Forest Products, Their Manufacture and Use; Embracing the Principal Commercial Features in the Production, Manufacture, and Utilization of the Most Important Forest Products Other Than Lumber, in the United States
Forest Products, Their Manufacture and Use; Embracing the Principal Commercial Features in the Production, Manufacture, and Utilization of the Most Important Forest Products Other Than Lumber, in the United States
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1919 Excerpt: ...to the benefit of the industry at large. After a careful survey of successes and failures up to the present time, experts interested in the improvement of the industry are generally agreed that this principle is a sound one. According to John E. Teeple, in a given 5000 lb. of rich fat lightwood stumps, there is about ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1919 Excerpt: ...to the benefit of the industry at large. After a careful survey of successes and failures up to the present time, experts interested in the improvement of the industry are generally agreed that this principle is a sound one. According to John E. Teeple, in a given 5000 lb. of rich fat lightwood stumps, there is about 20 per cent or 1000 lb. of rosin, 40 gal. of turpentine and pine oil, and 750 lb. of water. This leaves about 3000 lb. of wood fiber. By destructive distillation of the above sample the manufacturer may derive all of the turpentine, but only a small portion of the pine Oils before the disintegration of the rosin and wood. These oils are valuable and no satisfactory method exists at the present time of extracting them from the decomposed products. It is believed that a combination of the softwood distillation industry and the paper industry can be brought about to profitable commercial advantage. The present method of steam distillation leaves the fiber of the residue unchanged. It is possible to operate these plants successfully if the minimum price for turpentine is not less than 50 cents per gallon and for rosin $5.00 per barrel. At the introduction of the solvent method it was believed that prices would not reach the minimum levels again, but in January, 1916, rosin was selling at $3.00 per barrel and turpentine at only 38 cents per gallon. The 3000 lb. of fiber mentioned in Teeple's experiment contains a certain proportion of bark, but may make about 1500 lb. of wood pulp. This pulp is not satisfactory to use in the manufacture of white papers, but experiments conducted by the U. S. Forest Service have indicated that it will produce an excellent quality of kraft paper. A combination of a process removing all of the distillate products from ...
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