Lesson 8 |  Drop Boxes

 

Are primarily used to mold multiple layers of material to provide insulation, strength, multiple colors, foaming, and/or differing internal/external part requirements.

The drop box usually mounts on the outside of the mold and holds a second charge of material. After the first charge inside the mold cavity has formed, an air actuated cylinder inside the drop box releases the second charge into the mold.

 

A second drop box can be added to produce products with 3 layers of material such as PE skin - foam - PE skin.

 

 

 

 

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