Isothermal pocket bag for bottles and foodstuffs

Abstract

This invention consists in a flexible, very light and pocket-size container, which can keep the temperature of a liquid inside a bottle ( 4 ) even. The bag ( 1 ) is made by folding a rectangular foil in two and then welding two sides, leaving only one side open through which the bottle ( 4 ) or the food is inserted. The foil is made up of thermal-insulation, reflective and waterproof materials. Two holes ( 2.1, 3.1 ) having the same dimensions as a bottle neck ( 4 ) are located near the open shorter side. An elastic band ( 8 ) closes the isothermal bag ( 1 ) after rolling it up or folding it up thus making it compact and pocket-size. The bag ( 1 ) wraps up the bottle ( 4 ) completely but the holes ( 2.1, 3.1 ) enable users to drink without opening and closing the bag ( 1 ). Its closing device is functional, hygienic and user-friendly.

1 - Isothermal pocket bag for bottles and foodstuffs having approximately the same size as a bottle ( 4 ); the bag ( 1 ) is made up of a soft and flexible rectangular foil with one or more layers of synthetic materials which are specifically used for foodstuffs; these materials can keep the temperature inside the bag ( 1 ) quite even as they have thermal-insulation, reflective and waterproof characteristics; said bag ( 1 ) is made by folding the above-mentioned rectangular foil in two, which is then fixed by two sides joined by welding or any other method; the final product is a bag with just one opening on the shorter side; said opening is delimited by two flaps ( 2 ,  3 ), each of which ( 2 ,  3 ) has a hole ( 2 . 1 ,  3 . 1 ) that is approximately the same size as a bottle neck ( 4 ); the holes ( 2 . 1 ,  3 . 1 ) are located near the edges ( 2 . 2 ,  3 . 2 ) of the open shorter side; these holes ( 2 . 1 ,  3 . 1 ) are approximately coaxial and the bottle neck ( 4 ) goes trough them when the bag ( 1 ) is used; the edges of each hole ( 2 . 1 ,  3 . 1 ) may be elasticised or reinforced by welding or rings made up of different materials; an elastic band ( 8 ), a string or a ribbon may be fixed outside the isothermal bag ( 1 ) to close it after rolling it up or folding it up.  
     
     
         2 - Isothermal pocket bag, according to  claim 1 , characterised by the composition of the flexible foil, which is made up of three layers of different materials; the external layer is reflective, the intermediate one has thermal-insulation characteristics and the internal one is waterproof and/or reflective.  
     
     
         3 - Isothermal pocket bag, according to  claim 1 , characterised by the composition of the flexible foil, which is made up of four layers; the external layer is reflective, the two intermediate ones have thermal-insulation characteristics, whereas the internal one is waterproof and/or reflective  
     
     
         4 - Isothermal pocket bag, according to  claim 1 , characterised by the composition of the flexible foil, which is made up of one single layer with thermal-insulation, reflective and waterproof characteristics.  
     
     
         5 - Isothermal pocket bag, according to  claim 1 , characterised by the fact that the elastic band ( 8 ), the string or the ribbon are not fixed onto the bag ( 1 ).  
     
     
         6 - Isothermal pocket bag, according to  claim 1 , characterised by a hole ( 5 ) having the same size as a bottle neck ( 4 ), located on the closed shorter side, with two holes ( 2 . 1 ,  3 . 1 ) near the edges ( 2 . 2 ,  3 . 2 ) of the open shorter side.  
     
     
         7 - Isothermal pocket bag, according to  claim 1 , characterised by one single hole ( 5 ) located on the closed shorter side and whose dimensions are approximately the same as a bottle neck ( 4 ).  
     
     
         8 - Isothermal pocket bag, according to claims  1  and  7 , characterised by an opening on the shorter side provided with a closing device such as a minigrip ( 6 ) and a handle ( 7 ).  
     
     
         9 - Isothermal pocket bag, according to  claim 1 , characterised by round corners and whose bottom may be folded.  
     
     
         10 - Isothermal pocket bag, according to  claim 1 , which is made by joining two rectangular foils, which are fixed together along three sides, that is the two longer sides and the shorter one.