3D Product Materials and Finishing 3

Question 1

What is 'glass-filled nylon' and why is it used in engineering product components?

Accepted Answer

Nylon reinforced with short glass fibers, significantly increasing stiffness, strength, and heat resistance

Answer

A transparent nylon variant for optical parts

Answer

A recycled nylon made from glass bottles

Answer

A nylon coating applied over glass substrates

Question 2

What is 'PVD (Physical Vapor Deposition)' coating used for on product surfaces?

Accepted Answer

Vacuum-depositing extremely thin, hard metal films for wear resistance and decorative metallic finishes

Answer

Powder coating applied under vacuum for better adhesion

Answer

A plastic vapor-forming process for complex shapes

Answer

An anti-UV protective coat applied via vapor

Question 3

What is the significance of 'IP ratings' (like IP67) for consumer product design?

Accepted Answer

They certify the product's level of protection against solid particle ingress and water ingress per IEC 60529

Answer

They indicate the product's internet connectivity protocol version

Answer

They represent the product's intellectual property patent status

Answer

They measure the internal pressure rating of a sealed vessel

Question 4

What is 'pad printing' and when is it used in consumer product manufacturing?

Accepted Answer

A transfer printing method using a silicone pad to apply ink to irregular 3D surfaces

Answer

Printing graphics directly onto flat packaging pads

Answer

Screen printing on flexible rubber sheets

Answer

UV curing ink jets onto curved product surfaces

Question 5

What is 'in-mold labeling' (IML) in plastic part manufacturing?

Accepted Answer

Inserting a pre-printed film into the mold so it fuses permanently with the part during injection molding

Answer

Laser engraving labels into a mold tool

Answer

Screen printing onto molded parts after ejection

Answer

A digital label applied with hot-stamp foil

Question 6

What is 'CNC machining' and in which stage of product development is it most commonly used?

Accepted Answer

Computer-controlled subtractive manufacturing that removes material to create parts; commonly used for prototyping and low-volume production

Answer

A 3D printing technology for metal parts

Answer

A laser cutting process for sheet metal only

Answer

A rapid tooling process for injection mold creation