Co-Injection Analysis FAQ
Definition
Co-injection analysis is an ideal molding process for using recycled materials or achieving specialized cosmetic and structural objectives. It provides an invaluable tool for simulating the sequential co-injection process, where a skin material is injected first, followed by the injection of a different core material.
Advancement of the materials can be viewed in the cavity and the dynamic, changing relationship between skin and core materials can be seen as filling progresses. With Co-Injection results, the best combination of two materials can maximize the overall performance/cost ratio for the product.
What can a Co-Injection analysis determine?
- Evaluate the flow front pattern of two co-injected materials to aid in part design and gate placement
- Predict the extent of penetration of the core material and whether it will break through the skin material
- Determine injection pressure and clamp force requirements for proper molding machine selection
- Determine the best transition point for switching from skin-material injection to core-material injection
- Simulate different inlet melt temperatures for skin and core materials
What type of molding problems can a Co-Injection analysis solve?
- Excessive costs of raw material on thick parts
- Improving surface or structural issues by using different skin or core materials
What information do you provide with a Co-Injection analysis?
- All standard filling analysis outputs
- Percentage of skin/core material
- Timing of injection of skin and core materials
