PRODUCTION OF RECURRENT HIGH BRIGHTNESS REFLECTING SHEET

摘要

PURPOSE: To provide a method of producing a recurrent high brightness reflecting sheet which is easy to produce and in which sufficient adhesive power between a surface film and a support resin sheet, durability to environmental factors or the like, organic solvent resistance and further heat resistance and strength of a joined part are sufficiently satisfied by using a resin sheet which has been previously cured as a support resin sheet and joining the support resin sheet and a cover film by heating and pressurizing work. ;CONSTITUTION: Curing in which reaction proceeds at room temperature, such as isocyanate curing, is done. A primer and/or support resin sheet 4 is used to make aging treatment at 30-40°C and curing reaction is substantially finished. Next, heating and press-fixing formation is made by an embossment roll 9 with a handle from the rear polyester film 6 side of the support resin sheet 4 on whose surface a cover film 1 is arranged. As the heating and press-fixing means, the sheet is passed through a heating roll whose surface temperature is 150-240°C, preferably 170-220°C.;COPYRIGHT: (C)1996,JPO