T
TBM Japan
Limestone-based alternative material to plastic and paper
About TBM Japan
TBM Co., Ltd. is a Japanese unicorn company founded in 2011 by Nobuyoshi Yamasaki, who serves as the CEO. Yamasaki started his first business in his 20s and was inspired to create a globally competitive company with a long-term positive impact. The Great Hanshin Earthquake in his youth and the Great East Japan Earthquake shortly after TBM's founding solidified his commitment to creating a business that contributes to society, leading to the establishment of a plant in a disaster-affected area.
The company develops, manufactures, and sells sustainable materials as alternatives to traditional paper and plastic. TBM's flagship product is LIMEX, a composite material made primarily from limestone (calcium carbonate) and a small amount of polymeric resin. This innovative material, patented in over 40 countries, can be used to manufacture products typically made from paper or plastic, such as packaging, bags, business cards, and containers. LIMEX production significantly reduces water and wood pulp consumption compared to paper and lowers petroleum-based plastic usage and CO2 emissions compared to conventional plastics. The material is also noted for its durability, water resistance, and stable pricing due to the global abundance of limestone.
Expanding on its circular economy goals, TBM introduced CirculeX, a high-performance recycled material containing over 50% post-consumer recycled plastics. Developed using TBM's proprietary compounding and melt-kneading technology, CirculeX is engineered to overcome common issues in recycled plastics like reduced strength and unpleasant odors. It reportedly offers superior bending and impact strength compared to both conventional recycled materials and virgin plastics, making it suitable for demanding applications in construction, logistics, and automotive parts. Through its material recycling business, TBM operates one of Japan's largest plastic recycling plants in Yokosuka, processing LIMEX and plastic waste to produce recycled pellets.
TBM's business model is centered on a "sustainability revolution," operating across five main areas: Carbon Capture and Utilization (CCU), material development, product sales, material circulation, and new ventures like AI training. The company sells its materials and products to over 10,000 companies and municipalities. Having raised significant funding, including a notable $124 million Series D round, TBM is valued at over ¥136 billion ($868 million) and is preparing for a potential IPO.
Source: Dealroom company dataAt a glance
- Status
- Operational
- Founded
- 2011
- Headquarters
- Tokyo, Japan
- Employees
- 101
- Open positions
- None listed
- Dealroom signal
- 73.1/100
- Industry
- Energy
- Sub-industry
- Waste Solution
- Sector
- Energy, Waste Reduction, Sustainable Development Goals, Advanced Materials, Climate Tech, Circular Economy, Hard Tech, DT and LS, science-based
- Technology
- Deep Tech
- Business model
- Manufacturing
- Client focus
- b2b
- Investment activity
- 1 company, latest Dec 2018
- Capital deployed
- —
- Preferred round
- ACQUISITION
Knowledge graph
More headlines
Funding history
Company financing events and reported valuations.
| Deal type | Date | Amount | Valuation | Investors | Source |
|---|---|---|---|---|---|
| SUPPORT PROGRAMOther financing | Mar 2024 | $0 | — | Global Hypergrowth Tokyo | ↗ |
| LATE VCOther financing | Jul 2021 | $104M | $416M | SK Group | — |
Growth signals
Latest recorded traffic for TBM Japan is 27K monthly website visits, down 3.6% over the last three months. TBM Japan's team declined 2.9% over the past year.
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Investments and acquisitions
Recent portfolio relationships for companies that also act as investors or acquirers.
BioworksTokyo, JapanPlant-derived synthetic fibers replacing petroleum-based plastics
$4.6Mvaluation
Investors
From Dealroom's funding and investor records, grouped by the round each investor first entered.
Series B and later13 investors entered at this stage
UBS
NEDO
ITOCHU
Dip
Sanyo Chemical Industries
JR East StartUp
Dentsu
Dcm
Yakuodo
Aderans
Nippon TV
Shima Seiki
SK Group
Other known investors2 additional known investors
Global Hypergrowth Tokyo
J-Startup
Source: Dealroom Talent Intelligence.
Global footprint
team presence
Market sentiment
An AI-synthesised read of the highest-engagement posts about TBM Japan on X, ranked by likes and reposts, corporate channels excluded.
Reading the room on X — pulling top posts and synthesizing themes…
Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour
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