A1
Application number: PCT/EP2007/062697
Authority: WO
Inventors: Rudolf Holzleitner
Original assignee: Austria Wirtschaftsservice Technologie & Innovation / Tecma
Priority date: 2006-11-24
Filing date: 2007-11-22
Publication date: 2008-05-29
Also published as: AT504127B1; AT504127A4; EP2091829A1

Abstract

The invention relates to a fluid container having at least one deep-drawn part (1) and at least one further part (2), wherein the two parts (1, 2) are connected in a fluid-tight manner to one another via outwardly protruding edge flanges (3, 4) and the deep-drawn part (2) forms an edge bead (6) which is delimited by the edge flange (3, 4), and having at least one pouring opening (8), wherein the pouring opening (8) is formed integrally with the deep-drawn part (1).

Description

liquid container

The invention relates to a liquid container having at least one deep-drawn part, at least one further part, wherein the two parts are liquid-tightly connected to each other along an abutment surface via outwardly projecting edge flanges and deep-drawn part forms along the abutting surface extending, limited by the edge flange edge bead, and at least one pouring opening.

DE 1 808 660 discloses a container having a footprint formed by connecting a plurality of at least two components along at least one line, said seam forming a bead, the seam extending across the bottom of the container in one is arranged facing the interior of the container furrow or depression which is equal to or higher than the bead of the connecting seam.

Further bottles which consist of two assembled components can be found, for example, in EP 0 893 355 A2 or WO 2005/037675.

The liquid containers described in these documents are manufactured by a blowing process. A disadvantage of this method is that this method has no very high dimensional accuracy. In particular, in the production of bottles whose pouring opening is made in one piece with the bottle body, when using the blowing process, manufacturing inaccuracies frequently occur in the region of the pouring opening, which can lead to the bottle not being able to be closed.

It is therefore an object of the invention to eliminate this disadvantage of the prior art.

This object is achieved by a liquid container of the type mentioned above in that the pouring opening is formed integrally with the deep-drawn part. A one-piece production of the pouring spout with the bottle body has the advantage that the pouring spout can not come off, while a higher manufacturing accuracy can be achieved by using the thermoforming technique. In addition, it represents a cost-effective production method, because an additional manufacturing step, namely the attachment of a pouring eliminates.

In a preferred embodiment of the invention, the pouring opening is made entirely in one piece with the deep-drawn part. Alternatively, more Parts may additionally be attached to the pouring opening or to the deep-drawn part in the region of the pouring opening, for example by means of welding, wherein these parts may, for example, be rings which serve to further improve the stability of the pouring opening. Likewise, a sealing of the pouring opening may be provided, which must be removed when the liquid container for the first time liquid is removed.

The deep-drawn part and the further part of the liquid container can be connected to one another in many ways, wherein in one embodiment of the invention arranged between the at least one deep-drawn part and the further part abutting surface is arranged transversely to the longitudinal axis of the liquid container. In this way, a so-called cross seam is generated. For example, both parts are deep-drawn and form on the one hand the upper part with the pouring opening and on the other hand, the lower part with the footprint of the liquid container. This also different upper and lower parts can be combined with each other, for example, to obtain liquid containers with different volumes. In this case, the upper part is joined together with the pouring opening with lower parts of different sizes and welded. Usually, the individual parts are rotationally symmetric. If they also have a substantially conical body, then these parts have the advantage that they can be stacked and thus save space and transported before assembly to a liquid container according to the invention and stored.

As an alternative to a transverse seam, the abutting surface arranged between the at least one deep-drawn part and the further part is arranged parallel to the longitudinal axis of the liquid container.

In a preferred embodiment, the further part is formed as a flat surface and closes the deep-drawn part in its entirety. This the deep-drawn part occlusive part, for example, a film or plastic plate, which is preferably liquid-tightly connected to the edge flange of the deep-drawn part by welding or gluing. The production of such a liquid container is particularly cost-effective, for example, the deep-drawn part can be purchased, and then provided with a film or plastic plate, so that the manufacturer of the liquid container does not have its own thermoforming system.

