“The
flexi disc (also known as a
phonosheet,
Sonosheet or
Soundsheet, a trademark) is a
phonograph record made of a thin, flexible vinyl sheet with a molded-in spiral
stylus groove, and is designed to be playable on a normal
phonograph turntable. Flexible records were commercially introduced as the
Eva-tone Soundsheet in 1962, and were very popular among children and teenagers and mass-produced by the state publisher in the
Soviet government. Before the advent of the
compact disc, flexi discs were sometimes used as a means to include sound with printed material such as
magazines and music instruction books. A flexi disc could be moulded with speech or music and bound into the text with a perforated seam, at very little cost and without any requirement for a hard binding. One problem with using the thinner vinyl was that the stylus's weight, combined with the flexi disc's low mass, would sometimes cause the disc to stop spinning on the
turntable and become held in place by the stylus. ...”
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