Compression Force
The total load applied across the flat surface area of a press during the die-cutting or embossing processes determines the depth and clarity of the mechanical transformation. Correct platen pressure ensures that the tooling makes full contact with the substrate to achieve a clean cut or a sharp impression. This force must be distributed evenly to prevent some areas of the sheet from being under-processed while others are crushed.
Uniformity Requirement
Uneven force distribution often stems from slight misalignments in the press bed or variations in the thickness of the dies. Operators use make-ready techniques, such as adding thin layers of paper behind the die, to compensate for these discrepancies and achieve consistent platen pressure across the entire sheet. If the pressure is too high, the substrate may undergo permanent thickness reduction or suffer from cracking at the edges of the cut.
Insufficient force leads to incomplete die-cutting where the waste material remains attached to the finished piece.
Substrate Resilience
Different materials require specific force settings based on their density and compressibility. A dense, multi-ply board needs significantly higher platen pressure than a light, single-layer paper. The elastic recovery of the fibres after the pressure is removed also influences the final appearance of the embossed or die-cut detail.
