Font size
WorksheetsExtrusion
Total questions: 12
Worksheet time: 15mins
Extrusion is a......
Batch process
Continuous process
Tick the following products formed through extrusion
Pipes
Profiles
Detergent bottles
Car head light lenses
Name the parts of extruder. Write your answer as A:name of the part, B: name of the part (a)
ABC Sdn. Bhd. is collecting single used polyethylene films and wants to remelted and extrude it into pellets to be sold to compounders. What type of machine they can can use?
Single screw extruder
Twin screw extruder
Injection moulding
XYZ Sdn Bhd wants to produce wood plastic composite with polypropylene and wood fibre for swimming pool floor decking. What machine they can use.
Single screw extruder
Twin screw extruder
Injection moulding
Choose the correct statements.
Single screw extruder has good self cleaning ability
Less energy is consumed in twin screw extruder operation
Feeding of powder polymers are easier in single screw extruder
Twin screw extruder is more suitable for PVC
SSS Sdn Bhd wan compound polystyrene with 40 wt% silica filler, 10 wt% plasticizer, colour pigments and 20 wt% impact modifiers. They decided to use twin screw extruder. Which of the following type of twin screw extruder they can use?
Co-rotating twin screw extruder
Counter rotating twin screw extruder
Select the function of screen pack in extruder.
Filter the un-gelled material from entering die
Increase the flow of polymer melt into the die
Improve mixing of melt before entering die
Increase the temperature of the melt before entering the die
Which type of screw is used for compounding of Nylon with calcium carbonate filler?
Basic Metering Screw
Maddock Metering Screw
Two Stage Venting Screw
Which of the following statements are TRUE?
The deepest channel depth is in the feed zone
The channel depth is narrowing in the metering zone
The channel depth is narrowing in the compression zone
The channel depth is 0.5 of root diameter
MNO Sdn Bhd is processing Polycarbonate polymer. Which of the following is the correct design of the screw?
Shorter feed zone and longer compression zone
Longer feed zone and shorter compression zone
Which of the following L:D ratio are accurate.
PVC 24:1
PC 30:1
PC 24:1
PVC 30:1
