Bio-degradable Compostable Container Closure

Abstract

A bio-degradable compostable container closure is presented. The container closure includes a top surface, a cylindrical side wall extending from the top surface, and a thread on an inner surface of the side wall capable of mating with a thread on the neck of a container and capable of securing the closure to the container. The closure is comprised of a biodegradable and/or compostable plastic resin.

What is claimed is: 
     
         1 . A container closure comprising:
 a top surface;   a cylindrical side wall extending from said top surface;   a thread on an inner surface of said side wall capable of mating with a thread on the neck of a container and capable of securing said closure to said container; and   wherein said closure is comprised of one of a group consisting of a biodegradable plastic resin; and a compostable plastic resin.   
     
     
         2 . The container closure of  claim 1  wherein said plastic resin contains organic filler. 
     
     
         3 . The container closure of  claim 1  wherein said plastic resin contains inorganic filler. 
     
     
         4 . The closure of  claim 1  further comprising a tamper evident portion. 
     
     
         5 . The closure of  claim 4  wherein said tamper evident portion comprises:
 a ring; and 
 a plurality of fracturable elements disposed between a bottom surface of said sidewall and said ring. 
 
     
     
         6 . The closure of  claim 5  wherein when said container closure is initially removed from a container, said fracturable elements are broken and said sidewall is separated from said ring, indicating the container has been opened. 
     
     
         7 . The closure of  claim 5  further comprising a plurality of inward facing tabs disposed about a bottom of a surface of said ring. 
     
     
         8 . The closure of  claim 7  wherein said plurality of inward facing tabs are disposed at an angle with respect to said bottom surface of said ring. 
     
     
         9 . The closure of  claim 1  wherein said closure has an outside diameter of approximately 30.27 millimeters. 
     
     
         10 . The closure of  claim 1  wherein said sidewall has a length of approximately 15.88 millimeters. 
     
     
         11 . The closure of  claim 1  wherein said ring has a length of approximately 4.27 millimeters. 
     
     
         12 . The closure of  claim 1  wherein an outside surface of said sidewall is textured.