Sustainable Plastics - January/February 2021 - 29

bioplastics
ANTI-STAT PERFORMANCE IN INJECTION MOULDED HOMO PP

Responsible Choice
The bottom line here is that
Palsgaard's bio-based additives
are highly sustainable solutions
that match or exceed the functional performance of conventional synthetic migratory additives while being safe enough to
eat - thus removing health concerns. In chemical terms, they
are glycerol and polyglycerol
esters made exclusively from
vegetable fatty acids. Origins
include certified palm oil, which
provides the greatest yield per
hectare, followed by rapeseed,
sunflower, coconut and other
vegetable oils. All Einar additives are FDA and EU approved
for food-contact applications.
Produced in CO2-neutral factories, these renewable and animal-free additives have a perfect fit in innovative, responsible
packaging solutions and are an
excellent drop-in replacement
for fossil-based additives in existing polymer formulations.
Typical applications are polyolefin (PE and PP) resins used
in injection moulding, film and
foam processing lines for a wide
range of end-products from food
packaging and food storage to
non-food containers with durable anti-static and anti-fogging
performance. In other areas, the
bio-based additives are used as
ageing modifiers in PP and PE
foams, slip agents in PET, PLA
and other polyesters, coating
powders for EPS, mould release

Additive concentration is 0.50%
7

No effect

6
5
Static decay time (sec)

in food packaging to eliminate
health hazards and prevent the
taste of the packaged food from
being affected. In this context,
it is important to recognise that
most Einar products are not
subject to specific migration
limits. Beyond meeting these
key requirements of food safety, bio-based additives derived
from edible plants can also help
to minimise the overall additive
concentration in the polymer
formulation. With regard to the
need for more circularity, they
have little - if any - impact on
the recycling of post-consumer packaging, whether chemically or mechanically. Notably,
they are not known to degrade
into harmful compounds which
might contaminate the recyclate, promote discolouration or
loss of properties.

4
3
2
1
0
1 day

1 week

1 month

3 months

6 months

Einar® 411

12 months

Ethoxylated Amine/GMS combination

Superior anti-static coverage: Einar 411 anti-static additive is able to rival or even surpass the performance of traditional petrol-based and less safe additive offerings such as GMS and ethoxylated amine combinations.
agents, and pigment dispersants
in colour masterbatches.

No Fogging, No Static,
Better Dispersion
Transparent food packaging
films and containers require
long-lasting clarity to maintain
the aesthetic consumer appeal of the packaged product.
Varying conditions of ambient
humidity and temperature in
these applications can cause
the formation of condensation
droplets and fogging on the
inner surface, unless the packaging is made from a material
modified with an effective anti-fog additive. Plant-based anti-fog additives from Palsgaard
cannot prevent the occurrence
of moisture but will lower the
surface tension on the inside
so that the moisture will spread
as a continuous thin film across
the surface. Apart from preserving a clear view of the food, this
also protects its freshness and
extends its shelf-life.
Another desirable function
of surfactants in packaging
materials is the prevention
of static accumulation on the
outer surface. Static electricity attracts dust and other
fine particles, which again
means less transparency and
creates an unhygienic look of
the product. Just as important, however, the build-up of
static charges on plastic surfaces can result in a number
of serious problems during

processing, conveying, stacking and packaging. For example, high static is known to
reduce the acceptable rolling
speed in film production, create handling problems during
stacking, causing congestion
on conveyor belts, and complicating the sealing of packages for powdery products. In
electronics packaging, it may
even damage the packaged
product. As they migrate to
the polymer surface, Einar anti-static additives interact with
ambient moisture to create a
conductive layer that will effectively dissipate the static.
As liquid dispersion aids in
colour masterbatches, the biobased additives enable a much
cleaner and safer production
process compared to traditional
powdered waxes, while resulting
in a more efficient distribution of
the colour pigments. This in turn
means that pigment loadings
can be reduced to achieve the
targeted colour strength, which
saves cost, helps achieve faster
colour changes and enhances
the sustainability profile of both
the masterbatch producer and
the polymer.

Sustainability
and Service
Palsgaard's product development and customer project
support is backed by a dedicated Polymer Application Centre,
which is fully equipped for meticulous testing and validationto

smake the transition of sustainable plant-based technology
into successful additive solutions as flawless as possible.
For instance, static decay time
and surface resistivity of application samples are evaluated at
ambient as well as low humidity, where the ability to dissipate
charges is reduced. Resistance
to hot and cold fogging is tested
in a 60°C water bath and a 5°C
cooling cabinet, respectively.
Plastics processing capabilities,
including injection moulding,
blow moulding and calendaring
equipment, are not only available for pigment dispersion and
mould release trials. They are
also used to investigate the impact of additive loading on melt
flow, mechanical properties and
surface quality.
Beyond supporting the plantbased additives business, the
company's independently operated Nexus research and development facility ensures that it
will be able to meet the growing
needs of the plastics industry for
more natural, bio-based product
ingredients in the long term.
Plant-based polymer additives
have become a clear and feasible alternative to competitive
fossil-based products. From the
renewable source to uncompromising food safety and efficient
performance, they offer brand
owners, converters and end-users a superior and responsible
choice in line with consumer
demands and strict regulatory
requirements - for healthier and
more sustainable applications.

January/February 2021

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18 months

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Sustainable Plastics - January/February 2021

Table of Contents for the Digital Edition of Sustainable Plastics - January/February 2021

Contents
Sustainable Plastics - January/February 2021 - Cover1
Sustainable Plastics - January/February 2021 - Cover2
Sustainable Plastics - January/February 2021 - Contents
Sustainable Plastics - January/February 2021 - 4
Sustainable Plastics - January/February 2021 - 5
Sustainable Plastics - January/February 2021 - 6
Sustainable Plastics - January/February 2021 - 7
Sustainable Plastics - January/February 2021 - 8
Sustainable Plastics - January/February 2021 - 9
Sustainable Plastics - January/February 2021 - 10
Sustainable Plastics - January/February 2021 - 11
Sustainable Plastics - January/February 2021 - 12
Sustainable Plastics - January/February 2021 - 13
Sustainable Plastics - January/February 2021 - 14
Sustainable Plastics - January/February 2021 - 15
Sustainable Plastics - January/February 2021 - 16
Sustainable Plastics - January/February 2021 - 17
Sustainable Plastics - January/February 2021 - 18
Sustainable Plastics - January/February 2021 - 19
Sustainable Plastics - January/February 2021 - 20
Sustainable Plastics - January/February 2021 - 21
Sustainable Plastics - January/February 2021 - 22
Sustainable Plastics - January/February 2021 - 23
Sustainable Plastics - January/February 2021 - 24
Sustainable Plastics - January/February 2021 - 25
Sustainable Plastics - January/February 2021 - 26
Sustainable Plastics - January/February 2021 - 27
Sustainable Plastics - January/February 2021 - 28
Sustainable Plastics - January/February 2021 - 29
Sustainable Plastics - January/February 2021 - 30
Sustainable Plastics - January/February 2021 - 31
Sustainable Plastics - January/February 2021 - 32
Sustainable Plastics - January/February 2021 - 33
Sustainable Plastics - January/February 2021 - 34
Sustainable Plastics - January/February 2021 - Cover3
Sustainable Plastics - January/February 2021 - Cover4
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