The word “strained” means “sieving” or “filtering”. In connection with rubber compounds, strained is used when, after the actual mixing process, in a further step in an extruder the compounds are pressed through a very fine-meshed sieve. In many cases, mesh widths of less than 0.5 mm are used. Impurities are retained in the sieve […]
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Electromobility: New rubber-PTFE composite part
After the start of series production, HOFFMANN now delivers more than half a million rubber-PTFE composite parts to a well-known German automobile manufacturer. The innovative membrane-elastomer composite part guarantees efficient pressure balancing in lithium-ion batteries of electric vehicles and also serves as protection against bursting. The semi-permeable sintered PTFE film used prevents moisture from penetrating […]
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Micro composite parts for medical ventilators
Especially in times of the corona pandemic and a weakening of the global economy, it is particularly important to us to be able to supply our long-standing customer, Asco Numatics company, with an urgent delivery of more than a hundred thousand of tiny piston valves. In the beginning, deliveries went exclusively to Ölbronn-Dürrn, but now […]
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Rubber Compass® – now to go
Modern design with app character and state of the art make the Rubber Compass® from HOFFMANN mobile (assuming a current browser). Via www.gummi-kompass.de, the innovative internet tool works on any end device – whether smartphone, iPad, notebook or the classic desktop version. In the usual way, the Rubber Compass® as a guide to every branch […]
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Plasma technology at HOFFMANN
In January 2019, we launched the first low-pressure plasma coating line in our series production. In a highly reactive plasma, elastomer sealing surfaces are provided with plasma coatings in this new machine. These nano-coatings can permanently prevent the unwanted stick-slip effect on valve seals. Such coatings will be sold by HOFFMANN under the product name HOFFPLAS. Test […]
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