纸机成形部全面指南：涵盖成形网选型、脱水优化、纸张成形与纤维保留。适用于长网、夹网和混合成形器。
How to choose the right forming fabric based on paper grade, machine speed, and drainage requirements. Single layer vs double layer vs triple layer comparison.
Maximizing drainage capacity while maintaining sheet quality. Understanding vacuum profiles, foil angles, and fabric design impact on drainage.
Achieving uniform sheet formation across the full machine width. CD profile control, fiber orientation, and formation measurement techniques.
Reducing fiber and filler loss in the forming section. Fabric design impact on first-pass retention and overall retention.
Common forming section problems: wire marking, pinholes, poor formation, edge drop-off. Root causes and corrective actions.