How to Use an Extruder for Injection Molding

You can use an extruder to create objects out of thermoplastic.

Those proficient in the art of injection molding know how to design hollow objects out of thermoplastic. This occurs when you bring hot plastic tubes together that contain an opening in one end along with the insertion of air on the opposite end to modify the tube's shape. When you know how to use an extruder, you can create plastic in any shape you choose.

Things You'll Need

• Extruder
• Steel mode
• Core rod

Instructions

1. Use your extruder to inject the thermoplastic that you want to melt in a cavity of steel. This type of steel mode, known as a parison, creates something that looks like a test tube.

2. Transfer the item you just created with a core rod to the subsequent part of the process.

3. Take your container, while it remains on the core rod, and move it to a location that you choose. Eject it from your mold.

Tips & Warnings

• Note that this type of creation works well when you want to design items such as tiny containers, since these items measure their weight in terms of grams.

References

• Pet Machine: Extrusion Blow Moulding