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"Pecherei" is the common expression in southern Lower Austria for the practice of Resin Extraction from black pine trees (). [1] This profession centers around the extraction of tree resin, also known as "Pitch," that will ultimately be used in the production of further chemical products. [1]
Resin circulates throughout a coniferous tree and a few others, and serves to seal damage to the tree. Harvesting pine resin dates back to Gallo-Roman times in Gascony . Tapping pines may either be done so as to sustain the life of the tree, or exhaustively in the years before the tree is cut down.
With the demise of wooden ships, those uses of pine resin ended, but the former naval stores industry remained vigorous as new products created new markets. First extensively described by Frederick Law Olmsted in his book A Journey in the Seaboard Slave States (1856), [3] the naval stores industry was one of the economic mainstays of the southeastern United States until the late 20th century.
Rosin (/ ˈ r ɒ z ɪ n /), also known as colophony or Greek pitch (Latin: pix graeca), is a resinous material obtained from pine trees and other plants, mostly conifers. The primary components of rosin are diterpenoids, i.e., C 20 carboxylic acids. Rosin consists mainly of resin acids, especially abietic acid. [1]
Turpentine and pine oil may be recovered by steam distillation of oleoresin or by destructive distillation of pine wood. Solvent extraction of shredded stumps and roots has become more common with the availability of inexpensive naphtha. Rosin remains in the still after turpentine and water have boiled off. [6]
Pitch produced from petroleum may be called bitumen or asphalt, while plant-derived pitch, a resin, is known as rosin in its solid form. Tar is sometimes used interchangeably with pitch, but generally refers to a more liquid substance derived from coal production, including coal tar, or from plants, as in pine tar. [2]
Resin workers were people whose work involved the extraction or working of resin, which was needed as a raw material in the manufacture of pitch, tar and turpentine. Resin work was an occupation that largely died out in the 19th and 20th centuries, but it was sometimes a primary occupation as well as a secondary source of income.
In the narrow sense of the terms, wood, forest, forestry and timber/lumber industry appear to point to different sectors, in the industrialized, internationalized world, there is a tendency toward huge integrated businesses that cover the complete spectrum from silviculture and forestry in private primary or secondary forests or plantations via the logging process up to wood processing and ...