Development history of auxiliary equipment for plastic extruders

Extruders originated in the 18th century. The manual piston extruder for seamless lead pipes manufactured by Joseph Bramah (England) in 1795 is considered to be the world's first extruder. From then on, during the first 50 years of the 19th century, extruders were basically only used for the production of lead pipes, macaroni and other food processing, brick and ceramic industries. In the development process as a manufacturing method, the first clear record was the patent applied by R. Brooman in 1845 for the production of Gutebo rubber wires using an extruder. H. Bewlgy of Gutebo subsequently improved the extruder and used it to coat the copper wire of the first submarine cable between Dover and Calais in 1851. In 1879, the British M. Gray obtained the first patent for an Archimedean spiral screw extruder. In the following 25 years, the extrusion method gradually became important, and the previous manual extruders were quickly replaced by electric extruders. In 1935, German machinery manufacturer Paul Troestar produced an extruder for thermoplastics. In 1939, they developed the plastic extruder to its present stage - the modern single-screw extruder.