Polyvinyl chloride in the context of "Phonograph record"


Following the 1940s, phonograph records transitioned from being primarily made of shellac to utilizing polyvinyl chloride (PVC), a material that allowed for longer playing times and became the standard for record production, persisting to the present day.

⭐ In the context of phonograph records, polyvinyl chloride (PVC) is considered…


⭐ Core Definition: Polyvinyl chloride

Polyvinyl chloride (alternatively: poly(vinyl chloride), colloquial: vinyl or polyvinyl; abbreviated: PVC) is the world's third-most widely produced synthetic polymer of plastic (after polyethylene and polypropylene). About 40 million tons of PVC are produced each year.

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HINT: After the 1940s, PVC became the standard material for record production, replacing shellac and allowing for the creation of records with extended playing times, such as LPs and 45s.

👉 Polyvinyl chloride in the context of Phonograph record

A phonograph record (also known as a gramophone record, especially in British English) or a vinyl record (for later varieties only) is an analog sound storage medium in the form of a flat disc with an inscribed, modulated spiral groove. The groove usually starts near the outside edge and ends near the center of the disc. The stored sound information is made audible by playing the record on a phonograph (or "gramophone", "turntable", or "record player").

Records have been produced in different formats with playing times ranging from a few minutes to around 30 minutes per side. For about half a century, the discs were commonly made from shellac and these records typically ran at a rotational speed of 78 rpm, giving it the nickname "78s" ("seventy-eights"). After the 1940s, "vinyl" records made from polyvinyl chloride (PVC) became standard replacing the old 78s and remain so to this day; they have since been produced in various sizes and speeds, most commonly 7-inch discs played at 45 rpm (typically for singles, also called 45s ("forty-fives")), and 12-inch discs played at 33⅓ rpm (known as an LP, "long-playing records", typically for full-length albums) – the latter being the most prevalent format today.

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