In ancient times, during the first
centuries, for the preservation of written texts, bookbinding did
not exist, because the substratum of writing did not have the need
of bookbinding as we mean it today. That is because several kinds
of substratum of writing, like rock, ivory, ceramics and other
similar kinds did not demand protecting coverage.
In the next years, when the human being began to use several
substratum writings originating from plants and animals (because
they were and are sensitive), get damaged easily with frequent
use and different other factors of ruin there was a need for the
use of protecting coverage.