1. Advantages of Metal Recyclable
Good Barrier
Very Efficient PKG
Process
Most of the cans provide
EZ open
Foil&Metalized Film
2. Disadvantages to Metal Cost of setting up produc-
tion is high
Not flexible process when
considering size
3. How were cans originally made? By hand using tinplate
4. What method was used after the can was filled and Soldering
"cooked"?
5. What is the common name for the "crimping method" Double Seaming
to attach the two ends and soldering them?
6. What is the newer production of making cans that Two Piece Cans
eliminates the side seam?
7. How is the two piece can made? Drawing and Ironing
8. Drawing and Ironing process made the use of ______ Aluminum
possible since this metal cannot by soldered or welded
, PKG 221 Metal Exam
9. Two piece cans dominate the _________ industry beverage
10. Drawing and Ironing ______ the cost of can production lowers
11. What else lowers the cost of can making? Necking In
12. What are common metals used in pkg? Aluminum and Steel
13. Metals have a ______ strength-to-weight ratio high
14. Metals are/are not stiff? Are
15. Metals are/are not tough? Are
16. Metals are/are not hard? No (low)
17. Metals fail because they are ductile
18. Are metals corrosion resistant? No, but don't corrode too
quickly
19. Do metals have good thermal conductivity? Yes
20. Do metals conduct electricity? Yes, very well
21. Are metals permeable? No
22. The level of machinability, reusability and cost of met- HIGH
als are all
23. What ways can you change properties of materials? Alloying, cold work-
ing, drawing, annealing,
quenching
24. Temper and hardness are affected by the method of Rolling and annealing
______ and ______
, PKG 221 Metal Exam
25. Metal is work-hardened if rolled while cold, which pro- Stiffer
duces a ______ steel
26. Double-Reduced steel is rolled once, annealed and Cold-rolled
then ____-______ again
27. Steel temper and hardness are related values. Stiff harder
steel is _______ to work with and ____ ____ draw well. do not
28. When is double reduced steels used? when maximum stiffness
is required
29. Steel in the form of a low-carbon steel is known as blackplate
30. Blackplate is converted into ____ or ______(TFS) for con- tinplate or tin-free steel
tainer and closure manufacturing
31. Tinplate is produced by _______ blackplate with a thin electroplating(coating)
layer of tin
32. The tin is coated on ______ _______ of the plate to suit both sides
the internally packed product and the external envi-
ronment
33. Tin provides good _________ ________ properties to corrosion resisting
steel and is suitable for direct contact with veg-
gies/fruits/pop/beer/pet food/paints
34. For most foods an organic coating is applied to the metal taste
inside surfaces to provide an inert barrier b/w metal
and product to avoid "____ ____"
35.