Patent ID: 6908295
Filing Date: 2005-06-21
Classification: B23K,B29C,H01L

Abstract:
1. An apparatus for continuously forming thermoplastic products having precision microstructured surfaces thereon, comprising: a continuous double band press having upper and lower primary bands providing a substantially planar region therebetween, at least one of said bands being provided with a tool surface having the inverse topography of the precision microstructured surface to be formed, the inverse topography being sized to provide embossing depth of less than 1000 microns; means for continuously feeding a thermoplastic material through said press and between said bands; means for heating said material to its embossing temperature T means for applying sufficient pressure to said bands to cause the precise engagement of said heated thermoplastic material with said bands and said tool surface to emboss said material with said precise microstructured pattern; and means for cooling said material while maintaining pressure on said material, and while said material is moving through said press.