Vetter Ultra Flat Bags STec 10 bar (145 psi) - Manual (Page 7)

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Temperature resistance of Ultra Flat Bags S.Tec :
Cold resistance -40 °C
Cold flexible -20 °C
Heat resistance long-term +90 °C
Heat resistance short-term +115 °C
The aramide layer on the Ultra Flat Bags S.Tec
can be damaged by damage made to the
bag surface, e.g. cuts, cracks, punctures or
by the effects of ozone.
Therefore with a visual check after every operation, special atten-
tion is to be made to the following types of damage:
9 Damage by separation
9 Damage by cuts
9 Damage by punctures
9 Damage by heat and chemicals
Danger of bursting! If, when carrying out the
check, this type of damage is determined
then the bag is to be immediately taken
out of service. Repair is not possible.
In order to use the maximum lifting power, the total effective area,
i.e. the total area minus the edge area, must be completely under
the load to be lifted and that the bag must be taken to the maxi-
mum permitted operating pressure.
The bag develops a spherical shape (with rectangular or square
base) as the lift height increases. This is the reason why the con-
tact area with the load decreases until at a max. bag curvature
this will be almost zero. The largest lift height of the Ultra Flat Bag
S.Tec will only be reached in the unloaded state.
In case the lifting power produced by the Ultra Flat Bag S.Tec is
not sufficient, depending on the lift height, then a number of
S.Tec Bags can be placed next to each other.