Thin sheets {paper} can be for written records.
material
Paper has cotton, flax, or tree cellulose fibers. Cotton and flax amount {rag content} determines paper quality.
process
Shred wood pulp, cotton, or flax. Added chemicals can make paper water resistant, colorful, or white. Added clay or chalk makes smoother surface, with less porosity.
Wash with chemicals to remove impurities. Bleach. Cook bleached mixture with lime or caustic soda in vat.
Long thin slit on vat bottom edge empties onto wire-mesh belt to make a thin layer of wet paper. Water drips through mesh as belt travels. The thin mat squeezes through hard rubber rollers to remove water.
Final roller can apply watermark. Paper {crepe paper} can wrinkle when still wet. Mat passes through oven and steel rollers to dry completely.
thick compressed wood fibers {beaverboard}.
thick dense cotton-fiber and glue paper {Bristol board}.
paper pulp board {cardboard}.
fibers pressed into solid {fiberboard}.
thin glazed paper {glassine paper}.
thick paper {manila}.
hard fiberboard {Masonite}.
thin translucent paper {onionskin}.
parchment used more than once {palimpsest}|.
pasted paper sheets {pasteboard}.
paper or cardboard sheets bonded by plaster {plasterboard}.
printed computer output {printout}.
powdered-rice sheets {rice paper}.
parchment or papyrus roll {scroll}.
diploma paper {sheepskin}.
heavy paper soaked in tar {tarpaper}.
paper soaked in wax {waxed paper}.
scraped, washed, pared, dusted with chalk, and rubbed with pumice stone sheepskin or goatskin {parchment}.
Parchment {vellum} can use real or imitation calfskin.
Paper sheets {crown, paper}| can be 15 inches by 20 inches.
Paper sheets {demy}| can be 17.5 inches by 22.5 inches.
Paper sheets {foolscap}| can be 13.5 inches by 17 inches.
7-Machine-Industrial Materials-Organic Chemical
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Date Modified: 2022.0225