Why Cooling System Design Is Critical
Cooling accounts for 60–80% of the injection molding cycle time.

A poor cooling system causes:

Warpage
Sink marks
Long cycle times
Inconsistent quality
A well-designed system can:

Reduce cycle time
Improve dimensional stability
Lower production cost
Types of Cooling Systems
Cooling Type Advantages Disadvantages Best Use
Straight Channels Simple, low cost Limited efficiency Basic molds
Baffle Cooling Better heat transfer More complex Deep cores
Bubblers Effective internal cooling Maintenance needed Core cooling
Conformal Cooling Best performance High cost Complex parts
Cooling Design Guidelines
1. Uniform Cooling
Ensure even temperature distribution.

Prevents:

Warpage
Internal stress
2. Cooling Channel Placement
Close to cavity surface
Maintain safe distance
3. Optimize Channel Diameter
Too small → poor flow
Too large → inefficient heat transfer
4. Use Advanced Cooling When Needed
Conformal cooling for:

Complex geometry
High precision parts
Common Cooling Problems (And Solutions)
Warpage
Cause:

Uneven cooling
Fix:

Improve channel layout
Long Cycle Time
Cause:

Inefficient cooling
Fix:

Optimize channel design
Use better cooling methods
Hot Spots
Cause:

Poor heat dissipation
Fix:

Add baffles or bubblers
Real Case: Cycle Time Reduced by 22%
A client producing ABS housings faced long cycle times.

Problem:

Inefficient cooling layout
Solution:

Redesigned cooling channels
Improved heat distribution
Result:

Cycle time reduced by 22%
Increased production capacity
DFM Tips from Our Engineering Team
We focus on:

Cooling uniformity
Channel layout optimization
Thermal simulation
Cycle time reduction
Cooling optimization is one of the fastest ways to increase profit.

Frequently Asked Questions
Why is cooling so important?
Because it dominates cycle time and affects part quality.

What is conformal cooling?
A cooling system that follows the shape of the part for better efficiency.

How can I reduce cycle time?
Improve cooling design
Optimize mold temperature
Use better materials
Get Expert Cooling Design Support
Want to reduce your cycle time?

Send us your:

CAD file
Production requirements
We provide:

Free cooling analysis
Cycle time optimization
DFM recommendations
Contact us today to improve efficiency.