What is Foam Extrusion?
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Foam extrusion is to use some precision equipment to control the special foam to extract a product with several variables that relate to each other. A final product was created by the ripple effect of these variables through this process. The foam extrusion becomes possible through the precision equipment to result in a ripple effect of these variables.

The process of creating foam extrusions has been around for many years. During World War II, Styrofoam logs were made using foam extrusion processes. These logs were used as floats for anti-submarine nets, as well as for rafts for the military troops.

The Dow Company marketed the first commercialized extruded foam, uncross-linked foam, in 1958. Two years later, the Japanese were able to extrude cross-linked foam with the use of chemical blowing agents. France also pioneered the extrusion of polyvinyl chloride (PVC), which involved cooling the surface to form a solid skin. This method is widely known as the Celuka process.

The Celuka process was discovered in 1989. Today, it remains one of the most popular methods for foam extrusions. It is commonly used for creating moldings, boards, and foam-core doors. Other products made from foam extrusions include backer rods, swimming pool noodles, and splines used to secure doors, windows, and patios.

Extruded polyethylene foam is one of the more popular foam extrusions because it is a self-contained material. It involves a complex molding process that requires the control of interrelated variables. Heat, pressure, additives, resins, and density are part of the foam extrusions process. All of the variables are capable of combining at the molecular level. Therefore, each must be controlled in order to create the product.

We commonly use melt pumps to improve foam extrusions. The melt pumps assisting in the process is mainly to stabilize the mass flow. Accurate control of melt temperature is usually required in the extruding process. The foam could be reshaped if the plastic temperature varies even only a few degrees. We must control all the variables properly to get a high quality foam product.

Our company is one of the most famous companies in China who produces these kinds of precision foam extrusion machines such as PE foam sheet extrusion line, PS foam sheet extrusion line, EPE foam sheet extruder, PS foam sheet extruder, chemically cross-linked PE foam sheet plant, XPS foam board equipment, etc. Every year, more than 90% of our products were exported to the world.