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Stewart Engineers, Inc

12316 Hampton Way Drive Suite 200, 27587 Wake Forest, NC
Telephone +1 919 4359100
Fax +1 919 4359101


Brant Cording

+1 984 237 7016


Eric Seagroves

+1 984 237 7011


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Our range of products

Product categories

  • 01  Glass production/Production Technology
  • 01.05  Forming for flat glass
  • 01.05.01  Float glass technique
  • 01  Glass production/Production Technology
  • 01.14  Photovoltaic production/Production Technologies
  • 01.14.01  Wafer production
  •  Coating systems
  • 06  Contracting, consulting, engineering, services

Contracting, consulting, engineering, services

Our products

Product category: Float glass technique

StewartFloat® Tin Bath For Float Glass Production

Why StewartFloat®?
With over 30 years of experience and all 23 StewartFloat® Tin Baths still operational, Stewart Engineers is the worldwide leader in float bath technology.

StewartFloat® Tin Baths have several advantages:
Thicknesses ranging from ultra-thin to ultra-thick
Custom ribbon width
Tonnage ranging from 50 to 1200 per day
Custom levels of automation
Excellent optical quality glass

StewartFloat® Tin Baths are designed to allow seamless integration of Stewart Engineers' AcuraCoat® CVD glass coating system, resulting in several advantages:
Optimized system layout
Advanced temperature control and stability
Enhanced atmosphere control and segregation
Advantages of AcuraCoat® glass coating systems include:
Significantly lower capital costs than sputter coating technology
Significantly lower operational costs
The AcuraCoat® allows the use of single pane glass, while sputter coating technology requires two.
Eliminates edge deletion of Insulated Glass Units (IGUs)

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Product category: Contracting, consulting, engineering, services

Turnkey General Contracting

What We Do
Stewart Engineers specializes in helping new entrants to float glass manufacturing succeed. With 35 years of expertise, Stewart Engineers can make the introduction into this industry quick and easy. Stewart uses comprehensive experience to design and build float glass factories that maximize profit and generate significant returns on capital investment.

Technical Specifications
Glass Composition:
- Soda Lime, Low Iron, Tinted, Borosilicate, Aluminosilicate
Tonnage Range:
- 50 to 1200 metric tonnes per day
Tonnage Control:
- Two automatic redundant tweels
Glass Thickness Range:
- 0.4 to 25mm
Plant Operating Costs:
- Optimized to local market

Plant capacity, location, product mix, product quality, and equipment selection are just a few turnkey float glass factory parts that work together to affect the profitability of a float glass facility. At Stewart Engineers, a team of dedicated employees works to sort through all possibilities, and come up with the most profitable turnkey factory, tailored for each individual customer.

Combining experience with the best engineering techniques means Stewart Engineers products not only perform as efficiently and effectively as possible, but are also highly reliable. Stewart's international project management and procurement experience results in facilities that are built with quality, on budget, and on schedule.

Next Steps
Feasibility studies are the first step towards float glass success. These studies forecast long-term profitability, determine potential customers, provide projections and more. Furthermore, if you purchase a feasibility study, we will credit the entire cost towards the down payment of a turnkey float glass facility. Email us directly to get started on the path to float glass success.

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Product category: Coating systems

AcuraCoat® Coating Technology (CVD)

Protective Anti-Viral Coatings with AcuraCoat®
Stewart Engineers' AcuraCoat® CVD (Chemical Vapor Deposition) system deposits a very thin layer of Titanium Dioxide (TiO2) onto glass, transforming standard glass into an anti-viral, high margin product. Typical uses include sneeze guards, dividers, counter tops, appliances, windows and more. Whether it's flu season or Covid-19, TiO2 will help prevent the spread of disease.

The Stewart coating's protective properties eliminate the spread of many microbial organisms, converting ordinary flat glass into:
AcuraCoat® Hot Integration
Shutting down a float line is an extremely costly, time consuming, and energy intensive process. Fortunately, it is possible to retrofit any existing float bath to accommodate the state-of-the-art AcuraCoat® CVD glass coating system. The float line will remain operational with virtually no interruptions to production.
Profitability of AcuraCoat®
Using the AcuraCoat® CVD system yields higher margins on coated glass products when compared to non-coated or sputter coated glass products. As an added benefit, no ribbon interruption means float lines will remain profitable throughout the installation process.

AcuraCoat® CVD systems are far more profitable than Sputter Coat counterparts for several reasons:
Significantly lower capital costs
Lower manufacturing costs
Less expensive chemistry
Uses less power/energy
Single pane coated glass use
Eliminates edge deletion
Higher yields
Unmatched throughput
Increased shelf life, scratch resistance, and stain resistance

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About us

Company portrait

Founded in 1986, Stewart Engineers is a world leader in the design, fabrication, and operation of its proprietary glass technologies. We are the only provider of turnkey float factories with CVD Systems. Stewart Engineers has designed and built 23 tin baths and 6 CVD coating systems to date. With headquarters in North Carolina and operations around the globe, Stewart Engineers designs cutting-edge glass making and coating technology and arranges for local licensed civil engineering firms to actualize these designs in the countries where we do business.

Stewart Engineers was founded by Les Stewart. The company began by supplying general engineering services and concurrently initiated development of tin bath technology. In 1987, a full design was finalized and soon after sold to Muliaglass. Construction commenced in 1989 for the first StewartFloat tin bath in Jakarta, Indonesia, that is still in operation today. In the 1990s, repeat orders were quick to follow as Indonesia, France, and China each commissioned new float facilities utilizing the StewartFloat® tin bath.

Stewart Engineers expanded over the next decade with 13 bath installations in seven different countries including Iran, China, Italy, Russia, Turkey, India, and Saudi Arabia. Key milestones for StewartFloat® baths included the production of ultra thin glass for electronics applications and ultra thick glass for architectural applications. In addition, 2005 brought the development of Stewart’s AcuraCoat® online pyrolytic coating technology to deposit Low-emissivity, reflective, solar control, photovoltaic, and self-cleaning products. Two AcuraCoat® orders followed in 2006 for the production of Low-Emissivity and solar control coatings.

Stewart Engineers design and technology are implemented in the turnkey construction of a 600 MTPD float factory in Kyzylorda, Kazakhstan. This factory will feature the latest and most advanced tin bath and CVD coating technologies in the world.

Company data

Foundation 1986
Area of business
  • Glass manufacture/production technology
  • Glass processing and finishing
  • Process control technology for glass and glass-processing machines

Company information as a PDF file