A small hole is made in the center by a machine, and air is blown into the bottle to hollow it out. A neck is shaped for a cap or lid. Annealing oven, or leer, slowly heats, then cools, the glassware, making it strong. Aluminum Many states add a five or ten cent deposit to juice or soda cans when you buy them, which you can get back if you return the cans to the store for recycling. Shreds are placed in a gas-powered aluminum furnace, making liquid metal.
Liquid flows into molds that form ingots, or bars of metal.
Rollers squeeze the ingots into sheets for new cans. Sheets are rolled into coils and sent to a plant, where they are shaped into cans again. Like aluminum cans, refundable plastic soda bottles can be brought back to the grocery store in many areas.