pkg403.70 to 71e ppt
TRANSCRIPT
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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
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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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.