Green Flag

What Green Flag does

Green Flag (株式会社GREEN FLAG) is a Japanese material manufacturer founded in May 2023 and headquartered in Nishinomiya, Hyogo Prefecture. The company produces Rebornfiber®, a recycled fiber felt board manufactured from discarded clothing, corporate uniforms, excess inventory, and industrial textile waste using a proprietary airlaid felting process followed by thermocompression pressing — a method that requires no adhesive and no water. Its defining technical capability is the ability to material-recycle blended and mixed textile fibers (such as cotton-polyester combinations) without prior fiber separation, addressing the ~66% of Japan's approximately 1 million tonnes of annual textile waste that is currently landfilled or incinerated because conventional recycling cannot process it. Standard product lines include RD Series (denim-mixed, blue-gray), RH Series (hemp fiber from coffee bean gunny bags, brown), and RW Series (white/ivory); boards range from 0.5mm sewable sheets to 20mm rigid boards processable like wood.

Name

Green Flag

Legal name

株式会社GREEN FLAG

Website

https://greenflag-corp.co.jp

Company type

Private

Founded year

2023

Operating status

Operating

Short description

Green Flag is a Japanese material manufacturer founded in 2023 that produces Rebornfiber® recycled fiber felt boards from discarded textiles using an adhesive-free airlaid process, serving enterprise sustainability, interior design, and office furniture customers.

Ownership category

akta.pro rank

Product category

Sustainable Building Materials

NAICS

Nonwoven Fabric Mills (313230), Nonwoven Fabric Mills (31323)

SIC

Apparel & Other Finishd Prods Of Fabrics & Similar Matl (2300)

akta.pro primary industry

Recycled Textile Compounding & Nonwoven Reprocessing (Insulation/Felts/Geotextiles) (IMAOAMAH)

akta.pro secondary industries

Fiber-Based Sustainable Packaging (Recycled Paper, Molded Fiber, Bagasse) (IMALAMAA), Sustainable & Certified Materials (Organic, Recycled, Traceable) (CRAAAMAK)

Keywords

• Recycled fiber materials
• Textile waste recycling
• Sustainable building materials
• Acoustic felt boards
• Circular economy materials

Headquarters

HQ city

Nishinomiya

HQ country

Japan

HQ region

Asia

Offices4 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Rebornfiber® Board and Sheet Material Sales: GREEN FLAG generates primary revenue from selling standardized and custom-ordered Rebornfiber® boards and sheets in various thicknesses (0.5mm–20mm) and material grades (RD混紡材, RH麻材, RWホワイト). Materials are sold to architects, interior designers, office furniture companies, and construction firms for use as acoustic panels, furniture components, display materials, and construction boards. The company maintains inventory of standard规格 materials for rapid delivery, with custom orders typically taking 1–1.5 months.
2. Custom Original Board Manufacturing Service: A significant revenue stream is the bespoke Rebornfiber® manufacturing service, where GREEN FLAG accepts clients' discarded textiles (minimum 60kg) and transforms them into custom-colored/original-grade boards for use in the client's own sustainability projects. This includes the 'Original再生繊維ボード制作プラン' launched in November 2023, priced from ¥230,000 minimum, covering material processing, felt formation, and heat pressing. Revenue is recognized as one-time project fees per batch.
3. Secondary-Processed Products (Novelty Goods, Furniture, Display): GREEN FLAG generates revenue from downstream value-added products made from Rebornfiber®: novelty items (coasters, card holders, tote bags, keychains, file cases, plant pots, phone stands), office furniture (partitions, benches), commercial display fixtures, and acoustic panels (e.g., the Hayashi Seisakusho co-branded audio room panel sold via Makuake and retail). Products are sold directly or through co-development partnerships, with minimum order quantities typically starting at 100 units.

