GÖTTFERT Werkstoff-Prüfmaschinen GmbH of Buchen / Odenwald at K 2019 in Düsseldorf -- K Trade Fair
Manage stand orders
Select Option

GÖTTFERT Werkstoff-Prüfmaschinen GmbH

Siemensstr. 2, 74722 Buchen / Odenwald
Telephone +49 6281 408-0
Fax +49 6281 408-18

Hall map

K 2019 hall map (Hall 10): stand J55

Fairground map

K 2019 fairground map: Hall 10

Our range of products

Product categories

  • 03  Machinery and equipment for the plastics and rubber industries
  • 03.02  Machinery and plant for processing
  • 03.02.001  Extruders and extrusion lines
  •  Extruders
  • 03  Machinery and equipment for the plastics and rubber industries
  • 03.02  Machinery and plant for processing
  • 03.02.001  Extruders and extrusion lines
  •  Single screw extruders

Single screw extruders

  • 03  Machinery and equipment for the plastics and rubber industries
  • 03.02  Machinery and plant for processing
  • 03.02.001  Extruders and extrusion lines
  •  Extrusion lines
  •  Extrusion lines for blown film

Extrusion lines for blown film

  • 03  Machinery and equipment for the plastics and rubber industries
  • 03.02  Machinery and plant for processing
  • 03.02.001  Extruders and extrusion lines
  •  Extrusion lines
  •  Extrusion lines for flat film and sheets

Extrusion lines for flat film and sheets

  • 03  Machinery and equipment for the plastics and rubber industries
  • 03.02  Machinery and plant for processing
  • 03.02.001  Extruders and extrusion lines
  •  Extrusion lines
  •  Extrusion lines for tapes

Extrusion lines for tapes

  • 03  Machinery and equipment for the plastics and rubber industries
  • 03.10  Measuring and test equipment
  • 03.10.001  Measuring and test equipment for rheological properties
  • 03  Machinery and equipment for the plastics and rubber industries
  • 03.10  Measuring and test equipment
  • 03.10.004  Measuring and test equipment for thermal properties

Measuring and test equipment for thermal properties

  • 03  Machinery and equipment for the plastics and rubber industries
  • 03.10  Measuring and test equipment
  • 03.10.008  Measuring and test equipment for optical properties

Measuring and test equipment for optical properties

Our products

Product category: Measuring and test equipment for rheological properties


A new generation of Melt Index Test

The mi-2.x Melt Flow Index series can carry out a single weight test according to ISO 1133 and ASTM D1238, procedures A, B and C. In addition it runs tests according to ASTM D 3364.
The mi-2.x easily performs melt-flow-rate (MFR), as well as melt-volume-rate (MVR) measurements. Due to the modular design of this system, it is possible to automate the measurement process step by step. The extrusion plastometer can be used either as a stand-alone instrument, or it can be run with a computer software for statistical analysis and data management. Depending on options, GOETTFERT Melt Flow Index machines offer additional benefits, besides from just running according to ISO and ASTM. 

The melt flow indexer mi 2.1 shows fit for quality control (QC) where only one weight is used. In addition, it is useful when only a few measurements are made. 

The Melt Flow Indexer mi2.2 is equipped with an automatic weight lifting system. This makes it much easier for the operator to handle weights of 5kg and more. As a time saving option, it also allows the automated start of the measurement right after the melt time is over. Weights can also be lifted at the end of the test, to allow an easy cleaning process.

The Melt Flow Indexer mi2.3 has a full weight handling system, whose cartridge holds up to 8 weights. There is no need anymore to lift or move weights manually.

 A higher accuracy as well as a higher level of automazation are key advantages of the mi40.

