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Pulpwood and Wood Pulp in North America

Nature volume 114, pages 4748 (12 July 1924) | Download Citation



THE manufacture of paper from wood pulp began on a commercial scale in 1854, as before that date the raw material ordinarily used was cotton and linen rags, esparto grass, straw, and hemp. The first process of making paper from timber was a purely mechanical one, by which the fibres of the wood, after being torn apart by grindstones under a stream of water, were transformed into so-called “mechanical “pulp, which is still the source of the cheaper kinds of paper. Tilghman in 1867 discovered the disintegrating action of sulphurous acid upon wood; and this formed the basis of the invention)f the sulphite process, which was started commercially in Sweden in 1874. The resulting product, “chemical “wood pulp, is used for the better classes of paper.

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