Process
The process started with paper made from cotton rags. Before the processing of wood pulp and chemical wood pulps in the mid-19th century, the dominant fibre source for paper making was cotton and linen rags. The cotton rag sheet produced for conversion to vulcanized fibre is made like a sheet suitable for saturating. A paper is made for saturating by omitting any sizing additive, either beater added or surface applied. Today most paper sheets made for writing, printing, and coating have internal (beater added) sizing provided by rosin, alkyl succinic anhydride (ASA), or alkyl ketene dimer (AKD) and surface sizing provided by starch. A sheet made for saturating would have none of those chemical ingredients. The unsized saturating cotton fibre paper prepared for vulcanized fibre would be passed through a vat containing a zinc chloride solution.
Read more about this topic: Vulcanized Fibre
Famous quotes containing the word process:
“... geometry became a symbol for human relations, except that it was better, because in geometry things never go bad. If certain things occur, if certain lines meet, an angle is born. You cannot fail. It’s not going to fail; it is eternal. I found in rules of mathematics a peace and a trust that I could not place in human beings. This sublimation was total and remained total. Thus, I’m able to avoid or manipulate or process pain.”
—Louise Bourgeois (b. 1911)
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—Madeleine [Blair], U.S. prostitute and “madam.” Madeleine, ch. 4 (1919)
“A process in the weather of the world
Turns ghost to ghost; each mothered child
Sits in their double shade.
A process blows the moon into the sun,
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And the heart gives up its dead.”
—Dylan Thomas (1914–1953)