Yasui Seiki

Name

Yasui Seiki

Legal name

株式会社康井精機 (YASUI SEIKI CO.,LTD.)

Website

https://yasuiseiki.co.jp

Company type

Private

Founded year

1979

Operating status

Operating

Headcount range

11–50 employees

Ownership category

akta.pro rank

Product category

Industrial coating machinery

akta.pro primary industry

Surface Treatment & Finishing Equipment (Coating, Plating, Deburring, Shot Blasting) (IMAHADAJ)

Keywords

• Precision coating machines
• Microgravure coating technology
• Roll-to-roll coaters
• Slot die coating equipment
• Thin-film coating machinery

Headquarters

HQ city

Ebina

HQ country

Japan

HQ region

Asia

Offices8 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Custom Coating Machine Manufacturing & Sales: Design, manufacture, and sale of fully custom roll-to-roll coating machines (coaters) tailored to customer specifications. Machines range from development/test scale to full production scale. Lead times of 6-18 months for custom machines.
2. Semi-Custom/Package Coating Machine Sales: Sale of standardized/semi-custom coating machines including Mini Labo, μCoater, βCoater, TRI Coater, and Mini Labo DX. Prices start from 3 million yen. Shortest delivery of 3 months for package models.
3. Original Slot Die Design & Manufacturing: Custom design and manufacture of slot die nozzles using fluid analysis, coating simulation, and proprietary tools. Includes design, simulation, and fabrication of original slot dies.
4. Maintenance, Repair & Modification Services: After-sales maintenance services including device inspection, refurbishment, control system upgrades, parts replacement, modification, and relocation services. Professional staff provide ongoing support.
5. Coating Services (via Related Companies): Coating prototyping, testing, and commissioned production services are provided through related companies Labo Co., Ltd. and Mirwec Coating (US). This includes slurry development support, annealing, and toll coating.

Pricing tiers

Go-to-market motion3 records

Distribution channels4 records

Marketing channels6 records

Core offering

Yasui Seiki is a Japanese specialty manufacturer that designs, engineers, and builds precision coating machines (塗工機/coaters) for industrial thin-film coating. Its portfolio spans fully custom production coaters, semi-custom package machines (Mini Labo, μCoater, β-Coater, TRI Coater, Mini Labo DX, TC-2), the Microgravure™ retrofit coating unit, custom-designed slot die heads, and supporting services such as maintenance/upgrades, custom slot die design with simulation, and toll/prototype coating via its Labo and Mirwec subsidiaries. Core differentiating technology is the proprietary Microgravure™ coating method, complemented by slot die, knife coating, superheated steam drying, and annealing.

Product overview

Yasui Seiki is a coating machine (塗工機/ Coating machine) manufacturer specializing in custom and semi-custom precision coating equipment. The product portfolio centers on microgravure coating technology (their core patented technology) along with slot die and knife coating methods. Main products include: (1) Production Coaters - fully custom large-scale machines for MLCC, LIB batteries, optical films, displays; (2) Test Coaters - custom-built development machines; (3) Mini Labo DX - semi-custom medium-sized machine; (4) μCoater - versatile small model; (5) TRI Coater - multi-method package model with 3 coating types; (6) β-Coater - sheet-type knife coater; (7) Mini Labo - desktop ultra-compact model; (8) TC-2 - demonstration/production base model; (9) Microgravure Unit - coating head for existing lines; (10) MLDX PSC edition - perovskite solar cell specialized machine; (11) Dual-sided Coating Machine - new technology verification system. Services include coating testing, custom slot die development with simulation, annealing/curing processing, superheated steam drying, maintenance, and slurry development support.

