light barrier management in pet packaging applications

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Light Barrier Management in PET Packaging Applications

Hans Werink Project Manager Packaging

Holland Colours


Outline

� Holland Colours Company Profile & Markets Served

� Customizing Light Barrier –Holcomer UHT White� Dairy market trends

� Light & Oxygen barrier

� Lightweighting & Opacity

� Other applications

� Sustainability


Holland Colours Profile


Holland Colours Profile

� Founded in 1979� Over 400 employees� Listed at Euronext, 48% employee

owned� 6 Plants, 6 Sales Offices� 2000 Customers in 70 Countries

Focus markets:� PET Packaging� Building and Construction� Silicones/Elastomers


Holland Colours Product Formats for PET

� Non-polymeric solids – Holcobatch & Holcoprill

� Liquids - HolcoPET� Resin based masterbatch - Holcomer

to benefit from

� Optimized processability� Economy of colouring� Optimal productivity


Holcomer White:Customizable Light Barrier for

Light-sensitive Products

in Monolayer PET Bottles


Global Milk Market Trends

Source: Tetra Pak, 2009


� Milk continues to grow with approx. 2% annually

� Long-life packaged milk growth approx. 8% annually

� Much of this growth is inemerging markets

� Health & Wellness trends

Global Milk Market Trends

� Fortified and functional milk products consumption is rising

� Soy milk consumption issteadily growing


Extended exposure to visible light will initiate photo-oxidation of vitamins B6/B12 and riboflavin (vitamin B2).1

2

Secondary degradation due to auto-oxidation of lipids(milk fats) results in off-flavours and nutrient losses, especially of vitamins. All this results in a specific “light taste”.

Effects of Light on Milk - the Chemistry

3

Taste performance can not be captured by mathematical formulas or generic data: taste & odor tests must be performed in the chosen package option.


1 Three layer HDPE bottles with a black middle layer

Conventional Milk Packaging Options

Carton packs with a metallized inner coating2


A Novel Packaging Option – Monolayer PET

Long-shelf life milk needs a light barrier providing a transmission of less than 2% visible light1

Monolayer PET bottles are a solution!2


Transmission at 550 nm, wall thickness 0.24 mm

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Holland Colours Holcomer UHT White


Key product featuresKey product features

�High-concentrated solid format� Recommended dosing level 8 -

14%, depending on required opacity and wall thickness

�Generates a white bottle that blocks 100% UV radiation and up to 99% of visible light

� EU & FDA food contact compliant

�High-concentrated solid format� Recommended dosing level 8 -

14%, depending on required opacity and wall thickness

�Generates a white bottle that blocks 100% UV radiation and up to 99% of visible light

� EU & FDA food contact compliant

Holland Colours Holcomer UHT White


Cost-effectivenessPerformance

Value

Flexibility

SCENE…benefits of using Holcomer


Performance – Molding & BlowingPerformance – Molding & Blowing

� Injection moulding performance: unaffected cycle time

� Blowing performance: equal line speed and no blow outs – provided the preform design is optimized

� Bottle integrity: no sidewall delaminationupon bottle squeezing

� Injection moulding performance: unaffected cycle time

� Blowing performance: equal line speed and no blow outs – provided the preform design is optimized

� Bottle integrity: no sidewall delaminationupon bottle squeezing

Value



FlexibilityFlexibility

� Bottle design: light protection performance can be customized

� Flexibility in sourcing of resin – no specific resin required

� Molded and blown on standard monolayer equipment – no additional investments required

� Bottle design: light protection performance can be customized

� Flexibility in sourcing of resin – no specific resin required

� Molded and blown on standard monolayer equipment – no additional investments required

Value

…benefits of using Holcomer


Cost - effectivenessCost - effectiveness

� Cost: competitive against current monolayer, multilayer and carton alternatives

� Significantly higher opacity than competitive resin concepts

� Adjustable dosing level offers further lightweighting of bottles without loss of opacity

� Cost: competitive against current monolayer, multilayer and carton alternatives

� Significantly higher opacity than competitive resin concepts

� Adjustable dosing level offers further lightweighting of bottles without loss of opacity


