Co-Injection Analysis Services

Co-Injection provides an invaluable tool for simulating the process where a skin material is injected first, followed by the injection of a different core material. Co-Injection is the ideal process for using recycled materials or achieving specialized cosmetic and structural objectives.

Results of a Co-Injection study can determine the following:

  • The pattern of two co-injected materials to aid in part design and gate placement
  • The extent of penetration of the core material in relation to the skin material
  • The injection pressure and clamp force requirements for molding machine selection
  • The best transition point for switching from skin-material to core-material injection
  • Optimal inlet melt temperatures for skin and core materials



coinjeciton2

coinjection3

Thickness fraction of polymer B
shows what percentage of the wall is
occupied by the second polymer for
co-injection. This plot shows the
penetration about halfway
through the filling process.
Thickness fraction of polymer B
shown at the end of injecting the
second polymer.



 

 

 

 

 

 




 

 

coinjection 1

Thickness fraction of polymer B
shown at the end of injecting the
first polymer for the second time.