Historia Papel
Paper is made ??with a thin sheet of vegetable fiber pulp are ground, bleached, diluted with water, dried and then hardened; to the cellulose pulp typically substances are added as polypropylene or polyethylene in order to provide various characteristics. The fibers are bonded by hydrogen bridge links. Also referred to as paper, foil or foil to its more common as foil.precedents
In Ancient Egypt was written on papyrus (from which the word paper), which was obtained from the stem of a plant very abundant on the banks of the Nile (Cyperus papyrus). In Europe during the Middle Ages, parchment was used that consisted of skins of goats or sheep tanned, ready to receive the ink, which unfortunately was rather expensive, which caused from VIII century popularized the unfortunate habit deleting the text of the scrolls for overwriting (resulting in palimpsests) thus losing a valuable amount of work.
the role
However, the Chinese were producing paper from waste silk, rice straw and hemp, and even cotton. Is traditionally considered the first papermaking process was developed by the eunuch Cai Lun, an advisor to Emperor He of Han, in S. II d. C. For about 500 years, the art of papermaking was confined to China, in the year 610 was introduced in Japan, and about 750 in Asia central.1 knowledge was transmitted to the Arabs, who in turn took him to what are now Spain and Sicily in the tenth century The paper-making spread to France that produced using linen from the twelfth century.