Composite material reinforcement materials. Another important factor is the gross quantity of material to be produced. Large quantities can be used to justify high capital expenditures for rapid and automated manufacturing technology. Small production quantities are accommodated with lower capital expenditures but higher labour and tooling costs at a correspondingly slower rate. Many commercially produced composites use a polymer matrix material often called a resin solution. There are many different polymers available depending upon the starting raw ingredients. There are several broad categories, each with numerous variations. The most common are known as polyester, vinyl ester, epoxy, phenolic, polyimide, polyamide, polypropylene, PEEK,
Berliner Gramophone though this has since been disproven. The Kämmer & Reinhardt venture did not last very long, though just how long is unclear. In the early 1890s, Berliner attempted to found his first American company, the American Gramophone Company, in New York City, but it fell apart before issuing a single machine or disc. Back in Washington, D.C., Berliner tried again under the name of the United States Gramophone Company and began to manufacture machines and 7-inch hard rubber discs in 1894. Some celluloid discs were also made. In 1895, hard rubber was replaced by a shellac compound, which in various