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To improve the quality of injection molded products as well as increase design flexibility, plastics manufacturers frequently use nitrogen as a gas assist to their traditional injection molding process.

Consistent with conventional injection molding, the material is melted and injected into the mold. As the melted material begins to solidify, the area adjacent to the mold walls begins to harden first. Nitrogen gas is then injected into the molten material, pressurizing it from the inside out, and pushing the melted material to the extremities of the cavity. Then once the material is cured, the nitrogen is vented, the mold is opened, and the part is ejected.

Required nitrogen purity levels for this process typically range between 95% and 99.995%...well within the capabilities of the NITROSWING® technology.