Chemorheological modeling predicts thermoset gelation and squeeze flow, defining heating rates and platen pressures to hold sub-20 µm dielectric variations within ±1 µm.
Isothermal solvent evaporation determination defines paste stencil life, rheological stability, and defect limits by tracking flux carrier loss over time.
Secondary lamination dynamics dictate microvia fill, dielectric thinning, and registration shift, where multi-pass yield decay drives final panel cost.
High strain shear thinning reduces ultra fine paste viscosity during squeegee strokes, requiring rapid thixotropic yield recovery to prevent post print slump.
Dynamic prepreg viscosity and cure kinetics dictate resin flow windows, microvia filling completeness, and layer encapsulation during HDI board lamination.
Controlling lamination thermal ramps between 1.5 and 2.0 °C per minute minimizes resin stress and phase skew in sequential multilayer stackups.
Dynamic parallel plate rheometry under controlled 2 °C/min thermal ramps defines the minimum viscosity window for thin prepreg lamination success
Viscoelastic boundary slip and capillary pressure dictate microvia filling and trace stability during high-density circuit board lamination.
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