cracks in the fused Spectrum sheets

Here are some of reasons can caused glass broken after laminating,

1. invisible scratch in glass surface which make each part of glass
unable to shoulder the same force.

2. higher shrinkage of resin interlayer

3. poor flexibility of resin interlayer, which is major reason that
Unilam resin layer made your glass broken.

4. The thickenss of resin nterlayer is too thin.

Besides Uvekol resin is good choice to solve the problem, our clients
mostly use SaoSA resin to laminate glass, which is much more economical
and good quality. site for your reference: http://www.uvxm.com

Good luck!

Tomasz wrote:
I would like to ask you about fusing the Spectrum (mostly Waterglass
and
Baroque on the base made from 100 seedy or 100S). Last time we succed
in
making the rather great work (1 meter to 2 meters). We annealed the
glass
about 20 hours so it has no stress. Then to obtain the more clear
view and
to strengthen it we laminated the fused glass with clear float glass
(using
the Unilam resin and special adhesive tape).
The problem is that sometimes, we don't know why, the fused glass
breaks,
but not during the process of laminating or during the hardening of
resin.
It breaks 2 or 4 days after. We think that this is due to the
shrinking of
the resin (the producer said the shrinking is ca 3%). The back
surface of
the fused sheet is slightly uneven and the thickness of the resin
could
vary a little. This way the force of shrinking is different at some
points.

We think that the solution could be the "non shrinking" resin. But we
don't
know such a product (maybe UV Uvekol?).
I you have any ideas we will be obliged for them.

Best regards
Tomasz
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Tomasz Bielinski
Witraze s.c.
Architectural & Stained Glass
http://www.polbox.com/w/witraze
tel/fax: (48 22) 8720417
ul.Kakolowa 24a,04-848 Warszawa,Poland
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