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PTFE fibres are unique in that they combine the resistance to chemicals, solvents
, and elevated temperatures associated with inorganic fibres derived from
mineral sources, with the flexibility and toughness typical of many organic fibres ...
to improve the chosen fibre. A stage is commonly reached in the development of
a new technologicallybased industry where consolidation becomes necessary,
and the synthetic industry reached this stage, to a large degree, in the 1960s.
In 1968–69, natural fibres accounted for over 70 percent of the world's total fibre
production, with cotton remaining the most important. Estimated total annual
world production of natural fibres in this period amounted to about
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This is the 198215th Edition, in two halves, with the Macropaedia and the Micropaedia. First published in 1768, the publisher is the oldest English-language encyclopedia still in print. Two Scottish ... Read full review