Differentiator

Problem solved

Functional benefit

Brands

• STUDIO YS: Free coating test studio operated by Yasui Seiki at its 6th factory in Ebina, Kanagawa, offering coating tests using Mini Labo DX, TRI-coater, μCoater, and βCoater machines.
• Mirwec Coating

Products and services

• Mini Labo (ミニラボ) - Desktop ultra-small coating machine Tabletop/ultra-small desktop coating machine using microgravure method; functions as the entry-level package model that lets customers move up from manual coating or do testing overseas; compatible with household power supply.
• μCoater (μコータ) Multi-purpose compact coater usable for testing and quasi-production; microgravure coating method excels at thin-film coating; NMC-350 and NMC-650 models available with different widths and optional slot die, 150°C temperature upgrade, UV irradiation, lamination unwind, and corona treatment options.
• β-Coater (βコータ) - Sheet-type knife coating machine Sheet-type knife coating machine for simple manual coating; uses linear servo motor drive and micrometer gap control to deliver precision and reproducibility while preserving manual coating ease; achieves 20–200μm or more coating thickness (Patent No. 5442289).
• TRI Coater (トライコータ) Multi-method package coating machine combining microgravure, slot die, and knife coating in one unit; max 180°C drying temperature with built-in tension controller; compact test coater for thick coating.
• Mini Labo DX (ミニラボDX) Low-price semi-custom coater with high customization freedom; supports both microgravure and slot die coating, with multiple customization options including dip coating, larger guide rolls, UV systems, drying oven expansion, corona treatment, and lamination unwind.
• TC-2 - Demonstration / production base model Flat-type production coating machine base model for MLCC production and custom machines using slot die coating method for thin to medium films; demo testing available.
• Microgravure™ Unit (マイクログラビア ユニット) Standalone retrofit unit that adds Microgravure™ coating method to existing coating lines; maximum coating width 2,650mm; current 3rd generation with improved doctor rigidity and resonance resistance.
• Production Coater (生産用コータ) Fully custom-built production coating machines for MLCC, LIB electrodes, optical materials, displays, flexible substrates, fuel cells, and other applications, with multiple coating methods available.
• Test Coater (テスト用コータ) Custom-built test coating machines made to order per unique customer requirements; supports integration of UV devices, corona processors, web cleaners and other ancillary equipment.
• MLDX PSC edition - Perovskite Solar Cell Dedicated Development Machine Perovskite solar cell dedicated development machine based on the Mini Labo DX platform; supports various perovskite coating condition settings, R2R transition, and small sample production.
• Original Slot Die Design & Manufacturing Service Bespoke design and fabrication of original slot die nozzles using fluid analysis, proprietary coating-simulation tools, and advanced machining; includes design, simulation, and fabrication steps aligned to customer coating processes.
• Maintenance, Repair & Modification Services After-sales maintenance services for installed coaters, including inspection, refurbishment, control panel/part updates, modification, machine relocation, and consultation on modifying non-Yasui equipment.
• Coating Prototyping & Toll Coating Services (via Labo/Mirwec) Prototyping, commissioned coating production, toll coating, annealing/curing processing, and slurry development support delivered through group subsidiaries Labo Co., Ltd. (Japan) and Mirwec Film/Mirwec Coating (USA).

Quantifiable outcome

• Film thickness uniformity of ±2% achieved with microgravure coating
• +4 more outcomes

Named customers2 records

Segments5 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature10 records

Partnerships

Six partnerships are on record, tiered core and minor.

