AU2002241435A1

AU2002241435A1 - Collapsible container

Info

Publication number: AU2002241435A1
Application number: AU2002241435A
Authority: AU
Inventors: Ake Rosen
Original assignee: Eco Lean Research and Development AS
Current assignee: Eco Lean Research and Development AS
Priority date: 2001-03-20
Filing date: 2002-03-15
Publication date: 2003-03-27
Anticipated expiration: 2022-03-15

Description

PORTION CONTAINER

FIELD OF THE INVENTION

The present invention relates to a collapsible portion-type container for liquid contents and more specifically to a container as defined in the preamble to claim 1.

BACKGROUND ART

A container of the type described by way of introduction is known from, for instance, W09941155. This document describes a container of a collapsible type which comprises three wall portions, two forming opposite sides walls and the third forming a bottom wall. The walls which are made of a plastic material with or without a filler are flexible and joined with each other to form a compartment whose volume is dependent on the relative position of the walls. The container comprises a duct means through which the container in the first place is filled but which can also be used as pouring means when consuming the contents of the container. The con- tainer further comprises a carrying means arranged along a first side. The container has its greatest rigidity in the plane that is formed of the connecting portion interconnecting the side wall portions included in the container. In the other directions, the container has a limited degree of rigidity. Such a container functions best for foodstuffs which in consumption are portioned out in another drinking vessel . Moreover the container is especially intended for volumes up to a few litres .

OBJECTS OF THE INVENTION

The object of_. the present invention is to provide an improved, durable container which is intended for use as a portion container and from which the contents can be consumed directly without an aid. ω w t t μ> μ>

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1

the container to be held like a bottle and be moved to the user's mouth without the duct means or the side walls being upset or folded.

Moreover, the stiffeners contribute to providing a container which is convenient to hold. For instance, the container can be held by the user using the stiffeners while drinking. If the container and its contents, for instance, are heated in a microwave oven, the stiffeners provide a gripping surface which is not in direct contact with the hot side wall portions. The small thickness of the material in combination with the large surface of the stiffeners also results in heat being rapidly extracted. Moreover, the stiffeners can be used to hold the container without having to squeeze its compartment while the end portion is being separated. This prevents unintentional spillage.

The pliable and flexible walls make it easy to finally empty the container like a tube, by way of example a tube of toothpaste. This is advantageous if the container is used for a product with high viscosity, such as sauce, yoghurt and soup.

The flexible walls make the container most durable, which allows the user to carry it in its unopened state in a bag or pocket . In a preferred embodiment, the end portion is separated by being torn off. Tearing is an advantageous method since no aid is required to open the container. This very simple opening method also allows the container to be formed in one piece, and of one and the same mate- rial.

In order to facilitate the opening process and afford a good grip, the end portion is preferably formed like a tab. Moreover the tab increases the tearing moment that is formed during the tearing motion. In order to further facilitate the opening process, the end portion should comprise an initiation. The initiation can be arranged, for instance, by a locally heat- affected zone, which causes material embrittlement, or by a local reduction of the wall thickness caused by, by way of example, an enlarged physical pressure. The tab in combination with the initiation significantly facilitates the opening process so that both children and adults can easily open the container.

It is also possible to arrange an opening means in the duct means in connection with the end portion. The opening means can consist of, for instance, a tear strip integrated in the wall portion or knurls on the insides of the walls. A plug or the like can also be arranged in the opening means .

In a preferred embodiment, the stiffeners are arranged on both sides of the compartment. 'This promotes the symmetry of .the container while at the same time the container will be easier to handle in a hot state by holding surfaces being provided on both sides of the longitudinal axis of the container.

In another preferred embodiment, the stiffeners are integrated with the connecting portion. In terms of production this is very advantageous since the stiffeners can be formed by quite simply increasing the surface of the connecting portion in the sections of the container where stiffening is desirable. The material of the stif- feners is thus the same as in the rest of the container, which facilitates the handling of material as well as the disposal of garbage.

In order to make the container easier to hold, it is advantageous to provide the stiffener with an embossment.- Also the end portion and its tab can be provided with an embossment .

