Extrusion

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PolyLab PolyLab SystemSystem

• Single Screw Extruders :

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Extrusion Principle:Extrusion Principle:

Drive UnitDrive Unit

FinalFinalProductProduct

PelletizerPelletizer

TakeOff TakeOff DeviceDevice

Feeding Feeding SystemSystem

Extruder Extruder BarrelBarrel

TrainedTrainedOperatorOperator

ExtruderExtruderScrewScrew

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Rheomex single screw extruderRheomex single screw extruder

Feeding coolingSensor ports

(2 standard, others optional)Screw back-pressuresensor (optional)

collars for heating and cooling

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Rheomex ApplicationRheomex Application

Extruders are generally used to:• transport material• plasticize• compress• homogenize• compound• vent• chemical reaction• building up pressure

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Rheomex ApplicationRheomex Application

Measuring of process variables:• torque• melt temperature• melt pressure• mass flow

Optimizing of process parameters:• extruder speed• temperature profile• pressure• screw design

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Optional accessories forOptional accessories for

SSingle screw extrudersingle screw extruders• Various control and monitor panels

• Wear reduced barrel

• Chemical resistant barrel

• Axial force sensor

• Venting port for Rheomex 252p and 332p

• additional sensor ports for melt-temperature and melt-pressure measurement

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Screws for single screw extrudersScrews for single screw extruders

Conical Core Screw

Standard MeteringScrew

Short MeteringScrew

Venting Screw

Mixing Screw

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Screw for single screw extruderScrew for single screw extruder

Rotational direction

Basic material: nitrided steel

screw flights: nitrided and grinded surface

screw flow channel:chrome plated surface

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Pressure builtPressure built--up in a single screw extruderup in a single screw extruder

barrel - length [L/D]

pressureP2

P3P4

P1

P5

11 14,5 20,5 24,50

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Special bimetallic single screw extrudersSpecial bimetallic single screw extruders

• Type 1:for highly filled polymers like:ABS, EVA, LCP, PA, PC, PE, PI, POM, PS, PBTP, PETB, PVC, PP, Thermosets, Phenol resins type: 11, 12, 31Polyester resins type: 801 to 804Rubber compoundsin combination with wear increasing fillers like:minerals e.g. SiO2, CaSiO3, CaCO3metal oxides e.g. TiO2, Fe2O3,ceramic materials Al2O3others e.g. glass fibres, carbon fibres, mica, flame retardants

• Type 2: for corrosive fluorinated polymers like:PTFE, PVDF (with and without fillers)

• Maximum operation temp.: 500 °Cdelivery time: app. 5-6 month

steel barrel

Powder metal insert

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Zone 1(heating/cooling)

Zone 2

Feeding roll

Motor forroll feeder

Sensor ports

feeding rollscrewextruder barrel

rubber strip

Rheomex 104Rheomex 104

for rubber applicationfor rubber application::

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Special single screw extrudersSpecial single screw extrudersfor food extrusionfor food extrusion

è Special grooved extruder barrel:

non-wallsticking material can be extruded

extruderscrew

extruderbarrelgrooves

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• Twin Screw Extruders :

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TwinTwin--screw extruders CTW100 and PTW25screw extruders CTW100 and PTW25

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Feeding of material into Feeding of material into twintwin--screw extrudersscrew extruders

CoCo--rotatingrotating CounterCounter--rotatingrotating

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Twinscrew ExtruderTwinscrew Extruder

CounterCounter--rotatingrotating Rheomex Twinscrew Extruders:Rheomex Twinscrew Extruders:- Defined residence time (good for i.e.rigid PVC)- Selfcleaning- No controlled feeding needed- High shearing- High pressure builtup

CoCo--rotatingrotating Rheomex Twinscrew ExtrudersRheomex Twinscrew Extruders::- Mixing of shear sensitive material (i.e. Polyolefins)- Compounding, Masterbatch production- Venting- Controlled shearing- Flexible screw design- Controlled feeding necessary

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Conical TwinConical Twin SScrew Extrudercrew ExtruderRheomex CTW100pRheomex CTW100p

• conical design of barrel and screws:mechanical stability / easy cleaning

• counter rotating screws:defined resident time / forced material transportselfcleaning

• 6 sensor ports:exact examination of sample behaviourdosing via sensor ports possible

