Plastic Injection Molding

Injection Molding critical components with highly engineered materials.

OUR SERVICESWhy Mack?

What is Plastic Injection Molding?

Mack Prototype’s plastic injection molding team specializes in the low-volume production of complex small- to medium-sized parts for medical, industrial, defense, and consumer markets. Typical volumes range from 100 to 50,000 parts per year, with molding machines setup to operate standard engineering materials like ABS, PC, as well as high-performance plastics like Carbon Fiber Filled, Glass Filled, Ultem™, PEEK, and PPSU (Radel™). If higher volumes or large-part molding is needed, Mack Molding can handle those requirements with hundreds of presses up to 4000 tons and services such as gas assist and structural foam molding.

Mack Prototype specializes in low volume production with short runs and high mix parts for medical, industrial, defense, and consumer markets. Typical volumes range from 100 to 50,000 parts per year. At Mack, injection molding presses can run standard engineering materials like ABS, PC, and high-performance plastics like Carbon Fiber Filled, Glass Filled, Ultem™, PEEK, and PPSU (Radel™).

With such a wide range of production runs and parts, Mack Prototype utilizes different tooling strategies. Tools can be rapid prototype tools, production tools, single, multi-cavity, stand-alone, modular unit die (more commonly known as MUD inserts), and aluminum or steel. Part requirements of tolerances, part size, material, timing and estimated volumes will drive the best tooling strategy for quality and efficiency.

With our secondary operations team, parts can be machined, inserted via heat stake or ultrasonic, finished, painted, or coated for EMI/RFI shielding.

With such a wide range of production runs and parts, Mack Prototype utilizes different tooling strategies. Tools can be rapid prototype tools, production tools, single, multi-cavity, stand-alone, modular unit die (more commonly known as MUD inserts), and aluminum or steel. Part requirements of tolerances, part size, material, timing and estimated volumes will drive the best tooling strategy for quality and efficiency.

With our secondary operations team, parts can be machined, inserted via heat stake or ultrasonic, finished, painted, or coated for EMI/RFI shielding.

Materials

  • Engineered plastics: ABS, PC/ABS, PP, PE, PC, acetal, delrin, nylon, glass-filled nylon, and more.
  • Performance plastics: Ultem, carbon fiber-filled Ultem, glass gilled Ultem, PEEK, PPSU, and more

Best Uses

  • Small to large-sized parts
  • Low-cost parts
  • Tight tolerance requirements
  • High heat material molding (PEEK, Ultem)
  • Validated process and part requirements
  • Medium and high volume production parts
  • Over-Molding

Benefits

  • Low part cost
  • Part consistency and repeatability
  • Part accuracy
  • Custom colors & textures
  • Diverse materials
  • Over-molding

Technical Information:

  • Part Shot Size: 27 to 851 grams
  • Press Sizes: 28 to 230 tons
  • Type: Arburg, Milacron and Van Dorn
  • Tool Material: Aluminum and Steel
  • Tools: Prototype and Production