What Diam Bouchage does

Diam Bouchage is a French manufacturer of technological cork closures for the global wine, Champagne, and spirits industries, headquartered in Céret (Pyrénées-Orientales) and operating as a wholly-owned subsidiary of Oeneo Group. The company designs and produces cork stoppers under three core product families — Diam for still wines, Mytik Diam for sparkling wines and Champagne, and Setop Diam for spirits — complemented by sub-brands such as Origine by Diam (bio-sourced), Collection by Diam (aesthetic premium line), LiOX by Diam (reduced oxygen release for sparkling), and Setop Element (eco-designed spirits closures with upcycled heads). Its central technology is the proprietary DIAMANT® process, which uses supercritical CO2 at differentiated pressure to eliminate TCA and 150 other volatile molecules from cork, guaranteeing releasable TCA ≤ 0.3 ng/l and delivering controlled oxygen permeability tailored to wine aging profiles. Manufacturing is concentrated across three plants in the main European cork-producing regions (France, Spain, Portugal), supplemented by finishing units in Chile and the USA via distributor partners.

The company operates an enterprise B2B go-to-market, combining direct regional export managers with a network of strategic distributors (G3 Enterprises for USA, Altasur for South America, Belbo Sugheri for Italy, Vinocor for Australia/NZ, and others), reaching over 16,000 active clients across 80+ countries with 80% of sales from export. Pricing is quote-based and unit-priced, configured around permeability levels, dimensions, customization, and marking, typically contracted over multi-year horizons. Customer segments span premium and artisan wineries (long-aging still wines), Champagne houses and sparkling wine producers (pressure maintenance and bubble preservation), premium spirits brands (customizable heads, brand identity), and organic/biodynamic producers (sustainability-aligned closures). The company holds multiple ISO certifications (9001, 14001, 45001), FSSC 22000 food safety, FSC and OK Biobased certifications, EcoVadis Gold (2022 and 2023), and gender equality index scores of 83–87/100 in France, reflecting an industrial operator with mature compliance and sustainability frameworks rather than a venture-backed growth business.

Name

Diam Bouchage

Legal name

DIAM BOUCHAGE

Website

https://diam-closures.com

Company type

Private

Founded year

2004

Operating status

Operating

Headcount range

11–50 employees

Short description

Diam Bouchage manufactures technological cork closures (Diam, Mytik Diam, Setop Diam) using its proprietary DIAMANT® supercritical CO2 process for premium wineries, Champagne houses, and spirits producers globally, serving 16,000+ clients across 80+ countries.

Ownership category

akta.pro rank

Product category

Cork closures for wine, Champagne, and spirits

NAICS

Beverage Manufacturing (3121)

SIC

Beverages (2080)

akta.pro primary industry

Alcoholic Beverage Packaging & Closures Brands (Bottles, Cans, Kegs, Corks, Caps) (CRADAIAK)

akta.pro secondary industry

Cork & Synthetic Stoppers (IMALALAK)

Keywords

• Technological cork closures
• Wine bottle closures
• Sparkling wine corks
• Spirits cork stoppers
• TCA-free cork manufacturing

Headquarters

HQ city

Céret

HQ country

France

HQ region

Europe

Offices5 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Cork Closure Sales: Manufacturing and selling technological cork closures for still wines (Diam), sparkling wines (Mytik Diam), and spirits (Setop Diam). Revenue from product sales with varying permeability levels, dimensions, and customization options.

Pricing tiers

Go-to-market motion3 records

Distribution channels3 records

Marketing channels15 records

Core offering

Diam Bouchage designs and manufactures technological cork closures for the wine, Champagne, and spirits industries using its proprietary DIAMANT® supercritical CO2 purification process. The portfolio includes three core lines—Diam (still wines), Mytik Diam (sparkling wines/Champagne), and Setop Diam (spirits)—plus specialty ranges Origine by Diam (bio-sourced), Collection by Diam (aesthetic premium), LiOX by Diam (reduced oxygen release), and Setop Element (upcycled spirits).

