Contact Sales on +44 (0)1472 240940
Berlin Packaging expands its presence in EMEA with the acquisition of BlueSky.
Contact Sales on +44 (0)1472 240940
Berlin Packaging expands its presence in EMEA with the acquisition of BlueSky.
They are used across personal care, beauty, home care, beverage, spirits, olive oil, wellness and refill-led packaging projects. For many brands, aluminium offers a strong combination of shelf standout, practical handling and custom decoration potential.
But how are aluminium bottles actually made?
The process is more technical than many buyers realise. An aluminium bottle starts as a small disc of aluminium and goes through forming, trimming, cleaning, internal coating, decoration, necking and inspection before it is ready to be filled.
Understanding this process can help brands make better decisions about bottle choice, decoration, closure compatibility, lead times and product suitability.
For packaging buyers, how a bottle is made is not just a production detail.
The manufacturing process affects:
This is especially important for aluminium bottles because the bottle itself often becomes a major part of the brand identity.
Unlike clear packaging, where the product inside carries much of the visual appeal, aluminium gives brands a complete surface to decorate. That means the forming, coating and printing stages all matter.
Aluminium bottle production begins with a small disc of aluminium called a slug.
This slug is the raw starting point for the bottle. It may be made using a mix of virgin and recycled aluminium, depending on the supplier and specification.
At this stage, it does not look like packaging. But this small piece of aluminium will be formed into the main bottle body.
One of the key benefits of this process is that the bottle body is created as a seamless container, rather than being made from separate side walls joined together.
The aluminium slug is lubricated and placed into a press.
It is then forced through a die using pressure. This process is known as cold extrusion or impact extrusion.
During cold extrusion, the aluminium is shaped into a hollow cylindrical body. This creates the main bottle form, including the side walls and base.
This is one of the reasons aluminium bottles can feel strong while remaining lightweight.
For buyers, this stage matters because it influences bottle strength, wall consistency and the finished shape available for branding.
After extrusion, the top edge of the bottle body is trimmed.
This creates a clean, even opening ready for later processing.
Trimming is important because the neck and closure area of the bottle must be accurate. If the opening is uneven or poorly finished, it can affect later stages such as necking, capping and sealing.
For brand owners and fillers, the neck finish is one of the most important parts of the bottle. It affects closure fit, torque, leakage risk and the final user experience.
The formed bottles are then washed and dried.
This removes oils, lubricants or residues from the forming process and prepares the surface for coating.
Cleaning is important because coatings and decoration need a properly prepared surface. If the bottle is not clean, it can affect internal lacquer adhesion, external coating quality or print performance.
At this stage, the bottle is formed, but it is not yet ready to hold product. It first needs an internal protective coating.
Most aluminium bottles require an internal lacquer.
The lacquer is a protective coating applied to the inside of the bottle. It helps separate the product from the aluminium and supports product compatibility.
This is one of the most important stages in aluminium bottle production.
Internal lacquer matters for products such as:
The right lacquer depends on the product, formulation, filling process, storage conditions and intended market.
Some aluminium bottles may use BPA-NI lacquer, meaning Bisphenol A non-intent, particularly where food, beverage, personal care or retailer requirements need to be considered.
Product compatibility should always be tested using the actual formulation and finished pack.
Once the internal lacquer has been applied, it is cured in an oven.
Curing helps the coating set properly and bond to the inside of the bottle.
This stage is essential because the lacquer needs to perform consistently during filling, storage and use. For refill and reuse packaging, lacquer performance becomes even more important because the bottle may be exposed to repeated cleaning, refilling and handling.
A lacquer that works for a single-use application may not automatically be suitable for a refill system.
For brands planning aluminium refill bottles, the internal coating should be tested against the expected lifecycle, cleaning process and number of reuse cycles.
Before decoration, an external base coat is usually applied.
This creates a suitable surface for printing and helps the finished decoration appear consistent.
The base coat can influence the final colour, finish and visual quality of the bottle. It also helps with ink adhesion, which is particularly important when the bottle will be custom printed.
For brands, this is where the aluminium bottle begins to move from functional container to brand asset.
Aluminium bottles can be decorated in several ways depending on the design, order quantity and production route.
Decoration may include:
One of the advantages of aluminium bottles is the available branding area. The full bottle surface can be used for colour, artwork, messaging and shelf impact.
For aluminium bottles specifically, BlueSky can support two-colour printing on stocked bottles from 1,000 units. More complex designs applied at point of manufacture are available from 25,000 units.
This makes aluminium bottles useful for both smaller trials and larger custom projects, depending on the design requirement and commercial brief.
After printing, the bottle may receive a transparent protective coating, often called an overlacquer.
This helps protect the decoration and can create a gloss or matte finish.
The overlacquer helps improve the durability of the printed design during handling, packing, filling and use. It also contributes to the final look and feel of the pack.
For premium personal care, spirits, olive oil or refill packaging, this finish can be important because the customer often interacts directly with the bottle.
