Plastics processing method and apparatus
AssigneeColormatrix Holdings, Inc.
InventorMichael D. See
Life of this patent
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Abstract
A method for additive delivery during a plastics processing is disclosed. The method includes establishing a network of components in a control loop that uses a feedback method to drive at least one pump, thus enabling continuous, robust proportioning of additive in a difficult to control environment. The feedback method includes sending at least one signal from at least one sensor associated with a plastics melting machine to a controller, sending one or more signals from the controller to the at least one pump, monitoring the pressure in the at least one pump and sensing the position of an injection nozzle valve, and sending one or more signals to the injection nozzle valve instructing the valve to open or close.
Claims20
A method for delivery of liquid additives including a colorant during plastics processing wherein said method comprises:
- establishing a network of components in a control loop, wherein said control loop uses a feedback method to drive at least one pump, said feedback method comprising:
- sending at least one signal from at least one sensor on a plastics processing device to a controller;
- sending one or more signals from said controller to said at least one pump;
- monitoring the pressure in the at least one pump and sensing the position of an injection nozzle valve;
- and
- sending one or more signals to said injection nozzle valve instructing said valve to open or close.
A method for delivery of liquid additives including a colorant into plastics during plastics processing wherein said method comprises:
- establishing a network of components in a control loop, wherein said control loop uses a feedback method to drive at least one pump which is a dosing pump for dosing liquid additives into a plastics melting machine, said feedback method comprising:
- sending at least one signal from at least one sensor on said plastics melting machine to a controller;
- sending one or more signals from said controller to said at least one dosing pump;
- monitoring the pressure in the at least one dosing pump and sensing the position of an injection nozzle valve through which said pump is arranged to pump said liquid additives into said plastics processing machine;
- and
- sending one or more signals to said injection nozzle valve instructing said valve to open or close.
Dependencies are inferred from the claim text.