Capsule for preparing a beverage, made of an aluminium alloy

Abstract

A capsule (1) designated for preparing a beverage upon injection of liquid into the capsule by means of a beverage machine, comprises a cup-shaped body (10) and a closing lid (11) through which the beverage is to be dispensed, said closing lid (11) being sealed on said body (10) and defining therebetween an inner volume for holding beverage preparation ingredients, such as ground coffee. The capsule (1) is made of an aluminium alloy of the series 3xxx, and preferably of the aluminium alloy 3004 or 3104. Use for improving the sustainability of the capsules for beverage preparation.

1 . A capsule designated for preparing a beverage upon injection of liquid into the capsule by means of a beverage machine, the capsule comprising a cup-shaped body and a closing lid through which the beverage is to be dispensed, the closing lid being sealed on the body and defining therebetween an inner volume for holding beverage preparation ingredients, such as ground coffee, characterized in that the capsule is made of an aluminium alloy of the series 3xxx. 
     
     
         2 . A capsule according to  claim 1 , wherein the body of the capsule is provided with a sidewall and a bottom through which liquid is to be introduced, the thickness of the aluminium alloy in the bottom and the sidewall of the body being comprised between 50 to 100 micrometres. 
     
     
         3 . A capsule according to  claim 2 , wherein the thickness of the aluminium alloy is comprised between 90 and 100 micrometres. 
     
     
         4 . A capsule according to  claim 1 , wherein the thickness of the closing lid is comprised between 20 and 60 micrometres. 
     
     
         5 . A capsule according to  claim 1 , wherein the shape of the body is frustoconical, with an inclined sidewall and a bottom dome-shaped. 
     
     
         6 . A capsule according to  claim 1 , wherein the body comprises a flange, the closing lid being sealed on the flange. 
     
     
         7 . A capsule according to  claim 6 , wherein the flange comprises sealing means. 
     
     
         8 . A capsule according to  claim 6 , wherein the sealing means are made of a peripheral seal in the form of a polymeric seal located between the sidewall and the flange. 
     
     
         9 . A capsule according to  claim 6 , wherein the flange comprises integrally formed sealing means. 
     
     
         10 . A capsule according to  claim 1 , wherein the closing lid is flat. 
     
     
         11 . A capsule according to  claim 1 , wherein the body is made from a unique foil of aluminium alloy. 
     
     
         12 . A capsule according to  claim 1 , wherein the capsule is made of a recycled aluminium alloy. 
     
     
         13 . (canceled)