Statistical density analysis of squeegee blade, and pressure on textile screen printing

This study investigates the impact of squeegee blade (natural rubber and polyurethane) and squeegee pressure on printing density in traditional textile screen printing. The research employed a 2 × 2 factorial design with two pressure levels (high and low) for each squeegee blade. Strain gauges and pressure sensors were installed to measure variations in printing density during the screen printing process. Results from statistical t-tests and two-way analysis of variance (ANOVA) reveal that the key factor affecting printing density is the squeegee blade, followed by squeegee pressure and the interaction between blade and pressure, under statistical significance (95% confidence level). Furthermore, the impact of blade on printing density varies depending on the pressure, with natural rubber squeegee blade achieving higher density values compared to polyurethane squeegee blade under both high- and low-pressure conditions. Under the same conditions, natural rubber squeegee blade exhibit smoother fluctuation in printing density, lower variation, higher tensile strength, and better printability than polyurethane squeegee blade. These findings provide empirical evidence for selecting appropriate squeegee blade and pressure settings in textile screen printing applications, potentially improving print quality and consistency across various printing scenarios.