Transparent
rigid
packaging
traditionally
relies
on
fossil
fuel-based
polymers
such
as
polyethylene
terephthalate
(PET),
(PE),
and
polypropylene
(PP),
which
contribute
to
the
production
of
nonbiodegradable
waste,
landfills,
environmental
pollution.
Although
they
exhibit
favorable
light
transmission,
their
nonbiodegradability
raises
significant
sustainability
concerns.
In
contrast,
cellulosic
plant
fibers
are
biodegradable.
We
aim
utilize
biomass
waste
produce
functional,
transparent
material,
thereby
lowering
overall
carbon
footprint.
This
study
explores
high-modulus
materials
using
jute
fibers.
jute/thiol–ene
composites
were
developed
by
ultraviolet
(UV)
polymerization
techniques,
achieving
transmission
high
80%
at
550
nm
with
a
20%
fiber
content
1
mm
thickness.
These
showed
almost
doubling
in
tensile
modulus
compared
commercial
PET
films.
Copper
nanoparticles
successfully
added
provide
antimicrobial
properties.
Hydrolytic
degradation
analysis
confirmed
composite
biodegradability
its
potential
sustainable
solutions
for
applications.
Polymers,
Journal Year:
2025,
Volume and Issue:
17(5), P. 658 - 658
Published: Feb. 28, 2025
Recycling
post-consumer
plastics
for
food
contact
applications
is
crucial
the
circular
economy;
however,
it
presents
challenges
due
to
potential
contamination
and
regulatory
requirements.
This
review
outlines
current
European
U.S.
legislation
governing
recycled
in
materials
(FCM).
The
Food
Safety
Authority
(EFSA)
mandates
evaluation
authorization
of
recycling
processes.
includes
examining
input/output
flows,
prioritizing
use
previously
authorized
FCM,
assessing
decontamination
efficiency
through
material-specific
challenge
tests.
Additionally,
evaluates
new
installations
intended
apply
approved
technologies.
In
contrast,
voluntary
submission
Drug
Administration
(FDA)
provides
guidelines
with
general
advice
on
methodologies
recommended
parameters
Applications
EFSA
non-PET
materials,
such
as
HDPE,
PP,
PS,
are
reviewed,
highlighting
each
material.
Recycled
its
lower
diffusivity
compared
polyolefins
shows
promise
packaging,
a
next
material
Union.
Decontamination
technologies
PS
explored,
including
super-cleaning
processes,
solvent
extraction,
industrial
methods.
emphasizes
need
multidisciplinary
collaboration
address
uncertainties
around
contaminants
ensure
safety
applications.
Recycling,
Journal Year:
2025,
Volume and Issue:
10(2), P. 37 - 37
Published: March 7, 2025
Polystyrene
pots
and
trays
are
a
promising
input
material
for
closed
packaging-to-packaging
cycle.
For
the
evaluation
of
food
law
compliance
it
is
necessary
to
know
possible
contamination
with
substances
from
first
use
but
also
cross-contamination
during
recollection
or
even
misuse
packing
storage
hazardous
chemicals.
As
part
study,
49
conventionally
recycled
PS
samples
six
European
countries
were
analyzed
contamination.
A
rapid
screening
method
was
used,
which
has
already
been
applied
PET
recyclates.
The
30
most
highly
concentrated
semi-quantified
identified.
Overall,
10,310
individual
post-consumer
packages
investigated.
Evidence
found
in
one
substance
pinene
at
concentration
475
711
mg/kg.
incidence
therefore
0.0097%.
maximum
initial
determined
0.069
mg/kg
0.65
under
worst-case
assumptions.
Based
on
data,
an
1
washed
rPS
flakes
suggested
as
pragmatic
approach
consumer
safety
containing
packaging.
Recycling,
Journal Year:
2023,
Volume and Issue:
8(2), P. 39 - 39
Published: April 3, 2023
Post-consumer
polystyrene
(PS)
recyclates
behind
a
functional
barrier
of
virgin
PS
polymer
is
an
attractive
way
to
introduce
post-consumer
in
packaging
materials.
However,
until
now,
there
has
been
no
official
guidance
published
on
how
test
the
performance
barrier.
In
addition,
threshold
limits
for
evaluation
FBs
have
by
competent
authorities.
This
drawback
food
law
compliance
and
novel
technology
notification
this
study,
co-extruded
yogurt
cups
with
artificially
spiked
core
layer
were
investigated
respect
migration
applied
surrogates.
The
kinetic
testing
method
into
gas
phase
was
shown
be
sensitive
suitable
performance.
For
consumer
safety
evaluation,
two
worst-case
scenarios
used.
As
result,
due
high
processing
temperatures
used
during
co-extrusion,
partly
contaminated
surrogates
from
layer.
basis
conditions,
data,
presented,
use
recycled
FB
can
considered
as
safe.
Resources Conservation and Recycling,
Journal Year:
2023,
Volume and Issue:
202, P. 107368 - 107368
Published: Dec. 20, 2023
International
legislation
requests
to
increase
recycling
rates
of
plastic
waste
towards
a
circular
economy.
Nowadays,
high
impact
polystyrene
from
yogurt
cups
is
not
recycled
on
commercial
scale
and
research
gaps
need
be
addressed.
In
this
research,
mechanical
post-consumer
was
carried
out
at
pilot
scale.
The
variation
the
physical-mechanical
properties
overall
migration
food
simulants
as
function
re-extrusion
cycles
were
evaluated
test
its
suitability
for
manufacture
new
packaging.
performance
highly
deteriorated
when
advanced.
Among
most
important
consequences
reprocessing
that
strength
rigidity
significantly
reduced.
Besides,
measured
by
total
immersion
into
exceeded
limit
established
European
in
contact
with
drastically
increased
repetitive
recycling.
