MULTILAYER ALUMINUM CAPSULE

Abstract

A multilayer capsule of the types which cover the neck of wine or liquor bottles is made is made exclusively of aluminum, or at least 98% by weight of aluminum. A production method for preparing the capsule can include forming a capsule body and fixing an aluminum disc in the upper part of the body. Another production method can include cutting a multilayer sheet into suitable size for the capsule; and forming the capsule by deep-drawing.

Claims

1. A multilayer aluminum capsule, comprising at least two aluminum layers, wherein each of the layers has a thickness between 4 microns and 50 microns, and wherein the layers are made of aluminum.

2. The aluminum capsule according to claim 1, wherein the number of layers is selected from the group consisting of 3, 4, 5, and 6.

3. The aluminum capsule according to claim 1, wherein the thickness of each of the layer is between 10 microns and 20 microns.

4. The aluminum capsule according to claim 1, wherein the capsule consists of 4 aluminum layers, each of the layers being about 20 microns in thickness.

5. The aluminum capsule according to claim 1, wherein each aluminum layer comprises at least 98% by weight of aluminum.

6. A method for producing the capsule defined in claim 1, comprising: a) adhering together at least two aluminum layers with a thickness between 4 microns and 50 microns to produce a multilayer aluminum sheet; b) cutting the multilayer sheet into suitable size to form a capsule body; c) putting glue on one of the edges of the cut sheet; d) forming a capsule body by folding and sticking the opposite edges together; e) fixing an aluminum disc in the upper part of the body formed in step d).

7. A method for producing the capsule defined in claim 1, comprising: a) adhering together of at least two aluminum layers with a thickness between 4 microns and 50 microns to produce a multilayer aluminum sheet; b) cutting the multilayer sheet into suitable size for the capsule; c) forming the capsule by deep-drawing.

8. A bottle comprising the capsule defined in claim 1.

Description

DETAILED DESCRIPTION

[0027] As mentioned, the new capsule of the invention is made of aluminum. When reference is made to aluminum in the present invention, it refers to aluminum or to a metal alloy comprising at least 98% by weight of aluminum. Therefore, the capsule is preferably made of a metal alloy comprising at least 98% by weight of aluminum. More preferably, the capsule is a metal alloy comprising at least 99.5% by weight of aluminum.

[0028] As indicated above, the capsule of the present invention is characterized in that it comprises at least two aluminum layers, where each of the layers has a thickness comprised between 4 microns and 50 microns.

[0029] Preferably, the number of layers is selected from 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12. More preferably, the number of layers is selected from 3, 4, 5, 6. Particularly, the number of layers is 4.

[0030] Preferably, the thickness of each of the aluminum layers is comprised between 10 microns and 20 microns. Particularly, the capsule consists of 4 aluminum layers, each of the layers being 20 microns.

[0031] As mentioned above, a method of the invention relates to a production method for producing an aluminum capsule comprising the steps of:

[0032] a) adhering together at least two aluminum layers with a thickness comprised between 4 microns and 50 microns to produce a multilayer aluminum sheet;

[0033] b) cutting the multilayer sheet into suitable size to form the capsule body;

[0034] c) putting glue on one of the edges of the cut sheet;

[0035] d) forming the capsule body by folding and sticking the opposite edges together:

[0036] e) fixing an aluminum disc in the upper part of the body formed in step d).

[0037] Preferably, the aluminum disc of step e) is also made of the multilayer sheet produced in step a).