Packaging Processes and Requirements - TAPPI · 2009 Consumer Packaging Solutions for Barrier...
Transcript of Packaging Processes and Requirements - TAPPI · 2009 Consumer Packaging Solutions for Barrier...
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2009 Consumer Packaging Solutions for Barrier Performance Course
Packaging Processes and Requirements
Pouch and Package Making
Presented by:Roger L. KaasKaas Consulting Group, LLC
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Outline
• Pouch making processes– Vertical form fill seal– Horizontal form fill seal– Flow wrap– Flat bed pouchers– Thermoform fill seal
• For each type of machine discuss the following:– Pouch type– Film requirements– Typical applications– Barrier requirements
• Pouch features
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Vertical Form Fill Seal (VFFS)• Single web system• Web is formed into a tube and a longitudinal seal is made
– Fin seal or lap seal– Seal top and bottom of next package and drop fill– Longitudinal cut to make final package– Side gusseting – Intermittent or continuous action
• Dry food applications– Cereal– Snacks
• Liquid food– Food service
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Intermittent VFFS
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Continuous VFFS
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Liquid VFFS
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Requirements for VFFS• Low seal activation temperature• High hot tack
– Product is dropped directly on hot seal– Heavy products can reopen bottom seal
• Stiffness– Registration control if printed– Cutting
• Low coefficient of friction (COF)– Film sliding over forming collar and fill tube
• Seal through liquid products• Barrier requirements dependent on product
– Moisture barrier for cereal and snacks• Maintain crispness and prevent staleness
– Oxygen barrier• Prevent oil rancidity in snacks• Oxidation of hot fill products
– Aroma/flavor barrier• Flavored cereal and snacks
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Horizontal Form Fill Seal (HFFS)• C‐fold pouch
– Single web– Fold web in center– May also have bottom gusset
• Stand up pouches
– Seal edges to form sides of pouch– Fill and seal top– Predominately dry products
• Dry mixes• Pasta
– In‐line for low volume applications– Rotary for large volume
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In‐Line (HFFS)
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Continuous Rotary (HFFS) Slow Motion
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Continuous Rotary (HFFS) Full Speed
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Requirements for HFFS
• Stiffness – Registration control for printed packages
– Minimize stretching in machine
• Flex crack resistance– Folds and gussets
• Low seal activation for high speed machines
• Barrier requirement dependent on product
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Horizontal Flow Wrap
• Form tube around product
• Longitudinal seal
• Cross seal and cut between packages
• Similar in concept to VFFS
• Applications– Toiletries
– Medical devices
– Industrial and commercial products
– Candy and nutritional bars
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Flat Bed Pouch Making
• Four side seal pouch– Two web system
– Usually made on a flat bed pouch machine
– Usually three side sealed premade pouches
– Filled and final seal made in second operation
– Typical application is for retort pouches
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Flat Bed Pouching Machine
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Stand Up Pouches• Made with bottom gusset
– One piece with plowed gusset– Separate bottom gusset
• Seal through holes punched in gusset to contain edges• Stand up for shelf display
– High quality graphics for customer appeal– Convenience– Contoured or shaped pouches
• Zipper insertion for reclosing• Dispensing fitments• Straw insertion for beverages• Many applications
– Beverages– Pet food– Retort pouches– Dry mixes and food products– Candy and confections– Household chemicals
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Stand Up Pouch Bottom Gusset
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Thermoform Fill Seal• In‐line thermoforming and sealing• Vacuum packaging• Modified atmosphere packaging
– Evacuate and recharge with inert gas– Nitrogen, carbon dioxide or mixtures
• Applications– Processed meat– Cheese– Medical devices– Industrial products
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Thermoform Fill Seal Process
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1 Lower web reel2 The lower web is heated and
formed into pockets in the forming die.The web indexes forward
3 Package pockets4 Filling5 Upper web6 The lower and upper webs are
sealed to each other in a vacuum (or a modified atmosphere) in the sealing die by appyling pressure and heat
7 Cross cutting8 Longitudinal cutting9 Finished pack
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Thermoform Fill Seal Requirements• Forming film/bottom web
– Thermoformability• Draw down into corners without excessive thinning
– Abuse resistance• Puncture, abrasion and flex crack resistance
– Clarity and gloss– Barrier dependent on application– Seal through contamination for food products
• Top web– Often printed with high quality graphics– Stiffness to maintain registration– Barrier dependent on application– Seal through contamination for food products– Peelability often incorporated in top web sealant
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Pouch Features• Easy open
– Notches
– Directional tear
– Tear strip or string
– Peelable seals
– Straw insert
– Laser score• Straight machine direction
• Pattern or cross‐machine
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Laser Score
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Pouch Features• Easy open
– Notches– Directional tear– Tear strip or string– Peelable seals– Straw insert– Laser score
• Straight machine direction• Pattern or cross‐machine
• Reclose– Tacky strip– Zipper, with or without slider
• Other features– Shaped or pattern cut pouch– Fitments
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Shaped Pouch
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Fitmented Pouch
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Thank You
PRESENTED BY
Roger L. KaasKaas Consulting [email protected]
Please remember to turn in your evaluation sheet...
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