Polyvinyl Chloride

Polyvinyl chloride (PVC) is a clear, amorphous polymer used mostly for films and containers. Most often, plasticiz-ers (organic liquids of low volatility) are added to the polymer to yield widely varying properties, depending on the type and amount of plasticizers used. Plasticized PVC films are limp, tacky, and stretchable, and the films are commonly used for packaging fresh meat and fresh produce. Unplasticized PVC sheets are rigid, and the sheets are often thermoformed to produce inserts for snacks such as chocolate and biscuits.

PVC bottles have better clarity, oil resistance, and barrier properties than those of HDPE. However, the use of PVC bottles in food packaging is relatively small due to poor thermal processing stability and environmental concerns with chlorine-containing plastics.

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