STM3163 Metal Part 1

What are the metallic elements used in metal packaging?

• Aluminum and steel

• Copper and cast iron

• Nickel and lead

• Stainless steel and tinplate

What is the main advantage of metal packaging over glass?

• Good heat transmission

• Resistance to physical damage

• Impervious to light and air

• All of the above

Which metal is commonly used for food contact purposes?

• Copper

• Stainless steel

• Lead

• Nickel

What is the main purpose of coating on tinplate?

• To increase malleability

• To prevent corrosion

• To enhance electrical conductivity

• To improve thermal conductivity

What is the main advantage of stainless steel in food packaging?

• High resilience

• Good thermal conductivity

• Ease of welding and casting

• All of the above

What is the most abundant metal in the earth's crust?

• Aluminum

• Steel

• Copper

• Nickel

What is the purpose of anodization in aluminum production?

• To increase corrosion resistance

• To reduce porosity of the oxide film

• To form a thin passivated film

• To improve thermal conductivity

What is the main disadvantage of aluminum in metal packaging?

• High energy requirement for production

• Low thermal conductivity

• Susceptibility to corrosion

• Limited malleability

What is the purpose of polymer coating on tinplate and TFS plate?

• To improve appearance

• To provide corrosion resistance

• To enhance moisture barrier

• All of the above