Installation and method for producing a single- or multi-layer nonwoven

An installation for selectively producing either a single-ply or a multi-ply nonwoven, comprising:

• an inclined wire former configured to deposit a sheet of wet-laid fibre material on a first circulating belt for transporting the sheet of wet-laid fibre material in a material transport direction, wherein the sheet of wet-laid fibre material is one of a single and multi-layer wet-laid fibre material;
• at least one further belt configured to receive the sheet of wet-laid fibre material from the first circulating belt and to transport the sheet of wet-laid fibre material in the material transport direction;
• a roller card arranged downstream in the material transport direction and configured to introduce a roller card web into the installation, wherein the at least one further belt is located at least in part beneath the roller card,
• a hydroentangler arranged downstream in the material transport direction and having at least one water beam configured to at least one of entangle, bond and structure a single sheet of fibres or a plurality of sheets of fibres;
• and a dryer arranged downstream in the material transport direction from the hydroentangler,
• wherein either one or both of the sheet of wet-laid fibre and the roller card web comprise single-ply nonwoven and the installation is configured to enable selective transport by the at least one further belt to the hydroentangler of one of the sheet of wet-laid fibre material, the roller card web, and the sheet of wet-laid fibre material together with the roller card web.