Pricing tiers

Go-to-market motion3 records

Distribution channels4 records

Marketing channels8 records

Core offering

Green Flag manufactures Rebornfiber® — recycled fiber felt boards and sheets produced from discarded textiles using an airlaid felting and thermocompression process that uses no adhesives and no water. The company sells standard board variants (RD mixed-fiber, RH hemp-fiber, RW white), specialized acoustic panels (Q-on), custom OEM boards manufactured from clients' own waste fibers (minimum 60kg input), and downstream novelty/furniture/display products made from Rebornfiber® for sustainability and promotional use.

Product overview

GREEN FLAG (株式会社グリーンフラッグ) operates as a material manufacturer enabling the circular economy for textiles, producing Rebornfiber® — a recycled fiber felt board material made from discarded textiles and textile waste. The core product portfolio centers on Rebornfiber® Board (rigid board and sheet materials) available in three standard variants: RD Series (mixed fiber from denim scraps, blue-gray), RH Series (hemp fiber from coffee bean gunny bags, brown), and RW Series (white from sorted white/ivory textiles). Rebornfiber® Q-on is a specialized sound-absorbing variant using automotive acoustic manufacturing technology, available as 1-layer soft type for absorption and 3-layer type for combined absorption and blocking. Boards range from 0.5mm to 20mm thickness, with thin sheets sewable like fabric and thick boards processable like wood. Beyond raw materials, GREEN FLAG offers downstream product manufacturing including novelty/promotional items (coasters, ID holders, tote bags, button trays, file cases, smartphone stands, planter covers), furniture and display products (partitions, display stands, benches), and custom OEM from clients' own discarded textiles (minimum 60kg input). Production uses a unique air-laid process without water or adhesive, with manufacturing in Okayama Prefecture at partner facility (株式会社ケナテックス).

Differentiator

Problem solved

Functional benefit

Brands

• Rebornfiber®: Regenerated fiber felt board material produced from waste textile fibers through material recycling process
• Rebornfiber® Q-on

Products and services

• Rebornfiber® Board Recycled fiber felt board material produced from discarded clothing, excess inventory, and textile scraps via material recycling. Sold as standardized rigid boards and thin sheets for use by architects, interior designers, office furniture companies, construction firms, and brand managers as acoustic panels, furniture components, display materials, and construction boards.
• Rebornfiber® Q-on Specialized sound-absorbing felt sheet/board material for interior acoustic treatment in offices, meeting rooms, commercial spaces, and residences. Utilizes a porous multi-layer fiber structure with validated sound absorption performance in living-frequency ranges, tested at Osaka Research Institute of Industrial Technology.
• Original Regenerated Fiber Board Manufacturing Plan Bespoke manufacturing service that accepts clients' discarded textiles (minimum 60kg) and transforms them into custom-colored/original-grade Rebornfiber® boards. Designed for enterprises, municipalities, and sports organizations seeking narrative-rich circular economy projects for ESG reporting and sustainability communication.
• Rebornfiber® Novelty Items Catalog of sustainable novelty and promotional items made from Rebornfiber® board material, targeting corporate procurement for ESG-aligned promotional goods, events, and gifting. Customizable with company logos via silk printing; offered in mixed fiber (RD) or hemp (RH) material options.
• Rebornfiber® Coaster Standard recycled fiber felt coaster sold in volume tiers to enterprise buyers for use as sustainable corporate gifts, promotional items, and event giveaways.
• Rebornfiber® Assembled Partition Tool-free assembled partition wall made from Rebornfiber® board material for office and commercial interior space division. Sold to enterprises and interior designers as a sustainable alternative to conventional partition systems.
• Rebornfiber® Eco Tote Bag Tote bag sewn from thin Rebornfiber® felt sheet, sold as a sustainable OEM or standard product to enterprise buyers for promotional, retail, and gifting use.
• Rebornfiber® Display Stand Foldable reusable exhibition display stand made from Rebornfiber® board for use at trade shows, retail pop-ups, and corporate events by enterprise marketing teams.
• Rebornfiber® Store Collection Box Foldable in-store collection box made from Rebornfiber® board designed for retail chains and brands to collect customer-returned textiles for circular economy programs.
• Audio Room Panel (Hayashi Seisakusho × Rebornfiber® Collaboration) Co-developed consumer audio room panel using Rebornfiber® Q-on as the acoustic core, distributed via Makuake Store, Dzones, and Miki Gakki Rakuten retail channels for home and small-office acoustic treatment.