The new mi40 can be operated via a flexible positionable touch panel which can be used directly at mi40 or can be moved flexibly and is therefore equally suited for a right and lefthanded person.
The mi40 can optionally be equipped with a semi-automated cleaning unit, with no use of compressed air, ensuring an efficient and reliable test barrel cleaning by means of up/down movements and rotating cleaning piston.
Operator comfort is increased additionally by the wellknown pre-compression function with test weights for more precise test results and by the ejection function at the end of the measurement. 
As already known from the previous MI series, the test chamber is freely accessible to offer a large operating range for optimal material feeding and cleaning.
A link to the new miCONNECT is possible.

mi40 - automation
Our well established fully automated MI-Robo gets support by an ongoing development of fully automated melt flow index tests. We newly offer the possibility to operate our mi40 via an industrial robot, starting from automatic feeding of the test materials into the barrel, performing of the measurement and cleaning of the capillary fully automated. This solution enables a quality control with multiple Melt Flow Indexers (mi40) at the same time, with different materials and different testig conditions.

mi40 - viscosity
So far, our mi40 offers the possibility to carry out melt index tests with several weights (multi load measurements). An additional Add-on is the development of melt index multi weight measurements with the option of viscosity tests in an extended shear rate range.

The mi40 is also equipped with an OPC/UA Interface, which enables a bi-directional communication between various devices (machine-to-machine).

MI-Robo 89.16
The world wide exclusive fully automated melt-index-instrument with automatic filling, measurement and cleaning.

By its high automation the Automatic  Melt Indexer contributes to an even increased accuracy.
The reason for this high accuracy is the  “operator factor” usually being an important issue, but here it is completely omitted during the fully automated melt flow tests of the MI-Robo contrary to manual and semi-manual operated MI devices.
The melt flow tests are according to the standards ISO 1133 and ASTM D1238.

The already well-established pre-compression function with test weights for more precise test procedure and test results and the ejection function for ejecting the test material at the end of the test contribute to a high user convenience.

The MI-Robo 89.16 is  equipped with an integrated die cleaning function.
The die cleaning is automatically performed by the system and the die is directly available for
subsequent tests.

New features of the MI-Robo is the optimized replacement of the cleaning roll and the use of
electric motors instead of pneumatic motors.  As a result, both, noise level and air consumption were reduced significantly
To complete the mentioned features we like to emphasize the accelerated weight selection and the optimized piston cleaning to provide fast availability of the weights and the test piston for subsequent test.
It is also possible to connect the MI-Robo 89.16 to an Online-Sampler for feeding test material directly from the production line.

The new Software Platform for Melt Flow Indexers.

With miCONNECT we start into the technological future of melt index measurements.
A server-based platform for comfortable service and evaluation of melt index test devices using a web browser-based user interface.
With OPC-UA, we rely on a common and secure industry standard for communication between device and software in order to keep smooth operation flexible and comfortable.
Measurement data can be stored and managed via Microsoft SQL Server or Microsoft Access and can therefore be scaled to meet any requirement.

Most important functions:
·         Data transmission and data acquisition between PC and test device
·         Location-independent operation
·         Numerical and graphical display of the measured values with statistical evaluation
·         Simple operation in a clearly designed graphical web interface

More Less

Product category: Measuring and test equipment for rheological properties


The D-Melt enables the determination of melt index and elongation viscosity in one measurement.
This combination is particularly interesting as a quick test in quality control (QC) for processing process of polymers.

The melt index measurement is an internationally standardized procedure, which is used to determine the flowability of polymer melts. The sample is plasticized in a heated test barrel and afterwards extruded through a capillary with a test piston and a defined weight on top. Meanwhile the MVR-value (melt volume-flow rate) is calculated form the feed rate of the test piston. With the melt density it can be converted to the MFR-value (melt mass-flow rate) in g/10min.
The D-MELT makes it possible to also determine the MElt Elongation value (ME-value), a measure of the melt elasticity. Both measurements, ME and MVR, are done with just one filling of the test barrel. The ME-measurement is completed before the start of the standard-confirming MVR-measurement.
The ME-value is the force in the extruded strand at a certain draw-down ratio. This new combined method realizes the opportunity to determine a significant characteristic value of the extrusion behavior of your product in a quick, easy and cost-effective way. The D-MELT system and the ME-value are therefore ideal for continuous process monitoring or the inspection of incoming goods.

