page_title: Two roll rubber mill
hierarchical_section_title: Two roll rubber mill
caption_attribution_description: Scope and content: Original Caption: Tires manufactured for government use. Milling compounding ingredients into the washed and dried crude rubber. In this process the required qualities are given to the rubber for use in various parts of the tire or tube. United States Tire Company plant, New York.
context_page_description: Natural rubber, which is harvested from a rubber tree, hevea brasiliensis is the base for many rubber compounds made using a two roll rubber mill. Rubber trees are tapped to remove the latex that is stored in their trunks. This material can then be mixed with additional ingredients to create rubber. Other natural sources of rubber are obtained from the Sapotaceae and Palaquium trees native to the Malay peninsula, as well as the Mimusops globoosa tree native to Panama.Synthetic rubbers have also been created and are also used to create rubber compounds.
  In the 1830s, Edwin Chaffee developed a technology similar to the two roll rubber mills that are used in rubber production. His machine included multiple rollers that were used to flatten rubber into thin sheets. Chaffee then created the two roll rubber mill which shears and mixes the rubber by having two rolls rotate in opposite directions, at different speeds. The two roll rubber mill is used in almost every rubber production facility today. Many other inventors created rubber mills with varying degrees of similarity to Chaffee's initial designs.
caption: Rubber being produced using a two roll rubber mill.
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