• venting opening:easy venting with venting screws

• 3 different screw geometries:- intensive mixing screws- standard screws- venting screws

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Rheomex CTW100pRheomex CTW100p

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Rheomex CTW100pRheomex CTW100p

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Screw geometries for CTW100p extruderScrew geometries for CTW100p extruder

Venting screw

Intensive mixing screw

Standard screw

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Parallel twinParallel twin--screw extruder Rheomex PTWscrew extruder Rheomex PTWProcessing tasks Processing tasks -- 11

• Plasticising• Mixing• Homogenising• Cooking• Gelling• Degassing of momomers, oligomers, solvents etc.• Concentrating of polymer solutions• Modifying by incorporation of plasticizers,

cross-linking agents, flame retardants, UV-stabilisers, etc.

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• Incorporation of fillers and reinforcing agents such as: wood flour, talc, glass fibres etc.

• Alloying of polymers• Polycondensation, Polyaddition and Polymerization of polymers• Chemical reactions• Dispersing of pigments and additives• Breaking down of high molecular particles

Parallel twinParallel twin--screw extruder Rheomex PTWscrew extruder Rheomex PTWProcessing tasks Processing tasks -- 22

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Parallel twinParallel twin--screw extruder Rheomex PTWscrew extruder Rheomex PTWExamples of Examples of applicationapplication

• Polyethylene (LLDPE/LDPE/HDPE)

• Nanocomposites (Clay, MWCT)• Polypropylene (PP)• ABS• Polystyrene (PS)• PVC (soft)• Polyester• Polyamide• Polyformaldehyde• Cellulose ester• Polyuretthane (PU)• Polycarbonate (PC)

• Food• Starch• Polyphenylene oxide (PPO)• Polysulphone (PSU)• Polyacrylonitrile• Toner• Masterbatch• Powder coating materials• curing moulding compounds• Ceramic materials• Pharmaceutical products• Polymethylmethacrylate (PMMA)

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New PTW16 XLNew PTW16 XL for PolyLab OS

• Horizontal split, with a lift-off top to be opened for ease of cleaning, simple removal of the screws and visualisation of the melting process.

• The segmented top barrel part is built with 4D modules to be easily reconfigured by the user.

• Barrel segments are available for cooling feeding solids, liquids and for venting.

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... ... ... Screw Screw Screw design ...design ...design ...

... ... Feed portsFeed ports......

... Split Barrel... Split Barrel... Split Barrel

Maximum flexibility…Maximum flexibility…

... ... LenghtLenght ......

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flexible flexible screw configurationscrew configuration

Rheomex PTW16Rheomex PTW16

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PTW16 OS PTW16 OS -- Maximum flexibility…Maximum flexibility…

... Split Barrel... Split Barrel... Split Barrel

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PTW16 OS PTW16 OS -- Maximum flexibility…Maximum flexibility…

25 L/D25 L/D

++

15 L/D15 L/D

==

40 L/D40 L/D

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PTW16 XL: 25 + 15D extendable

“what is the right length for my application: L/D 25, or better L/D 40?

… Why don´t you buy two compounders!”

• Flexible Length: not for all applications a long extruder is useful, as shear sensitive materials can degrade and 25D is long enough for basic applications.

• Optional 15D barrel extension to enhance e.g. residence time (for reactive extrusion) or multiple feed ports, easy to use (< 15 min by operator!)

• Software recognizes the Extension unit

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Example: CompoundingExample: Compounding

•• Metering Feeder Metering Feeder for PEEK Pelletsfor PEEK Pellets

••CabonCabon Fiber Fiber Roving (endless)Roving (endless)

••PelletiserPelletiser VaricutVaricut

••T = 380°CT = 380°C

••2020--40% C40% C--Fiber Fiber (wt/wt) (wt/wt)

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Screws:• Segmented, with slip-on

elements, allowing variable configuration

• Screw diameter: 16 mm• Corotating, intermeshing

screws• Screw shafts:

– Design: hexagonal– Material: Heat treated,

abrasion resistant

Technical SpecificationsTechnical Specifications

Rheomex PTW16pRheomex PTW16p

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Screw elements:Screw elements:

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Rheomex PTWRheomex PTW2424pp

