Cflow extrusion plastometer

The compact Cflow extrusion plastometers are designed as a stand-alone instrument for rapid monitoring of melt mass flow rate (MFR). They are primarily used for goods inwards checks at plastics processing plants where extrusion tests are performed on an irregular basis.

Key advantages and features

Advantages and features

  • Temperature control of the heating elements, heating chamber and barrel are all perfectly co-ordinated. The temperature is generated at the location where it is utilized, ensuring excellent temperature distribution over the whole barrel height from the outset.
  • Simplified cleaning, with rapid expulsion of residual specimen material.
    - The die plug is located on the underside of the extrusion barrel. Removing the die plug frees the die to move downwards, allowing it to be removed easily.
    - Expelling the die plus residual material after the test is similarly fast and easy. The barrel is now accessible throughout., simplifying cleaning.
  • The optionally available test weight support allows you to retain the test weight in the pre-heating position.
  • Comprehensive accessory range including automatic or manual extrudate cutter, separating pane and die plug is optionally available.

Range of application

Cflow is a compact instrument for rapid checking of the melt mass flow rate of plastics as per Method A.

It is primarily designed for plastics processors with a less frequent need for extrusion tests and no requirement for connection to a PC.

  • Cflow is intended for MFR tests to Method A. Tests can be performed in accordance with the following standards:
  • Method A as per ISO 1133, ASTM D1238, ASTM D3364, JIS K 7210.

The instrument can quickly be checked using the test granulate included in delivery. It is also possible to check the temperature in the extrusion barrel and the diameter of dies and barrels using plug gauges.

Cleaning

Simplified cleaning, with rapid expulsion of residual specimen material

The die plug is located on the underside of the extrusion barrel. Removing the die plug frees the die to move downwards, allowing it to be removed easily. Expelling the die plus residual material after the test is similarly quick and easy. Cleaning is simplified because the barrel is now accessible throughout. The Pneumatic Weight-lifting with Cleaning Function option also enables simple, convenient cleaning of the extrusion barrel at the touch of a button.

Technical overview

Cflow is designed for MFR tests to Method A and can be used for tests to the following standards: Method A as per ISO 1133, ASTM D1238, ASTM D3364, JIS K 7210.

Technical data for Cflow extrusion plastometers

Description

Value

Type

Cflow extrusion plastometer (230 V)

Item No.

004949

Test load

0.325 to 21.6

kg

Dimensions

Height with all weights

850

mm

Width

330

mm

Depth

395

mm

Approx. weight

18

kg

Test temperature

+120 to +400

°C

Display

two-line set/actual temperature display, backlit

Temperature display resolution

<0.1

K

Temperature accuracy between 0 and 75 mm above the die in temperature range 190°C to 300°C

<0.3[1]

K

Error limit for time measurement (Method A)

± 0.02 (with automatic extrudate cutter)

s

Included in delivery:

  • test weights for load levels 325 g and 2.16 kg
  • hopper
  • cleaning accessories (cleaning piston, cleaning brush, cleaning pads (500x)) for barrel
  • test granulate and filling chute for granulate

Power input specifications

Power supply

220 to 240 V, 1L/PE/N

Power consumption (full load), approx.

0.6

kVA

Power frequency

50/60

Hz

  1. for distance and time, complies with ISO 1133-2

Suitable accessories

Test weights

Weights

The extrusion plastometer can be fitted with weights according to the plastic in use. 2.16 kg is already included in delivery with the basic instrument.

Test load
[kg]

Required for this:

Item no.

5

-

001380

5/10

-

001381

5/10/15/21.6

-

001443

1

-

001385

1.05

-

001386

1.2

-

001387

3.8

-

001459

12.5

weights with 5/10kg test loads (Item No. 001381)

001389

(ASTM D3364) 20

weights with 5/10/15/21.6 kg test loads (Item No. 001443)

008077

Extrusion barrels

Extrusion barrels (1 x required)

At least one extrusion barrel must be selected, in accordance with the materials to be tested. Various plastics (e.g. PTFE and PFA) which contain fluorine release hydrofluoric acid, which attacks the extrusion barrel material. For these plastics extrusion barrels made of a special steel alloy are used. These extrusion barrels have only limited suitability for filled plastics. For these the wear-resistant version is recommended.

Test material

Inside diameter
[mm]

Hole

Properties

Item no.

Plastic, fluorine free

9.55

Finely honed

Wear resistant

001331

Plastic, fluorine content

9.55

finely honed

acid-resistant

001345

Extrudate cutter

Extrudate cutter and die plug

The manual extrudate cutter is recommended for cutting intervals greater than one minute. For short cutting intervals use of the automatic extrudate cutter is recommended in order to obtain precisely timed cuts. The die plug prevents premature outflow of the material when plastics with high flow-rates (>  10 cm3/10 min at load 0.375 kg) are being tested. When the die plug is used an extrudate cutter is required in order to eject the die plug automatically when the test begins. 

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