Sustainable Plastics - May/June 2020 - 27

collaboration

Brückner machine line

grade specifically for the biax
film process.
The film needed to provide
stiffness, heat resistance, low
tear and good optics. Also, for
converters processing the film,
it needed to be similar to be
similar to BOPP.
"People are always resistant
to change," said Lightbody.
"LLDPE doesn't have the heat
resistance, which gives you usability and a wider process window on packaging lines. And
BOPP has great stiffness, which
LLDPE can't match - but HDPE
can. It's these two aspects of
heat resistance and the stiffness that really make HD BOPE
more suitable for packaging -
so for example for vertical formfill-seal or long preform-fill-seal,
such as stand-up pouches."
Together,
Brückner and
Nova started learning about the
equipment needed to produce
HD-BOPE. They found that it
was possible to use an existing
tenter frame line - "it's exactly
the same MDO and TDM; typically for a BOPP line you're
stretching five times in the machine direction and nine times
in the transverse direction," said
Lightbody - although modifications were needed, as the
machine was not optimised for
polyethylene.

The team complete

Brückner film stretching line
"And when you look at the
biax film market, there's really one dominant player, and
that's Brückner," Lightbody
concluded.
Nova reached out to Brückner and explained what it was
trying to do. Their contact at
Brückner, senior sales manager Sebastian Ruhland, immediately realised the potential
for collaboration. "We also saw
HD-BOPE as the key to mono-

material packaging and therefore to recyclable packaging
design," he said.
The companies have worked
closely together ever since.

A new resin
Using its deep understanding
of what was necessary from
a resin perspective, Nova
Chemicals went to work on the
development of a new HDPE

Realising that another partner
was needed - a converter who
was open to innovation and
new ideas - Brückner introduced Nova Chemicals to one
of their customers, Polivouga,
at K 2019, in Düsseldorf. As
Owen Lightbody described
it: "That meeting went very
quickly from 'are we going to
work together?' to 'how are we
going to work together'."
One of the most important
factors in getting an innovation
to market successfully is the
choice of partners. Collaboration demands openness and
transparency - "Otherwise your
project really just gets stuck,
you get bogged down and lots
of times you don't get anywhere or don't achieve results
as quickly as you could," he said.
Polivouga, a Portuguese
family-run company that invested in its first biaxial film lines in
2015 and 2016, are very focused,

Owen Lightbody,
Nova Chemicals
ambitious and serious about
new equipment. The company
has two lines, that run at 3-5
thousand kgs per hour. "Massive pieces of equipment," said
Lightbody.
"Polivouga is innovation oriented," added Diogo Barros,
the production engineer at
Polivouga with whom the two
other partners mainly interacted. "Three years ago, we started
working with several sustainable projects and one of them
was monomaterial packaging."
Polivouga was eager to
collaborate, said Barros. "In
addition to being a BOPP producer, we also produce blown
and cast film and offer a wide
range of solutions in flexible
packaging for industrial, food
packaging, retail applications
and agriculture in a global perimeter. Nova Chemicals has
as well a wide resin portfolio
for special applications, which
can match perfectly in some
that we are present."
The company was extremely
interested bringing a new material to the flexible packaging
market, and, said Barros, 'the
first time that we had contact
with Nova Chemicals they presented to us a promising resin
for BOPE, with the mechanical
properties that we were looking for.'
Sebastian Ruhland: "The
results from the trials were
very promising, so we directly brought the most promising
HDPE resin successfully to a
slightly modified BOPP production line at Polivouga. By doing
so, we have established a very
continued on page 28
May/June 2020

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Sustainable Plastics - May/June 2020

Table of Contents for the Digital Edition of Sustainable Plastics - May/June 2020

Contents
Sustainable Plastics - May/June 2020 - Cover1
Sustainable Plastics - May/June 2020 - Cover2
Sustainable Plastics - May/June 2020 - Contents
Sustainable Plastics - May/June 2020 - 4
Sustainable Plastics - May/June 2020 - 5
Sustainable Plastics - May/June 2020 - 6
Sustainable Plastics - May/June 2020 - 7
Sustainable Plastics - May/June 2020 - 8
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Sustainable Plastics - May/June 2020 - 11
Sustainable Plastics - May/June 2020 - 12
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Sustainable Plastics - May/June 2020 - 15
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Sustainable Plastics - May/June 2020 - 25
Sustainable Plastics - May/June 2020 - 26
Sustainable Plastics - May/June 2020 - 27
Sustainable Plastics - May/June 2020 - 28
Sustainable Plastics - May/June 2020 - 29
Sustainable Plastics - May/June 2020 - 30
Sustainable Plastics - May/June 2020 - 31
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Sustainable Plastics - May/June 2020 - 34
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Sustainable Plastics - May/June 2020 - 37
Sustainable Plastics - May/June 2020 - 38
Sustainable Plastics - May/June 2020 - 39
Sustainable Plastics - May/June 2020 - 40
Sustainable Plastics - May/June 2020 - Cover3
Sustainable Plastics - May/June 2020 - Cover4
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