Thermoforming

What is the typical sheet thickness used in heavy gauge thermoforming?

• Less than 1.0 mm

• 1.5 - 12.7 mm

• More than 20 mm

• 0.2 - 1.0 mm

Which of the following is NOT a method of thermoforming?

• Vacuum forming

• Pressure forming

• Injection forming

• Twin sheet forming

Which of the following materials is an example of a semi-crystalline thermoplastic?

• ABS

• Polycarbonate

• Polyethylene (PE)

• Acrylic

Which issue occurs due to uneven cooling of a formed part?

• Webbing

• Part thickness inconsistency

• Warpage

• Sink mark

What is a key limitation of thermoforming compared to injection moulding?

• High tooling cost

• Suitable for all polymers

• Produces complex 3D shapes

• Limited to thin-walled parts

Thermoforming can be used for both thermoplastics and thermosetting plastics.

• True

• False

Vacuum forming allows for the highest level of detail and sharp corners.

• True

• False

Twin sheet forming can produce hollow parts like air ducts and tanks.

• True

• False

Wood moulds are ideal for long-term, high-volume production.

• True

• False

Amorphous thermoplastics are easier to thermoform than semi-crystalline ones.

• True

• False