15
AGC Stopray SMART
–
Processing Guide
–
Version 4.1
–
May 2020
7.8
Packaging
If the heat treated coating is not assembled in an insulating glazing in the same processing factory, the
following recommendations for packaging must be adhered to:
A 1 mm-polyethylene foam spacer
should be placed between each sheet.
The pack of glass should be packaged in watertight plastic. Sachets filled with desiccating agents
should be place inside the packaging.
Care must be taken to ensure that the pack is properly attached to the rack so that the sheets do not rub
together.
The glass will be assembled into insulating glass within one week after it has been toughened.
8
Bending
Bending tests have been carried out in different types of bending furnaces.
The following general recommendations refer to 6 mm Stopray SMART 51/33. Other thicknesses have not
been evaluated as such and require preliminary validation tests by the glass processor. This is
particularly important for glass thicker than 6 mm that will be subject to higher temperatures for a longer
period of time.
The technical values stated (cycle times, temperatures and so forth) were noted during tests on certain
types of bending equipment and obviously depend on the individual characteristics (shape, strength,
convection rate and so on) of this equipment. The recommendations set out here are therefore intended
as general guidelines and preliminary tests must be carried out for each bending furnace.
8.1
Curved annealed glass (on a concave mould)
Only bending ovens with top and bottom heating elements and with an upper convection system are
suitable for bending coatings. The coating of the glass must always be in position 2 (coating in
compression).
All instructions regarding the pre-process (unloading, storage, cutting, shaping, washing and handling)
must
be strictly adhered to
.
The glasses should be shaped to a smooth ground edge.
Place the coating on the concave mould (coated surface facing upwards).
Apply the appropriate packing powder (generally crystalline silica).
Place a sheet of float glass on top.
