Plate to Gasket Gluing
The glue used for all elastomers (except
Viton and Barriquant plates) is 3M 9323
(bi-compound glue). This glue can polymerize at
room temperature. To speed the curing time MCD
will cure the glue 30 minutes at 120 degree C.
Due the geometry of Barriquant plates use
3M 1099.
Useful Information
Possible Causes from Bad Gluing
Workmanship:
- Discrepancy from horizontal position
- Wrong application of glue
- Wrong fastening of gaskets with tape
- Wrong alignment of plates
- Insufficient guiding of plate stack
- Wrong curing temperature, pressure and
time
- Unsatisfactory tightening during curing
- Uneven temperature distribution in the
case of curing oven
- Too early unloading of pressure on plate
stack (when still hot)
- Careless handling of plates
- Unsatisfactory cleaning prior to gluing
- Unsatisfactory cleaning of gasket groove
- Use of unsuitable cleaning agents
- Too loose tightened of plates pack
Plate material:
- Geometry - deformation
- Pre-treatment (bright annealed surface
for example)
- Insufficient cleaning soiling (airborne
or condense)
Gasket cement:
- The properties do not suit the operating
conditions (liquids, temperature and
pressure).
- The properties do not suit the rubber
quality.
- The properties do not suit the plate
material (corrosion)
- Exceeded shelf life
- Exceeded pot life
- Insufficient mixing
- Bad storing conditions
- Wrong quantities or misdistribution -
special care has to be taken by thin plates
with shallow gasket grooves.
- Insufficient or exaggerated evaporation
of solvent
- Quality error
- Wrong proportion of components in the
case of 2 component glue
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