• 株式会社ラボ (Labo Co., Ltd.)coreStrategic or Co-development PartnerRelated company providing coating services including prototyping, toll coating, annealing, and R&D support. Operates Ayase Research Institute (R&D center with Studio YS showroom), Omura Research Institute, and Ayase Development Research Institute. Also offers slurry development support and commissioned development/production. Since October 2017, Labo has taken over coating service operations from Yasui Seiki's Omura Research Institute.
• Mirwec Film Inc. (Mirwec Coating)coreChannel Partner/ Reseller/ DistributorUS subsidiary (Bloomington, Indiana) handling all North/Central American sales, coating services, and demonstrations. Acquired by Yasui Seiki in September 2003. Operates cleanroom (Class 1000) facility with IS700 coater. Also hosts US showroom with Mini Labo, μCoater, and βCoater demonstration units.
• YASUI SEIKI CO. (USA)coreChannel Partner/ Reseller/ DistributorUS subsidiary company handling Yasui Seiki equipment sales in the American market. Established February 1991. Led by CEO/Taku Kusano who also serves as CEO of Mirwecfilm Inc.
• MIRWEC社 (Acquired from Mitsubishi Rayon)minorStrategic or Co-development PartnerAcquired in September 2003 as part of Yasui Seiki's expansion into the North American market. Combined with Yasui Seiki's US operations to form Mirwec Film Inc.
• HD MicroSystems (Resonac/DuPont joint venture)minorStrategic or Co-development PartnerCustomer and development partner using Yasui Seiki's Mini-Labo™ DX RL150 to successfully develop liquid polyimide precursor for semiconductor packaging that can be coated using MICROGRAVURE™ and cured below 150°C.
• 湘南ベルマーレ (Shonan Bellmare)minorGTM or Marketing PartnerJ-League professional football club. Yasui Seiki serves as official club partner (since 2018). Partnership supports regional community engagement and brand visibility.

Scale indicators8 records

Recent moves10 records

Expansion highlights5 records

Direct peers

• Kroenert GmbH & Co. KG: German producer of coating and laminating machines for films, paper, and foil. Competes directly with Yasui Seiki in roll-to-roll custom production coating lines, especially for industrial and packaging film applications.
• FOM Technologies: Danish maker of roll-to-roll coating and surface treatment equipment with strong focus on solar (perovskite, CIGS, OPV) and flexible electronics. Directly comparable as a younger R2R coater specialist pursuing similar end markets including perovskite.
• Mathis AG: Swiss lab-scale and pilot coating machinery maker (e.g., K-Control Coater, LTE-S). Overlaps with Yasui Seiki's Mini Labo, μCoater, and βCoater product lines for R&D and small-batch thin-film coating customers.
• Coatema Machinery GmbH: German specialist in custom roll-to-roll coating and pilot lines for printed electronics, batteries, and fuel cells. Highly comparable as a direct competitor in custom R2R coating machine design and manufacture for thin-film applications.
• Hirano Tecseed Co., Ltd. Japanese coating, drying, and laminating equipment manufacturer for films, battery separators, and optical films. Direct domestic peer to Yasui Seiki in custom roll-to-roll production coaters, especially in LIB separator coating.

Broad incumbents

• Toray Engineering Co., Ltd. Subsidiary of Toray Industries; provides custom coating, drying, and film-processing production systems across electronics, displays, and batteries. Overlaps with Yasui Seiki in production coating lines but offers a much broader industrial portfolio.
• Hosokawa Micron Group: Japanese industrial equipment group with coating, drying, and powder/particle processing capabilities. Larger and more diversified than Yasui Seiki, with overlapping customers in functional film and battery materials.
• Bühler Group: Swiss process-engineering conglomerate with film-coating and wet-processing equipment. Overlaps at large-scale functional film production lines where Yasui Seiki is also active, but operates much more broadly across food and process industries.

Emerging players

• nTact (Semblant): Developer of slot-die and advanced coating equipment for semiconductor and display thin-film applications. Adjacent technology overlap with Yasui Seiki's slot die offering, especially in semiconductor packaging.

Regional players

• SUNG AN Machinery (SAM): Taiwanese roll-to-roll coating, laminating, and slitting machinery maker serving Asian film and electronics manufacturers. Compares to Yasui Seiki's custom production coaters but concentrated in Greater China/Southeast Asia customer base.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/channel/UC_3uyJeBAf94YkAuKe0h-pA

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries5 records

Funding overview

Funding rounds

Investors

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

M&A1 record

Investments

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

Frequently asked questions about Yasui Seiki