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A cellulosic material, developed by the Scheufelen Paper Company of Germany and processed primarily as a paper, carbonizes in the presence of a flame but does not propagate the flame. This nonflammable characteristic is evident in both air and oxygen-enriched atmospheres. This paper lends itself well to printing and, with some minor exceptions, has physical properties that are comparable to conventional paper.
This paper can be processed into a continuous roll of 0.5-inch-thick foam, similar to papier-mache. When placed on a ceiling, for example, the foam has both the appearance and function of conventional acoustic tile and offers the additional advantage of nonflammability.
In addition to the paper, a process called Laminite which treats cellulose-base fiberboard with ammonium aluminum sulfate has been evolved.
The resultant material is minimally flammable in oxygen and nonflammable in air. It can be formed wet, coated, cemented, and Joined like a composite; yet it is lightweight and inexpensive.[/i]
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