1.HPL material system

  1. active
  3. active
  8. active

1.2.5Composition and sheet structure

The impregnated papers are recalled from storage and assembled accordingly in clean, dust-free rooms. The HPL structure is determined by the desired colour, size, thickness and reverse side structure.

Typical structure of HPL
Figure 3: Typical structure of HPL

1 Kraft paper layers | 2 Decorative paper | 3 Overlay

Typical structure of HPL-Compact
Figure 4: Typical structure of HPL-Compact

1 Kraft paper layers | 2 Decorative paper | 3 Overlay

Typical structure of HPL-Compact without overlay
Figure 5: Typical structure of HPL-Compact without overlay

1 Kraft paper layers | 2 Decorative paper

HPL with decorative material on one side is always manufactured “back to back” using separating papers. These separating papers (usually coated special papers) or films are used to prevent the HPL from sticking together in the press. The visual sides of the semi-finished HPL are placed against a pressure plate which provides the desired surface texture. For multi-opening presses, the process is repeated several times until the press is filled. Presses with up to 45 openings are often used today. Each opening is filled with material for up to 24 single-sided HPL sheets (0.5 – 1.9 mm thick) or at least one HPL-Compact sheet (2 - approx. 42 mm thick).

Cookie Extension Logo