Method for the production of a film comprising microfibrillated cellulose, a film and a paper or paperboard product
AssigneeStora Enso OYJ
InventorsRiku Pihko, Vesa Kunnari
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Abstract
The present invention relates to a method for the production of a film comprising microfibrillated cellulose, wherein the method comprises the steps of; providing a suspension comprising between 70 weight-% to 100 weight-% of microfibrillated cellulose based on total dry weight, forming a fibrous web of said suspension, drying the web in a drying equipment wherein the web is at least partly dried at a drying rate above 75 kg(H2O)/m2/h by use of hot air whereby a film is formed. The invention also relates to a film produce according to the method and a paper or paperboard substrate comprising said film.
Claims15
A method for the production of a film comprising microfibrillated cellulose, wherein the method comprises the steps of:
- providing a suspension comprising between 70 weight-% to 100 weight-% of microfibrillated cellulose based on total dry weight,
- forming a fibrous web of said suspension,
- drying the web in a drying equipment wherein the web is at least partly dried at a drying rate above 75 kg(H2O)/m2/h by use of hot air whereby a film is formed.
Dependencies are inferred from the claim text.