Cellulose felting shaping - uses fluid pressure applied over one side against shaping tool

摘要

To produce shaped components from flat cuttings (2) or preshaped sections of a cellulose or ligno-celllose random-laid felting, together with a bonding agent, the heated cutting (2) or preshaped section is pressed against a shaping tool (1) by fluid pressure acting on one side and over the whole surface area. This applies sealing and shape to the material. ADVANTAGE - The method gives shaped materials, in complicated profiles and structures, without additional jointing processes, using simple tools in an easy procedure. There is no relative movement between two tools as the pressure forces are applied directly by the fluid. The tool guides can be replaced by simple mechanical locks