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Economic PTW24p modelsEconomic PTW24p modelscomparison to 24 „HC“ typecomparison to 24 „HC“ type

Vacuum venting

Side feed 2 Side feed

mainsecondary feed

Venting toAtmosphere

Or option Liquid feed

PTW24/40p (HC) PTW24/40p (HC) 4D modular 4D modular ElementsElements

PTW24/30p (TC)PTW24/30p (TC)

PTW24/25p (TC)PTW24/25p (TC)

Side feed option

mainsecondary feedVacuum

venting

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• Speed range: 0 - 500 rpm(optional 0-1000 rpm)

• Pressure range: 100 bar (150 bar optional)

• Temperature range: max. 300 °C (400°C optional)

• Screw diameter: 24 mm• Barrel length (L/D) : 28:1 to 40:1 (using the optional

barrel extension unit)

Technical SpecificationsTechnical Specifications


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SidefeedingSidefeeding

SegmentedSegmented screwscrew

Extruder Extruder barrelbarrel: : segmentedsegmented and and hingedhinged

Rheomex PTW24p Rheomex PTW24p –– Advantages:Advantages:

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Bore diameter: 24 mmScrew Centres: 18.75 mmChannel Depth: 5.2 mmClearance: 0.2 mmTotal barrel length: 672 mm.

(28:1 L/D, in 4:1 modules)Barrel extendable to 40:1 lengthwith optional barrel extension

Feed Zone: Water CooledProcessing Zones: Electrically Heated / Water cooledExtrusion Die: Electrically heated

Technical Details:Technical Details:


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Screw elements:Screw elements:

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Parallel twinParallel twin--screw extruder Rheomex PTWscrew extruder Rheomex PTWScrew segments 1/3Screw segments 1/3

• Profiles with open chambers are used:

- in the feeding sections - for melt exchange (longitudinal mixing)- for degassing (venting)

• Profiles with closed chambers are used:

- for high pressure built up- in front of kneading elements

Conveying elementsConveying elements::

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Parallel twinParallel twin--screw extruder Rheomex PTWscrew extruder Rheomex PTWScrew segments 1/3Screw segments 1/3

Conveying elementsConveying elements::

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Parallel twinParallel twin--screw extruder Rheomex PTW25screw extruder Rheomex PTW25

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• Kneading blocks are used to introduce shear energy to the extruded materials.

• 5 disks are arranged in a block and arranged in different offset angles used for:

- plasticizing- mixing- dispersing

Parallel twinParallel twin--screw extruder Rheomex PTWscrew extruder Rheomex PTWScrew segments Screw segments 22/3/3

Kneading blocks Kneading blocks ::

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Parallel twinParallel twin--screw extruder Rheomex PTWscrew extruder Rheomex PTWScrew segments Screw segments 22/3/3

Kneading blocks Kneading blocks ::

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Mixing elementsMixing elements

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• Toothed blocks are special mixing elements, used for the distribution of even small quantities of additives.

• The shearing energy introduced to the polymer is significantly lower than that of the kneading elements.

• The open worked flights of the mixing discshave a special asymmetric design.

Parallel twinParallel twin--screw extruder Rheomex PTW25screw extruder Rheomex PTW25Screw segments Screw segments 33/3/3

Toothed blocks Toothed blocks ::

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Parallel twinParallel twin--screw extruder Rheomex PTW25screw extruder Rheomex PTW25Screw segments Screw segments 33/3/3

Toothed blocks Toothed blocks ::

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Application:

Feeding of glass fibres, fillers or other additives into the molten polymer.Venting of the introduced air.

Requirement:

2 separate feeders necessary for side feeding.

One side stuffer with constant (high) dosing speed to press the material into the barrel.

One feeder to controll the feeding rate.

For constant feeding ratio between polymer and additives gravimetric controlled feeders can be used.

