Barrier Coating Options

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 efficiency, smaller
carbon footprint
Barrier coating
makes sense
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 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 CO2 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. Extrusion- coating technology enables the use of only
a thin layer of polymer, while still providing the
needed barrier.
Barrier Performance:
PE Coatings
Polyolefin barriers, such as LDPE and HDPE polymers, provide excellent humidity protection. Stora
Enso also offers PE Green coating, which is made of
renewable raw materials. PE coatings are available
on one or both sides depending on end use.
1 Moderate 2 Good 3 Very good 4 Excellent
Typical end uses: PE-coated packages and cups
for beverages, frozen food, ice cream and yoghurt.
HDPE-coated packages for moisture-sensitive dry foods.
LDPE Coating
Moisture
4
3
2
HDPE Coating
Moisture
Oxygen
1
0
Light
barrier
Oxygen
1
0
Light
barrier
Grease
4
3
2
Grease
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.
Biodegradable Coating
Typical end uses: Drinking cups, plates, trays and
cartons for fresh foods, salads, sandwiches and
dairy products.
Black PET Coating
Oxygen
Moisture
1
0
Light
barrier
Light
barrier
Grease
Heat
resistance
Sealability
Moisture
4
3
2
Oxygen
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.
Grease
Moisture
Light
barrier
Grease
Sealability
Oxygen
Heat
resistance
High Barrier Coating
1
0
Light
barrier
4
3
2
1
0
Sealability
Biodegradable Coating
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 high- barrier coated boards and papers
are also greaseproof.
4
3
2
Heat
resistance
Sealability
White PET Coating
Moisture
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.
Heat
resistance
Sealability
Heat
resistance
4
3
2
1
0
Oxygen
Grease
Sealability
Heat
resistance
PP Coating
Moisture
Light
barrier
4
3
2
1
0
Oxygen
Grease
PP Coating
PP coating offers heat resistance for microwave oven
and suits well also deep freezing. Good sealing properties secure performance in use.
Sealability
Heat
resistance
Typical end uses: cups for microwave oven and
frozen food.
Guide to abbreviations
Airtight
Freezable
Microwavable
Ovenable
Recyclable
LDPE HDPE
PP
Low-density polyethylene
High-density polyethylene
Polypropylene
PET
Polyethylene terephthalate
EVOH Ethylene vinyl alcohol
Standard barrier coating offering
Cup and tray grades
PE
2PE PP
PE
2PE PE Green 2PE
Barr 2PP
Bio
Barr
White PET
Black PET
Cupforma Natura
Cupforma Prime
Cupforma Dairy
Cupforma Premium Lite
Cupforma Special
Trayforma
Trayforma Special
General packaging grades
Barr
CKB
Ensocoat
Performa Bright
Performa Cream
Performa Natura
Performa White
Tambrite
Liquid packaging board
Natura
Speciality paper gradesBarr
LumiFlex
Ask for other available coating options from the local Stora Enso sales representative.
Metallised PET film
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. Barrier coated board
packages can provide substantially smaller
carbon footprint than packages made entirely
from plastic or aluminium. Since paperboards
are so versatile and light, they facilitate many
Fibre-based solutions
for a more responsible
tomorrow
Packaging 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.
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.
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.
Chocolate &
Confectionery
Cigarette
Cosmetics &
Luxury
Cups
Drinks, Wines
& Spirits
Food
Graphical
Liquid
Pharmaceuticals
Stora Enso Consumer Board
Tel. +358 2046 121
http://renewablepackaging.storaenso.com
02.2016 Printed on Ensocoat 2S 220 g/m2, a renewable fibre-based board material.
Materials fit for the purpose