Din ce sunt făcute capsulele Nespresso? Materiale pentru capsule din aluminiu vs plastic

Nespresso Pod Materials: Aluminum vs Plastic Capsule Composition Explained

Every day thousands of Nespresso pods are punctured, pumped full of hot water, and chucked away – but few coffee consumers are aware of what those plastic or aluminum capsules are actually made from, nor of how the materials used may impact their brew. For brand owners choosing capsule construction material, for consumers searching for safe microplastics, or for OEM production managers prepping filling systems, the capsule material quality influences brew freshness, taste, health, and recyclability. In this guide, we cover the specific metals, coatings, polymers, and engineering tolerances behind aluminum and plastic coffee pods – with support from regulatory guidelines and peer-reviewed research.

What Nespresso Capsules Are Actually Made Of

Nespresso capsules are manufactured entirely from aluminum – specifically, alloy 8011-O or 8079-O – with an interior food-grade lacquer barrier designed to prevent direct contact between the roasted coffee and the metal. Its lid is aluminum foil backed by a nonwoven paper filter, while the outside rim of the pod contains a non-aluminum sealing ring.

The use of aluminum applies across both the Nespresso Original and Vertuo machines. Nespresso has acknowledged its compatibility with “partly aluminum-based capsules”, in addition to those made entirely of aluminum, while a spokesman stated that the main body and lid of Vertuo capsules are aluminum with only the lid consisting of foil.

Since 2020, Nespresso’s Original capsules have been produced with 80% recycled aluminum, based on a Nestlé press release outlining its circular economy progression. In 2024, the company revealed that 88% of Vertuo ranges contain 85% post-industrial aluminum.

As to why Nespresso rejected plastics in favor of aluminum, the answer can be found in their impressive oxygen resistance. This barrier helps protect freshness, giving customers coffee storage up to 12 months without the need for nitrogen flushing – while blocking the penetration of light and moisture (other key factors for roast deterioration). Check out our guide on capsule format and materials for a comparison of different designs.

In summary: all Nespresso coffee capsules (Original & Vertuo ) are manufactured from aluminum. If you are sourcing compatible third-party capsules, these may contain non-aluminum plastics or compostable polymers instead.

Aluminum Coffee Pod Construction — Layer by Layer

Preparing a single cup aluminum Nespresso capsule begins with the formation of a reinforced coil blank. From there, and following assembly to a sealing ring rim, the capsule is formed by deep-draw presses which bring the shape to its final, rounded contour. Study the construction technologies to learn why aluminum is favored as the premium hot beverage packaging material.

The aluminum capsule shell is formed from alloy 8011-O, with foil aluminum made from a dulled “O” temper that has been fully annealed. State-of-the-art processing allows the sheet to be drawn into a very deep cup at 0.07-0.12mm thickness without microcracks, for a premium oxygen-tight seal. Into the bargain, the other common category alloy, 8079-O, is also considered suitable for the deep-draw process to produce capsule-forming applications at similar thicknesses.

The interior lacquer is either a food-grade epoxy or polyester coating, applied prior to forming of the capsule. These lacquers form an inert layer that blocks any carbon-carbon or carbon-aluminum contact with the coffee. Both lacquers are BPA NIA (not intentionally added) and PVC-free, and have been tested to the requirements of the US FDA 21 CFR 175.300 regulation for resinous and polymeric coatings in contact with food.

The exterior coating is the printed surface of the capsule, which allows for branding and identification of flavor types. Nespresso colors their capsules according to flavor profile, origin, intensities – whichever attributes they want to communicate.

The foil lid is separate aluminum foil, heat-sealed across the filled capsule. A thin filter paper separates the foil lid from the coffee grounds, stopping fines entering the brewed coffee. During the process of piercing and brewing of the capsule, the foil lid must withstand the pressure from the Nespresso machine piercing piston, and the flow rate of the subsequent brew.

