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Pillow Pack. In packaging of buns (q.v.) and rolls (q.v.), a rectangularly shaped bag made of film (q.v.), such as polyethylene (q.v.), polypropylene (q.v.) or polyvinylidene (q.v.). The bag is sufficiently large to accommodate two superimposed layers of product, each layer normally consisting of two dozen bun units. Each pack is hermetically sealed and supported by a tray during shipment.