FOOD PACKAGING1

FOOD PACKAGING : 

FOOD PACKAGING Prepared by Muhammad Hasnain Shirazi 6/25/2010 Muhammad Hasnain Shirazi

FOOD PACKAGING : 

FOOD PACKAGING 6/25/2010 Muhammad Hasnain Shirazi

Food Packaging : 

Food Packaging Food packing or food package Food packaging Conventional packaging Active packaging 6/25/2010 Muhammad Hasnain Shirazi

Active Packaging : 

Active Packaging This is respond to the environmental changes It make use of electronics & microelectromechanical system (MEMS) which detect, Pressure Acceleration Humidity Temperature Dominant application----TTI Senses & measures variations in the environment or package & its contents & communicates to the observer. Allow the consumer to know the condition of food inside the package. 6/25/2010 Muhammad Hasnain Shirazi

The 3 “Ps” of Packaging : 

The 3 “Ps” of Packaging Protection Preservation Promotion 6/25/2010 Muhammad Hasnain Shirazi

Characteristics of a Good food package : 

Characteristics of a Good food package Be low cost & non toxic. Be fat & water proof. Provide barriers against light, gasses & water vapours. Provide sanitary protection to the food. Be of light weight, easily filled, poured & dispose off. Be sealable, printable, & temper proof. Have reasonable impact resistance & mechanical strength. Exhibit adequate transparency where required. Provide information for nutrition value, nature of product, method of preservation, storage conditions, expected shelf life etc. 6/25/2010 Muhammad Hasnain Shirazi

Factors considered in selecting a packaging unit : 

Factors considered in selecting a packaging unit This deal with how best the mechanical & handling properties of the package material cut down the adverse effects of spoilage & deterioration agents of food nutrients with time at convenient & low cost to the consumers. Spoilage & Deterioration agents Product & its Nutrients Other factors 6/25/2010 Muhammad Hasnain Shirazi

Packaging Materials : 

Packaging Materials Rigid & Flexible Metals Glass Flexible & Rigid cellulosic & Plastics Flexible & Rigid Paper Products Laminates & Multilayer Materials Protective Packaging in Tropical Environment Food Labelling 6/25/2010 Muhammad Hasnain Shirazi

Rigid & Flexible Metals : 

Rigid & Flexible Metals Rigid metal containers----Tin cans Properties: Good appearance & relative low cost. High chemical inertness & lack of toxicity. Good mechanical strength & sealing properties. Good resistance to thermal shock. 6/25/2010 Muhammad Hasnain Shirazi

Rigid & Flexible Metals : 

Rigid & Flexible Metals Steps in manufacturing of three piece tin can: Manufacturing of steel plate Tin coating Lacquering Manufacturing of tin can Cutting body blank Notching of body blanks Lock seaming Forming can body Gasket laying Sealing the ends 6/25/2010 Muhammad Hasnain Shirazi

Rigid & Flexible Metals : 

Rigid & Flexible Metals Flexible metal containers: “Aluminum is a metal of low tensile strength but at thickness of 2.5-5mm, it has been successfully made into small cans with sufficient strength to withstand heat processing” Alternative to aluminum: Manganese & magnesium Pros & cons of flexible metal containers 6/25/2010 Muhammad Hasnain Shirazi

Rigid & Flexible Metals : 

Rigid & Flexible Metals 6/25/2010 Muhammad Hasnain Shirazi

Glass : 

Glass Reasons for popularity of glass containers: They are inert. Generally transparent. Adaptive to high speed filling. Are comparatively cheap & reusable. Can resist high internal pressure & vertical load. Deformation can only occur destructively. 6/25/2010 Muhammad Hasnain Shirazi

Glass : 

Glass Manufacturing of glass containers Glass container seal Glass fracture Returnable & non-returnable glass bottles 6/25/2010 Muhammad Hasnain Shirazi

Manufacturing of glass containers : 

Manufacturing of glass containers Manufacturing by heating at about---1500oC Silicon dioxide------74% Sodium oxide-------18% Calcium oxide------7% Magnesium oxide---1% Ferrous & Manganese---Traces Poured into moulds in which compressed air is passed from the neck side of container-----curing in oven. 6/25/2010 Muhammad Hasnain Shirazi

Glass container seal : 

Glass container seal For normal pressure: Ordinary stoppers, aluminum caps, metal screw caps. For high pressure: Crown corks, alka caps, external screw caps 6/25/2010 Muhammad Hasnain Shirazi

Glass Fracture : 