In a further embodiment of the invention, the liquid container on two at least one partition liquid-tight from each other separate chambers, which are suitable for receiving two liquids. Such Bottle is suitable, for example, to receive a fruit juice in one chamber, in the second chamber another juice.

In one embodiment of the liquid container with two chambers, the at least two parts are manufactured as deep-drawn parts and closed by a common planar cover, wherein the two parts are arranged side by side on the same side of the cover, the two parts pivoted to each other and liquid-tight connected at their abutment surface are. The flat cover is folded during pivoting of the two deep-drawn parts and acts on the one hand as a hinge and at the same time forms a double partition which separates the two chambers formed by the deep-drawn parts liquid-tight from each other.

Alternatively, it is provided that the two deep-drawn parts are each liquid-tightly closed with their own flat cover, wherein the two parts are arranged such that the two flat covers facing each other and the parts are connected to each other at an abutting surface in the region of the flat covers.

In a further preferred embodiment of the invention, the at least two parts are manufactured as deep-drawn parts of a single common plastic film, the two parts pivoted to each other and liquid-tightly connected to each other at its abutment surface, wherein a partition wall between the two parts is arranged on the abutting surface. In this way, the two parts of the liquid container are manufactured by deep drawing in one step and only need to be folded and welded at its abutment surface to obtain a liquid container with two separate chambers.

In the liquid container according to the invention with two separate chambers, a further pouring opening is usually provided, wherein each pouring opening is assigned in each case to a chamber of the liquid container. Thus, the contents of each chamber can be removed independently of the other chamber of the liquid container. It can also be provided that the two chambers of the liquid container can be separated. This can be realized most easily via predetermined breaking points in the connecting seam of the two chambers, wherein the partition wall separating the two chambers has to be double-walled in order to obtain two liquid containers after separation of the chambers.

Each of the preceding exemplary embodiments has at least one edge bead in the region of the impact surface of the at least two parts, in order to prevent it from protruding To prevent the two parts connecting (welding) seam, which would affect the stability and handling of the bottle.

The object is further achieved with a kit for the production of a liquid container according to the invention, wherein at least one deep-drawn part having at least one integrally formed with the deep-drawn part pouring opening is provided, and at least one further part, the two parts projecting outwardly Have edge flanges and at least the deep-drawn part has along the edge flange extending edge bead.

Preferably, in this case, the at least one deep-drawn part forms the upper part of the liquid container with a pouring opening; the other part is also deep-drawn and forms the lower part of the liquid container with a footprint.

The subject matter of the invention will be explained in more detail below on the basis of some exemplary embodiments with associated figures. Show:

1 shows a liquid container according to the invention in a simplified, partially torn side view.

FIG. 1A shows a detail view of the pouring opening of the liquid container from FIG. 1; FIG.

2 shows a variant of a liquid container according to the invention in a partially torn side view.

Fig. 3 shows the liquid container of Figure 2 in a section along the line III-III of Fig. 2.

4 shows a construction variant of a liquid container according to the invention in an axial section;

5 shows a further embodiment of a liquid container according to the invention with two separate chambers in an axial section. and

Fig. 6 shows another embodiment of a liquid container according to the invention with two separate chambers before the pivoting of the two parts to each other.

As can be seen from the exemplary embodiment according to FIG. 1, the hollow plastic body of the liquid container is cuboid in its basic form composed of two parts 1 and 2, of which the part 1 is deep-drawn and the part 2 forms a flat cover. To connect the two parts 1 and 2, these are provided with outwardly projecting edge flanges 3 and 4, which lie flat against each other and liquid-tight, for example, by welding, are connected. However, in contrast to conventional liquid containers made of two parts welded together, the edge flanges 3, 4 do not protrude beyond the outer envelope surface of the plastic body. The deep-drawn part 1 of the plastic body is namely provided with a along the abutment surface 5 between the parts 1 and 2 extending, re-entrant edge bead 6, which is bounded by the edge flange 3 of the deep-drawn part 1. Since the width b of the edge flanges 3, 4 at most corresponds to the bead depth t, the edge flanges 3, 4 do not protrude beyond the outer envelope surface of the hollow plastic body, so that despite the connection of the parts 1 and 2 via outwardly projecting edge flanges 3, 4 no Deterioration in the handling of the liquid container by the edge flanges 3, 4 occurs. The pouring opening 7 consists of a one-piece made with the deep-drawn part 1 spout, which is optionally provided with a screw thread for a screw cap.

