Glass bottles made from recycled mixed color cullet

Abstract

An automated method for recycling mixed colored cullet glass (i.e., broken pieces of glass of mixed colors and types) into new glass products. A computer controlled process identifies the virgin glass raw materials, the desired target glass properties, the composition of a batch of mixed colored cullet, and the quantity of cullet to be used in the glass melt, and the computer controlled process automatically determines the proper amounts of raw materials to add to the batch of mixed colored cullet so that recycled glass is produced having the desired coloring oxides, redox agents, and glass structural oxides in the proper proportion. The recycled glass is then used to make glass products such as beer bottles.

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       18 . A glass bottle including recycled mixed color cullet wherein said bottle is amber in color and has a 550 nm transmission of 8-20% and a redness ratio of 1.2-3.0.  
   
   
       19 . A glass bottle as in  claim 18 , wherein said amber glass bottle has a 550 nm transmission of 12-15% and a redness ratio of 1.8-2.0.  
   
   
       20 . A glass bottle as in  claim 18 , wherein said amber glass bottle has a chromium level above trace chromium contamination levels.  
   
   
       21 . A glass bottle as in  claim 20 , wherein said amber glass bottle has a weight percent of chromium greater than 0.01%.  
   
   
       22 . A glass bottle as in  claim 21 , wherein said amber glass bottle has a weight percent of chromium of 0.01% to 0.3%.  
   
   
       23 . A glass bottle as in  claim 22 , wherein said amber glass bottle has a weight percent of chromium of 0.015% to 0.15%.  
   
   
       24 . A glass bottle as in  claim 23 , wherein said amber glass bottle has a weight percent of chromium of 0.015% to 0.10%.  
   
   
       25 . A glass bottle as in  claim 24 , wherein said amber glass bottle has a weight percent of chromium of 0.02% to 0.04%.