The manual COLLIN pressure filter test is used for determining quality differences in a polymer caused by agglomerates, insufficiently dispersed fillers resp. contaminations.
A filter cassette in pre-heating position enables a quick and clean manual filter change without extruder stop. During the filter change, the melt is diverted via a bypass valve in front of the filter.
The material to be tested is melted in an extruder, homogenized and guided through a screen via a melt pump with a defined and constant volume flow. Particles from a certain size clog the screen and thus, the open surface of the screen is decreased. Consequently, the pressure in front of the screen is increasing and determined by a sensor.
Advantages
- Easy and safe handling
- Improved reproducibility by double-chamber hopper
- Little idle times during screen change by cassette system
- Filter change without extruder stop
- Saving of working time due to optionally available double-chamber hopper
Materials
Testing of masterbatches, virgin and recycling materials
Application
- Product development – optimizing colour masterbatches
- Quality monitoring and control
- Incoming inspection and output control of masterbatches, compounds or polymers
Control
Microprocessor control with HMI, function keys and data wheel.
Customers
- Masterbatch manufacturers
- Recycling companies
- Raw material manufacturers
- Compounding and refining companies
- Processing companies
- Universities and institutes
