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DEPARTMENT OF TECHNICAL EDUCATION ANDHRA PRADESH

Name : Y.VENKAT REDDYDesignation : Senor LecturerBranch : Packaging TechnologyInstitute : J.N.Govt.Polytechnic,RamanthapurYear/semester : IV - SemesterSubject Name : Packaging Materials - IISubject Code : PKG - 403Major topic : LaminationsSub Topic : Lamination processPresentation Duration : 100 Mins.Teaching aids : PPT, Animations, Photographs

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OBJECTIVES:

On the completion of the topic the

student will able to understand

The Concept of Laminates as Packaging

materials

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printing (if required)kraft paper glazed40 g/sqm / 25 lbs/ream)adhesivePET (12 μm)adhesivealuminum softtemper (25 μm)Heat seal coating

Standard CR Blister Structure

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• material composition• aluminium, hard or soft

tempered

• various aluminium gauges

• various heat-seal-systems

•Blister liddingFor PVC, PVDC-coated PVC, PP and high barrier base webs

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Standard Products: Child-resistant Blister lidding

• For PVC, PVDC-coated PVC, PP and high barrier base webs

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• material composition• paper – PET – aluminium – heat seal

lacquer• aluminium – PET – aluminium• paper – aluminium – heat seal lacquer• PET – aluminium – heat seal lacquer• aluminium – PET – heat seal lacquer• opening systems: push-through, peel-

off, peel and push, ...

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Standard Products: Cold formUltimate protection against moisture, light and gas

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• material composition• • PA – aluminium – PVC• • PA – aluminium – PP• • PA – aluminium – PE• • PVC – PA – aluminium – PVC• • PP – PA – aluminium – PP• • PA – aluminium – heat seal lacquer

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Standard Products: Strip- and Suppository Foil

• Seal to itself and provide an excellent barrier

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Aluminium

Print

PE

Primer

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• material composition• strip pack

• • aluminium – PE

• suppository foil

• • aluminium – PE

• • PA – aluminium – PE

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Standard Products: Sachets and LaminatesSeal to itself and provide an excellent barrier

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Print

Paper

Aluminium

Sealing film

PE

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• material composition• • paper – aluminium – sealing medium*• • PET – aluminium – sealing medium*• • paper – aluminium – PA – sealing

medium*• * depending on requirements

polyethylene,• ionomer, polyacrylnitril …

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Film Thickness Measurement

Inch Gauge Mil Micrometre

0.001inch = 100 gauge = 1 mil = 25 m

0.0005 inch = 50 gauge = 1/2 mil = 13 m

ISO metric notes:“Micron” is a depreciated term for micrometreone inch = 25.4 millimetres and

0.001 inch = 25.4 micrometres

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Early Universal Barriers

PVDC is original high universal barrier polymers

EVOH laminated between high moisture barrier polymers can also provide good universal barrier

But not high enough barrier for critical applications

Metallizing also produces a high universal barrierBut aluminum metallized films are not transparent

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Recent Advances in Achieving Barrier

Monolayer polymers poly(ethylene naphthalate) ($) liquid crystal polymer ($$$)

Multilayered constructions

PET/PA/PET

PET/EVOH/PET

PET/MXD6/PET/ MXD6/PET

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Recent Advances in Achieving Barrier

Interior coatingsSiOx (glass) coating (Glaskin)AlOx aluminum oxide coatingcarbon coating (DLC and Actis)

Exterior coatings and interior laminatesepoxy-amine coating (Sealica and Bairocade)copolyester (Amosorb: interior layer)

Nanocompositesextremely fine mineral additions

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Summary

Monolayer polymers poly(ethylene naphthalate) ($) liquid crystal polymer ($$$)

Multilayered constructions

PET/PA/PET

PET/EVOH/PET

PET/MXD6/PET/ MXD6/PET

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Quiz

1.______________ laminated between high moisture barrier polymers can also provide good universal barrier

EVOH

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Frequently asked questions

Write about Recent Advances in Achieving Barrier

resistance in packaging applications.