Gas Assistant Mold
Gas assistant mold Capability Gas assistant mould Gas assistant plastic mold Gas assistant plastic tool Gas assistant injection mould Gas assistant injection tool Gas assist injection molding is a low pressure process that requires the injection of pressurized nitrogen gas into the interior of a...
Gas assistant mold
Gas assistant mould
Gas assistant plastic mold
Gas assistant plastic tool
Gas assistant injection mould
Gas assistant injection tool
Gas assist injection molding is a low pressure process that requires the injection of pressurized nitrogen gas into the interior of a mold. The gas flows through strategically placed gas channels to displace the material in the thick areas of the part by forming hollow sections
Less Material. Less Weight. Less Cost. Improved Quality!
In the gas assist molding process, the plastic material is melted and injected into the mold cavities via the conventional plastic injection molding process. Plastic material in contact with the mold walls begins to solidify first. As this happens, nitrogen gas is injected into the mold through strategically designed and placed gas channels, providing pressure that pushes the plastic material into the mold extremities. Once the plastic cures, the nitrogen is vented and the gas assist injection molded plastic parts are removed from the mold. Gas assist injection molding process animation.
Less plastic material needed (material savings)
Reduced part weight (in some cases up to 40%)
Decreased cycle time
Increased part strength and rigidity
Reduced warpage and distortion
Improved part appearance (eliminates sink marks and surface blemishes)
Reinforces ribbed parts
Increased design options for complex parts, reducing multiple part assemblies, and metal to plastic conversions
Enables use of smaller plastic injection molding presses
In gas assist plastic injection molding, the pressurized gas follows the path of least resistance and displaces the plastic material in the thicker areas of the part, leaving hollow sections for reduced material use and part weight, yet not compromising part appearance or functional.
With gas assist molding, localized gas pressure within the mold results in better packing of the plastic which reduces warpage, shrinking, surface blemishes, sink marks and internal stress. Gas assist injection molded plastics generally make for stronger and more aesthetically pleasing parts.
Gas assist molding is used to reinforce ribbed parts and provides more design freedom for complex parts, reducing multiple part assemblies and metal to plastic conversions.
The need for less plastic material and the consistent pressurization within the mold also enable gas assist injection molded plastics to cool faster, reducing cycle times and increasing plastic injection molding machine output – saving time and cost!
In gas assist plastic injection molding, the internal pressure provided by the nitrogen gas enables lowering the outer force needed to hold part shape, so large plastic parts can be produced with less tonnage on smaller plastic injection molding machines.
Some applications benefiting from gas assist plastic injection molding include:
Medical equipment housings
Interior and exterior automotive handles
Large covers and panels for office equipment
Lawn mower handles
Basketball backboard frames
Long tubular shapes, such as shovel handles
Large parts with ribs and bosses