Please download the dossier by clicking on the dossier button x
×

Method for Forming a Thermoplastic Composition that Contains a Plasticized Starch Polymer

  • US 20130157031A1
  • Filed: 12/20/2011
  • Published: 06/20/2013
  • Est. Priority Date: 12/20/2011
  • Status: Active Grant
First Claim
Patent Images

1. A method for forming a thermoplastic starch-based composition, the method comprising:

  • melt extruding a thermoplastic composition through a die to form an extrudate, wherein the thermoplastic composition comprises a starch polymer and plasticizer;

    subjecting the extrudate to at least one water-cooling stage in which the extrudate is contacted with water for a first period of time; and

    thereafter, subjecting the water-cooled extrudate to at least one air-cooling state in which the extrudate is contacted with air for a second period of time, wherein the air-cooled extrudate has a moisture content of from about 500 to about 20,000 parts per million.

View all claims
  • 4 Assignments
Timeline View
Assignment View
    ×
    ×