Product overview

Diam Bouchage designs and manufactures technological cork stoppers for still wines, sparkling wines, and spirits. The product portfolio is organized into three core product lines: Diam (still wines), Mytik Diam (sparkling wines/Champagne), and Setop Diam (spirits). These are complemented by specialized sub-brands including Origine by Diam (bio-sourced eco-designed range), Collection by Diam (aesthetic premium line combining traditional cork appearance with technology), LiOX by Diam (desorbed corks for reduced oxygen release in sparkling wines), and Setop Element (upcycled eco-designed stoppers for spirits). All products benefit from the proprietary DIAMANT® CO2 supercritical cleaning technology and share core guarantees of sensory neutrality, homogeneity, and controlled permeability.

Differentiator

Problem solved

Functional benefit

Brands

• Mytik Diam: Cork range specifically designed for sparkling wines and Champagne, offering controlled oxygen transfer and mechanical consistency.
• Setop Diam
• Origine by Diam
• Collection by Diam
• LiOX by Diam
• Setop Element

Products and services

• Diam Technological cork stoppers for still wines, offering controlled oxygen transfer and mechanical guarantees from 2 to 30 years. Built on the proprietary DIAMANT® supercritical CO2 cleaning process eliminating TCA at unit level.
• Mytik Diam Technological cork stoppers specifically designed for sparkling wines and Champagne. Maintains internal pressure, preserves bubble freshness, prevents dry veins, cork hardening, and capdisc bursting during aging.
• Mytik Diam Tirage Cork options specifically designed for riddling and aging sparkling wines on laths in Champagne production, developed in collaboration with major Champagne houses.
• Setop Diam Custom cork stoppers for spirits with custom-designed heads available in various materials (wood, metal, zamak, plastic). Offers sensory neutrality, homogeneity guarantees, and reliable opening torque.
• Origine by Diam Bio-sourced cork stopper range using a binder composed of 100% plant-based polyols and beeswax emulsion. Certified OK Biobased 4 stars by TÜV Austria. Available in Diam 3, 5, 10, and 30 variants.
• Collection by Diam Premium cork stopper combining a Diam micro-agglomerated cork core with an elegant natural cork skin. Uses a European-patented high-precision dressing technique to cover each face (mirrors and roule) with natural cork sheet.
• LiOX by Diam Desorbed cork stopper for sparkling wines that releases 50% less oxygen during the OIR phase (Oxygen Initial Release) than classic Mytik Diam. Limits initial oxidative shock and prevents premature oxidation.
• Setop Element Eco-designed cork stopper with head made from upcycled materials from spirits production (whisky draff, apple marc, lavender, wood fragments). Offers unique customization and packaging differentiation for spirits brands.
• Diam 10 and Diam 30 Expanded Permeability Expanded higher-permeability variants of Diam 10 and Diam 30 still wine corks for wines with more reducing profiles, while maintaining mechanical properties and oxygen transfer consistency.

Quantifiable outcome

• TCA relargable ≤ 0.3 ng/l (unit-level guarantee)
• +4 more outcomes

Named customers12 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

17 partnerships are on record, tiered core and minor.

• Institute of Masters of WinecoreStrategic or Co-development Partner · 1 January 2024Prestigious global partnership with the 70-year-old Institute of Masters of Wine, which has 412 Masters of Wine across 32 countries. Activities include hosting student visits, wine tasting events, and educational programs about cork technology.
• G3 EnterprisescoreChannel Partner/ Reseller/ DistributorExclusive US distributor with finishing plant capacity for 26 million corks per month. Operates local marking unit in California and hosts Wine Conversations tasting events.
• Grupo AltasurcoreChannel Partner/ Reseller/ DistributorLong-standing South American distributor since approximately 15 years. Opened 2000m2 finishing unit in Santiago, Chile in 2022 with 26 million cork per month capacity.
• Belbo SughericoreChannel Partner/ Reseller/ DistributorItalian distributor operating from Piedmont region, representing DIAM at SIMEI trade show.
• VinocorcoreChannel Partner/ Reseller/ DistributorAustralian and New Zealand distributor, exhibiting at WineTech trade show.
• CIVC (Comité Interprofessionnel du Vin de Champagne)minorStrategic or Co-development PartnerPartnership since 2019 for collection and recycling of used cork stoppers in Champagne-Ardenne region.
• EpsyvinminorStrategic or Co-development PartnerChampagne regional partner for cork recycling initiative, with collection points on customer premises.
• Agir Cancer GirondeminorStrategic or Co-development PartnerPartnership established in 2021 for cork recycling in Bordeaux/Gironde region.
• Un toit pour les abeillesminorStrategic or Co-development PartnerAssociation supported by Diam Bouchage for bee conservation, recognizing bees' role in biodiversity and cork oak forest pollination.
• ASL Suberaie VaroiseminorChannel Partner/ Reseller/ DistributorPartnership for sourcing cork harvested in Provence, France, supporting local economy and sustainable forest management.
• ASL Suberaie CatalaneminorChannel Partner/ Reseller/ DistributorPartnership for sourcing cork from Roussillon region, France.
• SilvacoopminorChannel Partner/ Reseller/ DistributorCorsican forestry cooperative supplying cork for Diam's French cork range.
• Jean-Paul GAUD SAcoreChannel Partner/ Reseller/ DistributorExclusive Swiss importer for DIAM corks since January 2024.
• VivelysminorStrategic or Co-development PartnerSister company within Oeneo Group specializing in wine aging solutions. Co-sponsored Innovation category at Vignes d'Or competition.
• Seguin MoreauminorStrategic or Co-development PartnerOeneo Group sister company focused on oak barrel aging. Co-sponsored Chai Innovation category at Vignes d'Or competition.
• Oeneo GroupcoreOthersParent company of Diam Bouchage. Oeneo operates two divisions: aging (Seguin Moreau, Vivelys) and closures (Diam Bouchage).
• French Fab NetworkminorStrategic or Co-development PartnerNational network of French industrial companies committed to 'industry of the future' initiatives.

