Cracker and Refiners Mills
The process In the manufacture of most rubber products, the rubber is mixed with various substances, formed and then vulcanized. The vulcanization process usually involves heating rubber to which a vulcanizing agent, such as sulfur, has been added. First up is the masticating process where natural and synthetic rubber raw materials are incorporated into a mixer, accompanied with oils, fillers and additives to prepare the desire compound. Homogeneousness is also enhanced during mixing cycle by continuous dispersion of fillers and additives. Second is the milling process that shapes the rubber into flat, long strips by forcing it through two adjacent, heavy, hardened-steel, counter-rotating horizontal rolls. Generally, they revolve at slightly different speeds. Mill rolls are hollow and may be heated or cooled as needed. After the mixing cycle, rubber slabs are conveyed into a batch off for cooling.
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