How blenders are made
The blender began as a 1922 soda fountain gadget for mixing malted milkshakes.
- stations
- 5
- things upstream
- 68
- raw sources
- 23
- steps from the ground
- 8
The short version
Plastic housing parts and the jar are injection-molded, and the blades are stamped from stainless steel. A motor is built into the base, and the blade assembly is sealed through the bottom of the jar with a gasket. The jar locks onto the base with a twist.
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Mold the jar and base
Molten plastic is injected into steel molds to make the jar and the housing for the motor. Jars can also be glass or stainless steel.
Goes in -
Stamp the blades
Blade sets are cut and bent from stainless steel sheet, and the arms are angled so they churn food into a whirlpool.
Goes in -
Fit the motor
An electric motor is fitted in the base, along with the speed controls and a power cord.
Goes in -
Seal the blade assembly
The blade shaft goes through the jar floor with a gasket or O-ring, and a retainer holds it, so the contents cannot leak.
Goes in -
Test and pack
Each unit is run to check the motor and controls, then boxed with its jar and lid.
Worth repeating
- Stephen Poplawski patented his drink mixer in 1922 to make Horlicks malted milkshakes at soda fountains.
- Blades create a whirlpool that pulls solids from top to bottom, so low-powered blenders need some liquid to work.
- Plastic jars scratch and absorb the smell of food, while glass jars are heavier and more stable.
Back to the ground
Follow every input upstream and blender starts as these 23 raw sources.
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Sources
These sources say little about the factory steps themselves, so parts of this line are a general description. Treat the details with care, and tell us if you know better.
Cite this page: "How blenders are made." Assembly Line, 2026-11-03. https://assemblyline.org/make/blender