-
公开(公告)号：US11105045B2
公开(公告)日：2021-08-31
申请号：US16337130
申请日：2017-09-27
Applicant: Stora Enso OYJ
Inventor： Riku Pihko , Vesa Kunnari
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.
-
公开(公告)号：US20240226947A9
公开(公告)日：2024-07-11
申请号：US18547374
申请日：2022-02-23
Applicant: Stora Enso OYJ
Inventor： Otto Nylèn , Riku Pihko , Vesa Kunnari , Marko Kraft
CPC classification number: B05C3/18 , B05C1/0826 , B05C1/0865 , B05C9/10 , D21H5/0015
Abstract: A device (4) for applying a viscous liquid, in particular an MFC dispersion, onto a moving substrate (52) comprises an inlet (72, 73a-73f) for the viscous liquid, a casting chamber (61a, 61b), a lower portion of which being open to the substrate (52), and a metering portion (69, 661), for limiting a thickness of a wet film that is formed on the substrate downstream of the device. The device further comprises a shear section (42) arranged inside the casting chamber (61a, 61b). The shear section (42) comprises a fluidization rod (68), arranged in the casting chamber (61a, 61b), for providing shearing of the viscous liquid inside the casting chamber (61a, 61b).
-
3.发明申请公开(公告)号：US20230003509A1
公开(公告)日：2023-01-05
申请号：US17757253
申请日：2020-12-18
Applicant: Stora Enso OYJ
Inventor： Ari Jäsberg , Riku Pihko , Otto Nylén
Abstract: The present document discloses a method of determining thickness of a wet film, in particular of microfibrillated cellulose. The method comprises conveying said film (20) in a wet state on a conveyor (10) having a conveyor width, the wet film having a film width which is less than the conveyor width, providing a laser projection (1511) across a film edge, acquiring a series of images, each depicting an area of the conveyor, wherein the laser projection, a portion of the film and a portion of an exposed conveyor surface are visible, and using at least some of said images to determine at least one of a film thickness and a film thickness distribution across the film width. The document also discloses a method of forming a film, in particular a microfibrillated cellulose film, and a device for producing such film.
-
Patent Agency Ranking
4.发明公开公开(公告)号：US20230193559A1
公开(公告)日：2023-06-22
申请号：US17907028
申请日：2021-03-22
Applicant: Stora Enso OYJ
Inventor： Otto Nylén , Isto Heiskanen , Joanna Rahko , Riku Pihko
CPC classification number: D21H11/18 , D21F3/0236 , D21H17/06 , D21H25/06 , B82Y30/00
Abstract: The present invention relates to a method for producing a film comprising nanocellulose, which method comprises: providing a suspension comprising 50-100 weight-% of nanocellulose based on total dry weight; forming a fibrous web of said suspension on a non-porous support; providing a press fabric comprising a web-side first surface and an opposite second surface, wherein said press fabric comprises a woven first fabric layer arranged in the press fabric as a layer providing said web-side first surface such that said press fabric has a woven surface structure at said web-side first surface; applying said web-side surface of said press fabric into direct contact with said web; wet-pressing said web by conducting said web, arranged between said press fabric and said non-porous support, through a pressing equipment, and drying the dewatered web so as to form said film. The invention further relates to a film produced from said method.
-
公开(公告)号：US20210324580A1
公开(公告)日：2021-10-21
申请号：US17292191
申请日：2019-11-08
Applicant: Stora Enso OYJ
Inventor： Isto Heiskanen , Jukka Kankkunen , Riku Pihko , Vesa Kunnari
Abstract: The present invention relates to a method for dewatering a web comprising microfibrillated cellulose, wherein the method comprises the steps of: providing a suspension comprising between 50 weight-% to 100 weight-% of microfibrillated cellulose based on total dry weight, forming a fibrous web of said suspension on a support wherein said web has a dry content of 1-25% by weight, applying a dewatering felt into direct contact with the fibrous web, conducting said fibrous web, arranged between said dewatering felt and said substrate, through a pressing equipment. The invention further relates to a film produced from said method.
-
6.发明申请公开(公告)号：US20190226146A1
公开(公告)日：2019-07-25
申请号：US16337130
申请日：2017-09-27
Applicant: Stora Enso OYJ
Inventor： Riku Pihko , Vesa Kunnari
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.
-
公开(公告)号：US11619004B2
公开(公告)日：2023-04-04
申请号：US17292191
申请日：2019-11-08
Applicant: Stora Enso OYJ
Inventor： Isto Heiskanen , Jukka Kankkunen , Riku Pihko , Vesa Kunnari
Abstract: The present invention relates to a method for dewatering a web comprising microfibrillated cellulose, wherein the method comprises the steps of: providing a suspension comprising between 50 weight-% to 100 weight-% of microfibrillated cellulose based on total dry weight, forming a fibrous web of said suspension on a support wherein said web has a dry content of 1-25% by weight, applying a dewatering felt into direct contact with the fibrous web, conducting said fibrous web, arranged between said dewatering felt and said substrate, through a pressing equipment. The invention further relates to a film produced from said method.
-
公开(公告)号：US20240131549A1
公开(公告)日：2024-04-25
申请号：US18547374
申请日：2022-02-23
Applicant: Stora Enso OYJ
Inventor： Otto Nylèn , Riku Pihko , Vesa Kunnari , Marko Kraft
CPC classification number: B05C3/18 , B05C1/0826 , B05C1/0865 , B05C9/10 , D21H5/0015
Abstract: A device (4) for applying a viscous liquid, in particular an MFC dispersion, onto a moving substrate (52) comprises an inlet (72, 73a-73f) for the viscous liquid, a casting chamber (61a, 61b), a lower portion of which being open to the substrate (52), and a metering portion (69, 661), for limiting a thickness of a wet film that is formed on the substrate downstream of the device. The device further comprises a shear section (42) arranged inside the casting chamber (61a, 61b). The shear section (42) comprises a fluidization rod (68), arranged in the casting chamber (61a, 61b), for providing shearing of the viscous liquid inside the casting chamber (61a, 61b).
-
-
-
-
-
-
-
Search Results
8
records
(took 0.027 seconds)
