Industrial Techniques Plastic

How many times can thermosetting plastics be heated and shaped?

• Once.

• Twice.

• Three times.

• Many times.

Where do plastics come from?

• Plastic Factories

• Volcanoes

• Minerals

• Natural gases & Crude Oil

What are the different types of plastics?

• Hard plastics & Soft plastics

• Thermoplastics & Hard plastics

• Thermoplastics & Thermosetting

• Thermosetting & Soft Plastics

Thermoplastics are ..............

• Plastics that can be reshaped by heating once

• Plastics that give out thermal energy

• Plastics that that can be reshaped many times

• Plastics that cannot be recycled

Some examples of Thermosetting plastics are ................

• LDPE, Polyester Resin & Melamine

• Melamine, Urea Folmeldehyde & Polyester Resin

• Phenol Formeldehyde, Nylon & HDPE

• Melamine & Acrylic

What are these safety goggles made out of?

• Nylon

• Polythene

• HDPE

• Acrylic

What are these bottle caps made out of?

• Melamine

• HDPE

• Polypropylene

• Acrylic

What are these folders made out of?

• Nylon

• Polythene

• HDPE

• LDPE

Identify the group of plastics that hardens under pressure, is permanently set and cannot be reshaped.

Identify ALL the advantages of plastics.

• Combustible

• Light weight

• Produce toxic fumes

• Non-renewable

• Corrosion resistant