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Development of an enabling EPDM polymer to improve performance and processability of EPDM compounds

RubberWorld 3184 Views , 

Royalene EPDM, a terpolymer of ethylene, propylene and a
non-conjugated diene, is one of the most versatile specialty
elastomers in commercial use today. The main attributes of
EPDM are its outstanding resistance to oxidation, ozone and
the effects of weathering. It is also highly extendable, allowing
high levels of fillers and plasticizers to be added, while still
maintaining good physical properties

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Guill announces 800 series hybrid extrusion tooling

RubberWorld 2066 Views , 

Guill announces the introduction of a new version of its popular 800 series, known as the 800 Series Hybrid. In some extrusion applications that utilize crossheads and inlines, layers of the exact same material are applied multiple times, using a single die. This method is used to reduce the propensity for errors caused by gels breaking through a thin wall, weld lines, inconsistent wall thickness, plus material and process variations. Additional errors include difficult-to-process materials and demanding applications where there is zero fault tolerance.

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KraussMaffei bundles all extrusion technologies under one roof

RubberWorld 2020 Views

KraussMaffei Group has bundled its technological know-how and decades of experience in extrusion by merging its corporate extrusion operations at a single location. This strategic approach results in substantial product benefits for customers, valuable synergy effects for the company, and new opportunities and fields of research for the future. The highlight will be the world’s most modern extrusion research and development center currently built at the company’s new site in Laatzen on the outskirts of Hannover. The new plant is part of the largest investment program in KraussMaffei’s history. The relocation of the entire extrusion division is scheduled for the second half of 2022.

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Newsrss3Silicone & Medical

Biesterfeld and Dow expand strategic partnership for moldable optical silicones

RubberWorld 3405 Views ,  , 

Biesterfeld Spezialchemie and long-term partner Dow have extended their strategic partnership. With immediate effect, Biesterfeld will distribute the well-known moldable optical silicone product range SILASTIC™, serving the industrial, retail and consumer lighting industries. The distribution area includes the DACH region, as well as Northern and Eastern Europe.

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Silicone fabrics market worth $5.5 billion by 2026, growing at a CAGR of 6.8 percent

RubberWorld 2764 Views

The silicon coated market is dominated by large players, such as Elkem (U.S.), 3M Company (U.S.), Auburn Manufacturing Inc. (U.S.), Nott Company (U.S.), Mid-Mountain Materials, Inc. (U.S.), Newtex Industries, Inc. (U.S.), Precision Coating & Coated Fabrics (U.S.), Trelleborg AB (Sweden), Compagnie de Saint-Gobain S.A. (France) and Serge Ferrari Group (France). Expansions, acquisitions, joint ventures and new product developments are some of the major strategies adopted by these key players to enhance their positions in the silicon coated fabric market.

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Wickert
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Wickert Mashinenbau offers compact setup-free multifunctional gripper

RubberWorld 1075 Views

Wickert Maschinenbau has developed an extremely compact, setup-free multifunctional gripper for the handling of multilayer stacked or chaotically deposited components with layer separation.
The system is available with two different gripper types: A group of two to six fingers picks up work pieces and lifts them out of the transport container. As soon as one layer has been completely emptied, the separation sheet is removed by three close fitting, extendable vacuum suction elements on the gripper arm. The system is then able to access the next level of components.

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ArticlesMolding

Quality versus quantity: How changes in EPDM polymer impact molding

RubberWorld 4899 Views , 

EPDM is a widely used polymer for many molded goods, as it is inherently water, ozone, UV and weather resistant, and generally recommended for temperatures ranging from -50°C to 150°C. EPDM can be a low cost material option, as it allows for high total loading and has a low specific gravity, yielding low pound-volume cost. EPDM responds well at various process temperatures, and is used in many applications, such as seals, gaskets, weather resistant parts, NSF 61 water potable applications, FDA applications, roofing components, electrical resistant compounds, and more

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ArticlesMolding

Modification of fluoroelastomers based on TFE-P copolymer to improve cure speed, physical properties and mold release

RubberWorld 3499 Views ,  , 

This article presents research conducted to develop modified TFE-P that improves curability and mold release, and provides good amine resistance and compression set. It is demonstrated that a cure site monomer can easily be copolymerized into the TFE-P backbone to solve the abovementioned performance problems, while maintaining original TFE-P characteristics of resistance to heat, steam, and organic and inorganic acids and bases. In addition, it is possible to color the material

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Molding

Achieving savings in the post-curing process of fluoroelastomer compounds prepared by injection molding

RubberWorld 5117 Views ,  ,  , 

Commonly, rubber compounds based on FKM elastomers are subjected to two stages of cure in order to optimize physical and mechanical properties. Compression set and tensile strength are the main properties usually improved by the post-cure stage. The initial stage is called curing, and is performed under pressure in a mold during the injection molding process. A secondary stage called post-cure is performed in an oven under air or nitrogen atmosphere in order to complete crosslinking reactions. This removes volatile by-products and additives to obtain enhanced, stable physical and mechanical properties

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