Lesson 5 Metal Containers 第5课 金属容器
Lesson 5 Metal Containers 第5课 金属容器
Background Steel is one of the older packaging materials. - Originally used for round, square, and rectangular boxes and canisters. - The old-fashioned appearance of a fabricated metal box is effectively used to create nostalgia for specialty and gift-type containers. - Sanitary food can, hand-soldered cylindrical metal cans started in the early l800s. - Metal cans’ advantages:
Background Steel is one of the older packaging materials. - Originally used for round, square, and rectangular boxes and canisters. - The old-fashioned appearance of a fabricated metal box is effectively used to create nostalgia for specialty and gift-type containers. - Sanitary food can, hand-soldered cylindrical metal cans started in the early l800s. - Metal cans’ advantages:
Background being relatively inexpensive capable of being thermally processed rigid easy to process on high-speed lines readily recyclable total barrier to gas and light an important means of delivering a shelf-stable product - Food cans: three-piece construction (Figure 5.1)
Background being relatively inexpensive capable of being thermally processed rigid easy to process on high-speed lines readily recyclable total barrier to gas and light an important means of delivering a shelf-stable product - Food cans: three-piece construction (Figure 5.1)
Background Figure 5.1 Three-piece (left) and two-piece(right) can construction
Background Figure 5.1 Three-piece (left) and two-piece(right) can construction
Background Shallow drawn containers with friction or slip covers - Two-piece shallow drawn cans with double-seamed (folded) ends - Two-piece cans (Figure 5.1). reduced metal usage improved appearance elimination of a possible leakage location more elaborate tooling required - Deeper draws and multiple draws and draw-and-iron process -Impact-extrusion: tin, lead, and Al; collapsible tubes (nearly Al); heavier gauge aluminum extrusions used for pressurized aerosol containers
Background Shallow drawn containers with friction or slip covers - Two-piece shallow drawn cans with double-seamed (folded) ends - Two-piece cans (Figure 5.1). reduced metal usage improved appearance elimination of a possible leakage location more elaborate tooling required - Deeper draws and multiple draws and draw-and-iron process -Impact-extrusion: tin, lead, and Al; collapsible tubes (nearly Al); heavier gauge aluminum extrusions used for pressurized aerosol containers