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Although single layer polycarbonate sheeting is more flexible than polycarbonate in twinwall configuration, it still retains significant advantages over alternative materials, including glass. A typical 6mm sheet has a density of 0.72 g/cm^2 [6] and a thermal insulation R value of 0.3 m^2°C/W, while allowing 80% of visible light pass through. [7]
A major polycarbonate market is the production of compact discs, DVDs, and Blu-ray discs. [13] These discs are produced by injection-molding polycarbonate into a mold cavity that has on one side a metal stamper containing a negative image of the disc data, while the other mold side is a mirrored surface.
The Shawneetown Bank State Historic Site is an historic bank building in Old Shawneetown, Illinois, and is the oldest structure in Illinois built specifically as a bank. [2] A Greek Revival structure built in 1839–1841 in what was then called Shawneetown, it was the home of a series of banks into the 20th century.
The acoustical laboratory building was funded and built by Colonel George Fabyan on his vast Riverbank Estate in Geneva, Illinois. [4] Colonel Fabyan was a patron of obscure sciences, and references to his "Riverbank laboratories" exist as early as 1916. [5]
In February 1929, Karlson convinced Nils F. Testor (1903–1967), then the manager of an F. W. Woolworth store in the Swedish district of Rockford, Illinois, to serve as office manager of his new enterprise. It was a relatively risky move for Testor, who began his career as a stockroom boy in Woolworth's Chicago store on State Street.
Corrugated plastic box used as reusable packaging Corrugated plastic dividers used to pack automotive components A Velomobile enclosed in corrugated plastic. Corrugated plastic or corriboard – also known under the trade names of Correx, Biplex, Cartonplast, Polyflute, Coroplast, FlutePlast, IntePro, Proplex, Twinplast, Corriflute and Corflute – refers to a wide range of extruded twin-wall ...
CAMPUS (acronym for Computer Aided Material Preselection by Uniform Standards) is a multilingual database for the properties of plastics. It is considered worldwide as a leader in regard to the level of standardization and therefore, ease of comparison, of plastics properties.
In 1946, Hawk produced one of the first all-plastic model kits, the Curtiss R3C-1 racer. [8] Four additional kits (all classic 1930s racers) were added in 1948; the Gee Bee, Howard Ike, Laird Solution and Supermarine S6B. These early kits were molded in acetate plastic, but from 1949 Hawk employed polystyrene in its injection-molding process. [9]