More Less

Product category: Measuring and test equipment for rheological properties

Capillary Rheometer with Add-Ons

The new high-pressure capillary rheometer series with an extensive range of Add-Ons

The current family of the GOETTFERT capillary Rheometer is available with different measurement forces (20,25, 50, 75, 120kN). With the high-end model RG 120 it is possible to reach much higher sheare rates. Besides the determination of viscosity, the Rheograph family is able to access the GOETTFERT plattform for extended material characterization with features as follows: 
• PVT (Pressure, Volume, Temperature) 
• Elongation (Haul-Off, Rheotens)
• Contifeed
• Shark-Skin
• Thermal Conductivity 
• Counter-Pressure-Champer
• Die Swell Measurement

These Add-ons contribute positively to the total value for the operator who wants to get as much information as possible about his material. The well established single, double, or tripple barrel system illustrates besides the various options of different dies key advantages of a GOETTFERT Capillary Rheometer. 

GOETTFERT developed an essential improvement in terms of the accuracy of the pressure measurement. This enables to improve the reproducibility of the measurements results by factor 10 and enables especially an extension of the measurement range in low shear rates. Due to this development GOETTFERT lifted the markt standard to a higher level. 

For the measurement sequence and the extended evaluation, multifunctional tools are delivered with the LabRheo operator software as well as WinRheo II (EXCEL®-based).

Database access from the external system and the csv export are easy to implement.

A remote maintenance software can be used for fast fault analysis or for training purposes.

More Less

Product category: Measuring and test equipment for rheological properties


Our fully automated Melt Feeding Unit

The CONTIFEED offers new possibilities for determination of process-related rheological
test data. The system is combined of a Capillary rheometer and a Mini-Extruder.
The Extruder feeds the test barrel of the Rheograph with melt, which ensures an air bubble free filling of the test barrel.
This continuous method of melt feeding contributes to a significant timesaving during the tests.
The reduced material residence time under influence of elevated temperatures is just one of the advantages due to shortened heating time by optimized and effective heating system.

As a result of this short heating time the CONTIFEED is specially suitable for elastomers and thermally less stable material.
By pre-plastification also powder materials, e.g. PVC dry blends can be measured.

More Less

Product category: Measuring and test equipment for rheological properties


PVT Measurement isothermal/isobaric air-cooled up to 500 °C

The test device PVT500 is specifically designed for measurements of PVT isothermal and PVT isobaric.

With this device thermodynamic properties, the specific volume of the polymer as a function of temperature and pressure, can be determined.
These data are particularly important for the simulation of the injection moulding process. But they also can be used to describe any process of shrinkage during cooling as for example in extrusion.

The measurement can be performed in two possibilities:
Isothermal – at constant temperature and changing pressure or
Isobaric – at constant pressure with different cooling rates.

The device is characterized by its compact test chamber and by its new optimized cooling system.
The cooling medium is air, therefore no cooling water connection is required.

As an option also the thermal conductivity of the material can be measured acc. ASTM D5930 / ISO 22007-1

More Less

Product category: Measuring and test equipment for rheological properties

SLR - Spin Line Rheometer

Extensional Rheometer for high Haul-off Speeds

Melt spinning is an important production process for chemical fibers made of synthetic or biologically based polymers.
The new Spin Line Rheometer introduced by GÖTTFERT is a measurement system to characterize the spinnability of polymers in lab scale. The system can be installed under an extruder or a capillary rheometer and is able to measure the strand force and therefore the extensional viscosity at spinning speeds of up to 7000 m/min.
The strand is guided around the diversion-wheel that is placed horizontally below the extruder die.
The wheel is installed on a highly sensitive force sensor with a resolution of 0,05mN that measures the draw-down force in the strand. The strand is accelerated by the take-off wheel installed on a high-speed electric motor. A strand guide makes multiple wrappings possible.
A Venturi-Die is used to separate the strand from the take-off wheel. Optionally an optical measurement system can be installed to measure the strand profile at various positions between the die and the diversion-wheel. A new, extended version of the Rheotens-Software is used to control the measurement system and to analyze the data.