Glass Fracture Brittleness Surface scratching Thermal shocks or impactness Returnable & non-returnable bottles One way bottles Returnable glass containers 6/25/2010 Muhammad Hasnain Shirazi

Glass : 

Glass 6/25/2010 Muhammad Hasnain Shirazi

Flexible & rigid or semi rigid cellulosic & plastics : 

Flexible & rigid or semi rigid cellulosic & plastics “They are formed from basic organic molecules based on cellulose in the case of cellulosic & other organic compounds in case of plastics” Polymer Homopolymers Copolymers Examples---Cellulosic Cellophane, cellulose acetate etc 6/25/2010 Muhammad Hasnain Shirazi

Flexible & rigid or semi rigid cellulosic & plastics : 

Flexible & rigid or semi rigid cellulosic & plastics Examples -----Plastics: Polyamide ----nylon Polyester resin Polyethylene vinyl acetate Propylene vinyl chloride 6/25/2010 Muhammad Hasnain Shirazi

Flexible & rigid or semi rigid cellulosic & plastics : 

Flexible & rigid or semi rigid cellulosic & plastics 6/25/2010 Muhammad Hasnain Shirazi

Flexible & rigid paper products : 

Flexible & rigid paper products They are important due to, Low cost Low weight Adaptability to various treatments Examples: Wrapping papers, bags, pouches etc Basic material cellulose from, Wood pulp, straw, jute etc 6/25/2010 Muhammad Hasnain Shirazi

Flexible & rigid paper products : 

Flexible & rigid paper products 6/25/2010 Muhammad Hasnain Shirazi

Laminates & multilayer materials : 

Laminates & multilayer materials Composite packages: “It is made of concentric layers of two or more basic packaging material i.e. as paper, foil, film glued together” Retort pouch: Produce from flexible laminate made of 2-4 layers which include polyester, aluminum foil, etc. 2-ply: 12um nylon or polyester/70um polyolefin 3-ply: 12um polyester/12umaluminium/70umpololefin 6/25/2010 Muhammad Hasnain Shirazi

Specific functions of layers : 

Specific functions of layers Outside layer: It provide strength, printability & scuff resistance. Serve as barrier to light, moisture & gas. Middle layer: Excellent water vapour, gas & light barrier. Heat transfer characteristics Inner layer: Provide heat seal integrity, compatibility with food product & strength. 6/25/2010 Muhammad Hasnain Shirazi

Advantages of using retort pouches : 

Advantages of using retort pouches Shorter process time. Improve product quality due to less overcooking. No interaction of product & container. Processing of unique products due to facility of vacuum sealing. Savings in storage & transportation due to reduce wt & space compared to rigid containers. Conveniences in cooking & ripening. 6/25/2010 Muhammad Hasnain Shirazi

Protective packaging in tropical environment : 

Protective packaging in tropical environment Principal function of packaging: “To protect the packaged product against contamination & all types of deterioration & spoilage during its useful storage life” Tropical environment: High humidity Fluctuating temperature 6/25/2010 Muhammad Hasnain Shirazi

Protective packaging in tropical environment : 

Protective packaging in tropical environment Packaging system based on, Composition Stability Expected life Water vapour, gas & odour: Metal container Hermetically sealed glass jars Sealable aluminum based laminates Against light: 6/25/2010 Muhammad Hasnain Shirazi

Protective packaging in tropical environment : 

Protective packaging in tropical environment 6/25/2010 Muhammad Hasnain Shirazi

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6/25/2010 Muhammad Hasnain Shirazi

Slide 31: 

6/25/2010 Muhammad Hasnain Shirazi

Food labelling : 

Food labelling label: Labelling: Labelling information consists of, The name of the food List of ingredients Net contents and drained weight Name and address of the manufacturer Lot identification Date marking and storage instructions Instruction for use 6/25/2010 Muhammad Hasnain Shirazi

Freshness” indicator labels : 

Freshness” indicator labels 6/25/2010 Muhammad Hasnain Shirazi

Packaging innovation examples : 

Packaging innovation examples 6/25/2010 Muhammad Hasnain Shirazi

Biodegradable packaging : 

Biodegradable packaging 6/25/2010 Muhammad Hasnain Shirazi

Modified atmosphere packaging : 

Modified atmosphere packaging 6/25/2010 Muhammad Hasnain Shirazi

Copy Packaging : 

Copy Packaging 6/25/2010 Muhammad Hasnain Shirazi

Thank you! : 

Thank you! 6/25/2010 Muhammad Hasnain Shirazi