As the market grows for eco-friendly consumer products, the processes used to manufacture and package them are also becoming greener.

Innovations in bioplastic, for instance, are creating packaging that looks like any plastic made from petroleum, but can be buried in the ground and disappear in months without a toxic trace. Wal-Mart, Target, and Trader Joe's are helping to drive the adoption of plant-based plastic packaging.

WestPack, one of the world's largest product packaging conferences, for the first time featured a Green Manufacturing Expo last week. That portion of the show exhibited the latest in packaging made of plant-based and recycled materials instead of petroleum-based plastic or virgin wood pulp. The convention was held in Anaheim, Calif.

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