An amino-epoxy-silane based coating system (GAMAL) for glass surfaces was d
eveloped, which can efficiently protect bottles from the damages of a bottl
ing plant. Testing bottles with a ramp pressure tester show an identical va
lue of about (40 +/- 4) bar for conventionally hot- and cold-end coated bot
tles and bottles coated with the developed organic-inorganic composite (GAM
AL) system. After already 2 min of wet line-simulation testing, all species
of a conventionally coated probe fall short of the critical limit of 16 ba
r, whereas bottles coated with GAMAL (thickness about 7 pm) show a value of
(21 +/- 3) bar. Coating is possible by dip and spray application on cold o
r hot (80 degreesC) substrates, the coating is cured at 120 degreesC for 5
to 10 min. Additional functions such as colour or UV protection can be adde
d easily, without reduction of the protection potential. The low content of
carbon (about 0.5 g per 11 soft drink bottle) should not disturb the recyc
ling process of such coated bottles.