The Software can be connected to higher-level bus systems. With an optional self running Online Sampler System for material feeding a non-stop operation is guaranteed.

More Less

Product category: Extruders


X-TRUDE 300Nm & X-TRUDE 600Nm & X-TRUDE 1400 Nm
More than a half century of experience and continuous development with rheological analysis are incorporated in our line of extruders and rheological testing equipment. Different standard sizes are available, as well as user specified cylinder systems. The EXTRUSIOMETER may be equipped with multiple pressure transducers and temperature sensors, just one of the many important characteristics of the device. The liquid cooling system avoids the plastification of the test material in the feeding zone. The torque measurement greatly enhance the range of measurements possible. Shear rate, shear stress and viscosity are continuously displayed. The new X-trude Series comes with the torque extensions X-trude 300, 600 and 1400nM. In combination with various adoptable systems a open platform for rheological Online Analysis.

More Less

Product category: Measuring and test equipment for rheological properties


Elastomer and rubber testing instruments for quality control as well as research and development. Our product range covers the well esablished rubber testing instruments like Mooney-Viscosimeter, Moving Die Rheometer (MDR), Rubber Prozess Analyzer (RPA). Furthermore our product range is covering a Rubber Capillary Rheometer for for extrusion and injection molding characterization of rubber compounds.

More Less

Product category: Measuring and test equipment for rheological properties

Clean Room Application – RAM-extrusion

High precision RAM-Extruder

Application: Medical sector

For production of biodegradable implants and other customized applications

Stainless steel design for operation in clean rooms class A

Advantages of RAM-extrusion in comparison to Screw extrusion

- Pressure generated by piston
- Extreme low shear heating
- Small amount of material required
- Homogenization in a barrel
- Minimum material waste due to complete barrel emptying
- Force or speed controlled
- Easy combination with die swell tester
- Easy handling with a melt cutting unit
- Easy cleaning and sterilization
(swivel-mounted barrel)
- Comfortable documentation
(each barrel filling can be documented)

More Less

About us

Company portrait

The company GÖTTFERT-Werkstoff-Prüfmaschinen GmbH was founded in 1962 by
Prof. Dr. Otto Göttfert. In the second generation now his son Dr. Axel Göttfert took over the leadership as sole managing director.
As one of the leading companies in the field of rheology and material characterization, GÖTTFERT is the only
independent organization that specializes in this market niche, leading the market with the introduction of innovative products. Its instruments for thermoplastics, thermosets and
elastomers are used in laboratories and in production settings worldwide. The instruments are built in small production runs, modular in design and they can be made to fit almost
everyone`s need.

The high flexibility of technology in terms of rheology leads to a series of autarkic rheometer species that is reflecting GÖTTFERT`s production program, namely: Monitoring of polymer characteristics in the production process („Online Technology“, „AT-Line Technology”, „Filmanalysis”); or quality control in the application laboratory („Melt Index“) and rheological characterization of new materials („Capillary Rheometers“, „Elastomer Testing“), or in pilot plant application („Extrusion Equipment)
All GÖTTFERT`s systems fulfill highest possible demands of quality and innovation !

MADE BY GÖTTFERT – stands for taking responsibility. It also means that you cannot
test quality into a product; it has to be built in. The main principle is utterly about quality.
A modern equipped manufacturing engineering system offer here the best basic
requirements to perform the mechanical and electronic manufacture of all components in-house. With its philosophy of the own production, GÖTTFERT consciously accepts responsibility even many years after the delivery of the equipment guaranteeing service and spare parts for its customers.
Distribution and service at GÖTTFERT is a concept for reliable customer service, short periods of delivery, extensive consulting, support and expertise that continually demonstrates the company‘s efficiency in more than 90 countries worldwide.
Our branches GOETTFERT INC. USA, GOETTFERT China and GOETTFERT-Dataphysics India (GDI) are always available to sales and service customers in their marketing areas.