A method of manufacturing a laminated transparent substrate comprising the steps of sandwiching between transparent glass substrates ionomer resin formed by bridging ethylenemetacryl acid copolymars with sodium ions, to form a laminated structure and sealing it in a reduced pressure atmosphere; applying...http://www.google.es/patents/US5344513?utm_source=gb-gplus-sharePatente US5344513 - Method of manufacturing laminated transparent substrate having birefringence
Method of manufacturing laminated transparent substrate having birefringence
