Patent ID: 6045890
Filing Date: 2000-04-04
Classification: B29C,B29L,E06B,Y10T

Abstract:
A method for forming a light-control panel comprising:a) providing an opaque sheet having a pair of longitudinal margins, a first light-transmitting sheet and a second light-transmitting sheet, each light-transmitting sheet having a pair of longitudinal margins;b) forming a web by welding one longitudinal margin of the opaque sheet to one longitudinal margin of the first light-transmitting sheet, and welding together the other longitudinal margin of the opaque sheet to one longitudinal margin of the second light-transmitting sheet;c) laterally offsetting one section of the web from a previously formed section of the web, each section including a portion of the welded together opaque and first and second light-transmitting sheets;d) laminating the one section of the web to the previous section of the web while the sections of the web are laterally offset; ande) repeating steps c and d.