PKG101_FS08_Metal_Pkg_-_Outline

PKG101_FS08_Metal_Pkg_-_Outline - Metal Packaging Invention...

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Metal Packaging
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Invention of Canning 1809 – Appert - “Sealed cooking” process - Glass bottles (Jars) - Cork hammered into neck of bottle - Secured by twisted wire Fruit Vegetables Meat
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Canning (Con’t) Product cooked in bottle Hot water bath Oven Process worked, prize was awarded Glass was unsatisfactory Breakage during transport More research was needed
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Development of Metal Cans 1810 - Durant (English) Tin canister Top and bottom soldered Lead contamination Health problems
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Other Problems with Durant’s Process Can closing was slow and difficult Corrosion Leaks Other quality problems Cans “blew open” during cooking Thermal expansion of contents No way to relieve pressure
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Gail Borden Borden used the slogan, "Milk from contented cows” Borden's canned milk reduced infant mortality, creating a very positive image for canned food. Eagle Brand milk Bordens evaporated milk
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Metal advantages Highest temperature tolerance Highest physical strength More durability Excellent barrier Light Water Gases Operational advantages Faster filling lines Metal remains material of choice for 12 oz. beer, soups, canner fruits and vegetables. US and other countries
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Metal Package Types Common package forms Food cans Beverage cans Decorative gift packages Less recognized forms Drums, pails, closures, trays, racks, pallets, strapping Foil, metalization
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Types of Cans Three piece - Top (end) - Bottom (end) - Body (Sidewall) with seam Two piece - Top (end) - Combined body & bottom
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Materials Name “Tin Can” is a misnomer Cans are primarily low-carbon steel, not tin Steel is coated with a very thin layer (.000015 inches) of other materials (sometimes tinplate) to prevent corrosion
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Tin-Plate Coating to Steel Originally tinplate was applied by melting tin and dipping the steel into it This produced a very thick layer of tin that was equal in thickness on both sides of the steel The original term was probably “tinned can”
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Tin Plate to Steel (cont.) Today, steel is electrolytic
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