Weave Architecture
Extremely thin E-glass woven material designated as 106 glass fabric provides the structural reinforcement base for high frequency printed circuit boards. Resin impregnation performance depends directly on yarn count and filament diameter within this specific style. Symmetrical yarn distribution across warp and fill directions prevents uneven resin pooling during lamination.
Manufacturers build multilayer cores using this ultrathin substrate to maintain strict thickness tolerances in telecommunication backplanes. Aperture size dictates how effectively molten epoxy wets the inner matrix without leaving dry spots or voids.
Dielectric Uniformity
Glass content percentage within 106 glass fabric dictates the baseline electrical permittivity of the cured dielectric layer. Signal propagation velocity relies on maintaining a constant resin to glass ratio throughout the pressed board. Low dielectric constant variation across the panel prevents impedance mismatches in high speed differential pairs.
Automated optical inspection systems scan the raw material rolls for broken filaments and foreign debris prior to pressing. Excessive resin richness shifts the capacitance upward and degrades insertion loss metrics at microwave frequencies.
Lamination Control
Press cycle pressures flatten the woven bundles of 106 glass fabric to eliminate internal air pockets that cause delamination during thermal stress testing. Interlayer adhesion strength scales with proper surface treatment applied to the E-glass fibers during initial sizing removal. Thermal expansion coefficients in the z axis remain controlled only when the glass matrix restrains resin movement uniformly.
Vacuum assisted lamination draws out trapped volatiles that otherwise expand and fracture the fragile yarn intersections during solder reflow cycles.
