Viscosity Sensor for Desiccant Polymer Injection Moulding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing injection-moulding machines lack effective quality control, particularly when processing desiccant-filled polymers, as they cannot reliably monitor the viscosity or melt-flow index of the polymer melt, which is crucial for ensuring the efficiency and distribution of desiccants in the polymer matrix.
Innovation Solution
Equipping conventional injection-moulding compounders with a sensor that determines the viscosity or melt-flow index of the desiccant-filled polymer melt, allowing for real-time monitoring and adjustment of the desiccant load to maintain desired viscosity or melt-flow index levels, thereby enabling effective quality control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional injection-moulding machines are used without viscosity sensors, then the device complexity is low, but the manufacturing precision and quality control capability deteriorate
Solution Approach 1:
The patent replaces mechanical quality control methods with a sensor-based measurement system that directly measures viscosity or melt-flow index of the polymer melt, enabling precise quality control without complex mechanical adjustments
Solution Approach 2:
The patent implements a feedback mechanism where sensor measurements of viscosity or melt-flow index are used to control the injection-moulding process, allowing real-time adjustments to maintain desired quality parameters
2Manufacturing precision
If real-time viscosity monitoring is implemented, then the manufacturing precision improves, but the device complexity and cost increase
Solution Approach 1:
The patent replaces complex mechanical viscosity control systems with direct sensor measurements, simplifying the overall device architecture while achieving precise viscosity monitoring and control
3Manufacturing precision
If desiccant load is adjusted to maintain viscosity, then the manufacturing precision improves, but the productivity may deteriorate due to additional control steps
Solution Approach 1:
The patent uses feedback control where viscosity or melt-flow index measurements automatically trigger desiccant load adjustments, maintaining consistent product quality without manual intervention or production interruptions
Solution Approach 2:
The system performs self-adjustment by automatically modifying desiccant load based on real-time viscosity measurements, eliminating the need for external quality control operations that would slow down production
Data Source
AI summary
Disclosed is an injection moulding machine, comprising an extruder for continuously producing a melt of a desiccant-filled polymer; at least one injection device fluidly connected with the extruder by a first conduit to receive melt and including an injection ram movable to a forward position for injection of melt into an injection mould and a rear position for introduction of melt into the injection device; characterized in that the injection moulding machine further comprises a sensor which allows determination of the viscosity or melt flow index of the desiccant-filled polymer. Further disclosed is a method of operating such a compounder-type injection moulding machine.