Development Of Vinyl

By the mid 1980s more cassettes than vinyl records were sold.

Development of vinyl.

Generally unsaturated polyester resins including conventional vinyl resins shrink when cured and can. Beginning in 1939 columbia records continued development of this technology. Beginning in 1939 columbia records continued development of this technology. At first the discs were commonly made from shellac with earlier records having a fine abrasive.

As a range of unsaturated polyester resins vinyl ester resins have higher activity and faster curing reaction resulting in a larger curing shrinkage rate after curing of the vinyl ester resin. For audiophiles everywhere it remains the singular most impressive format of recording and reproducing music. Vinyl had the advantage of lower surface noise level than shellac and was more durable. Eight track and cassette tapes were introduced in the 1960s.

Peter goldmark and his staff undertook exhaustive efforts to address problems of recording and playing back narrow grooves and developing an inexpensive reliable consumer. A phonograph record also known as a gramophone record especially in british english or simply a record 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 periphery and ends near the center of the disc. Because vinyl records can become scratched warped and dirty other formats slowly took over.

In 1982 the digital compact disc came to market and superseded both cassettes and lps by 1991. Development of low shrinkage vinyl resin.