Barrier Coating (pdf) - Stora Enso

Stora Enso
Barrier Coating Options
English

Replacing fossil-based
materials with
renewable materials
There are no longer any excuses to opt for anything but a renewable
packaging material. Even in demanding end uses such as food and
liquid, renewable fibre-based materials can provide the same protection,
performance and product experience.
More efficient, smaller carbon footprint
In most cases, the use of fibre-based materials enables more
ingenious packaging solutions and clear improvements in
end-to-end efficiency and carbon footprint. We understand
that renewable packaging must perform in all shapes, sizes,
forms and temperatures. By using proper barrier coatings,
performance is guaranteed. This brochure introduces the
most common barrier coatings and the insights behind
them.
Barrier coating really makes sense
Barrier coating is the main element in efforts to optimise
protection, odour control and prolongation of shelf life.
Stora Enso has years of expertise in coatings and has
developed responsible solutions for all conceivable end
uses. Stora Enso provides the largest variety of polymer
coatings. Humidity control, sealing properties, airtightness,
light protection, oxygen permeability, aroma barrier, heat
resistance, peelability, grease-proofing – name your need,
we have a solution. All produced in a sustainable manner,
and in some cases also allowing composting. Board and
paper are normally recycled and the recycled fibres can be
reused while separated coating materials can be recovered
as energy.
Combining economy and performance
Barrier coating options cover a wide range of end use
applications. The products have been designed to combine
economy and outstanding performance, whereby excellent
printing and conversion properties are provided and effective
recycling is facilitated. This has resulted in designs that
strike the perfect balance between product protection and
aesthetic appeal.
For many applications, board and paper can be coated
with biopolymers. Biopolymers are produced from raw
materials, deriving from natural crops or from fossil sources.
Biopolymer-coated paperboard breaks down to humus
and CO 2
in industrial composting. In recycling schemes,
biodegradable products can be either recycled or collected
among other compostable materials.
Barrier coatings are made of high-quality polymers, which
are applied on the board surface. The coating layer improves
convertibility and creates effective barriers for a wide variety
of products, including perishable foodstuffs. Extrusioncoating
technology enables the use of only a thin layer of
polymer, while still providing the needed barrier.

Technical structure
Piscuit pouch picture will be here!
Polymer coating
Board
PE Coatings
Polyolefin barriers, such as LDPE and HDPE polymers,
provide excellent humidity protection. Stora Enso also
offers Green PE coating, which is made of renewable raw
materials. PE coatings are available on one or both sides
depending on end use.
Typical end uses: PE-coated packages and cups for
beverages, frozen food, ice cream and yoghurt. HDPEcoated
packages for moisture-sensitive dry foods.
PET Coatings
PET provides barriers and performs other functions. Black
or white PET coatings that provide heat resistance act as
an excellent grease barrier and possess solid WVTR (water
vapour transmission rate) properties.
Typical end uses: Ovenable trays, reheatable product
packages and bakery products.
Light
barrier
White PET Coating
Barrier Performance:
1 Moderate 2 Good 3 Very good 4 Excellent
LDPE Coating
Moisture
Sealability
4
3
2
1
0
Oxygen
Heat
resistance
Grease
Light
barrier
HDPE Coating
Moisture
Sealability
4
3
2
1
0
Oxygen
Heat
resistance
Black PET Coating
Grease
Biodegradable Coating
Biodegradable coatings are tailor-made polymers offering
humidity, oxygen and grease barriers and sealability.
Biopolymers are based on raw materials that come from
natural crops or from fossil sources, or combinations of
these. Our biodegradable coatings are compostable.
Typical end uses: Drinking cups, plates, trays and cartons
for fresh foods, salads, sandwiches and dairy products.
Light
barrier
Moisture
Sealability
4
3
2
1
0
Oxygen
Heat
resistance
Grease
Light
barrier
Moisture
Sealability
4
3
2
1
0
Oxygen
Heat
resistance
Grease
High Barrier Coating (Barr)
Our patented Ensobarr high-barrier coating consists of
a multilayer EVOH and PE polymer structure. It provides
excellent oxygen, humidity and aroma protection. The highbarrier
coated boards and papers are also greaseproof.
Typical end uses: Various delicate foods, including
chocolate, cereals and dairy products. Dry foods, such
as sweets, savoury and processed snacks, coffee and
tea, milk and cocoa powders. Liquid products, such as
juices, soft drinks, green tea, water, soups, desserts and
wines. Non-food products, such as liquid detergents and
fabric softeners.
Light
barrier
Biodegradable Coating
Moisture
Sealability
4
3
2
1
0
Oxygen
Heat
resistance
Grease
Light
barrier
High Barrier Coating
Moisture
Sealability
4
3
2
1
0
Oxygen
Heat
resistance
Grease
Airtight
Freezable
Microwavable
Ovenable
Recyclable
Guide to abbreviations
LDPE Low-density polyethylene
HDPE High-density polyethylene
PET
EVOH
Polyethylene terephthalate
Ethylene vinyl alcohol

