different paper types

-Paper may be between 0.07 millimetres (0.0028 in) and 0.18 millimetres (0.0071 in) thick.

-Printing paper is generally between 60 g and 120 g. Anything heavier than 160 g is considered card.

-The ISO 216 system used in most other countries is based on the surface area of a sheet of paper, not on a sheet's width and length. It was first adopted in Germany in 1922 and generally spread as nations adopted the metric system.

-The largest standard size paper is A0 (A zero), measuring one square meter (approx. 1189x841 mm). Two sheets of A1, placed upright side by side fit exactly into one sheet of A0 laid on its side. Similarly, two sheets of A2 fit into one sheet of A1 and so forth.

-Common sizes used in the office and the home are A4 and A3 (A3 is the size of two A4 sheets).

SEVEN PAPER CATEGORIES:

    Printing papers of wide variety.
    Wrapping papers for the protection of goods and merchandise. This includes wax and kraft papers.
    Writing paper suitable for stationary requirements. This includes ledger, bank, and bond paper.
    Blotting papers containing little or no size.
    Drawing papers usually with rough surfaces used by artists and designers, including cartridge paper.
    Handmade papers including most decorative papers, Ingres papers, Japanese paper and tissues, all characterized by lack of grain direction.
    Specialty papers including cigarette paper, toilet tissue, and other industrial papers.

HISTORY

-The oldest known archaeological fragments of the immediate precursor to modern paper date to 2nd century BC China.

-Papermaking is considered one of the Four Great Inventions of China

-With paper an effective substitute for silk in many applications, China could export silk in greater quantity, contributing to a Golden Age

-Paper spread from China through the Islamic world to medieval Europe in the 13th century, where the first water-powered paper mills were built.

-In the 19th century, industrial manufacture greatly lowered its cost, enabling mass exchange of information and contributing to significant cultural shifts

-In 1844, Canadian inventor Charles Fenerty and German F.G. Keller independently developed processes for pulping wood fibers.