Patent ID: 6099285
Filing Date: 2000-08-08
Classification: B29C,B29K,Y10S

Abstract:
A controlling apparatus for controlling molding conditions for a molding apparatus obtaining a molded product by firmly fitting a molten thermoplastic resin onto a molding surface of a mold under a pressure lower than or equal to 100 kg/cm.sup.2 and curing, said molding apparatus comprising:a mold main body;a mold body on which said molding surface is defined; anda space defined between said mold main body and said mold body on the back side of said molding surface;said controlling apparatus comprising:means for controlling introduction and discharge of a fluid into and from said space;pressure control means for controlling pressure of said fluid in said space corresponding to pressure to be exerted onto said molding surface, wherein said pressure control means comprises first pressure control means for controlling a pressurized fluid supplied into said space; second pressure control means for controlling a pressurized fluid depressing said thermoplastic resin onto said molding surface supplied on said molding surface side; and pressure adjusting means for following the pressure of one of said pressurized fluids to the pressure of the other pressurized fluid;heat control means for controlling heating said molding surface from said space on the back side of said molding surface to a temperature higher than or equal to Vicat softening temperature (T) .degree.C. of said thermoplastic resin; andcooling control means for controlling cooling said molding surface from said space on the back side of said molding surface to a temperature lower than or equal to (Vicat softening temperature (T) of said thermoplastic resin -10) .degree.C.