FIG. 1A shows a detailed view of the pouring opening 7 of the liquid container from FIG. 1, this pouring opening 7 essentially being a circular opening in the deep drawn part 1, onto which a pouring spout is welded in a known manner. The pour spout is preferably closed with a closure cap and may additionally be closed with a sealing film which is removed before the first removal of the contents of the liquid container.

In contrast to the embodiment according to FIG. 1, the plastic body of the liquid container shown in FIGS. 2 and 3 is composed of two deep-drawn parts 1 and 2 which each have an edge bead 6 along the abutment surface 5. The plastic body is essentially formed according to a body of revolution, wherein the edge flanges 3, 4 are due to the vote of the flange width b and the bead depth t in turn within the edge thicknesses 6 bridging envelope surface, as shown in FIG. 3 can be removed. The plastic body thus effectively forms a circumferential bead in the area of the abutment surface 5, which is divided by the edge flanges 3, 4 into two partial thicknesses, namely the edge thicknesses 6.

From Fig. 3 it can be seen that 7 constrictions must be taken into account by the edge bead 6 in the region of the pouring opening 8 of the spout. If such constrictions are to be avoided, then a separately produced spout approach could be placed on the plastic body. One Screw thread in the spout area with a thread for receiving a screw cap is hereby produced during deep drawing of parts 1 and 2.

According to FIGS. 1, 2 and 3, the abutting surface 5 extends axially between the two deep-drawn parts 1 and 2; the longitudinal axis of the plastic body determined in its basic form by a rotary body thus lies within the abutment surface 5. However, this is not mandatory, as can be seen from FIG. 4. The embodiment shown in Fig. 4 shows a hollow plastic body of two deep-drawn parts 1 and 2, the abutment surface 5 is aligned perpendicular to the longitudinal axis of the plastic body. The edge bottle 3, 4 are in turn in the region of a re-entrant bead, which is divided by the edge bottle 3, 4 in two partial thickness, namely the edge beads 6, so that the edge bottle 3, 4 do not project beyond the outer envelope surface of the plastic body. The edge beads 6 on both sides of the edge flanges 3, 4 are not only a prerequisite for not over the envelope surface of the plastic body projecting edge flange, but also ensure free access to the edge flanges 3, 4 by tools, such as welding tongs, for connecting the edge flanges third , 4 are needed. Apart from that, the edge beads 6 bring an additional stiffening of the plastic body with it. Again, the pouring opening 8 is made in one piece with the deep-drawn part 1.

The lower part 2 of the liquid container shown in Fig. 4 may have a different height, so that when assembling the upper part 1 and the lower part 2 liquid containers are obtained with different filling volumes.

The liquid container according to FIG. 5 initially differs from that according to FIGS. 2 and 3 in that the two deep-drawn parts 1, 2 were made from a common plastic film, so that they are connected to one another via a bending edge 9 the two deep-drawn parts 1, 2 are pivoted against each other for joining the hollow plastic body until the edge flanges 3, 4 emanating from the bending edge 9 can be connected to each other in a liquid-tight manner. In addition, the edge bottle 3, 4 are not directly connected, but via a partition wall 10, which is encompassed by the bending edge 9. This partition wall 10 divides the hollow plastic body into two chambers 11 and 12, which can be filled with different liquids. Accordingly, each of these chambers 11, 12 forming deep-drawn parts 1 and 2 are also provided with separate spout lugs 13, wherein the pouring opening 8 in turn is made in one piece with the deep-drawn part 1, 2. The advantages of working within one ing edge beads 6 formed bead arranged edge flanges 3 and 4 are retained even in such an embodiment.

