Page 24 - Glass-Technology International no. 2/2017

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JEFFOPTICS
JF-1E GLASS SURFACE STRESS METER

JF-1E glass surface stress meter is applied for non-de- Operator can complete the operation by
structively measuring surface stress of tempered glass and left hand holding it and right hand adjust-
heat-strengthened glass on uncoated tin side. The product ing the knob. The result is shown as soon
complies with ASTM C1279, ASTM C 1048, EN 12150 as the image appears.
and EN 1863. The device is calibrated with ASTM C 1377. If operator wants to print the report, operator can
The measure range is 400MPa. The resolution of full scale use the device with computer. The software provides auto
is about 1.2 MPa. measure, manual measure, record, report and calibration
functions
JF-1E glass surface stress meter measures the glass surface If the report is not mandatory, operation with PDA is rec-
stress by differential surface refractive of polarized light. ommended, because compare with the operation speed of
PDA can give value automatically to reduce human error. PDA, the period of open the computer is trying the opera-
The device is portable, easy operation and robust. tor patience.
With the weight of 0.5kg (as light as an ipad), the device Mr. Marmonier from GMC France (Europe Distributor)
provides operator great convenience and comfortable with- said that the client is very happy that it reduces the work
out any additional support. load of operator
With 3.5” touch screen, operator can complete all the
operations of measurement and set. The PDA rotation is
adjustable with damping hinge, so that operator can change
the direction of PDA in different scenarios such horizontal
position and vertical position. Operator can get the result
by adjust only one knob and PDA can give the surface
stress immediately after getting the image within 0.5 sec-
ond, so that the device never try operator patience.
With its unique feature of refractive method, it can
measure dark glass of low transmittance whereas
other meters cannot.
The device can measure flat glass and bent glass,
white glass and gray glass, architectural glass and
automotive glass. The device can work under
several situations even direct under sunlight.
Operator can work with it in lab, plant, and
field.

SAINT-GOBAIN
ACQUISITION OF AUGUSTDORF

INSULATED GLASS MANUFACTURING PLANT

Saint-Gobain signed the contracts this year, subject to approval by the German window makers for the next
for the acquisition of the North responsible authorities. years.
Rhine-Westphalian plant in August- The acquisition of the modern pro- The transaction is consistent with
dorf (Germany) from Teuto-Glasvere- duction site for thermal insulation the Group’s strategy of expanding
delung GmbH & Co.KG in January glasses, sound-insulation glasses, its range of downstream products
2017. safety glasses, sun protection glasses towards high value-added solutions.
This facility produces high-quality and decorative glasses in the Lippe
insulating glasses. The purchase is district, will allow Saint-Gobain to
planned to be completed in March of consolidate its capability to supply the

22 Glass-Technology International 2/2017