Plastics Molding & Manufacturing/Quiz Defects

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1 What is the primary slogan to keep in mind concerning troubleshooting?

	Don't repeat yourself.
	Keep it simple.
	Less is more.
	You are not gonna need it.

2 Where does one common source of troubleshooting assistance come from?

	Material Supplier.
	Process Engineers.
	Old-timers Operators.
	Production leader.

3 Not considering initial product design, what the most probable root causes of most injection-molded defects?

	Material.
	Men (Operator).
	Machine.
	Mold.

4 What three items should a troubleshooter apply to solving a defect problem?

	Eagle eyes.
	Objectivity.
	Simple analysis.
	Common sense.

5 What percentage (range) of the barrel capacity should be emptied every cycle?

	0 ~ 100%
	30 ~50 %
	40 ~ 60%
	20 ~ 80 %

6 How does the operator often contribute to defective molded parts?

	Eating at workstation
	Going for toilet breaks
	Inconsistent cycle times
	Doing housekeeping

7 What is the term used to describe a material that absorbs moisture from the atmosphere?

	Hydrophobic
	Hygroscopic

8

What happens to moisture in the material as it travels through the heating cylinder of the machine?

It turns into