When it comes to blow molding, many use quartz infrared heat lamps to warm the thermoplastic that is used in the process.
What is Blow Molding?
Blow molding refers to the manufacturing process by which hollow plastic parts are formed out of thermoplastic (often PolyEthylene Terephthalate, or PET). This process uses a closed mold and a hollow preform or parison that is heated inside of the mold (using heat lamps) to conform to its shape.
Blow molding is one of the largest plastic processing techniques in manufacturing and its parts can be created economically in unlimited quantities with little to no finishing operations.
The Blow Molding Process
In order to create the hollow plastic parts, the PET preforms are held on either rails or a jig and are moved through a tunnel of infrared heat lamps. As the preforms go through the tunnel, the heat lamps heat them evenly, however, the necks of the preforms are chilled by a water circulation so that they keep their shape. After they exit the tunnel, the preforms are moved to a blowing station and are blown to form the hollow shape of their molds.
Infrared Heat Lamps
At Aamsco, we carry quartz infrared heat lamps in a variety of sizes, wattages, and finishes (like clear, gold, frosted, and more) to meet your molding needs. With infrared heat lamps, you can reduce your energy costs by up to 45%. Click here for more information.