Rheomex PTW Rheomex PTW SideSide--feedingfeeding

VentingVenting

Flow directionFlow directionSide feedingSide feeding

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557557-- 5001 Rheomex PTW 25 x 20D5001 Rheomex PTW 25 x 20D

Barrel segments:

Feeding barrel 4DClosed barrel 6DOpen barrel 6DMeasuring barrel 4D

Application:

Melting of polymersVenting

FeedingVenting

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Barrel segments:

Feeding barrel 4DClosed barrel 6DCombi barrel 4DClosed barrel 4DOpen barrel 6DOpen barrel 4DMeasuring barrel 4D

557557-- 5031 Rheomex PTW 25 x 32D5031 Rheomex PTW 25 x 32DPProductionroduction of of MMasterbatchasterbatch

Material Shape Quantity in%

PP, PE, PET,PC, PA,etc.

powder orgranulates

60 - 80

pigments powder 20 - 40

Side-feeding(pigments)

Venting(vacuum)

Venting(atmosphere)

Venting(atmosphere)

Feeding(polymer)

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Screw configuration Rheomex PTW25/38Screw configuration Rheomex PTW25/38

FFor typical food extrusionor typical food extrusion

25/1/2

37.5/1/2

37.5/1/2

37.5/1/2

37.5/1/2

37.5/1/2

25/1/2

25/1/2

25/1/2

ZB-37.5

25/1/2

25/1/2

E-KB

-25/LI

25/1/2

25/1/2

E-KB

-25/LI

25/1/2

25/1/2

E-KB

-37.5/LI

25/1/2

25/1/2

E-KB

-37.5/LI

E-KB

-37.5/LI

37.5/1/2

37.5/1/2

37.5/1/2

37.5/1/2

37.5/1/2

25/1/2

25/1/2

25/1/2

Screwtip

Dry-BlendLiquidsSteam

FeedingMixing/HydrationCookingVentingCooling

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MasterbatchMasterbatch productionproduction

Vac

uum

Prem

ix

Atm

osph

ere

Parallel twin-screwWater bath Pelletizer

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• Feeding systems :


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Metering FeederMetering Feeder

Motor with gearbox

StandardHopper

Closure for Cleaning

glass window

interchangeablefeeding tube

Metering screw

Extruder

PPrinciplerinciple sketchsketch::

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MeteringMetering FeederFeeder ((adaptedadapted to PTW25p)to PTW25p)

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• Accurate dosing of powder

• Accurate dosing of pellets

• Starved feeding to enable venting

• Starved feeding to reduce torque

• Production of masterbatches

• Feeding of parallel twinscrew extruders

ApplicationApplication::


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• compact design: easy to handle

• wide feeding range

• various inserts: suitable for pellets and powder

• control box: speed control via Rheocord or manual speed control via potentiometer

• easy to combine with a second metering-feeder for controlled compounding

Features & benefits Features & benefits ::


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Motor withstepless

speedcontrol

Hopper

ExtruderScrew

Extruder Barrel

ForceFeedingScrew

Application:

• feeding of sticky materials:- food extrusion

• feeding of bridge-building materials- some PVC Dry Blends

• feeding of not flowing material- grinded film- soap powder

ForceForce FeederFeeder

PPrinciplerinciple sketchsketch::

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• Extruder Application :


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Cast film applicationCast film application

• Instruments:• Rheocord 300p• Extruder (single- or

twin-screw extruder)• Screws• Sheet & ribbon die• Sheet & ribbon take-off• Pressure sensor• (Screen package)• (OQT 512)

• Application:• Small production of films• Testing the processabillity • Testing of additives• Testing and optimisation of

processing conditions

• Results:• Fish-eye testing• Pigment distribution• Surface quality• Tensile testing• Weathering

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Sheet and Ribbon DieSheet and Ribbon Die

è Die width:25/50/100/150 mm

è Die gap:adjustable(standard: 0.2-1.2 mm)

è fixed die gap on request

è Max. temperature: 360°C

è 1 measuring port

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PVC PVC --DiesDies

•New PVC Slit dies 50mm, 100mm, Height 1mm

•Moldflow (FEM) Simulation

•Optimizied Flow

•Compact design

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Sheet and Ribbon Take OffSheet and Ribbon Take Off

polished and temperablesteel rollers

rubber rollers

circulator

waterbathMotor

adjusting the gap

take-uproller

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New Sheet & Ribbon New Sheet & Ribbon TakeOffTakeOff-- New design to be used with New design to be used with Haake and Prism productsHaake and Prism products

-- Two Options: Two Options: 22--Roll Roll TakeOffTakeOff33--Roll Roll TakeOff TakeOff

