Biodegradable blister package

Abstract

A biodegradable blister package comprising polylactic acid resin is disclosed. The blister package includes a blister portion made of a biodegradable material and a clamshell portion having a first half and a second half, wherein the blister portion is at least partially between the first and the second halves of the clamshell portion. The clamshell portion comprises a substrate material including at least one layer of paperboard and at least one layer of polylactic acid adhered to the paperboard layer.

1 . A blister package, including:
 (a) a blister portion comprising a biodegradable material; and   (b) a clamshell made of a substrate comprising:
 (i) a layer of paperboard having a first surface and a second surface, and 
 (ii) a layer of polylactic acid on the first surface of the paperboard layer, 
   wherein the clamshell portion has a first half and a second half, and the blister portion is at least partially between the first and the second halves of the clamshell portion.   
   
   
       2 . The blister package of  claim 1 , wherein the substrate comprises a member selected from the group consisting of solid bleached sulfate (SBS), coated natural kraft, folding boxboard, recycled board, unbleached board, and combinations thereof. 
   
   
       3 . The blister package of  claim 1 , wherein the substrate further includes a coating layer on the second surface of the paperboard layer. 
   
   
       4 . The blister package of  claim 3 , wherein the coating layer comprises a member selected from the group consisting of clay, titanium dioxide, calcium carbonate, and combinations thereof. 
   
   
       5 . The blister package of  claim 1 , wherein the substrate further includes a coating layer on the layer of polylactic acid. 
   
   
       6 . The blister package of  claim 5 , wherein the coating layer comprises a member selected from the group consisting of clay, titanium dioxide, calcium carbonate, and combinations thereof. 
   
   
       7 . The blister package of  claim 1 , wherein the substrate further includes an adhesive layer. 
   
   
       8 . The blister package of  claim 7 , wherein the adhesive layer comprises polyvinyl alcohol. 
   
   
       9 . The blister package of  claim 1 , wherein the substrate further includes an adhesive layer between the first surface of the paperboard layer and the layer of polylactic acid. 
   
   
       10 . The blister package of  claim 9 , wherein the adhesive layer comprises polyvinyl alcohol. 
   
   
       11 . The blister package of  claim 1 , wherein the first and second halves of the clamshell portion are connected at a score line. 
   
   
       12 . The blister package of  claim 1 , wherein the first and second halves of the clamshell portion include slots aligned to form a single slot when the clamshell portion is folded in half at the score line. 
   
   
       13 . The blister package of  claim 1 , wherein the first half of the clamshell portion includes an opening or cut out portion to receive the blister portion there through. 
   
   
       14 . The blister package of  claim 1 , wherein the blister portion includes a receiving portion and a flange. 
   
   
       15 . The blister package of  claim 1 , wherein the biodegradable material for the blister portion includes polylactic acid. 
   
   
       16 . The blister package of  claim 1 , wherein the biodegradable material for the blister portion includes a material comprising:
 (i) a layer of paperboard having a first surface and a second surface, and   (ii) a layer of polylactic acid on the first surface of the paperboard layer.