PKG 221 PRACTICE EXAM TEST UPDATED QUESTIONS
AND ANSWERS GRADED A+
✔✔what does beading do? - ✔✔provides additional hoop strength to prevent implosion
during subsequent heat process and resistance to internal pressure
✔✔cons of beading - ✔✔-more material
-poor labeling
-reduces compressions strength
✔✔2 piece can processes - ✔✔-draw
-draw/redraw
-draw/iron
-hydroforming
✔✔can blanks for shallow draw be decorated before drawing? - ✔✔yes
✔✔single draw process also makes... - ✔✔folded aluminum baking trays, take away
containers, shallow trays
✔✔draw and redraw - ✔✔cans with height = to are greater than diameter require
second draw
✔✔why are carbonated beverage cans made by draw and iron process? - ✔✔-requires
least amount of material
-fast process
✔✔draw and iron process - ✔✔-blank disk drawn into wide cup
-cup is redrawn to finished can diameter and pushed through series of iron rings (each
getting smaller)
-necking operation follows to reduce the diameter of body opening
✔✔hydroforming - ✔✔-MAKES 2 PIECE CANS TALLER THAN DRD AND DI
-does not start out as drawn cup
-uses high water pressure
-uses thicker gauge metal
-deep draws are possible due to no friction
✔✔metalized paper/film - ✔✔-INITIALLY DECORATIVE/AESTHETIC
-IMPROVES GAS/LIGHT BARRIER PROPERTIES
-provides heat/ light reflectance
-electrical conductivity
-label stock market for metalized paper
-metalized plastic = usually snacks
-used in laminated structures
, -NO DEADFOLD PROPERTIES
✔✔end making - ✔✔-constructed from Al, TFS, Tinplate
-Al, TFS coated on both sides while in sheet form
-optional w tinplate
-top can be full aperture
✔✔why are there beads in center panel of can end - ✔✔for flexibility during
heating/cooling cycle (retorting)
✔✔stay on tab - ✔✔stays on can (beverages)
✔✔double seaming is the ... - ✔✔most important type of closure used for metal
containers
✔✔double seaming process - ✔✔curl and flange meet and complete (2 operations)
✔✔requirements of coatings: - ✔✔-inert barrier
-non toxic
-no flavor
-resists deformation
-flexible
-spreads evenly
-adhesive
✔✔impact extrusion tube materials - ✔✔-tin, lead, aluminum
✔✔what are aerosols? - ✔✔products in pressurized package with valve for product
release
-ex: perfumes, hair spray
✔✔what was first aerosol application? - ✔✔bug spray in military
✔✔aerosol two phases - ✔✔liquid and vapor
✔✔liquid phase contains what? - ✔✔product to be expelled
✔✔the vapor phase is... - ✔✔increased pressure and will force product up the dip tube
to expel
✔✔contents of aerosol percentages - ✔✔75-92.5% product
✔✔well designed aerosol delivers what percent product? - ✔✔95%
AND ANSWERS GRADED A+
✔✔what does beading do? - ✔✔provides additional hoop strength to prevent implosion
during subsequent heat process and resistance to internal pressure
✔✔cons of beading - ✔✔-more material
-poor labeling
-reduces compressions strength
✔✔2 piece can processes - ✔✔-draw
-draw/redraw
-draw/iron
-hydroforming
✔✔can blanks for shallow draw be decorated before drawing? - ✔✔yes
✔✔single draw process also makes... - ✔✔folded aluminum baking trays, take away
containers, shallow trays
✔✔draw and redraw - ✔✔cans with height = to are greater than diameter require
second draw
✔✔why are carbonated beverage cans made by draw and iron process? - ✔✔-requires
least amount of material
-fast process
✔✔draw and iron process - ✔✔-blank disk drawn into wide cup
-cup is redrawn to finished can diameter and pushed through series of iron rings (each
getting smaller)
-necking operation follows to reduce the diameter of body opening
✔✔hydroforming - ✔✔-MAKES 2 PIECE CANS TALLER THAN DRD AND DI
-does not start out as drawn cup
-uses high water pressure
-uses thicker gauge metal
-deep draws are possible due to no friction
✔✔metalized paper/film - ✔✔-INITIALLY DECORATIVE/AESTHETIC
-IMPROVES GAS/LIGHT BARRIER PROPERTIES
-provides heat/ light reflectance
-electrical conductivity
-label stock market for metalized paper
-metalized plastic = usually snacks
-used in laminated structures
, -NO DEADFOLD PROPERTIES
✔✔end making - ✔✔-constructed from Al, TFS, Tinplate
-Al, TFS coated on both sides while in sheet form
-optional w tinplate
-top can be full aperture
✔✔why are there beads in center panel of can end - ✔✔for flexibility during
heating/cooling cycle (retorting)
✔✔stay on tab - ✔✔stays on can (beverages)
✔✔double seaming is the ... - ✔✔most important type of closure used for metal
containers
✔✔double seaming process - ✔✔curl and flange meet and complete (2 operations)
✔✔requirements of coatings: - ✔✔-inert barrier
-non toxic
-no flavor
-resists deformation
-flexible
-spreads evenly
-adhesive
✔✔impact extrusion tube materials - ✔✔-tin, lead, aluminum
✔✔what are aerosols? - ✔✔products in pressurized package with valve for product
release
-ex: perfumes, hair spray
✔✔what was first aerosol application? - ✔✔bug spray in military
✔✔aerosol two phases - ✔✔liquid and vapor
✔✔liquid phase contains what? - ✔✔product to be expelled
✔✔the vapor phase is... - ✔✔increased pressure and will force product up the dip tube
to expel
✔✔contents of aerosol percentages - ✔✔75-92.5% product
✔✔well designed aerosol delivers what percent product? - ✔✔95%
