UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Sanders plug suffering the effects of damp.

Lucien Nunes · 16th Oct 2018, 4:34 pm

'Nitrate' film, used until the early 1950s, 'celluloid', and nitrocellulose a.k.a guncotton are all basically the same material, partially or fully nitrated cellulose with or without plasticisers. The flammability of nitrate film mandated elaborate safety precautions in projection boxes and on projector mechanisms, both to extinguish the fire and to prevent it spreading from the source of ignition (the heat of the lamp on the film in the gate) to the film in the spool boxes. I am not aware of small celluloid components in equipment combusting though.

16th Oct 2018, 4:34 pm	#19
Lucien Nunes Rest in Peace Join Date: Apr 2008 Location: London, UK. Posts: 2,508	Re: Sanders plug suffering the effects of damp. 'Nitrate' film, used until the early 1950s, 'celluloid', and nitrocellulose a.k.a guncotton are all basically the same material, partially or fully nitrated cellulose with or without plasticisers. The flammability of nitrate film mandated elaborate safety precautions in projection boxes and on projector mechanisms, both to extinguish the fire and to prevent it spreading from the source of ignition (the heat of the lamp on the film in the gate) to the film in the spool boxes. I am not aware of small celluloid components in equipment combusting though.