A good finish can make the pack feel more polished and considered.
The bottle then goes through a necking process.
Necking gradually shapes the top of the bottle into the required opening and neck finish. This has to be done carefully because the neck must be compatible with the chosen closure.
The neck finish affects:
For beverage and spirits applications, some bottles may use ROPP necks. ROPP stands for Roll-On Pilfer Proof and is commonly used where tamper evidence is required.
For personal care and home care, standard screw necks may be more practical when using pumps, sprayers or dispensing closures.
The right neck finish should be considered early, especially if the product will be filled by a contract filler with specific line requirements.
The bottle base is also formed to support stability.
A stable base helps the bottle stand properly during filling, packing, storage, retail display and customer use.
This may seem simple, but it matters in practice. A bottle that tips easily can cause problems on the filling line or create frustration for the end user.
Base shape, bottle diameter and height should all be considered when choosing aluminium bottles for a specific product.
Once the bottle has been formed, coated, decorated and finished, it goes through quality checks.
Inspection may look at:
The approved bottles are then packed and prepared for delivery.
At this stage, the bottles are ready for filling, closure application and final product launch.
The manufacturing process helps explain why aluminium bottles can have different MOQs and lead times depending on the project.
Stock aluminium bottles can support smaller and faster projects because the bottle format already exists and is held ready for supply.
Custom manufacturing or complex decoration usually requires higher volumes because production lines, coating, printing and setup need to be planned around the order.
| Project type | Typical consideration |
|---|---|
| Stock aluminium bottle | Faster route, lower MOQ, useful for trials and repeat supply |
| Stock bottle with two-colour print | Branded option from lower volumes on selected bottles |
| Fully custom or complex print | Higher MOQ, longer lead time, more design flexibility |
| Bespoke shape or format | Highest complexity, usually requires major volume commitment |
For many BlueSky customers, stocked aluminium bottles with decoration can be a practical middle ground. They provide brand impact without immediately moving into a fully bespoke bottle project.
The internal lacquer is one of the most important parts of an aluminium bottle specification.
Aluminium is a strong packaging material, but many products should not sit directly against bare aluminium. The lacquer helps create a protective layer between the product and the bottle.
The lacquer should be reviewed for:
BlueSky can help customers discuss lacquer options and bottle suitability, but final compatibility testing should always be carried out by the brand owner, filler or appointed testing partner.
Aluminium bottles are especially strong where packaging needs to be visually distinctive.
They can support bold colours, minimalist designs, metallic effects, premium finishes and full-surface branding.
Decoration is particularly valuable for:
The right decoration route depends on the bottle format, order quantity, design complexity and launch timeline.
For smaller projects, two-colour printing on stocked aluminium bottles can be a practical route. For larger projects, more complex decoration can create a more distinctive finished pack.
The same manufacturing process can support aluminium bottles across very different sectors.
| Sector | Why aluminium may be considered |
|---|---|
| Personal care | Durable, bathroom-friendly and premium-looking |
| Hair care | Useful for refillable shampoo, conditioner and salon products |
| Home care | Strong for refillable sprays and countertop products |
| Beverage | Lightweight, shatter-resistant and distinctive |
| Spirits | Useful for travel, events, gifting and challenger formats |
| Olive oil | Complete light barrier and premium shelf presence |
| Wellness | Clean, modern and suitable for design-led ranges |
| Hospitality | Durable, refillable and brandable |
The format may be similar, but the specification will not always be the same. Product compatibility, lacquer, closure and filling process should be reviewed for each application.
BlueSky is a packaging supplier and distributor, not an aluminium bottle manufacturer.
That distinction is important.
Rather than manufacturing aluminium bottles in-house, BlueSky helps customers access aluminium bottle formats through a trusted supply network. This includes stock aluminium bottles, closure options, decoration support, samples and project guidance.
For customers, this can be more practical than going direct to a manufacturer, especially where the project needs:
BlueSky’s role is to make aluminium bottle projects more accessible and commercially realistic for brand owners and contract fillers.
Before choosing aluminium bottles, buyers should consider:
These questions help make sure the aluminium bottle is suitable not only as a visual choice, but as a complete packaging system.
BlueSky supplies aluminium bottles for personal care, beauty, home care, beverage, spirits, olive oil, wellness and refill-led applications.
The team can support with:
BlueSky does not need every customer to start from a fully bespoke bottle. In many cases, a stocked aluminium bottle with the right closure, lacquer and decoration can provide the right balance of quality, flexibility and brand impact.
Aluminium bottles are made through a detailed process of forming, coating, decorating and finishing.
For buyers, that process matters because it affects the bottle’s appearance, compatibility, closure choice, MOQ, lead time and final pack performance.
Whether you are developing a personal care range, refill system, spirits launch, olive oil product or premium home care pack, BlueSky can help you explore aluminium bottle options and choose a commercially realistic route.
Browse aluminium bottles →
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Our expert team is ready to assist you with your packaging needs.
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