Element of a Capsule and Capsule Containing Ground Coffee Ingredient

Abstract

A capsule element for a capsule comprising a ground coffee ingredient, wherein the capsule element ( 21 ) comprises a rim ( 26 ) for sealing engagement with a second capsule element, at least one sidewall ( 22 ), and a bottom wall ( 23 ), wherein the at least one side wall ( 22 ) and the bottom wall ( 23 ) define an interior chamber ( 24 ) having an opening ( 25 ), the opening spanning a plane (P), wherein further the rim ( 26 ) extends outwards from the sidewall ( 22 ) and surrounds the opening ( 25 ), the rim being bent into the direction of the bottom wall ( 23 ), the rim and the plane (P) of the opening forming an angle (A) of at least about 10°. The invention also relates to a capsule comprising the capsule element and a membrane hermetically sealed thereon.

1 . A first capsule element for a capsule comprising a ground coffee ingredient, wherein the first capsule element comprises:
 a rim for sealing engagement with a second capsule element,   at least one sidewall,   a bottom wall,   an interior chamber defined by the at least one side wall and the bottom wall and having an opening, the opening spanning a plane,   wherein further the rim extends outwards from the sidewall and surrounds the opening, the rim being bent into the direction of the bottom wall, the rim and the plane of the opening forming an angle of at least about 10°.   
     
     
         2 . The first capsule element according to  claim 1 , wherein the angle is at least about 12°. 
     
     
         3 . The first capsule element according to  claim 1 , wherein the angle is from about 12° to about 26°. 
     
     
         4 . The first capsule element according to  claim 1 , wherein the sidewall has an upper and a lower end, the upper end defining a circle having a first diameter, the lower end defining a circle having a second diameter, wherein the opening is located at the upper end, and optionally wherein the second diameter is smaller than the first diameter. 
     
     
         5 . The first capsule element according to  claim 1 , wherein the first capsule element forms a capsule body. 
     
     
         6 . The first capsule element according to  claim 1 , wherein the first capsule element is rotationally symmetric. 
     
     
         7 . The first capsule element according to  claim 1 , wherein the first capsule element is essentially gas-tight. 
     
     
         8 . A capsule comprising:
 the first capsule element according to any one of  claims 1  to  7 , and   a second capsule element for sealing connection with the rim of the first capsule element, and   optionally wherein the second capsule element is in sealing connection with the rim.   
     
     
         9 . The capsule according to  claim 8 , wherein the sealing connection of the second capsule element with the rim extends from the inner sealing point to the outer sealing point along a rectilinear direction when the capsule is viewed in cross-sectional view. 
     
     
         10 . The capsule according to  claim 8 , wherein the second capsule element is a membrane. 
     
     
         11 . The capsule according to  claim 10 , wherein the membrane has a thickness of from about 30 μm to about 40 μm. 
     
     
         12 . The capsule according to  claim 10 , wherein the membrane is impermeable for CO 2 . 
     
     
         13 . The capsule according to  claim 12 , wherein the membrane is an aluminium membrane or a multilayer of aluminium and polymer. 
     
     
         14 . The capsule according to  claim 8 , wherein the capsule is a hermetically or gas-tightly sealed capsule. 
     
     
         15 . The capsule according to  claim 8 , wherein the pressure in the capsule is from about 300 mbar to about 500 mbar. 
     
     
         16 . The capsule according to  claim 8 , wherein the capsule comprises a coffee ingredient. 
     
     
         17 . The first capsule element according to  claim 3 , wherein the angle is:
 from about 14° to about 24°;   from about 16° to about 22°; and/or   from about 18° to about 20°.   
     
     
         18 . The first capsule element of  claim 6 , wherein the first capsule element is essentially frusto-conical in shape. 
     
     
         19 . The first capsule element of  claim 7 , wherein the first capsule element is made of aluminium or a polymer composition comprising a gas barrier or a laminate of polymer and aluminium. 
     
     
         20 . The capsule according to  claim 12 , wherein the membrane is gas-tight.