Measuring coat weight with MoistTech

Posted by: | August 8, 2013 | 0

Measuring coat weights
 
Measuring coat weights is an important factor during paper converting for the precise
control of films, water based adhesives, resins and hot melt glue applications.
Polyethylene, polypropylene and other coatings such as PVC can also be measured
and controlled to a high degree of accuracy. The IR3000 helps control the re moisturizing
process, monitor any additions of adhesive coatings and detect coating defects.
MoistTech’s IR3000 sensor is installed where 100% inspection is required and
quality needs to be maintained to very high standards. Our sensor calibrations,
measurement wavelengths, algorithms and sensor optical requirements are pre-set
at the factory. Typical paper moisture accuracy is ±0.05%, coating accuracy varies
from 0.1 to 0.01 micron depending on coating type. Typical analog range is
0-10% moisture and up to as much as 80%, subject to application. The outputs
can be adjusted to optimize PLC or recording requirements.
optimize PLC or recording
 
In
the paper converting process there are many locations throughout manufacturing
that the sensor can be used. Generally a sensor is located in the most critical
stages in paper converting such as pre-lamination of pressure sensitive
adhesive materials or following re-moisturizing. However, the location is often
determined by the space availability and accessibility on the web/converting
machinery as well as manufactures moisture requirements.
manufactures moisture requirements
 

 

With
coat weight measurements the IR3000 can be installed either at the wet end, where
the coating is being applied or at the dry end, after the dryer or curing process.
Once installed, a manufacturer can continuously monitor the process and can
control the moisture content, either manually or automatically. Additionally,
the sensor can be directly connected to the users PLC or any laptop. Ethernet
and 4-20 ma are included as well as our high-tech Windows operating software.
DPM (Digital Panel Meter) and a Color Touch Screen Operator Interface are also
available as read-out options.

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