Berry Plastics is a manufacturer that predominantly makes packaging for food services. One of their main items they made were cups. The cups were injection molded, the lids are thermoplastics, and they also have a printing line for the finished cups.
Berry Plastics is probably the biggest consumer of plastic/petroleum based products in the U.S.. What I haven't realized about plastic until the field trip, is that plastic prices depend on the current petroleum prices, since plastics require petroleum to be produced.
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