PKG101_FS08_Plastic_Sheet-Films_Outline

PKG101_FS08_Plastic_Sheet-Films_Outline - Plastic Film...

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Plastic Film & Sheeting
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Plastics Material that can be formed Heat & time Pressure & time Two major classifications Thermoplastic Thermoset
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Thermoplastics Re-heatable & re-formable Recyclable (to some extent) Packaging Many other applications
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Thermoset plastics Shape and dimensions set permanently after initial heating and molding Engineered materials o Automotive o Aircraft o Furniture Not recyclable
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Raw Materials for Plastics Petroleum Natural gas Organic chemicals
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Polymer = Plastic Polymer Big, chain type molecule High molecular weight Made from monomers or other polymers Natural polymers Synthetic polymers
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Packaging Plastics Big Five o Polyethylene o Polypropylene o Polyester o Polystyrene o Polyvinyl Chloride
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Plastic History and Trends 1843 - Sap with resin from rubber trees Local population made tool handles, etc 1845 - Cellulose Nitrate to replace ivory Billiard balls First commercial synthetic polymer 1933 - Polyethylene Limited use during WW II Waterproofing electronics
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Plastic History and Trends 1945 to present Many new plastics Explosion of polymer resins to designs
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