ASSEMBLY Magazine Quiz Answers: Dispensing

Thank you for taking the dispensing quiz on ASSEMBLY Magazine. Be sure to check out our newest quiz next month.

Here are the answers!

 

1. The thickness of an adhesive is measured in centipoise. Which of the following centipoise figures best represents a typical cyanoacrylate adhesive?

Answer: a. 50.

While some gap-filling formulations are 2,000 centipoise or more, cyanoacrylate adhesives are typically thin—well under 200 centipoise.

 

2. When dispensing a UV-cure adhesive, which of the following would not be recommended?

Answer: c. Transparent fluid line.

UV-cure adhesives cure when exposed to ultraviolet light. If the fluid supply line is made from a transparent material, the adhesive could cure inside the line.

 

3. If an adhesive is thixotropic, it…

Answer: c. gets thinner when agitated.

Thixotropic fluids are thick under static conditions but become thinner when agitated.

 

4. What’s the smallest amount of fluid that can be dispensed with a jetting valve?

Answer: d. nanoliter.

A noncontact jetting valve features a needle that moves back and forth at speeds up to 500 hertz per second. It can dispense nanoliter-size dots.

 

Nordson EFD is one of the world’s leading suppliers of dispensing technology. What does EFD stand for?

Answer: b. Electron Fusion Devices.

Nordson EFD actually began as a supplier of equipment for jewelry manufacturing. In 1963, company founder John Carter developed an electron fusion welding process that enabled jewelers to quickly join small metal parts. Several years later, Carter looked to expand his business by creating a machine jewelers could use to precisely dispense metal brazing pastes. The rest, as they say, is history.

 

 

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