Quantifiable outcome

• A single 60kg batch of discarded uniforms can produce approximately 15 boards (5mm thick) or 8 boards (10mm thick) plus hundreds of novelty items, replacing equivalent virgin material procurement.
• +3 more outcomes

Named customers10 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration1 record

Feature5 records

Partnerships

Ten partnerships are on record, tiered minor and core.

• Waseda University — GCC Common Room (早稲田大学 GCCコモンルーム)minorStrategic or Co-development Partner · 1 October 2025Waseda University's Global Citizenship Center (GCC) Common Room, opened October 2025 in Building 27 on the Waseda Campus, adopted Rebornfiber® Q-on boards for its interior acoustic treatment. The project incorporated fibers collected from Waseda students and faculty, creating a circular narrative linking the university's sustainability community space to the material itself. The project was designed by IIOI architects and featured in GREEN FLAG's official press release.
• Ueni Tsusho Co., Ltd. / RADSKY Brand (ウエニ貿易 / RADSKY)minorStrategic or Co-development Partner · 1 June 2025GREEN FLAG supplied Rebornfiber® materials for RADSKY's limited-edition charm sets, sold as part of a fragrance + sustainable accessory bundle. The campaign theme was 'fashion meets fragrance in a circular future.' RADSKY also contributes a portion of sales to the Nippon Conservation Fund (日本自然保護協会), linking GREEN FLAG's material to broader environmental charity.
• Hayashi Seisakusho Co., Ltd. (株式会社林製作所)coreStrategic or Co-development Partner · 1 March 2025GREEN FLAG and Hayashi Seisakusho co-developed the 'Audio Room Panel' (オーディオルームパネル), using Rebornfiber® Q-on as the core sound-absorbing material. Hayashi Seisakusho, a 75-year-old office furniture manufacturer, designed the panel frame and decorative cover while GREEN FLAG supplied the acoustic core. The product launched on Makuake in March 2025 (208% of ¥1.4M target), entered general retail in October 2025 (Makuake Store, Dzones, Miki Gakki Rakuten). This is GREEN FLAG's most commercially significant partnership, validating the Rebornfiber® brand in the consumer/architect market.
• Kobe University — Graduate School of Engineering (神戸大学 大学院工学研究科)coreStrategic or Co-development Partner · 1 January 2025GREEN FLAG entered a collaborative research agreement with Associate Professor Okuzono Takeshi (奥園 健) at Kobe University's Graduate School of Engineering. The collaboration focuses on validating Rebornfiber® hard boards and porously-processed materials for use in architectural acoustic metamaterial and perforated panel structures targeting mid-low frequency noise in buildings. The research, conducted as a 2025 graduation thesis project, demonstrated that Rebornfiber® can serve as a next-generation acoustic material for children's facilities, offices, commercial spaces, and residences. The partnership aims to accelerate development of new acoustic products incorporating Rebornfiber® with both design appeal and high-performance sound absorption.
• Adastria Co., Ltd. / O0u Brand (アダストリア / O0u)minorStrategic or Co-development Partner · 1 September 2024Adastria's D2C fashion brand O0u, which debuted at Rakuten Fashion Week Tokyo 2025 S/S, used Rebornfiber® as a floor-covering material for its circular monument installation. The collaboration embodied the O0u brand concept 'LIVING IN A CIRCULAR WORLD' and demonstrated Rebornfiber®'s applicability to high-profile fashion events while reducing post-event textile waste.
• Kenatex Corporation (株式会社ケナテックス)coreTechnology or IntegrationGREEN FLAG outsources all manufacturing of Rebornfiber® boards and sheets to Kenatex Corporation in Okayama Prefecture, Japan. Kenatex operates automotive acoustic felt production lines that GREEN FLAG's process leverages — using airlaid felting followed by thermocompression pressing without adhesives. This manufacturing partnership is the cornerstone of GREEN FLAG's cost competitiveness, as it avoids capital expenditure on new production equipment.
• Welfare Facilities for Disability Employment (障がい者就労支援施設)minorStrategic or Co-development PartnerGREEN FLAG outsources the pre-processing sorting and disassembly work (removing buttons, zippers, and other non-fiber components from collected garments) to welfare facilities (B型障がい者就労施設) in Okayama Prefecture. This integrates disability employment support ('S' in ESG) into GREEN FLAG's material recycling value chain, creating Social+Environmental dual impact.
• IIOI Architects (株式会社IOI建築設計)minorImplementation/ SI/ Consulting PartnerIIOI architects designed the Waseda University GCC Common Room interior that incorporated Rebornfiber® Q-on acoustic boards. As the project's architect, IIOI specified GREEN FLAG's materials in the building's acoustic design, functioning as a technical specifier and design consultant for the installation.
• SOLSO (daishizen Inc.) / HarakadominorStrategic or Co-development PartnerSOLSO (株式会社daishizen) designed and constructed the interior of Harakado commercial facility in Harajuku, Tokyo, using Rebornfiber® RD/RH series boards for multiple applications (benches, planters, signage, plant stabilization). The project, which opened April 2024, is featured as a flagship case study on GREEN FLAG's website, demonstrating the material's versatility in high-profile commercial interiors.
• DesignFuture Japan Co., Ltd. (Material Bank® Japan)minorChannel Partner/ Reseller/ DistributorDesignFuture Japan operates Material Bank® Japan, a B2B material sample marketplace. GREEN FLAG lists Rebornfiber® cut samples on the platform, enabling architects and designers to order consolidated samples alongside materials from other manufacturers. The partnership increases GREEN FLAG's discoverability among Japanese design professionals.

