REVOLUTIONARY DRYING CONTROL
According to an American research study, incorrect drying processes are responsible for a large proportion, as high as 80%, of the problems that arise when moulding moisture-sensitive plastic materials.
The problem is usually one of:
In both cases the resulting defects are significant, yet sometimes they are visible and sometimes they are hidden and subtle.
How many hours and how much money do you lose in a year because of incorrect drying?
Unfortunately, the clear majority of driers and dehumidifiers do not provide the ONLY really useful information that should be considered mandatory for the process: the residual moisture content in the granule.
Every material has an upper acceptable moisture limit at which it can be processed correctly, and often has a minimum limit too.
For example, a polyamide 6 can tolerate a maximum moisture content of about 1,200 ppm in order to avoid developing visible or hidden defects (related to under drying), and preferably it should have a minimum residual moisture content of around 400 ppm in order to avoid excessively high increases in viscosity (a result of over drying).
The ONLY important parameter to know is the residual moisture content at the point when material enters the screw of the injection press or the extruder, and this should be compared with the values recommended for each single material.
AT LAST we have a simple and reliable system for evaluating any drying process problems.
A single tool that eliminates both UNDERDRYING and OVERDRYING!
DIRECT INLINE MEASUREMENT
The AQUAFINDER moisture sensor, working in real time, instantaneously and continuously analyses the granule moisture content and expresses this as a percentage value or in ppm (parts per million).
It saves time and money, and also makes it possible to avoid negative results due to inconsistencies and human error.