In Fig. 6, a not yet assembled liquid container is shown, wherein two deep-drawn parts 1, 2 are arranged on the same side of a common film 13. The film 13 is liquid-tightly applied to the extending in a plane edge flanges 4 of the two bottom-side contiguous deep-drawn parts 1, 2. By folding the film 13 (shown in phantom) around a resulting fold line 14, a liquid container with two chambers is formed, wherein the film 13 forms a double-layered partition. The fixation of the two deep-drawn parts 1, 2 in a folded over the film 13 position does not necessarily take place via a weld or adhesive seam; also, a sleeve may be provided which is slipped over the two folded deep-drawn parts 1, 2. Preferably, in the fold line 14, a desired separation line is additionally provided, so that after removal of the cuff, the two chambers of the liquid container fold apart and can be separated along the desired separation line to each other to obtain individual liquid container similar to FIG.

A further liquid container according to the invention is obtained when two liquid containers according to FIG. 1 are placed against one another with their flat cover 2 and are connected to one another along the covers 2 by means of shitting or gluing. In this way, in turn, a liquid container is obtained with two chambers, each chamber has a pouring opening 8, which is made in one piece with the respective deep-drawn part.

Claims

1. A liquid container having at least one deep-drawn part (1), and at least one further part (2), wherein the two parts (1, 2) are connected to each other via outwardly projecting edge flanges (3, 4) liquid-tight and the deep-drawn part (2 ) along the abutting surface (5) extending through the edge flange (3, 4) limited edge bead (6) forms, and at least one pouring opening (8), characterized in that the pouring opening (8) integral with the deep-drawn part (1) is trained.

2. A liquid container according to claim 1, characterized in that between the at least one deep-drawn part (1) and the further part (2) arranged abutment surface (5) is arranged transversely to the longitudinal axis of the liquid container.

3. A liquid container according to claim 2, characterized in that the at least one deep-drawn part (1) and the further part (2) are rotationally symmetrical and have a substantially conical body.

4. A liquid container according to claim 1, characterized in that between the at least one deep-drawn part (1) and the further part (2) arranged abutment surface (5) is arranged at least partially parallel to the longitudinal axis of the liquid container.

5. A liquid container according to any one of claims 1 to 4, characterized in that the further part (2) is formed as a flat surface and the thermoformed part (1) closes.

6. A liquid container according to one of claims 1 to 5, characterized in that the liquid container has two liquid-tight over at least one partition (10) separated from each other chambers (11, 12) which are suitable for receiving two liquids.

7. A liquid container according to claim 6, characterized in that the at least two parts (1, 2) are manufactured as deep-drawn parts and closed by a common planar cover, wherein the two parts (1, 2) are arranged side by side on the same side of the cover , the two parts (1, 2) are pivoted to each other and connected to each other at their abutting surface liquid-tight.

8. A liquid container according to claim 6, characterized in that two parts (1) manufactured as deep-drawn parts and each with a flat Ab- Cover (2) are closed, wherein the two parts (1) are arranged such that the two planar walls (2) facing each other and the parts (1) on an abutment surface (5) are interconnected.

9. A liquid container according to claim 7 or 8, characterized in that the two parts (1) are detachably connected to each other.

10. A liquid container according to claim 6, characterized in that the at least two parts (1, 2) made as deep-drawn parts of a single common plastic film, the two parts (1, 2) to each other and pivotally connected to each other at their abutment surface (5) , wherein a partition (10) between the two parts (1, 2) on the abutment surface (5) is arranged.

11. A liquid container according to one of claims 1 to 10, characterized in that a further pouring opening (8) is provided, wherein each pouring opening (8) is associated with a respective chamber (11, 12) of the liquid container.

12. Kit for the production of a liquid container according to one of claims 1 to 11 with at least one deep-drawn part (1) having at least one integrally formed with the deep-drawn part pouring opening (8), and at least one further part (2), wherein the both parts (1, 2) have outwardly projecting edge flanges (3, 4) and at least the deep-drawn part (2) along the edge flange (3, 4) extending edge bead (6).

13. Kit according to claim 13, characterized in that the at least one deep-drawn part forms the upper part of the liquid container with a pouring opening, the further part is also deep-drawn and forms the lower part of the liquid container with a base.

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