Amcor plc explores seaweed coatings for fiber packaging. Collaboration highlights innovation push in sustainable materials

Amcor plc is partnering with seaweed-based materials startup Kelpi to evaluate bio-based coatings for fiber packaging, deepening its investment in sustainable packaging technologies while expanding its AmFiber platform.

By Thomas Clarke, Operations & Strategy desk. Reviewed on June 30, 2026 at 2:59 p.m. ET.

Amcor plc (ISIN JE00BJ1F6598) has announced a collaboration with U.K.-based startup Kelpi to test seaweed-based bio-coatings for fiber packaging, an initiative framed as part of its broader AmFiber portfolio for paper-based packaging solutions, according to a press release summary cited by StreetInsider on June 29, 2026. The StreetInsider report states that Amcor, which trades on the NYSE under the ticker AMCR, is evaluating whether Kelpi's seaweed-derived coatings can deliver gas and moisture barrier performance while remaining compatible with existing paper recycling streams.

Testing seaweed-based fiber coatings

The reported collaboration focuses on Amcor's research and development teams assessing Kelpi's proprietary coating platform, which uses seaweed-derived materials to form functional barriers on fiber packaging substrates. According to the StreetInsider summary, the bio-based coatings are intended to replace or reduce fossil fuel-derived inputs in conventional barrier layers while retaining the processability needed for large-scale converting operations in packaging plants. Amcor's aim is to determine whether these coatings can be integrated into the AmFiber family of fiber-based packaging solutions without compromising recyclability in established paper recovery systems.

StreetInsider notes that the companies are emphasizing potential sustainability gains, including reduced reliance on petrochemical feedstocks and greater use of renewable resources in packaging applications. The article reports comments from Amcor's Director of Research and Development for AmFiber, who highlighted the combination of processability, barrier performance for gases and moisture, and recyclability as core attributes of the technology being evaluated. A senior executive responsible for corporate venturing at Amcor reportedly described the collaboration as part of the company's approach to bringing new technologies into its innovation ecosystem, with the goal of exploring opportunities to scale seaweed-based coatings across Amcor's global portfolio if performance and economics prove compelling.

Sustainability focus and innovation strategy

The collaboration fits into a wider industry push toward sustainable packaging solutions, especially for paper and fiber formats where barrier performance has historically relied on plastic films and polymer-based coatings. Within this context, Amcor is positioning AmFiber as a platform for paper-based packaging that offers functionality traditionally associated with flexible plastics, such as protection against oxygen and moisture, while aiming to maintain compatibility with paper recycling infrastructure. Leveraging bio-based materials derived from seaweed aligns with the broader trend of using renewable feedstocks to reduce lifecycle greenhouse gas emissions and improve circularity metrics for packaging.

StreetInsider's summary stresses that this initiative is at the evaluation stage, not yet a commercial roll-out, with no definitive product launches or binding long-term supply agreements announced in connection with the Kelpi partnership. For investors, this means the collaboration currently represents pipeline innovation rather than an immediate revenue driver. However, such R&D programs can influence medium-term strategy and capital allocation, particularly if they unlock new categories of recyclable barrier packaging for consumer goods, food, or beverages. Amcor's focus on external start-up collaborations also reflects a deliberate strategy of using corporate venturing and open innovation to access emerging technologies outside its traditional internal development channels.

Representative fiber-based solution

Within its fiber-based packaging portfolio, Amcor has highlighted the AmFiber platform as a family of solutions that extend the capabilities of paper packaging for applications that traditionally relied on flexible plastics. AmFiber-branded products are designed to use paper or other fiber substrates combined with coatings or barrier structures that enable functionality such as moisture and oxygen protection, sealability, and mechanical strength needed for supply chain handling. While specific product configurations can vary depending on end-use requirements, AmFiber solutions generally seek to combine recyclability in paper streams with performance suited for categories such as dry food, ambient grocery items, or certain household products.

Stock price reference

As of June 30, 2026, market data pages specific to Amcor plc's current share price were not available in the provided source set, so no verified real-time price in USD or other currencies can be cited here. The company is reported by StreetInsider to trade under the ticker AMCR on the New York Stock Exchange, but without a supported, dated price reference linked to this article, only the listing information can be referenced without numerical detail.

Key data for Amcor plc

• Company: Amcor plc
• ISIN: JE00BJ1F6598
• Ticker: AMCR
• Exchange: NYSE (as referenced in StreetInsider coverage)
• Price (as of June 30, 2026, 2:59 p.m. ET): not available from the current source set
• Market cap: not documented in the current source set
• Sector / Industry: Packaging solutions and materials
• Index membership: not documented in the current source set
• Next earnings date: not yet officially scheduled in the current source set

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