Patents Assigned to Albert Denis S.A.
  • Method for heat control of hot runner molds
    Patent number: 4707310
    Abstract: A method of controlling the heating of hot runner molds for injection molding of thermoplastic objects is disclosed, whereby the mold cavities (11, 12) receive the material to be molded via channels or runners divided into five heating zones (I through V), the temperature of each zone being controlled by means of an electric heating element (EC) associated with a thermocouple. In the event of failure of one zone's thermocouple, heat control is continued in said zone according to the power applied to the heating element of an adjacent zone.
    Type: Grant
    Filed: May 10, 1985
    Date of Patent: November 17, 1987
    Assignee: Albert Denis S.A.
    Inventor: Pierre Debeaud