Injecting gas to form a micro-thin layer of
gas between one surface of the plastic and the
adjacent mould cavity surface.
Using the gas to apply pressure to the plastic
whilst cooling, forcing it against the opposite
mould cavity surface to improve replication of
that surface.
EGM BENEFITS
Can eliminate sink marks.
Virtually eliminates moulded-in stress and
therefore distortion.
Improves dimensional stability.
Can reduce material usage – eliminates
injection packing
Applies pressure more efficiently, and therefore
less pressure is required:
- reducing required clamp tonnage or machine
size.
- reducing wear on moulds.
- reducing power consumption.
More design freedom:
- thicker ribs with reduced wall thicknesses.
- multi-rib components.
- flat PP and PE products.
EGM APPLICATIONS
Flat panels for office equipment.
Computer enclosures.
Furniture, i.e. tabletops.
Automotive panels.
Domestic appliances - e.g. refrigerator tops
The visible benefits of external gas molding. A. Without external gas moulding.
B. With external gas moulding.
