Metallic screw cap for bottle

Abstract

The present application describes a metallic screw cap for bottles that comprises a cork section with truncated cone shape joined to the inner surface of the upper end of said cap. The metallic screw cap for bottles described in this invention allows easy implementation, i.e. it does not change the bottling process of bottles with metallic caps; it further enhances the sealing properties of the cap and promotes an increase of resistance of the metallic cap thereby allowing the already bottled bottle with the cap to be subjected to greater variations of pressure and temperature. The present invention is useful for bottling bottles of wine, spirit drinks, beer, sparkling wine, among others.

1 . Metallic screw cap for bottles which comprises a section with truncated cone shape of cork/cork agglomerate joined to the inner surface of the upper end of said cap, wherein the section of cork/cork agglomerate further comprises a cylindrical cork layer/cork agglomerate between the section with truncated cone shape and the inner surface of the upper end of said cap, and joined to said section and surface. 
     
     
         2 . Cap according to  claim 1 , further comprising a polymeric sealing layer on the inner surface of the top end of said cap between the cork section with truncated cone shape and the cap. 
     
     
         3 . Cap according to  claim 1 , wherein the section with truncated cone shape of cork/agglomerated cork or the cylindrical layer of cork/cork agglomerate is joined to the inner surface of the upper part of said cap through an adhesive. 
     
     
         4 . Cap according to  claim 3 , wherein the polymeric sealant and the adhesive are made of the same material. 
     
     
         5 . Cap according to  claim 2 , wherein the seal is made of silicone or a polymeric material. 
     
     
         6 . Cap according to  claim 3 , wherein the adhesive is suitable for food contact. 
     
     
         7 . Cap according to  claim 6 , wherein the adhesive is hot glue or hot melt adhesive. 
     
     
         8 . Cap according to  claim 1 , wherein the height of the cork section with truncated cone shape ranges between 0.5-50 mm. 
     
     
         9 . Cap according to  claim 1 , wherein the height of the cork section with truncated cone shape ranges between 10-25 mm. 
     
     
         10 . Cap according to  claim 1 , wherein the diameter of the section with truncated cone shape is slightly inferior than the inner diameter of the neck of said bottle. 
     
     
         11 . Cap according to  claim 1 , wherein the diameter of the cork section with truncated cone shape ranges between 10-30 mm. 
     
     
         12 . Cap according to  claim 2 , wherein the thickness of the cylindrical cork layer ranges between 1-4 mm. 
     
     
         13 . Cap according to  claim 2 , wherein the thickness of the cylindrical cork layer ranges between 1.5-2 mm. 
     
     
         14 . Cap according to  claim 1 , wherein the diameter of the cylindrical cork layer is substantially equal to the inner surface of the upper part of said cap. 
     
     
         15 . Cap according to  claim 1 , wherein the cork section with truncated cone shape or the cylindrical cork layer comprises cork granules with a particle size distribution between 0.2-5 mm. 
     
     
         16 . Cap according to  claim 1 , wherein the cork section with truncated cone shape or the cylindrical cork layer comprises cork granules having a particle size distribution of 0.5-2 mm. 
     
     
         17 . Cap according to  claim 1 , wherein the cap further comprises decorations. 
     
     
         18 . Cap according to  claim 1 , wherein the metallic cap comprises aluminum. 
     
     
         19 . (canceled) 
     
     
         20 . (canceled) 
     
     
         21 . Method for manufacturing the cap described in  claim 1 , comprising the following steps:
 preparing the metallic material, which includes the following steps, stamping of metallic material, stretching of metallic material and opening of bridges, and strengthening rings;   preparing a cork section, comprising agglomerating the cork, extruding and molding the obtained agglomerate;   coupling the stopper to the interior of the metallic material.   
     
     
         22 . Method according to  claim 21 , wherein the preparation of the metallic material further comprises the step of decorating the metallic material.