Value


Performance – In The MarketplacePerformance – In The Marketplace

� Protection: taste preservation equal to multilayer and carton packaging

� Quality appearance: high bottle surface gloss

� Proven technology

� Protection: taste preservation equal to multilayer and carton packaging

� Quality appearance: high bottle surface gloss

� Proven technology

Value



Some Commercialized Projects

Campina, Germany

Campina, Germany Fage, GreeceFage, GreeceSachsen Milch,

GermanySachsen Milch,

Germany


� Range of commercial applications in Europe and the USA with leading dairy companies

� Variety of UHT and ESL milktypes and flavored milk drinks in a range of different bottle designs

� Several new market introductions is Europe in Q1/2010

� Range of commercial applications in Europe and the USA with leading dairy companies

� Variety of UHT and ESL milktypes and flavored milk drinks in a range of different bottle designs

� Several new market introductions is Europe in Q1/2010

New Market Introductions


Previous design generation:

New generation:

Previous design generation:

New generation:

Taking the Next Step in Lightweighting

� 0.24 mm wall thickness

� 1.8% light transmission @ 550 nm

� 60 days shelf life

� 0.2 mm wall thickness

� 1.5% light transmission @ 550 nm

� 90 days shelf life

� Meets all requirements on mechanical properties


Light Protection & Oxygen Barrier

O2 O2

O2O2O2

O2

O2O2

Some products need LightAND Oxygen protection

Some products need LightAND Oxygen protection

� Soy milk� Milk-juice blends� Baby formula� Fortified & Functional drinks

� Soy milk� Milk-juice blends� Baby formula� Fortified & Functional drinks� Omega-3

� Enzymes

� Vitamins



O2 O2

O2O2O2

O2

O2O2

Combined functionalityCombined functionality

� It is possible to combine Holcomer UHT White and oxygen barrier resins

� Holcomer has additional passive barrier properties

� Needs to be tested case by case

� It is possible to combine Holcomer UHT White and oxygen barrier resins

� Holcomer has additional passive barrier properties

� Needs to be tested case by case



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PET

Polyshield + 8% Holcomer White



Polyshield


Holcomer & Absolute Light Barrier

� Some products need better light performance than monolayer solutions can offer

� Typically less than 0.1% light transmission

� Multilayer can be an option

� Some products need better light performance than monolayer solutions can offer

� Typically less than 0.1% light transmission

� Multilayer can be an option


Holcomer & Absolute Light Barrier

� Netstal Prelactia 2-layer overmoulding system

� Holland Colours has developed special White & Gray Holcomer grades for this application

� Requires a specialized multilayer preform moulding system

� Netstal Prelactia 2-layer overmoulding system

� Holland Colours has developed special White & Gray Holcomer grades for this application

� Requires a specialized multilayer preform moulding system


Other Applications Requiring High Opacity

There are other monolayer white applications that require high opacity:

There are other monolayer white applications that require high opacity:

� Liquid detergent bottles

� Extruded sheet

� PET laminated coatings

� PET paint cans


Sustainability

Fact is that opaque white PET dairy bottles can significantly disturb PET bottle-to-bottle recycling1

All stakeholders are concerned by the potentially negative image of opaque PET2

A working group on opaque PET recycling has recently been created around COTREP (Comité Technique du Recyclage des Emballages Plastiques) in France

3

This group has taken the initiative to propose a Bottle to Bottle recyclability assessment protocol for each individual white opacifying solution

4


Sustainability

See it in a different waySee it in a different way

Long shelf life milk already comes in multilayer HDPE containers and multilayer cartons1

The recyclability of PET is potentially better than that of current alternatives2

The PET chain as a whole can benefit from this emerging market3

We are teaming up within the industry with a pro-active approach4


Cost-Efficient Solution for Monolayer PET

Consistent resultsConsistent results

�Adjustable opacity level enables further lightweighting of bottles without decreasing protection

�Sensory & mechanical properties have been approved in all projects

� The Holcomer concept is competitive against all alternatives

�Adjustable opacity level enables further lightweighting of bottles without decreasing protection

�Sensory & mechanical properties have been approved in all projects

� The Holcomer concept is competitive against all alternatives

light barrier management in pet packaging applications

Technology