Scale indicators13 records

Recent moves8 records

Expansion highlights6 records

Direct peers

• Nomacorc (CKS Packaging): Leading manufacturer of synthetic wine closures, headquartered in the US with global production. Competes with Diam particularly in the still-wine segment where screw caps and synthetics substitute natural/technical cork; positions itself as a TCA-free alternative with predictable oxygen transmission.
• SCOPE Closures (Rivercap): South African cork and alternative closure producer with global wine industry reach; part of Rivercap Group covering glass bottle top applications. Competes with Diam across natural cork, technical cork, and synthetic/sparkling closures for wineries worldwide.
• J. Pinto Leitão & Irmão (JPSCork): Portuguese cork stopper manufacturer offering both natural and technical cork closures for wines, Champagne, and spirits. Direct competitor to Diam's core Diam and Mytik ranges, particularly in Iberian and international still-wine segments.
• Lafitte Cork (Olívia & Amorim subsidiary group): Portugal-based cork stopper manufacturer serving the global wine industry with natural cork, colmated, and technical closures (including Neversys). Direct competitor to Diam across price points and product types, especially for European and export still-wine customers.
• Portocork USA: North American distributor and manufacturer of cork closures serving premium US wineries, with sourcing from Portuguese cork producers. Direct competitor in the premium still-wine cork segment, emphasizing natural cork aesthetic with quality control programs.
• Corticeira Amorim: World's largest cork producer with a Cork Stoppers division serving global wine, Champagne, and spirits markets. Closest direct competitor to Diam, with comparable product scope across natural and technical cork closures for premium wineries, though Amorim's portfolio is broader (raw cork, cork composites) and not solely focused on the DIAMANT-style supercritical CO2 purification niche.
• Cork Supply Group: US-based global supplier of cork closures and oak alternatives for the wine industry, with operations in Portugal. Direct competitor offering both natural cork and treated cork closures, including pioneering 'InNature' and 'NaturCollec' ranges targeting TCA control.
• M.A. Silva Cork: Portuguese cork stopper manufacturer serving wine and spirits markets worldwide. Competes directly with Diam in natural cork closures for premium still wines; smaller scale and more focused on natural aesthetic cork versus Diam's DIAMANT technological positioning.

Broad incumbents

• Amcor: Global packaging conglomerate with a wine closures business alongside broader beverage packaging. While not a pure-play cork competitor, Amcor offers an alternative portfolio approach for large wine customers, providing closure alternatives (screw caps, synthetic) at industrial scale.
• Guala Closures: Italian multinational closures producer serving wines, spirits, and beverages with a portfolio spanning aluminium caps, screw caps, and other closure types. Competes with Diam at the broader wine and spirits packaging layer rather than at the technical-cork niche.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xtwitter.com/Diam_cork
• YouTubeyoutube.com/user/DiamCork
• Facebookfacebook.com/diam.cork
• LinkedInlinkedin.com/company/diam-bouchage
• Instagraminstagram.com/diam.cork

Compliance8 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Subsidiaries2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Diam Bouchage