FREMGANGSM}TE FOR FREMSTILLING AV ORIENTERTE ARK AV TERMOPLASTHARPIKS BESKYTTET MOT P}VIRKNING AV ULTRAFIOLETT LYS

摘要

P a. the invention relates to the production of feuilla oriented in the thermoplastic resin by extrusion of a sheet, the thermal conditioning of the sheet at a temperature of orientation by drawing, the stretching of the sheet to be packaged and cooling under tension. / p & & p & b. the method consists in applying on the faces of the sheet a solution of anti - uv in a solvent, exerting an action on the resin before swelling of the drawing step, so as to protect these faces against ultraviolet radiation. / p & & p & c. the process is used for the production of optionally corrugated feuilla oriented in a resin based on polyvinyl chloride, having high mechanical properties and durable. / p