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Cellulose nitrate (c. 1889 – c. 1950) is the first of film supports.It can be found as roll film, motion picture film, and sheet film. It is difficult to determine the dates when all nitrate film was discontinued, however, Eastman Kodak last manufactured nitrate film in 1951. [1]
Stacked film cans containing rolls of film. Film preservation, or film restoration, describes a series of ongoing efforts among film historians, archivists, museums, cinematheques, and non-profit organizations to rescue decaying film stock and preserve the images they contain. In the widest sense, preservation assures that a movie will continue ...
Plastic composites or proprietary blends can be more difficult to identify. If there are no markings to identify the type of plastic used, it may still be identified by using various types of spectroscopic technology such as optical spectrometer, Raman mid-infrared spectroscopy, [4] and near-infrared spectroscopy, along with mass spectrometry. [3]
A film can is the light-tight container used to enclose film stock. They are typically a circular box pressed from thin sheet metal, but plastic examples are also used. Film cans are used to hold unexposed film, exposed film ready for developing and also for the distribution of completed film prints. The last of these does not require the can ...
Cellulose diacetate film was first created by the German chemists Arthur Eichengrün and Theodore Becker, who patented it under the name Cellit, from a process they devised in 1901 for the direct acetylation of cellulose at a low temperature to prevent its degradation, which permitted the degree of acetylation to be controlled, thereby avoiding total conversion to its triacetate.
Sealed food alongside a home vacuum sealer and plastic rolls used for sealing. Vacuum packing is a method of packaging that removes air from the package prior to sealing. This method involves placing items in a plastic film package, removing air from inside and sealing the package. [1]
The National Film Registry (NFR) is the United States National Film Preservation Board's (NFPB) collection of films selected for preservation, each selected for its historical, cultural and aesthetic contributions since the NFPB's inception in 1988.
Ways in which film can be repaired from tears include using splicing tape, film cement, making splices, and repairing perforations by replacing torn sprockets holes. [32] The access stage of film preservation also provides researcher the ability to use the scholarly materials otherwise unavailable. [32]
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