glass fibers
One of the more unusual man-made fibers being used
commercially in the manufacture of special papers,
although not at this time being used to make
printing papers. Glass fibers are inert, or
insensitive, to most external influences, and, in
addition, are vermin proof, do not absorb
moisture, or burn. Because of the physical nature
of these fibers, the properties of glass fiber
papers are unique and different from those of all
cellulose papers; however, they do not bond
together as do cellulose fibers, and must,
therefore, be used in mixtures with cellulose
fibers, or bonded with synthetic resins. The two
basic types of glass fibers are the drawn glass
filaments and the blown glass fibers. (47 )