Apparatus for producing sideways curved woodwool fibres

An apparatus for producing sideways curved woodwool fibres, comprising:

• a flat rotatable disc;
• at least one knife assembly provided in a surface of the disc and having:
• a thickness knife which projects slightly above the surface of the disc, with the knife assembly having a cutting edge extending substantially radially;
• and
• width knives positioned, as seen in the direction of rotation of the disc, ahead of said thickness knife and having a cutting edge extending substantially tangentially relative to the disc, wherein the width knives are positioned substantially adjacent to the thickness knife;
• a run-on guide having a plurality of run-up ribs spaced apart in the radial direction of the disc and extending tangentially and positioned, as seen in the direction of rotation of said disc, ahead of said width knives for positioning a wood block to be cut up into fibres;
• and
• at least one feeding device for feeding the disc with wood blocks relative to the width knives to be cut up into fibres.

An apparatus for producing sideways curved woodwool fibres, comprising:

• a flat rotatable disc;
• at least one knife assembly provided in a surface of the disc and having:
• a thickness knife which projects slightly above the surface of the disc, with the knife assembly having a cutting edge extending substantially radially;
• and
• width knives positioned, as seen in the direction of rotation of the disc, ahead of said thickness knife and having a cutting edge extending substantially tangentially relative to the disc, wherein the width knives are positioned substantially adjacent to the thickness knife;
• a run-on guide positioned, as seen in the direction of rotation of said disc, ahead of said width knives for positioning a wood block to be cut up into fibres, wherein the run-up guide forms part of the width knives;
• and
• at least one feeding device for feeding the disc with wood blocks relative to the width knives to be cut up into fibres.