Barrier properties are the primary reason for aluminum’s use as the gold standard in capsule packaging. It provides an almost perfect barrier to oxygen transmission (less than 0.5 cc/m²/day), which significantly reduces the rate of fermentation of the volatile aromatics. Aluminum does not allow entry of moisture, humidity or light, either, providing an all round triple barrier to the potential penetration of the roasted coffee aroma, for 9-12 months from the date of manufacture – without any need to nitrogen-flush as is the case with other plastics.

At AFPAK we use these specifications regularly in our capsule filling and sealing machinery. Deep draw aluminum capsules are subject to certain dimensional tolerances, which directly impact upon filling precision and the ability of the system to seal successfully.

Key takeaway: In construction of the aluminum capsule, there are in effect, four layers – a body alloy, interior lacquer, print coating, and foil lid – and each one has its advantages that positively impact freshness and food safety.

Plastic Coffee Pods — Materials, Grades, and Limitations

Nearly 60% of all coffee capsules used in the world are plastic, rather than aluminum. Third-party compatible capsules designed to fit in Nespresso, Keurig and similar systems tend to use bio-plastics or PP (#5 polypropylene). Typically, the primary body material is PP.

PP #5 polypropylene is one of the most common plastic grades used by coffee capsule manufacturers, and is inherently BPA-free (no bisphenol-A is needed in its production), is food-contact approved by the FDA, and is regulated by EU Regulation (EC) No 1935/2004. It is thermally stable up to approximately 130°C, so the capsule remains structurally intact and healthy during the brewing processes of machines such as Nespresso at temperatures of 92–96°C.

However, plastics do have a significant drawback in that they are semi-permeable to oxygen. Aluminum provides an absolutely complete barrier to oxygen, but plastic grades such as polypropylene will absorb oxygen, it is just a factor of “how much”. To preserve coffee freshness, the authors of the research use nitrogen-flushing to replace the remaining oxygen in the capsule with inert nitrogen gas. In practice, a gap of 6-9 months arises in shelf life of the coffee produced in the coffee, between 6 and 9 months of baked-on aroma in the capsule.

A widening area of concern over plastics is microplastic release. A 2026 review published by GlobalRPH, drawing from several peer-reviewed sources, states that plastic coffee capsules “can generate in excess of 10,000 microplastic particles per cup.” The main variable is temperature. More than 50% of all plastic particles are released when water is heated >50C, which always happens in the process of pulling an espresso.

Key lesson: Plastics are cheaper per unit, and can tolerate higher brewing temperatures, but their higher oxygen permeability, reduced shelf life and microplastic release makes them a special-case material trade-off for aluminum.

Aluminum vs Plastic Capsule Materials — Side-by-Side Comparison

A head-to-head comparison of aluminum to plastic capsules for manufacturing coffee capsules involves more than material costs. This side-by-side comparison goes through 8 dimensions that brand owners, production teams and eco-conscious consumers care about.

For brand owners needing to choose Nespresso capsule formats, the comparison decision-maker can be visualized in a 2×2 matrix: choice of cost-sensitivity or quality image. Aluminum capsules carry a 0.01–0.02 premium per capsule in raw input cost, but deliver a much longer shelf life, as well as zero microplastic risk, and the benefit of Nespresso’s existing recycling route. Plastic capsules can make significant cost-savings if you already have a nitrogen-flush infrastructure and are serving a market segment that is less environmentally sensitive.

From a production perspective, the material choice also factors into which Nespresso capsule filling and sealing machine types are relevant and what ranges of sealing condition parameters need to be supported, detail of which can be found below.

Key takeaway: Aluminum achieves premium freshness and safety, while plastics bring unit cost savings. Your decision should be based on brand positioning, infrastructure, and market demand.

Health and Safety — Do Coffee Pods Leach Chemicals?

Concerns involving material use in coffee capsules fall into three categories: migration of aluminum, leaching of BPA from plastics, and microplastic contamination. Here is some published science and regulatory information addressing each in turn.

