Blow molding extruder, three-dimensional

S-glass See fiberglass type, shape See die shape product shape, shape and volume change See dilatant. shape, blow mold complex See blow molding, extruder, three-dimensional. 

Repeat this scenario with just about any common object you can think of, and you begin to understand why polymers are so common. Plastics come in an extremely wide range of compositions, with different physical and mechanical properties, chemical resistance, and cost. They can be molded, blow-molded, extruded, and shaped into an infinite variety of one-, two-, and three-dimensional shapes and objects. They can be made optically clear translucent, opaque, textured, and multicolored. They have made available to all of us household items that were once enjoyed only by the extremely wealthy (Wascher 1988). Thus the evolution of what many call the Plastic Age was inevitable. 

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