High Shear Squeeze Flow Analysis in Microvia Substrate Lamination
High shear squeeze flow during substrate lamination forces shear thinning in prepreg resin, enabling complete microvia cavity fill before gelation locks the network.
Characterizing Solder Paste Rheological Breakdown under Squeegee Forces
Excessive squeegee speed and downforce over-shear solder paste, reducing yield stress and causing severe deposit slump and bridging on fine-pitch components.
Evaluating Viscoelastic Yield Point Collapse Mechanisms under High Speed Squeegee Shear Forces
High-speed squeegee shear collapses solder paste yield stress, causing deposit slump and bridging unless viscoelastic recovery kinetics match line cycle speed.
Prepreg Melt Viscosity Dynamic Range during Thin Core Lamination Profiles
Matching prepreg melt viscosity minima to press pressure ramps prevents thin-core distortion and resin starvation in high-density multilayer lamination.
SMT Solder Paste Printing Parameters and Viscosity Evaluation Methods
Optimize solder paste print volume and yield by maintaining area ratios above 0.66, controlling squeegee force, and verifying viscosity stability.
Non-Newtonian Flow Dynamics in Thin Prepreg Dielectric Micro-Channels
Non-Newtonian resin flow inside thin prepreg micro-channels governs void formation, trace displacement, and dielectric thickness stability during high-pressure lamination.
Modeling Non-Newtonian Resin Flow and Microvoid Suppression Dynamics in Sub-30 Micrometer Core Multilayers
Sub-30 µm dielectric void suppression requires matching non-Newtonian dynamic viscosity to vacuum press ramps to maintain shear flow prior to cross-linking gelation.