Patents by Inventor Risto Vesanto
Risto Vesanto has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9248622Abstract: The invention relates to a method for sealing a fiber-based material (1, 4) to a counter-surface to be bonded to it by melting polymer present at the sealing point. In accordance with the invention, the sealing is performed by directing a laser beam (8) through the fiber layer (4) of the material to a radiation-absorbing pigment disposed in the sealing area (9), with the absorption heat melting the polymer (5) and generating the sealing. The method allows sealing of plastic-coated paper or board to itself, to another plastic counter-surface or also to paper or board without any plastic coating. It is also possible to seal uncoated paper or board to paper or board containing plastic, such as plastic-coated paper or board, or to a plastic film. The absorptive pigment, e.g.Type: GrantFiled: February 24, 2005Date of Patent: February 2, 2016Assignee: STORA ENSO OYJInventors: Päivi Määttä, Petri Laakso, Jari Hovikorpi, Risto Vesanto
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Patent number: 8414723Abstract: The invention relates to a method for protecting the untrimmed edge of paperboard or paper (1), in which method the untrimmed edge (4) of two adjacent paperboards or papers are protected and attached abuttingly together by sealing a separate profile (3) on both sides of the abutment of the edges (4) by means of ultrasound.Type: GrantFiled: May 14, 2007Date of Patent: April 9, 2013Assignee: Stora Enso OyjInventors: Päivi Määttä, Risto Vesanto, Tapani Penttinen, Heli Vesanto, Pentti Järvelä, Marjo Elorae, Tapio Hietaranta, Martti Turunen, Ritva Turunen
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Patent number: 8201904Abstract: The invention relates to a method of providing board containers (V) with prints and a printing machine that applies the method. According to the invention, the printing machine comprises a turret head (2), with uniformly spaced radial arms (3) diverging from its rotational axis, each arm ending in a mandrel (4) that carries a container (1); and stationary stations (5, 6, 8) that are located on the path of the turret head for gripping a container, printing it by a printhead (7, 13), and removing the printed container (V). At the printing station (6), the container (1) is digital-printed by the printhead (7), past which the surface of the container is conveyed by means of a rotational motion. The container can be a conical drinking cup (1), which is ink-jet printed by the stationary printhead (7) by rotating the cup by 360° by means of the mandrel (4) that is pushed inside the cup.Type: GrantFiled: March 27, 2008Date of Patent: June 19, 2012Assignee: Stora Enso OYJInventors: Risto Vesanto, Kaj Backfolk, Ville Laalo, Bo Sundqvist, Noora Nylander, Panu Tanninen, Mika Aunola
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Patent number: 8186406Abstract: The invention relates to a method and an apparatus for jointing members made of plastic-coated paper or board. In accordance with the invention, the sealable members are retained in position with clamps and sealing is performed with a laser sealing means moving along the sealing line, a means for opening the seal point pressing the members apart to continue keeping the seal point open, a laser beam being directed to the open seal point for melting the coating plastic and a means for closing the seal pressing finally the members against each other, the plastic jointing the members when solidified. The method is applicable to lateral sealing of bag or container packages formed of blanks, among other things.Type: GrantFiled: January 12, 2005Date of Patent: May 29, 2012Assignee: Stora Enso OyjInventors: Päivi Määttä, Pëtri Laakso, Jari Hovikorpi, Raimo Penttilä, Nina Miikki, Risto Vesanto
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Patent number: 8011568Abstract: A board tray, a method for manufacturing a board tray and a tray blank from which the board tray is manufactured, said board tray containing side walls and a bottom wall made of a board layer provided on at least one surface thereof with a plastic coating, wherein areas of reduced thickness are formed in the board layer whereby portions of the plastic layer which have been melted and are disposed adjacent to areas of reduced thickness are compressed into such areas forming double-folded linear plastic compressions which seal on themselves.Type: GrantFiled: September 28, 2006Date of Patent: September 6, 2011Assignee: Stora Enso OyjInventors: Paivi Maeaettae, Risto Vesanto, Panu Tanninen, Petri Laakso, Jari Hovikorpi
