Research
How settings shape a part
Pressure, temperature and time decide whether a part comes out good. A small change can spoil it.
Industry source
Resin suppliers' processing guides for injection molding
Setting a press by test runs
Test runs that change one setting at a time find the range where a mold makes good parts.
Industry source
Plastics trade press: articles on setting an injection press by measured test runs
Scrap removed in published cases
Published cases report scrap down by 1 to 3 percent of the plastic, on molds with sensors.
Supplier's claim
Case studies published by suppliers of pressure sensors for molds and of technician training
Sensor and course prices
Sensors inside a mold must be bought for each mold. A course for one technician costs far less.
Supplier's claim
Suppliers of pressure sensors for molds: prices given on request
Training providers' listed course fees
Cost of a scrapped part
A scrapped part has used press time and labor too. We assume less than published figures do.
Our estimate
Published work on the cost of scrap in injection molding
Our estimate