Force Application
Controlled downward thrust moves the printing medium through a screen mesh and onto the surface of a textile substrate. This squeegee pressure determines the volume of ink or paste deposited and the depth of its penetration into the yarn.
Adjustment Mechanism
Operators use pneumatic or mechanical controls to set the level of force applied across the length of the blade. If the value is too low, the ink will not clear the screen properly, leading to incomplete patterns. Conversely, excessive force can distort the mesh and cause the printed image to grow beyond its intended dimensions.
Substrate Interaction
Heavier fabrics with open weaves require more force to verify the dye reaches the interior of the construction. Lightweight silks or knits need a lighter touch to avoid crushing the delicate fibres or causing the ink to bleed through to the back. Finding the correct setting involves balancing the speed of the stroke with the resistance of the fabric.
The durometer or hardness of the rubber blade also interacts with the applied force to determine the actual contact area on the screen.
Consistency Monitoring
Variations in the flatness of the printing table can lead to uneven application across the width of the fabric. Modern machines use load cells to provide real-time feedback and maintain a constant squeegee pressure during the entire run. This precision is required to prevent shade variation and maintain the sharp definition of the design.
