Industrial Gases Assist in Injection Molding: Nitrogen and Carbon Dioxide Fill any Shape

摘要

Injection molds can be used to make any conceivable shape in plastic, from a toothbrush to a thermos flask, from a glasses case to suitcase. Injection molding makes these products less expensive since one mold can be used to make several million pieces. They must be as like to one another as peas in a pod, and this can be quite a challenge, especially with more complex molds. The parts of an office chair must fit together like a screw cap on a jar. The solution to the problem is found in gases such as nitrogen and carbon dioxide, which are injected into the mold with the plastic, ensuring that every last cavity in the mold is filled.