-- Easy access to the rollers Easy access to the rollers -- Easy handlingEasy handling-- Height adjustableHeight adjustable-- Adjustable speed ratio between Adjustable speed ratio between the steel rollers and the takethe steel rollers and the take--off rollersoff rollers

New New PostEx PostEx DesignDesign

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PVC sheets: good & bad

Cast film applicationCast film application

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Blown film applicationBlown film application

• Instruments:Rheocord 300pExtruder (single- or twin-screw extruder)ScrewsBlown film dieCooling ringBlown film take-offPressure sensor(Screen package)(OQT 512)

• Application:small production of filmsTesting the processability of compoundsTesting of additivesTesting and optimisation of processing conditions

• Results:Fish-eye testingPigment distributionsurface quality

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557557-- 3175 Blown 3175 Blown FFilmilm DDieie

• Ring diameter 25mm (35mm)• Pin diameter 24mm (34mm)• Gap width 0-0.8 mm• Measuring ports 2• Max. temperature 480°C

Air

adjustable die gap

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PolyLabPolyLab blown film combinationblown film combination

PolyLab System with extruder

Lightning Device

CCD-CameraBlown film take off

WWithith optical testing unit OQToptical testing unit OQT

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OQTOQT-- Graphical display of Graphical display of defectsdefects

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OQTOQT-- Graphical display of the dataGraphical display of the data and and defectsdefects

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CompoundingCompounding

• Instruments:• PolyLab RC300p• Rheomex twin-screw

extruder• extruder Screw(s)• Pressure sensor(s)• (Screen package)• Rod die (horizontal or

vertical) or Multistrand die• Waterbath• Pelletizer

Test results:• Testing of the

processability of polymer compounds

• Testing of additives• Testing and optimisation

of processing conditions• small production of

masterbatches

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557557-- 3235 3235 Horizontal rod dieHorizontal rod die

• Application:Universal die for extrusion tests

• manufacturing of polymer strands for the production of pellets.

• Nozzles available from: 1mm - 6mm

• Two sensor ports for pressure-and temperature-measurement

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557557-- 3150 3150 Vertical rod dieVertical rod die

• Application:Universal die for extrusion tests

• manufacturing of polymer strands for the production of pellets.

• Nozzles available from: 1mm - 6mm

• Two sensor ports for pressure-and temperature-measurement

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Vertical rod die Application ExampleVertical rod die Application Example

• Application:Universal die for extrusion tests, here testing of Processing additives (Dynamar) at Dyneon (NL).

• Build up of non stick layer (right picture) improves the quality.

• The effect and concentration of the processing aid can be tested with various base polymers and temperatures.

EPPM info nr. 34 6,3 / p12 (2004)EPPM info nr. 34 6,3 / p12 (2004)

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557557-- 3180 3180 MultistrandMultistrand diedie

è Application:Universal die for extrusion tests with higher output

è manufacturing of polymer strands for the production of pellets.

è Strand diameter: 3 mm (others on request)

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Pelletizer, optional Pelletizer, optional with with VARICUT: VARICUT: adjustableadjustable lenghtlenght

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Rubber extrusionRubber extrusion

Instruments:• PolyLab RC300p• Rheomex 104p or 203p• Screw(s)• Pressure sensor(s)• Garvey die• Conveyor belt

Test results:• Testing of the processability

of rubber and elastomercompounds

• Testing of the influence of additives

• Testing and optimisation of the processing conditions

• Visual testing of the material flow at edges with different angle

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557557--3230 Garvey3230 Garvey--die die

Technical data:• Die profile according to

ASTM 2230-63T• max. temperature: 360 °C• die profile does not allow to

install sensor ports

Application:• Extrusion of elastomers and

rubber for testing the flowability.

