Rubber profiles are processed rubber products. They are produced by a rubber extruder and can be of any length or size. Rubber profiles are the most widely used and manufactured forms of rubber extrusions, and some manufacturing companies deal solely in custom extrusion profile orders, which is quite profitable.
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Most extrusion lines begin with a collection of raw rubber material, or stock, that is passed through a hopper and directed into a conveyance channel. Within most rubber extrusion conveyance channels is a screw that pressurizes the rubber as it is heated. As the rubber passes through the conveyance channel, it becomes semi-liquefied. At that point it is ready to pass through the die. A die is a tool that is used to mold a raw material into a usable form. A die can be configured in any shape, and for this reason an extruded rubber profile can take any shape. The semi-liquefied rubber is simply forced into the die, and when it emerges it cools, hardens and is ready to be cut and shipped. Most varieties of rubbers can be extruded; depending on the raw materials' composition, the process requires different processing times and temperatures. Silicone rubber, for example, requires higher temperatures to be become liquefied. If the profile requires additional treatment for improved strength or durability, a number of curative or treatment procedures may be performed to enhance the suitability of the extrusion for a particular application.
