Food Packaging MaterialsFood Packaging Materials

Nizam Km

Packaging Materials

1. Tin-Plate Containers.

2. Tin-Free Steel Cans.

3. Aluminium Containers.

4. Glass Containers.

5. Rigid Plastic Containers.

6. Flexible Plastic Packaging.

7. Paper & Paper Boards.

Tin-plate containers

• Low carbon steel covered with tin on both side.

• Light weight.• Rigid & strong.• Corrosion resistant.• Used for packing spices, soups,

soft drinks..etc.

Tin-plate containers

Advantages;• More shelf life than normal metal containers.• Easy to fabrication.• Low weight, easy to handle.• Easily handling on high speed sealing machineries.

Disadvantage;• Limitations for packing acidic products.• Not flexible in can shape.

Tin-free steel cans

• Electro plating of steel plate with chrome.

• Eg: Can super, Hi-top, Mira seam..etc.

• For soft drinks, fruit juices, milk powders, beers..etc.

• Canning of fruits & vegetables.

Tin-free steel cans

Advantages;• Presence of chromium helps to prevent the rusting and

corrosion.• Suitable for attractive printing.• High internal pressure resistance capacity.• Suitable for low acid food products.Disadvantages;• Not suitable for soldering & Problems in welding.• Can’t recycle or reuse.

Aluminium containers

• Alternative for tin-plate cans.• Light weighted.• Contains 99.5% aluminium and small

amount of silicon, iron, zinc, titanium, copper..etc.

• Also used as bottle tops or closures.• Use to packing of beverages, fishes..etc.

Aluminium Foils• Aluminium foils are used for

lamination purposes.• Also used for sealing fried fish and

meat products.

• Uses of foils;Uses of foils;• Tubes - condensed milkTubes - condensed milk• Trays- frozen foodsTrays- frozen foods• Product seals - sour cream, butter & Product seals - sour cream, butter &

yoghurtyoghurt• Wrappers – Covering of chocolate blockWrappers – Covering of chocolate block

Aluminium containers & foils

Advantages;• Basic materials are available in abundant.• Easily fabricate, less chance of leakage.• Corrosion doesn't make any colour.• Non toxic, not have a metallic taste.Disadvantages;• Require high energy to production.• Cannot be welded or soldered.• Tendency to bleach with some pigmented foods.• Empty cans have transportation risk.

Glass Containers• Chemically inert.• Made by fusing of silicates &

oxides of sodium, calcium..etc• Transparent.• Great strength & heat stability.• Long-term storage & extended

shelf-life.• Used for milk products, fruit

products, pickles, sauces, marine foods..etc.

Glass Containers

Advantages;• Safe from contamination & health hazards.• Easy to open and close.• Transparent, It can reuse/recycle.• Ideal for microwave.• Varied shapes and colours.Disadvantages;• Heavy weight, have tendency to broken down.• Disposal issues.• Costly than Plastic containers.

Rigid Plastic Containers

• Made by PVC, HDPE, LDPE..etc• 1st plastic container was made by

cellulose acetate.• In the shape of bottles, cans, jars,

cups, tubes..etc.• Used for Pasteurized milk, non

carbonated mineral water, wine, vinegar..etc.

• Carbonated non-alcoholic beverages are packed in PET made containers.

Rigid Plastic ContainersAdvantages;

• Both transparent and non-transparent.• Very cheaper than others.• Good rigidity.• Recyclable.Disadvantages;• Low heat stability than glass.• Manufacturing and wastage makes pollution.• May react with high acidic foods.

Rigid Plastic Containers

Flexible Plastic Packaging

Retortable pouchesRetortable pouches

• Have a thickness up to 0.375mm.• Made by extrusion.• Alternative to metal cans and

glass containers.• Suitable for canning.• Used for thermally processed-

fruit, vegetable, meat & fish products.

Flexible Plastic PackagingLayers of retortable pouches

Plastic pouches

• Made by plastic films.• HDPE used as cereal

bags.• LDPE used as Kraft singles

wrappers.• Polypropylene for chips,

biscuits, 2 minute noodle wrappers..etc.

Flexible Plastic Packaging

Flexible Plastic PackagingAdvantages;• Good shelf life.• Easy to open pouch.• Requires less storage space.• Light weight.• No metallic contamination.• Easy to dispose.

Disadvantages;• Consumes much packaging time.• Affect overhead pressure.

Flexible Plastic Packaging

Paper & Cardboard• Suitable for small-scale & bulk

packaging.• About all kind of foods can be

packed using paper & its products.• Dry products like; cereals, breads,

biscuits.• Powders like; coffee, tea, sugars.• Liquid foods like; Juice, milk, soft

drinks.• Fresh foods like; meat, fish, egg..etc• Frozen foods like; butter, ice cream,

and other chilled products

Paper & CardboardAdvantages;• It can be used as bags, pouches,

wrappings, boxes, folding cartons, drums, moulds, tetra packs..etc.

• Presence of cellulose fibers give good rigidity.

• Flexible and easily molded.• Light weighted.• Less expensive & widely

available.• Cardboard cartons have high

shock resistive capacity.

Disadvantages;• Non-laminated paper

packages may cause damage due to moisture contact.

• May cause damage on transportation with out external barriers.

• Most of paper packs aren’t reusable.

Paper & Cardboard

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