engineering question #1950



Lindsay, a 22 year old female from New York City asks on March 2, 2004,

Q:

What is the chemical make-up of film? I am searching for a detailed make-up of either 35mm film for photography or film that is used in the cinema.

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the answer

Barry Shell answered on March 2, 2004, A:

The main ingredient or the base of many films is cellulose triacetate, also known as "celluloid". Nowadays, modern film base is kind of polyester. A diagram of the layers of photographic film can be found at Kodak.

A history of the plastic for film can be found at the Plastics Historical Society.

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