French custom designs, manufactures and supports oilseed preparation equipment and screw presses, sometimes referred to as oil expeller presses. These oil extraction machines gather vegetable oil from oil-bearing seeds and nuts for food and industrial uses, including biodiesel and other fuels.
What is expeller pressing used for?
In the edible oil industry, expeller pressing is used to produce cooking oils, salad oils, margarine, shortening, etc. from various seeds and nuts, such as soybean, canola, sunflower, cottonseed, peanut, castor and flax. In the biodiesel industry, expeller pressing is used to produce biodiesel from vegetable oils or animal fats.
How does an expeller press work?
Expeller pressing is based on the principle of applying pressure and friction to the raw materials to squeeze out the oil. An expeller press is a screw-type machine that consists of a barrel, a screw, a hopper, a motor and an outlet. The raw materials are fed into the hopper and then conveyed into the barrel by the screw.
What are the three stages of expeller pressing?
The process of expeller pressing can be divided into three stages: pre-treatment, pressing and post-treatment. Pre-treatment: This stage involves preparing the raw materials for optimal oil extraction.