Aerosol paint

Aerosol paint (commonly spray paint) is paint that comes in a sealed, pressurized container and is released in an aerosol spray when a valve button is depressed. Aerosol painting is one form of spray painting; it leaves a smooth, even coat, unlike many traditional rolled and brushed paints. Standard-sized cans are lightweight, portable, inexpensive, and easy to store. Aerosol primer can be applied directly to bare metal and many plastics. Graffiti artists are known to use spray paint because the medium is quick, permanent, and portable. The origin of the product, however, dates back to 1949, when it was designed for the very practical purpose of applying aluminum paint coatings to radiators. In 1949, Edward H. Seymour, of Sycamore, Illinois, added paint to existing spray can technology at his wife Bonnie's suggestion. It was initially designed to demonstrate an aluminum paint he developed. His patent was awarded in 1951. Most aerosol paints also have a metal, marble, glass or plastic ball called a pea inside of the can, which is used to mix the paint when the can is shaken. Acrylic-based craft primers and vinyl dye can be used on plastics like models or miniatures. Most brands include a wide variety of paints, including primers, heat, and traffic resistant enamels, gloss and matte finishes, metallic colors, and textured paints for home decor. Aerosol paint is useful for quick, semi-permanent marking on construction and surveying sites. Inverted cans for street, utility or field marking can be used upside-down with an extension pole. APWA (American Public Works Association) has standardized colors for utility and excavation markings. Hiking trails can also be marked with aerosol paint trail blazes. Small to medium-sized repairs to automobile bodywork can be completed by enthusiasts at home using aerosol paint, though to paint an entire vehicle in this manner would be difficult and expensive.