[78-L] Pressed in WHAT material...

[Royal Pemberton]

Polyvinyl chloride was developed in the 1930s, and was used for pressing
transcriptions almost immediately.  It wasn't used for commercially released
records until the late 1940s.

Very early cylinders were a kind of wax compound, but by the 1890s a harder
compound Edison came to describe as a 'metallic soap' was used.  The Lambert
company was one of the first to use celluloid to mould his cylinders from
(these cylinders had a cardboard core), and Edison began using celluloid for
his Blue Amberol cylinders (using a plaster of Paris core).

You are correct, AFAIK bakelite was never used for record manufacture.

On Mon, Nov 16, 2009 at 8:10 AM, Milan P Milovanovic <
milanpmilovanovic4 at gmail.com> wrote:

> Hello list members,
>
> I came across this article:
> http://en.wikipedia.org/wiki/Shellac
>
> Also this one:
> http://en.wikipedia.org/wiki/Bakelite
>
> Both claimed that "some" records were made from bakelite:
>
> "Until the advent of vinyl around the 1940s, most gramophone records were
> pressed from shellac compounds (although some were made from bakelite)"
>
> "Recording cylinders produced by the Edison Electric Company (now General
> Electric) and 78-rpm phonograph records were originally made of Bakelite. "
>
> I would like to know if such statements are close to the truth. I always
> thought that no bakelite was used in phonograph record production.
>
>
> Thanks,
>
> Milan
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