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US 10,196,775 B2Granted
Method for processing grass for manufacturing paper, paperboard and cardboard
OwnerUwe D'Agnoneinventor
Life of this patent
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Abstract
The present invention relates to a method for processing grass or hay as paper pulp having the steps of pre-reducing the grass or hay with a bale breaker and/or a shredder to an average fiber length between 500 mm and 10 mm, preferably between 120 mm and 10 mm, removing impurities and foreign or extraneous substances by means of a cyclone; reducing and fibrillating the grass or hay in a fiber mill, fraying the grass or hay; and screening and/or sifting the grass or hay by means of a circulating-air separator and/or a cyclone screener.
Claims19
A method for processing grass or hay having the steps comprising:
- a) Pre-reducing the grass or hay with a bale breaker and/or a shredder to an average fiber length between 500 mm and 10 mm;
- b) Removing impurities and foreign or extraneous substances by a cyclone;
- c) Reducing and fibrillating the grass or hay in a fiber mill;
- d) After milling, pulling apart and/or isolating fibers of the grass or hay with shape rollers;
- and
- e) Screening and/or sifting the grass or hay by a circulating-air separator and/or a cyclone screener.
3 more elements
Dependencies are inferred from the claim text.