Fibre-based solutions for
a more responsible tomorrow
Packaging frequently plays an important strategic role in
the products’ market presence and lifecycle. Increasingly
often, packaging should also enhance the sustainability
aspirations of the manufacturer. Stora Enso’s fibre-based
boards and speciality papers offer superior printing and
finishing quality, reliability in filling lines through better rigidity,
sustainability of high standards and versatile solutions for a
virtually endless array of end uses. Optimal integration of
fibre-based material and barrier coating ensures package
performance, high visual quality, material savings, simple
conversion, waste reduction and easy recycling.
For brand owners, renewable packaging enables better
brand extension – with improvements in both graphics and
environmental properties. Our true ambition is to enhance
the co operation with our partners, aiming to promote the
efficiency and sustainability of fibre-based packaging.
Standard barrier coating offering
Cup and tray grades PE 2PE Bio Barr White PET Black PET
Cupforma Natura
Cupforma Prime
Cupforma Dairy
Cupforma Premium Lite
Cupforma Special
Trayforma Performance
Trayforma Special
General packaging grades PE 2PE Green PE Barr Metallised PET-film
CKB
Ensocoat
Performa Bright
Performa Cream
Performa Natura
Performa White
Tambrite
Liquid packaging board 2PE Barr
Natura
Speciality paper grades
Different speciality
paper grades
Barr
Ask for other available coating options from your local sales representative.
Also available in various packaging solutions such as Primeforma for cold-cut packages and DeLight for various trayformed packaging
in different sizes, forms and lidding options.

Disposable tray lifecycle assessment
One of the main performance indicators of good packaging
is its responsibility. One way of measuring this is the carbon
footprint. In 2010, the FutuPack Eko study was carried out
in Finland. The study proved that when used in a package
for cold cuts, Primeforma board produces a considerably
smaller carbon footprint than packages made entirely of
plastic. You can see the full results in the graph on the right.
The smaller carbon footprint is just one factor. The Primeforma
board is also well suited to existing packaging lines, while
also providing superior brand extension through high-quality
print performance.
These advantages for fibre-based packaging can only
be achieved through excellence in barrier-coating tech -
nology. Innovative products like DeLight and Primeforma,
enforced with proper barrier coatings, open up new opportunities
for food packaging even in the most demanding
applications.
Responsible production value chain
Stora Enso’s production facilities are integrated, meaning
that both pulp and board are produced at the same site.
This allows complete environmental management of the
production value chain. The high percentage of bio energy
used on site ensures a low carbon footprint for paper and
board products.
Since paperboards are so versatile and light, they facilitate
many space-saving designs, which ultimately result in
economical transportation and storage. In addition, more
information can be printed directly onto the surface of the
board, so no extra labels are needed.
Carbon footprint, packaging production
(without waste management)
Primeforma
+
Plastic film
(PP, PE, EVOH) 150 g
PP/PA
+
Plastic film
(PP, PE, EVOH) 150 g
APET
+
Plastic film
(PE, EVOH, PET) 150 g
112
124
184
SOURCE: FUTUPAK EKO2010 STUDY
0 50 100 150 200
CO 2
-eq kg/t ham
Recycled board and paper fibres have good strength
properties and can be recycled for a number of paper and
board grades. In the recovery of polymer-coated boards
and papers, the plastic can be used for energy production,
replacing fossil fuels, or recycled when appropriate.
Fibre-based solutions
– building a more
responsible tomorrow

Redesigning the Future
with Renewable Packaging
Chocolate &
Confectionery
Cigarette
Cosmetics &
Luxury
Cups
Drinks, Wines
& Spirits
Food
Stora Enso Renewable Packaging
Consumer Board
Tel. +358 2046 121
Fax +358 2046 24716
www.storaenso.com/sales
Graphical
Liquid
Pharmaceuticals
Product Information:
www.storaenso.com/consumerboard
www.storaenso.com/specialitypapers
03.2013 Printed on Ensocoat 2S 220 g/m 2 , a renewable fibre-based board material.