1 Filter Pressure Value Test according according EN (draft)

2 Instrument: PolyDrive252 Single Screw Extruder Extruder-Screw Melt Pump Pressure Sensors Filterpackage Filterdie or Screen changer Result: Dispersion of pigments and fillers in masterbatches or polymer melts. Quality of disperion is related to the pressure gain in the filter die during the test Filter Pressure Value Test EN (draft)

3 Polydrive Filter Test: Single Screw Measuring Extruder for:: small scale production continous QC and fish-eye testing process & material optimization R&D processing incoming and final QC Filtertest Option: Pressure feedback loop control

4 PolyDrive Filter Test: è è 1.5 kW drive è è 19mm, 25xD single screw extruder (Rheomex 252 type) è è control and monitoring display è è funnel type hopper è è 3:1 standard metering screw è è 1 melt thermocouple è è grease & tools è è optional: pressure feed-back loop The PolyDrive extruder comes as a complete ready-to-use setup with:

5 PolyDrive Filter Test: PolyDrive252Melt pumpFilter Die Speed control via pressure feedback loop

6 Meltpump: Principle

7Meltpump Technical data: Volume:1.2 cm³/r. Speed: rpm Temp. range:350 °C max. pressure:500 bar Bypass valve:included Speed control:by PolyLab System or by included control box Options:volumes: 0.6, 2.4, 3.0, 4.5 cm³/r.

Standard Filter Die Application: Measurement of the pigment distribution Testing of the purity of polymers

9 PolyDrive Filter Test: Suitable for different filter-dimensions Measurement of the pigment distribution Testing of the purity of polymers Suitable for different filter-dimensions

10 PolyDrive Filter Test: Screen Changer: Hydraulic operated Easy to handle Many test per day

11 PolyDrive Filter Test: Swivel Hopper: Fast material change Funnel 1 for purge polymer Funnel 2 for test mixture

12 Filter (screen life) test EN (draft) Constraints: Single Srcew extruder:D = 19 – 30 mm, L/D = PolyDrive 252 Pressure at end of the extruder : constant at 30 – 60 bar - via pressure feedback loop Melt pump:50 – 60 ccm/min - Thermo Haake meltpump Defined meltfilter: - filter geometry according to EN proposal Defined breaker plate geometry (free area of filter): - die geometry according to EN proposal

13 Purge with 100g base polymerMasterbatch Conditioning with base polymer Pressure increase in front of the filterpackage P max PsPs P max - P s tsts ttete t s :determination of basepressure P s and filling of the hopper with masterbatch mixture t :End of masterbatch mixture and filling of base polymer t e :End of pressure measurement and evaluation of maximum pressure P max Filter Test Software

14 FPV (filter pressure value): P s : P max : M c : Filter Test: Calculation according EN (draft) Filter-Pressure-Value in bar per grams [bar/g] Starting pressure in bar Maximum pressure in bar Pigment weight in gram

15 Filter Test Software – Evaluation:

16 Configuration: Filter Test Software

17

18 TEST Report for EN (draft)

19 filter package – type 1 ( 25µ ) Thermo Haake filter package – type 1 ( 25µ ) d = diameter of wire w = distance of two wires sievepackage type 1 („PZ25“), part.no.: The sievepackage consists of layers: 1. layer : W = 0,14 mm, d = 0,042 mm (615/108 mesh) 2. layer : W = 0,63 mm, d = 0,40 mm W d direction of flow layer 1, 2

20 d = diameter of wire w = distance of two wires sievepackage type 2 („PZ14“), part.-no the sievepackage consists of layers: 1. layer : W = 0,13 mm, d = 0,042 mm (615/128 mesh) 2. layer : W = 0,63 mm, d = 0,40 mm W d direction of flow layer 1, 2 filter package – type 2 ( 14µ ) Thermo Haake filter package – type 2 ( 14µ )

21 direction of flow layer 3, 2, 1 d = diameter of wire W = distance of two wires the sievepackage type 3 consists of three layers: 1. layer : W = 0,040 mm, d = 0,071 mm (165/1400 mesh) 2. layer : W = 0,25 mm, d = 0,16 mm 3. layer : W = 0,63 mm, d = 0,40 mm W d filter package – type 3 Thermo Haake filter package – type 3