Simulation & Development

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Critical Gel

Critical Gel and Rubber Curing Cycle Design

Compounds with large cross-sectional thickness must reach a satisfactory “state of cure” by the end of the residence molding cure time to prevent porosity at demoulding. more...

August 20. 2021 - Research news

Figure 3: (a) Galvanic corrosion occurs in the presence of two dissimilar metals, an electrically conductive separation and an electrolyte connection. The process does not occur when the two metals are isolated or when there is no electrolytic connection (9); (b) Corrosion mechanism occurring between aluminum and steel with a not-completely-isolating EPDM [11].

Significant impact on the EPDM weather-strip (WS) requirements

Statistical Approach of Designing Isolating EPDM Rubber Compounds to Enable Light-Weighting Solutions at Automotive OEMs

The automotive trend of replacing steel doors in cars with light-weight metals like Magnesium/Aluminum (Mg/Al) has a significant impact on the EPDM weather-strip (WS) requirements. more...

August 9. 2021 - Research news

Figure (3) Two-body abrasion, reciprocating sliding apparatus (1) Base plate (2) Plate (3) Linear bearing (4) Table (5) Emery paper (6) Test sample (7) Sample jig (8) Load cell (9) Normal load.

Crosslinking by light and silica nanoparticles

Development in the Surface Properties of the Hybrid Composite Resin by Light-Curing Process and Silicon Dioxide Nanoparticles

The purpose of this paper is to identify the surface properties of the hybrid composite resin as function of curing times, curing modes and fractions of SiO2 NPs. more...

June 24. 2021 - Research news

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Mechanical-thermal behavior of rubber during the process

Simulation of a Heat-Buildup Process on Rubber Components

This article describes the simulation setup and the development of a simulation method for modeling the self-heating of cyclic-loaded rubber components within the well-known ABAQUS FE environment. more...

June 22. 2021 - Research news

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Systematic process investigations on a rubber extruder

Optimization Approaches in Rubber Extrusion for Energy and CO² Savings

Systematic process investigations on a rubber extruder (40 mm, 16D) show on the basis of enthalpy increase, that the specific energy input is 0.3 - 1.7 kWh/kg and the thermal efficiency is in the range of 1 - 12 %. more...

June 15. 2021 - Research news

Fig.1: Approach for experimental optimisation of heating strategies using the HeatStraD (Heat Strategy Developer).

Energy efficiency is one of the central challenges for European energy policy

Optimisation approaches in continuous Vulcanisation to increase Energy Efficiency

The continuous vulcanisation is one of the most energy intensive processes in rubber processing. more...

June 15. 2021 - Research news

Für die Covid-19-Impfstoffe werden viele Vials benötigt, die mit einem Stopfen aus Kautschuk verschlossen werden. Bild: syhin_stas/Stock. Adobe.com

Corona-Impfstoffproduktion befeuert Nachfrage nach Pharma- und Reinraumpressen

The production of sterile sealing plugs for Corona vaccine containers is demanding

Numerous orders from suppliers for Corona vaccine production are leading to high demand for pharmaceutical and cleanroom presses from Wickert Maschinenbau. more...

April 12. 2021 - Tires in

Probst Nicolaus_Brüssel

Production and application of rCB

Progress on recovered Carbon Black from Waste Tire Pyrolysis

The use of recovered carbon black from waste tire pyrolysis is not progressing . The potential reasons for this stagnation are discussed considering the latest investigations in this domain. more...

February 26. 2021 - Research news

Abb. 1: Gemeinschaftsprojekt Mund-Nasemaske Bild: Sigma Engineering

Verkürzte Entwicklung, zuverlässiger Prozess

Precise and Quick Face Mask Production With Virtual Molding

In der Kunststoffindustrie sind iterative Schritte in der Artikel- und Werkzeugentwicklung die Regel. Diese können durch Simulation deutlich verkürzt oder vermieden werden. Eine Simulation des Prozesses, egal ob es um die Auslegung eines neuen oder die Optimierung eines bestehenden Prozesses geht, spart nicht nur Kosten und Ressourcen, sie führt auch schneller zum Ziel – das ist wichtig, wenn der Termindruck hoch ist. more...

December 10. 2020 - Tires in

Figure 2: Process chain of the AME process

3D-Printing with Rubber

Development, Construction and Testing of a 3D-Printing-System for Additive Manufacturing of Carbon Black filled Rubber Compounds

Additive manufacturing of carbon black filled elastomers provides unique opportunities for polymers. The process is based on Fused Filament Fabrication (FFF). more...

September 28. 2020 - Research news

Verkleinert_70 Prozent_Bild 1_Handyhalter Butterfly

Simulation unterstützt Prozessverständnis

Simulation for 2K-Processing

Die Konstruktion von Spritzgieß-Werkzeugen für Mehrkomponentenanwendungen erfordert die ganze Erfahrung der Werkzeugbauer. Wenn es sich dabei noch um eine Thermoplast-plus-Flüssigsilikon-Anwendung handelt, ist eine sorgfältige thermische Auslegung für einen stabilen Prozess unerlässlich. Zur Unterstützung dieser Auslegung kommen moderne Simulationsansätze zum Einsatz, um so die Werkzeugänderungen auf ein Minimum zu reduzieren. Der Beitrag zeigt diese Möglichkeiten anhand des “Butterfly“ - eines Handyhalters aus Polycarbonat und Flüssig- silikonkautschuk, der für die K 2019 designt wurde. more...

December 11. 2019 - Tires in

Fig. 1: An experimental testing machine for uniaxial stressing of elastomer samples.

Education in Elastomer-Physics

Experimental testing Machine for Elastomers for Educational Purposes and Didactics

This article describes the design, construction and operation of an experi­mental testing machine as part of student works, and deals with the sequence and results of a series of elastomer samples. more...

December 10. 2019 - Research news

Fig. 1: Percolation behaviour of electrically conductive rubber materials depending on the amount and type of the electrically conductive filler material [9, 10].

Vulcanisation of tick-walles products

Heating and Vulcanisation of Rubber Hybrid Materials through electrical Resistance Heating

Rubber compounds contain different components, including crosslinking chemicals. The homogeneous and energy-efficient vulcanisation of thick-walled rubber components is a challenge. more...

December 10. 2019 - Research news

Konkrete Lösungen im Bereich der vernetzten Produktion – Industrie 4.0 – in der Elastomerverarbeitung werden auf der K 2019 präsentiert. Bildquelle: alle Klöckner Desma Elastomertechnik

Sinnvolle Zusammenführung von Automatisierung, Digitalisierung und Prozesssteuerung

Digitization for less Complexity and more Sustainability

Die Zunahme von Komplexität, Flexibilität, Volatilität, sich verkürzender Planungshorizonte, Geschwindigkeit, Präzision und Qualität, setzen bisherige Geschäfts- und Methodenmodelle einem Stresstest und mit teilweise hohem Tempo anzugehenden Veränderungen aus. Das Unternehmen Desma bietet durch die sinnvolle Kombination von Maschinenanwendungen mit digitalen Werkzeugen die Voraussetzungen dafür, dass sich die Elastomerverarbeiter im Wandel der Zeit weiterhin wettbewerbsfähig positionieren können. more...

October 14. 2019 - Tires in

Fig. 5: Determination of the crosslink density by the Mooney-Rivlin approach.

The crosslink density of rubber compounds influences the in-rubber properties of the final product to a great extent

Determination of the Crosslink Density of Tire Tread Compounds by Different Analytical Methods

The crosslink density of rubber compounds influences the in-rubber properties of the final product to a great extent. more...

September 10. 2019 - Research news

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