Does Aluminum Leach Into Coffee?

Every Nespresso capsule is coated with a food-grade lacquer that prevents coffee from making direct contact with the aluminum. But is aluminum still migrating through that coating?

A paper in the Journal of Food Composition and Analysis tested aluminum migration from metallic capsule lids into brewed coffee, and showed levels of 0.46 mg/kg. To put this figure into perspective, the European Food Safety Authority (EFSA) has established a tolerable weekly intake (TWI) of 1 mg per kilogram of body weight in its 2008 scientific opinion, and that a 70 kg adult can safely consume 70 mg a week. Yielding 0.46 mg/kg from the coffee, our single shot completed contribute less than 1% of what EFSA considers tolerable weekly intake for an average adult.

EFSA also concluded in this opinion that no evidence exists that links dietary aluminum consumption at normal dietary levels to Alzheimer’s disease, a long stated concern in popular conversations.

Are Plastic Pods BPA-Free?

PP #5 polypropylene is a BPA free product naturally. BPA is not found in the polypropylene production, since it is linked with polycarbonate ( PC) and some epoxy resins. Coffee capsules in PP #5 manufacture fulfill the limit of BPA migration in package according to EU Reg 10/2011 ( plastic materials of food contact materials) as well as FDA 21 CFR for food contact polymers.

The Microplastic Question

This is where it becomes most different to the material safety comparison. Literature shows that plastic coffee capsules leach over 10000 microplastic particles per cup on hot water contact, thermally. In addition, as shown by the significant increase in particle counts above 50C and the fact that coffee is brewed at 92-96C.

On the other hand, aluminum pods emit none of the microplastics that plastic ones do. Aluminum being a metal, not a polymer, instead does not disintegrate into flakes of Polymer, that then emit micro-sized particles when they are broken apart or heated up. This is arguably the most reliable material-safety fact for aluminum capsules versus plastic options – a point that is more and more mentioned by market awareness as well as protective agencies looking into single-use applications.

Main point: aluminum pods induce almost no migration of metals (0.15% of EFSA TWI); plastic pods are free of BPA but emit >10,000 microplastic particles per cup. On the question of potentially dangerous chemical exposure, aluminum capsules are the safer alternative.

Recycling Coffee Capsules — Programs, Rates, and Real-World Challenges

Aluminum is recyclable forever without degradation of its material properties—something plastics cannot bring to the table. However, ‘recyclable’ and ‘indeed recycled’ are two distance markers that highlight the true environmental problem of coffee capsules.

The recycling program for Nespresso Capsules was started in 1991 in the country of origin – Switzerland. Since then, collection networks have expanded to over 80 countries and it is supported by 3 main collection channels 1) dedicated collection points (mostly at retail outlets), 2) Nespresso boutiques, 3) prepaid bags for mail-back recycling. More than 90% of the capsules sold to consumers are accessible to at least one collection option

Notwithstanding this infrastructure, the 2024 global recycling rate for Nespresso capsules is around 35 percent; the company has a public (although not certified) mission of reaching 60% by 2030. That discrepancy illustrates a biggest behavioral problem – consumers remembering to collect the used Nespresso capsules and take them to a recycler, not in their curbside recycling.

In the recycling process the grounds are separated from the aluminum. Grounds are composted or turned into biogas, while the aluminum is smelted and then fed back into the material supply stream. Since aluminum does not degrade during recycling it has the same properties (grain shape and size) as virgin material.

Plastic pod recycling encounters different obstacles. PP #5 is theoretically recyclable however home and municipal recycling services have different policies on such items. Many kerbside recycling schemes do not accept small items like coffee pods, and grounds from the ground coffee can lead to rejection from the sorting plant.

Compostable options- such as those made from PLA (polylactic acid), or paper based packs- need to bear BPI accreditation and composting plants must be able to reach and sustain temperatures above 58C.

Key learning: aluminum capsules are infinitely recyclable, but only about 35% are currently recovered. Closing that gap requires consumer behavior changes, not advanced materials science.

