subject: History Of The Development Of Plastic Extrusion Machine [print this page] History of the development of plastic extrusion machine
The extruder originated in the 18 century, England J oseph B ra, ma h manufactured in 1795 for the manufacture of seamless plumbing manual piston extruder is considered to be the world's first extruder . Since then, 50 years, 19 centuries ago, the extruder is basically only used in the production of lead pipe, pasta and other food processing, brick and ceramic industry.
A clearly documented is the R in the process of development as a manufacturing method. B rooman in the extruder to produce solid Elliott plastic wire patent application in 1845. Over the next 25 years, the extrusion method 13 gradually important and gradually manipulated by an electric extruder has rapidly replaced the previous manual extruder. The early mechanical manipulation of the plunger-type extruder to produce tens of thousands of kilometers of insulated wire and cable, in order to firmly establish the position of extrusion for the production of cable. Early production of the cable extruder, whether manual, mechanical or hydraulic, all the plunger. In this production process, the plunger will be hot gutta-percha pressure into through the copper wire die, gutta-percha extrusion from the die, thus coated on the insulating layer formed on the copper wire.
Twin Screw Extruder machine feeding characteristics for powder processing, and better mixing, exhaust, response and self-cleaning function than the single-screw extruder, is characterized by the processing of poor thermal stability, plastics and blends also show its superiority. On the basis of the Twin Screw Extruder to make it easier processing heat stability of mixing and now has developed a multi-screw extruder.