In another preferred embodiment, the container is made of a material containing a filler of mineral material and a binder of polyolefin material . The mineral material should preferably be chalk (calcium carbonate) . This combination of materials results in a container which is inexpensive to produce, environment-friendly and easily decomposable.

DESCRIPTION OF THE DRAWINGS The invention will now be described in more detail by way of example and with reference to the accompanying drawings, which illustrate a currently preferred embodiment .

Figs 1 and 2 are perspective views of a preferred embodiment of the container in a filled, unopened state.

Figs 3 and 4 are perspective views of the container in a filled, opened state.

Fig. 5 is a top plan view of a container in which the front side wall is removed. Fig. 6 is a sectional view along line VI-VI in Fig. 5.

Fig. 7 shows the position of the planes in which the container has its greatest rigidity.

TECHNICAL DESCRIPTION

Figs 1 and 2 illustrate a preferred embodiment of the present invention in a filled, unopened state. The container 1 is particularly well suited for liquid foodstuffs -such as milk, fruit juice, water and for products of a higher viscosity, such as sauces, soups and yoghurt. The container 1 is mainly intended as a portion container which in its opened state serves as a drinking vessel. To make the container comfortable to use, the volume of the container should be less than 0.75 litre and more prefer- red less than 0.5 litre. The container allows aseptic manufacture and filling.

The container 1 is of a collapsible type, i.e. compressible or foldable, and comprises three flexible walls, of which two constitute opposite side walls 2 and one is a bottom wall 3. The walls 2, 3 can be made of a plastic material or preferably a material containing a filler of mineral material and a binder of polyolefin

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Claims

1. A collapsible portion-type container (1) for liquid contents, comprising a compartment (4) which is defined by flexible walls (2, 3) and whose volume is dependent on the relative position of the walls (2, 3), said walls (2, 3) being joined along a connecting portion (5) , and a duct means (11) which is formed integrally with two side walls (2) of said walls (2, 3) and which forms a connection between the compartment (4) and the surroundings , c h a r a c t e r i s e d in that the duct means (11) in the filled and unopened state of the container (1) has an end which faces away from the compartment (4) and which is sealed and openable by manual separation of an end portion (14) arranged at said end, and stiffeners (17) are arranged along said connecting portion (5) , which stiffeners (17) give the container (1) stability in two mutually perpendicular planes (18, 20) which in turn are parallel with a longitudinal axis (19) of the container (1) .

2. A container (1) as claimed in claim 1, in which the end portion (14) is removed by being torn off.

3. A container (1) as claimed in any one of the preceding claims, in which the end portion (14) forms a tab (15) .

4. A container (1) as claimed in any one of the preceding claims, in which the end portion (14) comprises an initiation (16) .

5. A container (1) as claimed in claim 4, in which the initiation (16) comprises a locally heat-affected zone.

6. A container (1) as claimed in claim 4 or 5, in which the initiation (16) comprises a local reduction of the wall thickness.

7. A container (1) as claimed in any one of claims 1-3, in which the end portion (14) comprises an opening means arranged in the side wall (2) .

8. A container (1) as claimed in claim 1, in which the duct means (11) is arranged concentrically round the longitudinal axis (19) of the container.

9. A container (1) as claimed in claim 1, in which the stiffeners (17) are arranged on both sides of the compartment (4) .

10. A container (1) as claimed in claim 9, in which the stiffeners (17) are formed integrally with the con- necting portion (5) .

11. A container (1) as claimed in claim 9 or 10, in which the stiffeners (17) comprise embossments.

12. A container (1) as claimed in claim 10 or 11, in which the stiffeners (17) comprise an external reinforce- ment .

13. A container (1) as claimed in any one of claim 10-12, in which the stiffeners (17) are provided with throughgoing openings .

14. A container (1) as claimed in any one of the preceding claims, which is made of a material containing a filler of mineral material and a binder of polyolefin material .

15. A container (1) as claimed in claim 14, in which the mineral material consists of chalk (calcium carbo- nate) .