ENHANCED EXPANDED POLYSTYRENE FOAM INSULATION

  • US 20100304075A1
  • Filed: 05/28/2009
  • Published: 12/02/2010
  • Est. Priority Date: 05/28/2009
  • Status: Abandoned Application
First Claim
Patent Images

1. An un-aged or partially aged polymeric bead with internal closed cells which has been expanded from 10 to 50 times the size of the unexpanded bead, having an internal pressure in the cells less than 600 millibars, which has been coated with an air impervious layer having a thickness from 3 to 200 microns.

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