Utility package for heating or cooling liquids and food

Abstract

A self-heating package with an inner and outer bag. Heating is provided from the inner bag to the content in the outer bag. The package may be supported by an external box or a utility bag. Additional foam layer is provided to insulate the self-heating package. The utility bag may also provide heating from its internal chamber, thus increasing the heating to the bag-in-bag package.

1 . A self-heating package for heating and dispensing a liquid, comprising: 
 an inner bag, having a first access port to the inside of the inner bag;    an outer bag, said outer bag being disposed to store said liquid, having a second access port to the inside of the outer bag and an opening aligned with said first access port, said inner bag being positioned inside said outer bag, such that said inner bag is substantially immersed in said liquid in said outer bag;    an exothermic chemical inside the inner bag, said exothermic chemical being adapted to generate heat upon activation.    
   
   
       2 . The self-heating package of  claim 1 , further comprising: 
 an internal water pouch placed inside said inner bag, said water pouch having water therein, said water pouching having a pull string to open said water pouch, thus causing said water to activate said exothermic chemical.    
   
   
       3 . The self-heating package of  claim 1 , further comprising: 
 an external water pouch for storing water, said water being adapted to activate said exothermic chemical, said external water pouch having a feed tube for feeding said water into said inner bag through said first access port.    
   
   
       4 . The self-heating package of  claim 1 , further comprising: 
 a foam pouch enclosing said outer bag for providing insulation.    
   
   
       5 . The self-heating package of  claim 4 , wherein said foam pouch has an internal chamber for providing additional heating to said outer bag.  
   
   
       6 . The self-heating package of  claim 1 , further comprising: 
 an external insulating bag for enclosing said self-heating package within, said insulating bag having an internal chamber for facilitating additional heating from said inside chamber to said self-heating package.    
   
   
       7 . The self-heating package of  claim 4 , wherein said inner bag is adapted to vent to a spacing between said foam pouch and said outer bag through said first access port.  
   
   
       8 . The self-heating package of  claim 4 , wherein: 
 said inner bag is a symmetrical multi-layered aluminum laminated foil;    said outer bag is laminated film material.    
   
   
       9 . The self-heating package of  claim 8 , wherein said inner bag and said outer bag have predetermined heat tolerance.  
   
   
       10 . The self-heating package of  claim 1 , wherein said outer bag has an expanding base so as to become self-standing when filled with said liquid.  
   
   
       11 . The self-heating package of  claim 3 , further comprising: 
 an insulating utility bag for enclosing said self-heating package within, said utility bag having an internal chamber for facilitating additional heating to said self-heating package, said utility bag being controllably foldable into a compact form factor.    
   
   
       12 . A self-heating packaging for heating and dispensing liquid or food, comprising: 
 an inner bag having a first access port into its interior;    an outer bag having a second access port into its interior, said outer bag being adapted to store said liquid in its interior, said inner bag being placed within said outer bag such that said inner bag is substantially immersed in said liquid when said outer bag is filled with said liquid;    a collapsible box, said box being adapted to contain said outer bag, said box having four side walls, said box having a first opening on one of said side walls and aligned to said first access port, and a second opening on one of said side walls and aligned to said second access port;    an exothermic chemical within said inner bag, said chemical being adapted to generate heat upon activation with an activation water.    
   
   
       13 . The self-heating package of  claim 12 , further comprising: 
 a water pouch for storing said activation water, said water pouch being placed within said inner bag, said water pouch being adapted to be torn open to allow said activation water to interact with said exothermic chemical.    
   
   
       14 . The self-heating package of  claim 13 , further comprising: 
 a foam insulation layer placed between said outer bag and said box, for providing insulation to said outer bag, also for providing heating from the outside inward by use of exothermal chemicals.    
   
   
       15 . The self-heating package of  claim 14 , wherein said first access port is adapted to vent to spacing formed between said foam insulation and said outer bag after said exothermic chemical is activated by said activation water.  
   
   
       16 . The self-heating package of  claim 15 , wherein: 
 said inner bag is a symmetrical multi-layered aluminum laminated foil;    said outer bag is laminated film material.    
   
   
       17 . A utility bag combination, comprising: 
 an external insulating bag, disposed to be foldable into a smaller form factor, said external insulating bag having an internal chamber, said internal chamber being disposed to provide a heating chamber;    a self-heating bag, comprising: 
 an inner bag, having a first access port to the inside of the inner bag;  
 an outer bag, said outer bag being disposed to store said liquid, having a second access port to the inside of the outer bag and an opening aligned with said first access port, said inner bag being positioned inside said outer bag, such that said inner bag is substantially immersed in said liquid in said outer bag;  
 an exothermic chemical inside the inner bag, said exothermic chemical being adapted to generate heat upon activation.  
   
   
   
       18 . The utility bag combination of  claim 17 , said self-heating bag further comprising: 
 an internal water pouch placed inside said inner bag, said water pouch having water therein, said water pouching having an activation mechanism to activate said water to activate said exothermic chemical.    
   
   
       19 . The utility bag combination of  claim 18 , wherein: 
 said inner bag is a symmetrical multi-layered aluminum laminated foil;    said outer bag is laminated film material.    
   
   
       20 . The utility bag combination of  claim 18 , said external insulating bag having fastening means to help reduce said insulating bag into a smaller form factor, said external insulating bag also having a storage compartment.  
   
   
       21 . The utility bag combination of  claim 18 , further comprising at least one of: 
 Zipper closure or Velcro closure.