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US 6,783,714 B1Granted
Method and plant for the production of paper sheets having substantially stiff structure
OwnerGiuseppe Locatiinventor
Life of this patent
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Abstract
A method and a production plant for production of sheets with substantially stiff structure of paper material comprise the steps of paper grinding to obtain paper flakes, spreading the flakes to obtain a carpet of flakes, sprinkling the carpet with gluing liquid, accomplishing a first compacting of the flakes and accomplishing a second compacting of the carpet during which is executed a simultaneous forming to obtain a sheet with a plurality of stiffening dishes.
Claims9
Method for the continuous production of sheets with substantially stiff structure of paper material comprising the steps of:
- paper grinding to obtain paper flakes,
- spreading the flakes to obtain a carpet of flakes,
- sprinkling the carpet with gluing liquid,
- accomplishing a first carpet compression to produce a first compacting of the flakes while holding a virtually flat carpet configuration,
- accomplishing a second carpet compression to produce another compacting of the flakes, and
- performing during this second compression a simultaneous forming to obtain a continuous production of a sheet with a plurality of stiffening dishes having an elongated form and arranged in at least two different directions on the sheet expanse.
3 more elements
Dependencies are inferred from the claim text.