What is the reason for the poor adhesion of the liquid silicone coated plastic?

What is the reason for poor adhesion in LSR overmolding?

Poor adhesion in LSR overmolding is typically caused by: 1) Inadequate surface preparation - substrate not properly cleaned or activated. 2) Material incompatibility - the plastic or metal substrate does not bond well with the LSR grade being used. 3) Incorrect process parameters - mold temperature too low or cure time insufficient. 4) Contamination - mold release residue or oils on the substrate surface. Solutions include plasma treatment, primer application, and selecting self-bonding LSR grades.