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è Instruments:Rheocord 300pExtruder (single- or twin-screw extruder)ScrewsWire coating dieWire coating take offPressure sensor

è Application:small production of cablesTesting the processabilityof compoundsTesting of additivesTesting and optimisation of processing conditions

Wire coating applicationWire coating application

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557557--3195 Wire coating die3195 Wire coating die

• di: 0.7 - 2.0 mm• da: 0.8 - 4.0 mm• Standard: 1.2 / 2.0 mm• Max. temperature: 480°C• Measuring ports 2

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Fibre spinningFibre spinning

• Instruments:• PolyLab RC300p• Rheomex extruder (single

or twinscrew)• Screw(s)• (Melt pump)• Pressure sensor(s)• Screen package• Fibe spinning die with

spinning plate



• Testing of additives at different formulations

• Testing and optimisation of processing conditions

• small production of polymer fibres

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557557--2376 Spinning Die 2376 Spinning Die

Application:Fiber spinning

Technical data of spinning plate:number of holes: 10diameter: 200 µmlength: 0.5 mmentrance angle: 60°

spinning platebreaker plate

screen package

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MeltpumpMeltpump:: PPrinciplerinciple

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Filter Test ( EN 13900Filter Test ( EN 13900--5 ) 5 )

Instruments:• PolyDrive with Rheomex252• Melt pump• Pressure sensor(s)• Screen package• Filter die

Test results:• Testing the distribution of

fillers and pigments in polymer compounds

• Pressure increase in front of the screen package

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Measurement of the pigment distribution

Testing of the purity of polymers

GeometrGeometry of y of thethe FilterdieFilterdieaccordingaccording to to thethe newnewstandardstandard EN 13900EN 13900--5 5 ((draftdraft))

557557--2413 2413 FilterFilter DieDie

acaccordingcording EN 13900EN 13900--5 (5 (draftdraft))

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HydraulicHydraulic sscreencreen changerchanger

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Filter (Filter (screenscreen life) test life) test EN 13900EN 13900--5 (5 (draftdraft))

Constraints:

Single Srcew extruder: D = 19 – 30 mm, L/D = 20 - 30- 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 13900-5 proposal

Defined breaker plate geometry (free area of filter):- die geometry according to EN 13900-5 proposal

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Purge with 100g base polymerMasterbatchConditioning with base polymer

Pressure increase infront of the filterpackage

Pmax

Ps

Pmax- Ps

ts t te

ts : determination of basepressure Ps and filling of the hopper with masterbatch mixture

t : End of masterbatch mixture and filling of base polymer

te : End of pressure measurement and evaluation of maximum pressure Pmax

Filter Test SoftwareFilter Test Software

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FPV (filter pressure value): Ps:

Pmax:Mc:

c

smax )P-(PFPVm

=

Filter Test:Filter Test: CalculationCalculation according according EN 13900EN 13900--5 (5 (draftdraft))

Filter-Pressure-Value in bar per grams [bar/g]Starting pressure in barMaximum pressure in barPigment weight in gram

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Filter Test Software Filter Test Software –– Evaluation:Evaluation:

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ConfigurationConfiguration::

Filter Test SoftwareFilter Test Software

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Test Report Test Report forfor EN 13900EN 13900--5 (5 (draftdraft))

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Filter Filter packagepackage –– typetype 1 1 ( 25µ )( 25µ )

d = diameter of wirew = distance of two wires

sievepackage type 1, part.no.: 005-0001The 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

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d = diameter of wire w = distance of two wires

sievepackage type 2, part.-no. 005-0002the 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 Filter packagepackage –– typetype 2 2 ( 14µ )( 14µ )

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Pipe extrusionPipe extrusion


or twinscrew)• Screw(s)• Pressure sensor(s)• Pipe or catheter die• Conveyer belt



• Testing of additives at different formulations

• Testing and optimisation of processing conditions

• small production of polymer pipes

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557557--3215 Pipe & Tubing Die3215 Pipe & Tubing Die

• di: 5 - 12 mm• da: 10 - 15 mm• Standard: 9 / 12 mm• Max. temperature: 480°C

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557557--3185 Catheter Die3185 Catheter Die

• di: 1.5 - 7.0 mm• da: 2.0 - 8.0 mm• Standard: 2.4/4.5 mm• Max. temperature: 480°C

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or twinscrew)• Screw(s)• Pressure sensor(s)• Rodcapillary or

rod die• Dieswell Capillary• (Conveyer belt)• Laser Dieswell tester

Test results:• Testing the elastic behaviour

of polymer melts• Measuring the strand

diameter

DieswellDieswell MeasurementMeasurement

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LASERLASER--BEAMBEAM(D)

Capillary (d)

DieswellDieswell MeasurementMeasurement

* 100%Dieswell =

D - d d

detecting elastic polymer behaviour

Extrusion

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