Plastics News - Show Daily - October 15, 2024 - 12

FAKUMA 2024
12 * Plastics News, October 15, 2024
SKZ shows how technology
can soar at Fakuma
SKZ SÜDDEUTSCHES
KUNSTSTOFFZENTRUM
Hall B3, Booth B3-3000
By David Vink
Plastics News Correspondent
Würzburg, Germany-based
research institute SKZ Süddeutsches
Kunststoffzentrum
uses live two-component molding
to produce a giveaway flying
disc with a polycarbonate hard
plastic inner ring overmolded
with an outer soft TPE ring.
SKZ customizes the discs
by printing the inner ring with
equipment from Veitshochheim,
Germany-based Koenig & Bauer
Coding GmbH.
The discs are produced in a
single mold from Rügland, Germany-based
mold maker GHD
Präzisions-Formenbau GmbH &
Co. KG, (A2-2107), with separate
mold cavities used for each
component.
The discs were also produced
at SKZ's June 2023 Network Day,
when the PC was colored at the
molding machine with liquid
color via smartDoS metering
equipment from Schwerin, Germany-based
HNP Mikrosysteme
GmbH (A1-1205).
Bernhard Hennrich, SKZ injection
molding research manager,
said that after decades of
addressing optimization of thermoplastic-to-TPE
adhesion, the
challenge today is how to separate
the components at the end
of product life to ensure a cirSKZ
and Tübitak
MAM have
developed a biobased
epoxide
resin solution
from orange oil.
cular economy while ensuring
suffi ciently high bond strength
between the components as required
for product performance.
LSR magnifying " glass "
Although not molded live at
the booth, another booth giveaway,
in its own gift box, is a liquid
silicone rubber watchmaker's
magnifying " glass. "
The same part was involved
in a project at SKZ on its single
PX 50-180 SilcoSet injection
molding machine from Parsdorf,
Germany-based
KraussMaffei
Technologies GmbH (A77303),
first acquired in 2022, to
show simultaneous molding of
A two-component
polycarbonate/
thermoplastic elastomer
fl ying disc and LSR
magnifying glass that
SKZ will give away at its
Fakuma booth. SKZ photos
two completely different LSR
products in one mold.
This involved the 6-gram,
35-millimeter-diameter LSR
magnifying glass, together with
a 28-gram, 100-mm LSR coffee
cup lid with maximum thickness
of 7 mm.
Wolfurt, Austria-based MeusLIKE
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INJECTION
burger Georg GmbH & Co KG
(A2-2313) produced the mold
with Georgensgmünd, Germany-based
Toolcraft AG. It is
equipped with a valve-gated
cold runner from Frankenberg,
Germany-based Günther Heisskanaltechnik
GmbH (A2-2207).
The runner is installed at a
90-degree angle to the direction
of drive and fi tted with electric
linear actuators, ensuring precise
and continuous gate adjustment
needed for the unconventional
and complex molding task.
Eberstalzell, Austria-based
Systems
Nexus
Elastomer
GmbH (A6-6222) supplied LSR
dosing and Herzogenaurach,
Germany-based Bestenlehrer
GmbH polished the mold surfaces,
for both the disc and the
magnifying glass.
Microplastics in water
SKZ's European center for
dispersion technology (EZD)
worked up to November 2023
within a KoDeKa-Plast project
on detecting microplastics in
flowing water.
Here, EZD conducted continuous
optical detection and categorization
in water of particles
sized as from 10 µm by using a
combination of highly sensitive
scattered laser light analysis for
size and shape and Raman spectroscopy
to determine chemical
composition with less effort
than by microscope.
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It also developed a basis to
assess propensity of different
plastics to release microplastic
particles and the extent to
which such particles come from
aged plastics.
Laser sintering
Working together with Potsdam,
Germany-based Fraunhofer
IAP institute for applied polymer
research, SKZ looks into how
commercial and self-developed
additives can be incorporated
by microencapsulation within
powders used in selective
laser sintering, also known as
laser-based powder bed fusion
(LBPF). The objective is to ensure
additives do not change
bulk material characteristics
and properties that hinder or
even prevent processing.
Orange oil
In thermosetting plastics, SKZ
has developed a bio-based epoxide
resin solution with Halle/
Saale, Germany-based Fraunhofer
IMWS institute for microstructure
of materials and systems (B22108)
and the Tübitak MAM Marara
Research Center in Turkey.
The resin has been derived by
extraction and purification of
orange oils to obtain limonene
epoxy and limonene dioxide,
with subsequent 25 percent incorporation
in linseed oil based
epoxy " showing significant effects "
on curing temperature
development and curing time.
SKZ concludes that this sustainable
alternative to conventional
solvents gives composites
a unique composition and
performance, with great potential
in floor coverings and fiber
reinforced plastic composites.
Jana Fiedler, SKZ composites
research leader, said: " This type
of terpene biosynthetic building
block derived from orange oil reduces
dependence on fossil raw
materials and contributes to environmentally
friendly materials for
various industrial applications. "
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Plastics News - Show Daily - October 15, 2024

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