Self-Cooling Package

Abstract

A self-cooling package comprises a first cavity ( 10 ) containing a product to be cooled, a second cavity ( 20 ) forming a heat exchanger and containing a coolant liquid suitable for evaporating under the effect of a depression and a third cavity ( 30 ) containing an adsorbent ( 31 ) suitable for trapping the coolant liquid vapours. The package also comprises a container ( 40 ) suitable for receiving at least the third cavity ( 30 ), at least a part of the walls ( 41 ) of the container ( 40 ) having a thickness of less than 0.15 mm. The package uses a container having a thin wall thickness to receive the adsorbent, which is inexpensive and easy to manufacture. The manufacture of the package is thus simplified and reduced. The container wall thinness also ensures limited heat leakage towards to cooled product.

1 : Self-cooling package comprising: 
 a first cavity containing a product to be cooled;    a second cavity forming a heat exchanger and containing a coolant liquid suitable for evaporating under the effect of a depression;    a third cavity containing an adsorbent suitable for trapping the coolant liquid vapours;    a container (suitable for receiving at least the third cavity, at least a part of the walls of the container having a thickness of less than 0.15 mm.    
   
   
       2 : Self-cooling package according to  claim 1 , wherein at least a part of the walls of the container has a thickness comprised between 0.08 and 0.1 mm.  
   
   
       3 : Self-cooling package according to  claim 1 , wherein the container has beadings.  
   
   
       4 : Self-cooling package according to  claim 1 , wherein the adsorbent is moulded into a rigid block so as to ensure maintenance of the walls of the container.  
   
   
       5 : Self-cooling package according to  claim 4 , wherein the container has beadings that are formed in a portion of side walls extending beyond the adsorbent block.  
   
   
       6 : Self-cooling package according to  claim 1 , wherein the container also contains at least a part of the second cavity.  
   
   
       7 : Self-cooling package according to  claim 1 , wherein the container also contains at least a part of the first cavity.  
   
   
       8 : Self-cooling package according to  claim 1 , wherein the container is cylindrical.  
   
   
       9 : Self-cooling package according to  claim 1 , wherein the container is constituted by a can or a portion of a can.  
   
   
       10 : Self-cooling package according to  claim 1 , wherein the container His made of steel.  
   
   
       11 . Self-cooling package according to  claim 1  wherein the second cavity has a common wall with the third cavity, the edges of said common wall being fixed to the containers.  
   
   
       12 : Self-cooling package according to  claim 1 , wherein the second cavity has a common wall with the first cavity, the edges of said common wall being fixed to the containers.  
   
   
       13 : Self-cooling package according to  claim 1 , wherein the first cavity is separated from the adsorbent by an extension of the side walls of the container beyond the adsorbent.  
   
   
       14 : Self-cooling package according to  claim 1 , wherein the second cavity is separated from the adsorbent by an extension of the side walls of the container (beyond the adsorbent.  
   
   
       15 : Use of a self-cooling package according to  claim 13  for a cosmetic product contained in the first cavity of the package.  
   
   
       16 : Use of a self-cooling package according to  claim 13  for an iced product contained in the first cavity of the package.  
   
   
       17 : Self-cooling package according to  claim 3 , wherein the container also contains at least a part of the second cavity.  
   
   
       18 : Self-cooling package according to  claim 3 , wherein the container also contains at least a part of the first cavity.  
   
   
       19 : Self-cooling package according to  claim 13 , wherein the container has beadings that are formed in a portion of side walls extending beyond the adsorbent.  
   
   
       20 : Self-cooling package according to  claim 2 , wherein the container has beadings.  
   
   
       21 : Self-cooling package according to  claim 2 , wherein the adsorbent is moulded into a rigid block so as to ensure maintenance of the walls of the container.  
   
   
       22 : Use of a self-cooling package according to  claim 14 , for a cosmetic product contained in the first cavity of the package.  
   
   
       23 : Use of a self-cooling package according to  claim 14 , for an iced product contained in the first cavity of the package.  
   
   
       24 : Self-cooling package according to  claim 14 , wherein the container has beadings that are formed in a portion of side walls extending beyond the adsorbent.