With over 23 years of expertise in precision mold making and plastic injection, Goldwin continues to lead the industry by adopting innovative solutions that enhance productivity and reduce costs. One such innovation is the use of stack molds, which have revolutionized high-volume manufacturing for industries such as packaging, medical, electronics, and consumer goods.

What Are Stack Molds?

A stack mold is a specialized injection mold system composed of multiple mold faces (levels) arranged in a stacked format. Instead of adding more cavities on a single face, stack molds split the mold into multiple parting lines—allowing two, three, or even four mold levels to operate simultaneously in a single cycle. This design effectively multiplies output without increasing machine size or footprint.

Key Benefits of Stack Mold Technology

  • Double or Quadruple Output: Produce more parts per cycle without needing a larger machine.
  • Space-Saving: Increase plant capacity without additional floor space.
  • Lower Capital Costs: Reduce machinery and handling system investment.
  • Flexible Compatibility: Available in 2, 3, and 4-level options for different machines.
  • Wide Application: Ideal for packaging, medical, closures, and consumer parts.

Multi-Cavity vs. Family Injection Molds in Stack Mold Design

Multi-Cavity Stack Molds

Multi-cavity molds produce identical parts across multiple cavities in each cycle. They are perfect for high-volume manufacturing, improving lead times and overall efficiency.

Family Stack Molds

Family molds manufacture different parts in the same cycle. They are efficient for prototyping and producing part sets, though they may require more handling and precise balance control.

Applications of Stack Molds

  • Medical & Labware
  • Thin-Wall Packaging
  • Custom & Beverage Closures
  • Electronics & Small Automotive Parts

Engineering Considerations

  • Hot runner systems for balanced flow
  • Precise ejection mechanisms for each level
  • Gear or toggle-based opening systems
  • Optimized injection pressure and clamping force
  • Advanced thermal control across all levels

Why Choose Goldwin?

With advanced CAD/CAM tools, skilled engineers, and decades of know-how, Goldwin delivers custom stack mold solutions built for productivity and precision. From concept to completion, we support your entire mold development cycle.

Start Your Stack Mold Project with Goldwin

Ready to double your output? Goldwin provides stack mold manufacturing services that maximize machine efficiency and lower per-unit costs. Reach out today to see how we can help scale your production.

📩 Contact us for a quote

RFQ

Index