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Aluminum closure cap raw materials

Aluminum closure cap is a common cap used for packaging in the fields of bottled beverages, cosmetics, medicines and vial sealing. The main raw materials for aluminum caps are aluminum plates and coatings. Aluminum alloys used for cap raw materials are often 8011, 3105, 3003, etc. After rolling, the tolerance is very small, more caps can be produced per ton of aluminum plate, and high-speed, multi-cavity presses can be operated uninterruptedly. Its high strength, good formability, low earing rate, good deep drawing performance and printable surface make it an ideal choice for anti-theft bottle caps and vial sealing.

Aluminum cap raw materials.jpg

Aluminum closure cap specifications:

Dimensions
ParameterRangeStandardTolerance
Thickness (mm)0.18 - 0.250.18, 0.20+0.005/-0.01
Width (mm)50-1250
867, 762, 584+2, -0
Length (mm)400 -1000
-+2, -0
Diagonal difference for sheet (mm)2 max

Coil sizes (mm)OD: 1450 max
ID: 203, 250, 508


Coil density (kg/mm)3.5 max

Offer for thickness and width outside the range may be quoted on specific request
Flatness
Less than 20 I units (typical)
For example:
::20 I unit means; in length of 1 meter
::1 wave sum of rises 5 mm, avg. rise of each wave 5.00 mm
::4 wave sum of rises 8 mm, avg. rise of each wave 2.00 mm
::6 wave sum of rises 8 mm, avg. rise of each wave 1.30 mm
Earring
Typical value: < 2 per cent for >=0.18 mm thickness
Mechanical properties
Alloy (AA)TemperUTS (mpa)% E (min)
(at 50 mm
gauge length)
MinMax
3003H141251701
H161652051
3105H141502001
8011O8.51215
H14125
1701
H24125
160
1
Chemical composition
Alloy (%)AA 3003AA 3105AA 8011
Fe0.700.700.6-1.0
Si
0.60
0.600.5-0.9
Mg0.05
0.20-0.80
0.05
Mn1.00 — 1.500.3-0.80.20
Cu0.05 — 0.200.300.10
Zn
0.10
0.250.10
Ti
0.05
0.10
0.08
Cr0.050.10
0.05
Each (others)0.050.050.05
Total (others)0.15
0.150.15
AlRemainderRemainderRemainder
Single number indicates maximum content

Cap raw material delivery packaging:

Sheet: The sheet is placed in a wooden box with a slide rail along the length of the sheet. The sheet is wrapped with high-density polyethylene, and the top and bottom of the pile are covered with cardboard. The iron hoop is wrapped along the length of the sheet. Silica gel bags are placed in the box to prevent moisture.

Alternatively, wrap them in poly-laminated burlap or polyethylene, tie with iron bands and clamps, and place on wooden pallets. Use edge protectors and wrap the sheets with protective thermoplastic sheets.

Rolls: Rolls are placed eye-to-sky or eye-to-wall on wooden pallets, wrapped with high-density polyethylene fabric and cardboard, and tied with iron bands. Silica gel packs are used for moisture protection.

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