Process Comparison

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Property Name   Blow Molding
ShapesThin-walled: Cylindrical, Thin-walled: Cubic, Thin-walled: Complex 
Part sizeEnvelope: Up to 105 ft³ 
Surface finish - Ra (μin)250 - 500 
Tolerance (in.)± 0.04
(± 0.01)
Max wall thickness0.015 - 0.125
(0.01 - 0.24)
Quantity100000 - 1000000
(1000 - 1000000)
Lead timeDays 
AdvantagesCan form complex shapes with uniform wall thickness, High production rate, Low labor cost, Little scrap generated 
DisadvantagesLimited to hollow, thin walled parts with low degree of asymmetry, Poor control of wall thickness, Poor surface finish, Few material options, High tooling and equipment cost 
ApplicationsBottles, containers, ducting 
Typical values shown first (Feasible values in parentheses)

Disclaimer: All process specifications reflect the approximate range of a process's capabilities and should be viewed only as a guide. Actual capabilities are dependent upon the manufacturer, equipment, material, and part requirements.