Plastics News - Show Daily - October 17, 2023 - 14

14 * Plastics News, October 17, 2023
FAKUMA SHOW DAILY
Eisenhuth focuses on fuel
cells, hybrid injection molding
EISENHUTH
GMBH & CO.
KG
Hall B2,
Booth 2112
Eisenhuth produces
graphite-fi lled compounds
on a twin-screw extruder.
Eisenhuth GmbH & Co. KG photo
Examples of Eisenhuth
bipolar plates.
Plastics News photo by David Vink
By David Vink
Plastics News Correspondent
Osterode am Harz, Germany-based
Eisenhuth GmbH & Co.
KG has its sights set on a fuel
cell future.
The company has developed
a 1,300-by-300-millimeter bipolar
separator plate in graphite-fi lled
plastic with milled channels.
Speaking about it with Plastics
News at the Hanover fair, Eric
Klemp, project manager for fuel
cell and battery technology at Eisenhuth,
didn't reveal the specifi c
plastic in this large plate " because
that's our secret. " Eisenhuth uses
different plastics in graphite-fi lled
plates for polymer electrolyte
membrane fuel cells.
Polymer choice depends on
maximum operating temperatures:
polypropylene (90° C), PVDF (120°
C) and phenolic resin (180° C).
Hydrogen fl ow channels (fl owfi
elds) are molded-in or milled on
a Sodick VL600Q wire electrical
discharge machine. Klemp said
smaller rectangular plates can be
produced faster when channels
are milled. Lower quantities are
pressed, but injection molding
or continuous plate extrusion is
used for large production runs.
Eisenhuth uses 3D fi lament
printers for prototype plates and
has developed 80 percent graphite-fi
lled 0.5- to 0.7-mm-thick rollfed
fi lm, available up to 1.5 mm,
which is cut and stamped onto
supporting plates with an Eisenhuth
tool.
Eisenhuth is proud of a 2018
sustainability award from the
German Federal Ministry of Education
and Research (BMBF) for a
bioelectrochemical fuel cell generating
electricity from wastewater
treatment plant effl uent. The
fuel cell simultaneously contributes
to wastewater purifi cation,
as demonstrated at a water treatment
plant in Goslar, Germany.
Two pilot plants were built in
November 2016 inside a 40-foot
container in Goslar. This BioBZ
project fuel cell pilot plant started
running in June 2014 and has been
cleaning 4,000 liters of wastewater
daily and supplying 812 kWh of
electricity per inhabitant per year.
Eisenhuth focuses on fuel
cell, redox battery and fast market-growth
power-to-gas electrolyzer
components for breaking
down water to hydrogen and
oxygen, here also with a plastic-containing
titanium powder.
The company started developing
fuel cell gaskets and bipolar
plates in 2004, starting up its fi rst
graphite-fi lled plate production
line in 2006.
It acquired a twin-screw extruder
in 2012 for its graphite-fi lled compounds.
It is presently involved in
120 hydrogen projects per year.
The machine park includes
plastic injection molding machines
with clamping forces up to
450 metric tons, rubber molding
machines up to 250 tonnes and
silicone rubber molding machines
up to 40 tonnes. The machines are
used for small and medium series
production for automotive, health
care and machinery applications,
as well as for silicone rubber, ethylene-propylene-diene-monomer
(EPDM)
rubber or fl uoropolymer
bipolar plate gaskets, sometimes
molded-on directly.
Some machines are used for
powder metal injection molding.
The company has produced 350
serial production plastics and
rubber injection molding tools.
Hybrid molding
Hybrid molding at Eisenhuth is
exemplifi ed by an aircraft armrest
made in two-component injection
molding of a hard plastic structural
component and a soft silicone
rubber cladding.
Its " Rasant-Hybrid " (rapid-hybrid)
technology is typifi ed by
automatic production of a component
made of EPDM, 50 percent
glass-fi ber-reinforced nylon 6/6
and a CuZnPbSt copper alloy on
a 140-tonne-clamping-force Engel
injection molding machine.
The production cell is served
by a Yaskawa articulated robot, a
premium category robot offered
by Sepro Group.
This Eisenhuth electrolyzer
plate uses a plastic
containing titanium
powder.
Hannover Messe photo
Two-component aircraft
armrest in rigid plastic and
silicone rubber shown by
Eisenhuth Managing Director
Thorsten Hickmann.
Eisenhuth GmbH & Co. KG photo
Hybrid molding in EPDM, 50 percent
GF-nylon 6/6 and a copper alloy.
Eisenhuth GmbH & Co. KG photo

Plastics News - Show Daily - October 17, 2023

Table of Contents for the Digital Edition of Plastics News - Show Daily - October 17, 2023

Plastics News - Show Daily - October 17, 2023 - 1
Plastics News - Show Daily - October 17, 2023 - 2
Plastics News - Show Daily - October 17, 2023 - 3
Plastics News - Show Daily - October 17, 2023 - 4
Plastics News - Show Daily - October 17, 2023 - 5
Plastics News - Show Daily - October 17, 2023 - 6
Plastics News - Show Daily - October 17, 2023 - 7
Plastics News - Show Daily - October 17, 2023 - 8
Plastics News - Show Daily - October 17, 2023 - 9
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Plastics News - Show Daily - October 17, 2023 - 11
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Plastics News - Show Daily - October 17, 2023 - 13
Plastics News - Show Daily - October 17, 2023 - 14
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Plastics News - Show Daily - October 17, 2023 - 16
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Plastics News - Show Daily - October 17, 2023 - 18
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Plastics News - Show Daily - October 17, 2023 - 20
Plastics News - Show Daily - October 17, 2023 - 21
Plastics News - Show Daily - October 17, 2023 - 22
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Plastics News - Show Daily - October 17, 2023 - 24
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