Glass Co. Expands Fabrication Capabilities
The Glenny Glass Co. in Cincinnati may have been distributing architectural
and flat glass products since 1851, but the company continues to
keep up with the times by adding on new fabrication capabilities.
The company recently added its first tempering furnace.
According to Braxton Smith, owner of the Glenny Glass Co., the
decision to begin tempering was a response to demand for heat strengthening
high performance glass products. In addition, he says, "It's more
of a litigious society these days so people are thinking let's just
have this glass tempered and so if we have a school kid or somebody
run through it, they won't get hurt."
After considering several machinery options, Smith opted to buy
a high-convection furnace from Cooltemper, the first such product
that the United Kingdom-based company had installed in the United
According to Smith, the product "is basically meant to temper high-performance
low-E products and the high reflectance products out on the market."
From Smith's point of view, high-convection tempering is the most
effective way of working with these coated products. "The newer,
higher performing low-Es are . sputter coated. And those are very
efficient," Smith says. "The problem is, the more thermally efficient
low-E coatings-in the older [radiant] furnaces, they're trying to
heat the glass on up but it's reflecting the heat back out. In the
new high-convection furnaces, you're getting air pressure on the
coated side of the glass and it's forcing that hot air into the
coated surface to temper it."
According to Smith, this can prevent overheating the glass, a problem
he says can lead to roller wave distortion.
Knowing that he wanted a convection furnace, he visited a number
of existing Cooltemper installations in the United States and the
completion of extensive soft-coated glass trials at the company's
manufacturing facility in Taiwan. While the quality and throughput
of the machine were both important considerations, so was service.
Although the manufacturer is based overseas, it has a service center
"They have two full-time service techs, and they fully stock parts
here in the United States," Smith says, an important consideration
for fabricators looking to purchase new machinery.
Installation can be another critical consideration.
"They actually had five technicians in here for about five weeks
installing the furnace from really the day after Christmas up through
about the first week of February. It was a turnkey operation. They
installed inline an 84-inch washer, along with the infeeds to the
washer and the infeeds to the furnace. So they did pretty much everything
turnkey," Smith says.
HERE for more questions to consider when purchasing machinery,
and be sure to look for the Annual Guide to Equipment and Machinery
in the September issue of USGlass.
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