Method for the selective closing of the pores of the surface of thermo-plastic porous material

  • US 5,858,298 A
  • Filed: 07/23/1997
  • Issued: 01/12/1999
  • Est. Priority Date: 01/24/1995
  • Status: Expired due to Term
First Claim
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1. A method for closing pores located in selected areas of the surface of a thermo-plastic porous material, comprising the steps of heating said selected areas by light radiation and compressing said surface using a smooth transparent body simultaneous with said heating.

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