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Gas-assisted injection molding

The gas-assisted injection molding system directly injects inert gas (usually nitrogen) into the melt plastic in the mold cavity through the sectional pressure control system, which makes the plastic part expand and cause hollowness, but still keeps the shape of…

why bubbles in injection molding

Bubbles in injection molding are gas- or vapor-filled voids trapped inside or just beneath the surface of a molded part. They are caused by moisture in the resin, air entrapment during filling, resin degradation from overheating, insufficient venting, or under-packing.…