How does traditional oil expellar work?
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An expeller press is a screw-type machine that presses oil seeds through a caged barrel-like cavity. ... The machine uses friction and continuous pressure from the screw drives to move and compress the seed material. The oil seeps through small openings that do not allow seed fiber solids to pa.ss through.
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in order to squeeze the most oil out from the raw materials, more than one method is used, often, the two methods are used together. Usually press the material firstly by a screw type press machine and then get the rest of oil in the meal by using chemical solvent.
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