Stack molding is an advanced injection molding technique that utilizes multiple mold faces stacked horizontally or vertically to increase production rates without increasing machine tonnage. This method is ideal for high-volume, complex part production, as it doubles or triples output while reducing costs and floor space requirements. The process includes simultaneous material injection, integrated cooling, and an efficient ejector system for quick cycle times.

1. What is Stack Molding in
Injection Molding
• Understanding the Process and Benefits

2. What is Stack Molding?
• Stack molding is an advanced injection molding technique.
• Multiple mold faces (layers) stacked horizontally or vertically.
• Doubles or triples production without increasing machine tonnage.
• Ideal for high-volume, complex part production.

3. Structure and Key Components
• Multiple cavities on different faces or levels.
• Key Components:
⚬ Mold Cavities (on different levels/faces)
⚬ Central Injection Point (distributes molten material to each face)
⚬ Ejector System (removes solidified parts)

4. How Stack Molding Works
1.Material Injection – Molten plastic is injected into all cavities simultaneously.
2.Cooling Phase – Integrated cooling ensures proper solidification.
3.Ejection – The ejector system removes parts after cooling, starting the next cycle.

5. • Increased Productivity: Doubles/triples output per cycle.
• Cost Efficiency: Reduces production costs per part.
• Efficient Use of Floor Space: No need for additional machines.
• Lower Tonnage Requirements: High output with smaller machines.
• Reduced Cycle Time: Shortens overall production time.
Advantages of Stack Molding

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