Who ranks for “injection molding machines”

An injection molding machine is a specialized industrial device used to manufacture identical plastic parts by melting resin pellets and injecting the liquid polymer into a closed mold under high pressure.

How It Works

The production cycle follows a precise, repeating sequence:

Feeding and Melting: Raw plastic pellets enter a material hopper and drop into a heated barrel where a rotating reciprocating screw melts and mixes the polymer. Clamping: The clamping unit firmly shuts and holds the two halves of the mold together using immense tonnage to prevent flashing or leakage. Injection: The screw pushes forward like a plunger, forcing the molten plastic through a nozzle and into the closed mold cavity. Cooling and Ejection: Holding pressure is maintained briefly to counter shrinkage; once the part cools and solidifies, the mold opens and an ejector system pushes the finished item out.

Watch this video to see a visual breakdown of the injection molding manufacturing process and how an injection molding machine works: 5:21 What is Injection Molding and How Does it Work? 376K views · 3 years ago YouTube · Protolabs

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Types of Machines

Hydraulic: Traditional machines driven by fluid power; excellent for high clamping forces and heavy-duty industrial work. All-Electric: Powered by servo motors for every axis, offering higher energy efficiency, precision, and cleanliness. Hybrid: Combines hydraulic and electric systems to balance speed, power, and energy savings. Desktop / Benchtop: Smaller units (like the APSX-PIM Plastic Injection Machine Go to product viewer dialog for this item. ) designed for prototyping, small businesses, and R&D labs, often compatible with aluminum or 3D-printed molds.

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Learn more about the mechanical differences between all-electric, basic hydraulic, and servo-hydraulic systems: 5m Different types of injection molding machines: all-electric, hydraulic & ... 15K views · 1 year ago YouTube · ENGEL

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Costs and Pricing

Desktop/Small Scale: Entry-level or desktop plastic injection machines range from about $2,200 (manual models like the Model 150A Go to product viewer dialog for this item. ) to $13,500+ for automated desktop units. Industrial Scale: Large commercial and factory-grade machines span a vast price range from roughly $15,000 to over $500,000, heavily dependent on tonnage, clamping capacity, and automation level.

If you want to narrow down your options, tell me:What kind of parts or products are you planning to make? What is your target production volume and budget ? Are you looking for a desktop unit or an industrial machine ?