- We can transform a greenfield into a float glass facility in 24 months.
- Our layouts are the most effective in the industry.
- Our equipment uses the latest technology.
Stewart Engineers can help you quantify risks and ensure financial feasibility before investing in glass manufacturing. Investing in float glass is challenging for new entrants. How can you verify the viability of an idea when there are many sm... Read More→
Stewart Engineers builds high-quality float glass manufacturing facilities around the world. We use our considerable experience in float glass to design and build float facilities that maximize profit. Technologies like the StewartFloat®... Read More→
Glass manufacturers began to use CVD for online coatings in the 1960’s. Pilkington was the first to develop a marketable product, Reflectafloat. Over the lifetime of the product, it was made in both the tin bath and the lehr. Reflectaflo... Read More→
How to turn Sand into Glass The raw material from which glass is made is silica, the most abundant of all the earth's minerals. Milky white in color, it is found in many forms of rock, including granite. And as every beach in the world has been for... Read More→
The final online manufacturing process for float glass is the Cutting and Packing line. The cutting and packing conveyor is immediately downstream of the annealing lehr. It is comprised of special roller sections that are capable of transporting gla... Read More→
What is a lehr? A glass annealing lehr oven- often just referred to as a 'lehr', is a long, temperature controlled, kiln. Lehrs are typically 6m wide and 120m long, with an adjustable temperature gradient through which the glass passes. I... Read More→
Forming Technology Flat glass is manufactured using one of three processes: the sheet process, the plate process, or the float process. The float glass process has, almost entirely, replaced the sheet glass and plate glass processes. Sheet Glass T... Read More→
Glass contains three major categories of constituents - formers, fluxes, and network modifiers. Silicon dioxide (SiO2), or sand, is used as the former and basic constituent with soda ash (Na2CO3) as the flux. Lime (CaCO3) and dolomite (CaCO3MgCO3) a... Read More→
Melting The typical melting furnace is a Six Port Cross Fired Regenerative furnace with a capacity of 500 tons per day. Cross fired regenerative furnaces have been built for very small and very large melting areas. The smallest units may be unecono... Read More→
A variety of techniques are available to deposit thin films onto flat glass. The most widely used of these for producing high-quality functional coatings can be subdivided into two classes: Physical Vapor Deposition (PVD) and Chemical Vapor Depositi... Read More→