Ad
related to: products made from pine sap and resin for sale
Search results
Results from the WOW.Com Content Network
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.
Pine trees especially in North Carolina were tapped for sap which was doubly distilled to make turpentine and rosin (aka resin)–hence the name tar heels. The trees were scored with a ledge called a “box” to collect the sap. Large numbers of slaves were used to score the trees, collect and process the sap. Zallen describes this as ...
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]
The main reason for this was the fact that cheaper, comparable products were being imported from eastern-bloc countries (communist countries during the cold war) as well as from Turkey, Greece, and Portugal. [3] [4] Also, around this time there were numerous advances in technical chemistry that made resin less necessary for numerous products ...
Coniferous tree sap is a viscous liquid that contains terpene, a volatile hydrocarbon. Over time the evaporation of the terpene changes the state of the sap; it slowly gets thicker until it hardens into resin. New fatwood leaks the sticky sap, while in aged fatwood the sap has hardened and is no longer sticky.
Resin is usually collected by causing minor damage to the tree by making a hole far enough into the trunk to puncture the vacuoles, to let sap exit the tree, known as tapping, and then letting the tree repair its damage by filling the wound with resin. This usually takes a few days. Then, excess resin is collected.
For premium support please call: 800-290-4726 more ways to reach us
In plumbing and marine applications, the fibers are impregnated with tar or a tar-like substance, traditionally pine tar (also called "Stockholm tar"), an amber-coloured pitch made from pine sap. Tar-like petroleum by-products can also be used for modern oakum. "White oakum" is made from untarred material, [1] and was chiefly used as packing ...
Ad
related to: products made from pine sap and resin for sale