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WorksheetsMould Technology 24/06/2021
Total questions: 6
Worksheet time: 3mins
The ___________ is the part of a mould which provides a space in to which the ejector plate assembly can be fitted and operated.
Ejector grid
Bottom plate
Top plate
Ejector assembly
The sprue is pulled positively from the sprue bush by ______________.
Sprue bush
Blade ejection
Sprue pullers
Pin ejection
Polycarbonate (PC) shrinkage %
0.4 – 09
0.3 – 0.8
0.1 – 0.3
0.5 – 0.7
For the ejection of certain type of circular bosses on a mouldings ___________ types of ejectors are used.
Sleeve ejection
Valve ejection
Air ejection
Pin ejection
The ____________ ejection is the most common and simple type of ejection.
Sleeve ejection
Valve ejection
Air ejection
Pin ejection
After moulding, all plastic materials are caught by core because of ____________.
Temperature
Shrinkage
Additives
Fillers
