INJECTION MOLDING
Flow of the melted material and let the material cool back to solid state in the mold tool.
Low-cost for high volume production
Quicker Time to Market
Lower materials and labor costs
Lower Capital Equipment Cost
Greater Automation Potential
Tips to design parts for molding:
Draft Angle
Uniform thickness
Symmetrical Shape
Avoid Overhang/ No Undercut
Draft angle:
Design parts with a minimum of ½ ̊ per side draft for allowing ejection from the mold.
Draft angle on walls, bosses, ribs, and other features, make parts easier to be removed from the mold.
Draft angle
No Draft Angle
Uniform thickness
Minimum wall thickness of an injection molded part ranges from 2mm to 4mm (.080 inch to .160 inch)
Uniform wall thickness in order to achieve uniform flow and less shrinkage .
Uniform Wall Thickness
Non-Uniform Wall Thickness
Avoid overhang/undercut
Overhang prevents the part from being ejected from the cavity.
Overhang makes parts hard to removed from the mold tools after cool off.
Overhang
No overhang