Packaging Materials презентация


Презентации» Разное» Packaging Materials
Packaging Materials
 Food ManufacturePackaging Materials
 Cans
 Glass Containers
 Rigid plastic containers
 Flexible plastic packagingCans
 Advantages:
 Cheap & widely used in Australia
 Provides good protectionCans
 Aluminium CansCans
 Steel CansCans
 Cans that have bulges or dents
 Air may have enteredGlass Containers
 Characteristics:
 Chemically inert - wont react with its contents
Glass Containers
 Uses:
 Semi-liquid, liquid & solid foods
 Examples:
 Preparation:
 AirPaper & Cardboard
 Paper:
 Used for a wide variety of products
Paper
 & CardboardPaper
 & CardboardPaper
 & cardboardRigid Plastic Packaging
 Advantages:
 Lightweight & strong
 High resistance to breakage
Rigid Plastic PackagingRigid Plastic Packaging
 Types of plastic used:
 polyethylene terephalate (PET) -Rigid Plastic PackagingFlexible Plastic Packaging
 Any plastic that is formed into a sheetFlexible Plastic Packaging
 Plastics are made by melting a pellet andExtrusionFlexible Plastic PackagingFlexible Plastic Packaging
 Laminations (composite plastics):
 Combining 2 or more plasticFlexible Plastic PackagingFlexible Plastic packagingAluminium Foils
 Most foils made from aluminium
 Advantages:
 light
 flexible
 strong
Laminations
 Aluminium foil joined with other materials such as plastic andTetra PakOthers
 Combination Packages:
 2 or more separate packaging materials that function



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Packaging Materials Food Manufacture


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Packaging Materials Cans Glass Containers Rigid plastic containers Flexible plastic packaging Paper & board Aluminium foil & laminates Styrofoam

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Cans Advantages: Cheap & widely used in Australia Provides good protection of the contents Easy to handle during manufacture (filling stacking & packing) Stack easily on supermarket shelves Store for long periods of time Steel cans: coated in tin which acts as a barrier and prevents the food reacting with the steel. Cans containing acidic ingredients are coated with a plastic lacquer to prevent a reaction with the metal Used for solid & semi-solid foods. Aluminium cans: used for soft drinks & beer

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Cans Aluminium Cans

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Cans Steel Cans

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Cans Cans that have bulges or dents Air may have entered so there is a risk of microbial contamination Lacquer may be damaged & food may have reacted with the metal Canned food do not have a use-by date as they are required only on foods with a shelf life less than 2 years Canned food do not have a use-by date as they are only required on foods that have a shelf life of less than 2 years

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Glass Containers Characteristics: Chemically inert - wont react with its contents Non porous Odourless & hygienic Contents can be seen as glass is transparent Great strength (continually getting stronger & lighter) Easy open & re-sealable Variety of shapes & sizes Long-term storage & extended shelf-life Sustainable - can be recycled or re-used

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Glass Containers Uses: Semi-liquid, liquid & solid foods Examples: Preparation: Air blowing, rinsing with warm water, washing in detergent, sterilising (aseptic)

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Paper & Cardboard Paper: Used for a wide variety of products Versatile & cost effective Variety of shapes, textures & thickness' available Greaseproof paper can be used when packaging products such as confectionary & butter. They act as a barrier to odours & moisture Paperboard (thicker paper-based packaging) Can be laminated with other materials to create strength & moisture resistance E.g. Tetra packs Pulped Fibreboard Offers protection for products such as eggs because of the airsplace between the particles Refer to table 11.2 Pg 218

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Paper & Cardboard

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Paper & Cardboard

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Paper & cardboard

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Rigid Plastic Packaging Advantages: Lightweight & strong High resistance to breakage Available in a wide variety of colours, shapes, sizes & textures Can add to the sale appeal of the product Cheap and easy to produce compared to other packaging materials

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Rigid Plastic Packaging

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Rigid Plastic Packaging Types of plastic used: polyethylene terephalate (PET) - used clear as colouring has an impact on the strength. E.g. soft drink, water & oil high density polyethylene (HDPE) - stronger when colour is added. Used for products with a shorter shelf life E.g. milk Polypropylene (PP) - high melting point so is useful for hot fill products such as soups & fruits in syrup. Can be moulded easily E.g. yoghurt & ice cream Polystyrene (PS) - Aerated texture allows package to protect the product from physical damage. Also provide thermal retention E.g. trays & cups

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Rigid Plastic Packaging

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Flexible Plastic Packaging Any plastic that is formed into a sheet or reel with a thickness os up to 0.375mm Plastic films & Bags: Polyethylene (PET) E.g. cling wrap High-density polyethylene (HDPE) E.g. Cereal bags Low-density polyethylene (LDPE) E.g. Kraft singles wrappers Polypropylene (PP) E.g. chip, biscuit, 2 minute noodle wrappers

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Flexible Plastic Packaging Plastics are made by melting a pellet and forcing it out into the desired shape. This process is known as EXTRUSION

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Extrusion

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Flexible Plastic Packaging

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Flexible Plastic Packaging Laminations (composite plastics): Combining 2 or more plastic materials from separate reels that are glued together with adhesive Plastics are extruded and glued together at the same time MAP packaged and vacuum packages can use 3-11 layers

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Flexible Plastic Packaging

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Flexible Plastic packaging

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Aluminium Foils Most foils made from aluminium Advantages: light flexible strong Able to withstand moderate heat Examples: Tubes - condensed milk Trays - frozen foods Product seals - sour cream, butter & yoghurt Wrappers - Cadbury chocolate block

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Laminations Aluminium foil joined with other materials such as plastic and paper to create a stronger packaging material. Example: Muesli bar wrapper (paper, foil & plastic) Tetra Packs: Multi-layered laminations known as composite packages Each layer provides a different purpose Metallising: Plastic coated in a fine layer of metal. E.g. Twisties chip packets

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Tetra Pak

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Others Combination Packages: 2 or more separate packaging materials that function independently of one another E.g. Breakfast Cereal Primary, Secondary & Tertiary Packaging: Primary - Package in which the food is sold to the consumer Secondary - Food sold with a secondary level of packaging. E.g. 6 pack of poppers Tertiary - Used to secure multiple secondary packages to make bulk handling & transportation easier. E.g. shrink wrapped pallets


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