How Capsule Material Affects Coffee Filling and Sealing Equipment

The material you select for your capsule sets the parameters for the machine configuration your production line requires. Aluminum and plastic capsules have fundamentally different sealing requirements in terms of the die temperature, pressure, dwell time, and performance — less than optimal machine parameters can result in compromised seal integrity, oxygen ingress and diminished shelf life.

Aluminum capsule sealing depends on a heat-seal mechanism wherein a heated die applies pressure to a lid sealed around the rim of the capsule. Its three main parameters are die temperature, dwell time, and application pressure. In order to efficiently form a seal, the lacquer layer on the capsule rim and lid needs to soften and bond, but it must not impact the aluminum substrate.

Plastic capsules may use either a heat-seal or an ultrasonic method. Ultrasonic sealing involves the application of local thermal heat generated at a high frequency from the ultrasonicator, which fuse the lid to the PP rim without broad heating. In the case of capsules including a nitrogen flushing process in the capsule, this method allows the seal to form rapidly after gas displacement has taken place.

Accuracy of the filling process can be as important as a strong seal. Using precision fill equipment, you can consistently achieve 0.15 g accuracy at 70 capsules per minute speed — critical to repeated extraction and dose-to-dose flavor consistency.

AFPAK has been designing and manufacturing coffee capsule filling and sealing equipment for over 14 years, designing solutions for both aluminum and plastic capsule formats. Our Nespresso capsule filling and sealing machinery are capable of accommodating the full range of Nespresso-compatible capsule materials, with bespoke sealing profiles developed for each format.

Key learning: the choice of material determines the sealing method, temperature range, nitrogen flush timing, and throughput achievable. Selecting a machine configuration optimized for your capsule material is key to producing an effective seal.

întrebări frecvente

Are Nespresso pods made of aluminum or plastic?

Vizualizați răspunsul

All official Nespresso capsules (both Original Line and Vertuo) contain aluminum with a lacquer coating on the interior surface. Other third party compatibilities will contain plastic (PP #5) and may be compostable materials including PLA.

What are Nespresso Vertuo pods made of?

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Vertuo capsules use the same aluminum construction as the Original Line capsules. As of 2024, 88% of Vertuo capsules contain 85% recycled aluminum (compared to a minimum of 80% recycled aluminum for Original Line capsules).

Do Nespresso pods release microplastics?

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No. because aluminum capsules can’t release microplastics because aluminum is a metallic, not polymeric material. Plastic capsules from other brands including those in the research above released over 10,000 microplastic particles per cup.

Are there chemicals in Nespresso pods?

Vizualizați răspunsul

Lacquer used inside each capsule prevents the coffee making contact with the aluminum. Migration testing of the interior lacquer coating in Nespresso capsules indicated aluminum concentrations of 0.46mg/kg in brewed coffee, representing roughly 0.15% of the EFSA tolerable weekly intake for a 70 Kg individual. Interior lacquers are tested to the standards of the FDA 21 CFR 175.300.

Can you recycle used Nespresso capsules at home?

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Nespresso has a free recycling program available through dedicated collection points, boutiques and in those areas where a pick-up service exists via pre-paid mail back bags. Once returned, the aluminum is separated and recycled ad infinitum. Coffee grounds are generally composted or turned into biogas. See nespresso.com/recycling for locations of pick-up points and mail back program areas.

Is there an alternative to aluminum or plastic pods?

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Yes. There are some third party suppliers who produce compostable pods made from PLA or paper-based based materials. Those must be certified BPI for commercial composting. Shelf life for these products tends to be lower due to inferior oxygen barriers – 3-6 months.

What are Starbucks Nespresso pods made of?

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Starbucks by Nespresso capsules use identical aluminum construction to that used in traditional Nespresso capsules. These are made under the same licensing arrangements with the Nestlé company. Materials are identical and includes use of food grade lacquers and aluminum foil with a paper filter backing.