11A Flashcards
1
Q
by what means are containers shaped?
A
blow molding
2
Q
what are “tin” cans usually made out of?
A
steel
3
Q
what is used to coat the inside of cans?
A
epoxy resins (made of BPA)
4
Q
how many pieces comprise a traditional can?
A
3
5
Q
why are cans ribbed?
A
to survive retort pressures
6
Q
how do you make glass?
A
combine sand, soda ash, and limestone, then heat to 1500C then blow mold
7
Q
1° layer
A
polypropylene; food compatibility and sealing properties
8
Q
2° layer
A
aluminum foil; hermetic properties
9
Q
3° layer
A
nylon; injury resistance
10
Q
4° layer
A
polyester; heat resistance & printing
11
Q
what are pet bottles?
A
polyethylene terephthalate
12
Q
what defines how a food can be labelled/packaged?
A
consumer packaging and labeling act (canada)
13
Q
what makes something a substitute?
A
has a similar nutritional profile