Scale indicators6 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Toray Industries: Global Japanese textile and materials conglomerate with established recycled-fiber programs (e.g., recycled PET fibers, Ecodear plant-based fibers) and large-scale manufacturing. Competes in the same enterprise sustainable-materials procurement landscape with substantially greater capital, IP, and global distribution.
• Teijin Limited: Japanese materials group producing aramid, carbon fiber, and recycled polyester solutions including its ECO CIRCLE® fiber-to-fiber recycling program. Comparable on circular textile value chains and serves enterprise customers with similar sustainability procurement needs, with much broader product portfolio and global reach.
• Asahi Kasei: Major Japanese diversified materials and chemicals group with a sustainable materials portfolio including Bemliese® (regenerated cellulose from cotton waste) and recycled polymer resins. Operates across multiple sustainable fiber and nonwoven categories at industrial scale, with far larger R&D, IP, and distribution than Green Flag.
• Unitika Ltd. Japanese materials manufacturer producing recycled polyester (ECOPET®), nonwovens, and industrial fibers. Has established textile-recycling infrastructure and serves automotive, interior, and apparel customers with recycled-content materials — comparable on technology and target market, with substantially greater scale.

Direct peers

• Japan Vilene Company: Japan's largest nonwoven fabric manufacturer, producing airlaid, spunbond, and needlepunch nonwovens for automotive, industrial, and interior applications. Directly comparable on the airlaid nonwoven production technology Green Flag leverages at Kenatex, and serves the same automotive-acoustic and interior-design customer segments.
• JEPLAN: Japanese circular-economy company operating the BRING brand, recycling used clothing into new polyester and cotton fibers. Most direct Japanese peer to Green Flag: targets the same textile-to-material recycling value chain, addresses the same enterprise ESG procurement narrative, and serves overlapping Japanese apparel and corporate customers.

Peers

• Toyobo Co., Ltd.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/greenflag_corp
• Instagraminstagram.com/greenflag_rf

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 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 Green Flag