Blown

Casting by extrusion-blown may be defined as the process used to obtain hollow bodies by using a gas (generally air) to expand a hose of melted plastic inside the mold.

This process consists of four stages:

• Fusion or plasticizing of the resin and melted transport (extruder);
• Formation of the mold (header and nozzle);
• Blown and molding of the parison; (mold)
• Cooling and removal of the mold.

<See Applications under this process: Foods, Household, Toys, Drugs ans Cosmetics
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