Gaining The Edge with Glass-Ceramic
It’s clear why consumers appreciate large glass windows in ovens — the larger, the better. But striking a balance between what buyers want from their appliances and what is possible can present a challenge for designers and engineers.
Ovens with large windows are the preference of home chefs, who appreciate being able to keep an eye on dishes. Doors with larger windows are also impressive from a design standpoint. Of course, consumers also want the ovens to be safe and easy to clean.
Larger Glass, Greater Challenges
Challenges face appliance designers trying to expand an oven’s viewing window. Chiefly, larger glass windows lead to a wider temperature gradient. The solution must be a special material, especially for the window package’s innermost layer, that can withstand thermal stress — under all conditions and over the long term.
While soda-lime glass is the standard material for inner oven doors due to its cost efficiency, when it comes to edge-to-edge glass designs, its performance under high thermal stress is simply too limited.
SCHOTT Glass-Ceramic Transcends Limits
Designers have found an answer in SCHOTT glass-ceramic. It’s characterized by its high thermal resistance, superior thermal expansion and exceptionally high temperature gradient. It sets a new standard for safety, reliability and performance in large, inner oven windows.
For enhanced performance, a low-e coating can be applied to the inner middle plane, one that is specifically designed for use in oven doors with pyrolytic or conventional ovens.
SCHOTT Flat Glass coatings provide outstanding heat reflectivity for inner doors. The low-emissivity coatings reduce heat loss across all temperature ranges, increasing overall energy efficiency and simplifying construction of the oven doors.
Living Up to the Promise of Inner Beauty
SCHOTT edge-to-edge glass-ceramic is suitable for almost any type of oven, from ovens that are recessed into the wall to models that are free-standing, gas or electric. It allows designers flexibility to realize larger windows with fairly low weight, matching the inner beauty with exterior style.
Moreover, edge-to-edge glass-ceramic takes the worry out of daily use. The material is extremely resistant to impact, scratches and breakage.
A Self-Cleaning Solution
Consumers who look for ovens that are easy to clean will appreciate the addition of SCHOTT Cool Print, which improves heat reflection during a pyrolytic cleaning process. This reduces the outside temperature of the oven door, and shortens the wait for the oven to preheat.
Finally, Cool Print is an attractive alternative to metallic tape. Pairing this with glass-ceramic, SCHOTT provides a complete solution for edge-to-edge inner oven doors.
Matching Form with Function
Beyond its beauty and cooking capabilities, edge-to-edge glass-ceramic offers a functional edge by preventing heat leakage.
With metal-to-metal design, heat passes through the glass via thermal radiation. Any metal exposed to heat from inside the cavity can be conducted to the outside of the glass. Also, convection heat circulated from inside the oven cavity can escape through gaps in the oven assembly.
By sealing the metal to glass, the SCHOTT solution stops conduction and convection heat loss, thanks to glass-ceramic. A low-e coating applied to the soda-lime glass in the middle pane provides a heat barrier and stops radiation heat loss. These are functional solutions by SCHOTT that meet UL 2020 standards, making larger inner oven doors safer and more efficient.
SCHOTT Provides a Competitive Edge
With the right materials, the kitchen becomes a safe, warm and welcoming space, where consumers’ focus can be on cooking, not cleaning. It means any time in the kitchen can be better spent creating lasting memories.