Moulding trial, economics and full-scale production
When filling a new or unfamiliar mould for the first time, where shot size is unknown, our quality assurance technicians start with a small shot weight and fill the mould gradually until 95 to 99% full. Once this stage is reached a small amount of holding pressure is applied and holding time increased until gate freeze off (solidification time) has occurred.
Production Economics
Gate solidification time is an important as it determines the moulding cycle time, which is an important issue in the economics of the production process. This holding pressure is increased until the parts are free of sinks and the required part weight has been achieved.
Cavity Pressure Sensors
These methods can be supported by installing cavity pressure sensors that measure cavity pressure as a function of time to provide an indication of the filling profile of the cavity. Our modern monitoring systems can save a reference curve of the cavity pressure which allows our engineers to reproduce the same part quality on another moulding machine within a short setup time.
Inspection, Testing and Full-Scale Production
At this stage parts are inspected and tested against specific criteria by our quality assurance department. Once the parts have passed these checks and cleared as meeting our clients requirements, The setting for production are recorded for our engineers in the moulding department to follow in the future and full-scale production is ready to begin.