How Is The Plastics Made—Plastic Extrusion Machinery

Curiosity drives us to discover new horizons, to look for new and better ways to do things, and to question everything.Human beings are inherently curious creatures, and indeed, without this natural attribute, it is doubtful if we would have advanced as far as we have. Its not surprising then, that people not involved in manufacturing, or who have never been inside a factory, are often quite curious about how ordinary, every day commodities such as plastic, are made. Even the science involved in the plastic extrusion machinery process is interesting, and how the industry has developed different types of plastics. While ordinary people may not quite know how its done, they can appreciate it.

This rotating screw lies inside a cylindrical shaped heated barrel and as the plastic material passes through, it softens from the friction and heat.Most people wouldn't know that the life cycle of PVC Plastic starts in raw material form as powder or pellets. This plastic material is added to a machine known as an extruder, and is propelled forward through the plastic extrusion machinery by a rotating screw. The plastic material, now softened, is a continuous piece which is pushed through a die at the end of a barrel and is cooled and solidified in water. Still on a moving conveyor, the softened extruded material is pulled through take-off rollers and off the die, which is a metal plate attached to the end of the extruder. This die has a hole cut into it to match the desired shape of the plastic. The cross-section of the finished plastic depends on the speed of the take-off rollers and the shape of the hole in the die.

Depending on clients requirements and material to be used, a number of different extrusion processes can be used. For example, with co-extrusion, different types of plastic can be produced in the same production line.The plastic extrusion machinery process is completely automatic, and while the initial purchase of the machines is expensive, there are considerable cost savings in labor throughout the life of the machine. The continuous dimension checks and automatic machine adjustments allow the plastic manufacturers to make anything from simple tubes and rods to complex window profiles. Extrusion also allows for the production of larger items right up to pipe with a dimension of 150cm.

The engineers who originally conceived the idea of the plastic extrusion process were quite remarkable. Plastic can now replace materials such as metal in a wide variety of ways. As it costs less to produce it, overall cost is lower. Uses for light-weight plastic have opened up new markets and expanded the range of inventions. For plastic to become obsolete is quite not possible. Qingdao Chaofeng Plastic Machinery Co., Ltd. is a specialized manufacturer of plastic machinery .Specifically, the main products include plastic pipe/profile production line, such as PE/PVC/PP Plastic extrusion machinery ;board line;  wood and plastic composite sheet/profile production line; plastic sheet production line ; PET/PP strap production line; as well as various plastic auxiliary machines. More information about our products pls link to our official website: www.weiruites.com .