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Formica is a laminated composite material invented at the Westinghouse Electric Corporation in the United States in 1912. Originally used to replace mica in electrical applications, it has since been manufactured for multiple applications.
Once manufactured the tops need only to be cut to length, mitered, fitted for assembly, and end capped (only if it is a visible finished end). A very specific machine for cutting the postform countertop is manufactured by only a few companies, it is commonly called a Cutting Station, Top Saw, or simply Miter Saw. This machine accurately cuts ...
Alternately, resin casting may be accomplished with a resin plus a nearly equal amount of a "hardener" liquid (as in many epoxy resin or polyester resin systems), which functionally contains a second polymer, for use in forming a final product plastic which is a copolymer. Copolymers contain two different alternating chemical entities in the ...
BPA is fairly cheap to produce, as the synthesis benefits from a high atom economy and large amounts of both starting materials are available from the cumene process. [7] As the only by-product is water, it may be considered an industrial example of green chemistry. Global production in 2022 was estimated to be in the region of 10 million ...
Limestone was classified as a critical raw material, and with the potential risk of shortages, it drove industries to find new alternative materials and technological systems. This allowed limestone to no longer be classified as critical as replacement substances increased in production; minette ore is a common substitute, for example. [126]
The lantern is the large round glass structure, that houses the lens, located at the top of the lighthouse. This structure is made out of multiple materials, primarily glass, wood, and iron. Any conservation or restoration processes should keep in mind that the lantern, ventilation shafts, and lens should not be obstructed in any way.
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