Chalco's aluminum sheets for closures comply with US FDA and European directives regarding to use of aluminum which comes into contact with food, drinks, cosmetics and pharmaceuticals.
Chalco Aluminum is the biggest aluminum closure sheets provider in China, have full solutions for various bottle cap needs, such as aluminum screw caps, ROPP caps, vial seals, Omnia cap, twist off cap, EOE end and cosmetic packaging.
With experienced technical engineers and superb rolling technology, our aluminum alloy closure sheets are suitable for extremely deep drawn and highly decorated closures. By using our products, our closure makers clients could achieve a wide variety of painted finishes in their market and we have an excellent reputation as their reliable, flexible and innovative partner.
Compare with 8011 aluminum closure sheet, 3105 H14 H16 Aluminium closure sheet has enough strength, so it is stronger enough to bear the gas pressure. It is widely used for making screw cap for carbonated drinks and mineral waters.
We could treat 3105 Aluminum screw cap sheet with phosphoric acid chromated and DOS coated, printed with different colors on the basis of our plain sheet.
We control the materials composition, rolling temperature and time, and annealing temperature to product optimal materials to meet client's performance needs, such as its opening capability and earring rate.
With our good flatness and squareness, the issues of color gapping, unevenness or print misalignment during printing can be prevented.
Specification:
| Alloy | 3105 |
| Temper | H14, H16, H44, H46 |
| Thickness | 0.2-0.25mm |
| Width | 500-1000mm |
| Length | 500-1000mm |
Surface type:
Typical closure application: closures for carbonated drinks & mineral waters
Aluminum closure sheet's greatest qualities are drawability and lacquer adhesion, guaranteeing the highest quality printing of drawings and designs. The most common alloy for closures is 8011 alloy, which has good formability, good earring rate and flatness, so as to make sure the long cap deep drawing. It often used as ROPP caps for wine bottles, and other beverage bottles.
Advantages:
Specification:
| Alloy | 8011 |
| Temper | H14, H16, H44, H46 |
| Thickness | 0.2-0.25mm |
| Width | 500-1000mm |
| Length | 500-1000mm |
Surface type:
Typical closure application: Ropp caps, PP cap, roll on pilfer proof cap, aluminum pilfer-proof cap, pilfer proof closure, aluminum bottle cap, aluminum screw cap, tear off caps, flip off caps.
Aluminum vial seals were normally made by 1060, then to be anodized so as to protect its surface. However anodizing process shall cause water pollution, then such technology is slowly being phased out.
Nowadays aluminum vial cap is normally use 8011 H16/H14 to make it, then lacquered by epoxy clear varnish, or lacquered in different colors, normally in yellow color, golden color, red color, blue color and black color.
Advantages:
Specification:
| Alloy | 8011 H16/H14 |
| Thickness | 0.15-0.30mm |
| Width | 30mm -1000mm |
| Inner diameter | Paper core 76mm, 152mm and 80mm without core. |
| Outer diameter | 500-800mm |
| Packing | Wooden case, wooden pallet if request. |
Surface:
Coating quality:
Boiling Resistant: Boiling 121 degrees for half an hour, the paint does not fall off, do not change color.
Resistance to acetone and mercuric chloride: repeatedly wiping 20 times without significant stripping.
Typical closure application:
Vial aluminum seals, aluminum tear off seal, aluminum flip-off vial seals, pharmaceutical caps, pull-off aluminum cap, aluminum seal cap for injection vial, vaccine bottle caps, pull ring tear off aluminum caps, pharmaceutical injection vial cap, ring-pull aluminum cap, medicine vial cap.
The Omnia aluminum cap is relatively shallow, and is generally made of one time annealed 8011 cast rolled aluminum. In order to maintain good seal quality, 8011 aluminum sheet is varnish coated on the inner surface to maintain the perfect combination of the omina cap and the inner plastic pad.
Chemical Composition: alloy type 8011 H16 According to EN573-3
Size and deviations from the size
| Thickness tolerance | -0+0.5mm |
| Width tolerance | -0+0.5mm |
| Length tolerance | -0+0.5mm |
Deviations of the forms/shapes:
| Deviations of the straight for hardness of the longitudinal border | max 1mm |
| Deviation of flatness | max 4mm |
| Rectangularity: max difference in the diagonals | 3mm |
| Dislocation between the sheets | max 2mm |
Surface of the sheets
Available Surface types
Mechanical data:
| Resistance to stretching Rm | Min 180 Mpa Max 220 Mpa |
| Yield strength Rpop | Min 145Mpa |
| Elongation | Min 2% |
Packaging
Wooden case packing could guarantee the quality of the materials during transportation and storage.
All stacks of the aluminum sheets are bound firmly in nylon, and respectively fixed in wooden cases.
The twist off lid is usually made by tinplate before. However the tinplate is easy to rust, which has bad visual effect and may have an impact on the food. Therefore, many cap makers began to use aluminum caps. But this kind of lid has very strong claws, so that it can be tightly buckled with the glass bottle. So the aluminum material needs to have strong strength. The 5182 aluminum twist off lid sheet developed by Chalco Aluminum, has good strength and formability, ensures high sealing performance.
Specs of twist off lid sheet:
| Alloy | 8011 5182 |
| Temper | H14, H16 |
| Thickness | 0.20-0.25mm |
| Width | 500-1000mm |
| Length | 500-1000mm |
Surface type:
Typical closure application: Aluminum twist off lid
Clear lacquer aluminum sheet for aluminum easy peel off end lid top, is organic coating on both sides, which is ideal materials for dry and non-processed foods.
The main applications are the following: milk powder and infant formula, instant coffee and tea, snacks and nuts, non-food items.
Advantages:
Specification:
| Alloy | 8011 5052 5182 |
| Temper | H16/H14 /H19 |
| Thickness | 0.20-0.30mm |
| Length | 800-1000mm |
| Width | 800mm -1000mm |
| Packing | Wooden case, wooden pallet if request. |
Clear lacquer Aluminum foil sheet Coating:
1. Both sides clear epoxy varnish
2. One side clear epoxy varnish, the other side color coated.
Clear lacquer Aluminum foil sheet Coating thickness:
Golden color /yellow color: both sides coating 5-6g/m2, one side coating 2-3g/m2.
White/red/black/blue color: Both sides coating 10-13g/m2.
Clear lacquer Aluminum foil sheet Coating quality:
Boiling Resistant: Boiling 121 degrees for half an hour, the paint does not fall off, do not change color.
Resistance to acetone and mercuric chloride: repeatedly wiping 20 times without significant stripping
Typical closure application: Aluminum easy open ends, easy open can lid, easy open can parts, aluminum ring pull.
Cosmetics packaging applications are expected to be creative and elegant. Coils and sheets with high surface quality and finishing properties are essential for cosmetic packaging. Chalco is the industry leader, providing you with high-quality products that combine optical, tactile, functional characteristics with lightweight characteristics, recyclability, optimized processing.
Advantages:
Specs:
Alloy1060, 1070, 1080, 5005, 5657TemperH22, H24, H26, H18, H19Thickness0.20-2.0mmWidth20-1250mmLength500-2000mm, or coil typeSurface type:
Typical closure application:
cosmetic packaging
We provided you with more than good offer, and more than just aluminum closure stock. By harnessing our expertise and know-how, we help you deliver solutions with unique value to support the future of your business. Our service includes design and feasibility studies, laboratory services, new product development, problem solving and on-site support.
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