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Publication number: 20100091054Abstract: The invention relates to a method of providing board containers (V) with prints and a printing machine that applies the method. According to the invention, the printing machine comprises a turret head (2), with uniformly spaced radial arms (3) diverging from its rotational axis, each arm ending in a mandrel (4) that carries a container (1); and stationary stations (5, 6, 8) that are located on the path of the turret head for gripping a container, printing it by a printhead (7, 13), and removing the printed container (V). At the printing station (6), the container (1) is digital-printed by the printhead (7), past which the surface of the container is conveyed by means of a rotational motion. The container can be a conical drinking cup (1), which is ink-jet printed by the stationary printhead (7) by rotating the cup by 360° by means of the mandrel (4) that is pushed inside the cup.Type: ApplicationFiled: March 27, 2008Publication date: April 15, 2010Applicant: STORA ENSO OYJInventors: Risto Vesanto, Kaj Backfolk, Ville Laalo, Bo Sundqvist, Noora Nylander, Panu Tanninen, Mika Aunola
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Publication number: 20090298662Abstract: The invention relates to a method for protecting the untrimmed edge of paperboard or paper (1), in which method the untrimmed edge (4) of two adjacent paperboards or papers are protected and attached abuttingly together by sealing a separate profile (3) on both sides of the abutment of the edges (4) by means of ultrasound.Type: ApplicationFiled: May 14, 2007Publication date: December 3, 2009Inventors: Päivi Määttä, Risto Vesanto, Tapani Penttinen, Heli Vesanto, Pentti Järvelä, Marjo Elorae, Tapio Hietaranta, Martti Turunen, Ritva Turunen
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Publication number: 20090181136Abstract: The invention relates to a method for sealing a package (1) containing a product (4), wherein the lid portion (3) and the bottom portion (2) of the package are joined together by means of plastic material. The bottom portion (2) and the lid portion (3) are joined together by sealing by injection molding, by molding plastic material (5) on both sides of a joint (10) between the bottom portion and the lid portion in such a way that the plastic material (5) exteriorly covers the joint (10) on the outside and joins the bottom portion (2) and the lid portion (3) together.Type: ApplicationFiled: March 31, 2007Publication date: July 16, 2009Applicant: Stora Enso OyjInventors: Heli Vesanto, Paivi Maatta, Tapani Penttinen, Marjo Elorae, Tapio Hietaranta, Risto Vesanto, Pentti Jarvela
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Publication number: 20090152333Abstract: The invention relates to a method for manufacturing a board tray (7), to a tray blank feasible for the method, and to a tray obtained by the method. The method comprises moulding a blank of plastic-coated board into the tray (7) comprising a bottom (3), side walls (4), as well as a rim flange (5), the blank being compressed in a direction transverse to the tray's side walls and rim flange. According to the invention, the blank is made thinner on its side opposite to the plastic coating such that, during the moulding process, the plastic coating double-folds at the compressed parts and stabilizes compressions (8) by becoming sealed to itself. Making the blank thinner is most conveniently effected by carving the board layer with a laser beam for having the fiber material predominantly or completely removed from where the cuts are located. As a result of the moulding process, the tray's rim flange (5) develops a smooth plastic surface which enables closing the tray hermetically with a heat-sealed cover.Type: ApplicationFiled: September 28, 2006Publication date: June 18, 2009Applicant: STORA ENSO OYIInventors: Paivi Maeaettae, Risto Vesanto, Panu Tanninen, Petri Laakso, Jari Hovikorpi
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Publication number: 20080128079Abstract: The invention relates to a method and an apparatus for jointing members made of plastic-coated paper or board. In accordance with the invention, the sealable members are retained in position with clamps (8) and sealing is performed with a laser sealing means (7) moving along the sealing line, a means (9) for opening the seal point pressing the members apart to continue keeping the seal point open, a laser beam (11) being directed to the open seal point for melting the coating plastic and a means (12) for closing the seal pressing finally the members against each other, the plastic jointing the members when solidified. The method is applicable to lateral sealing of bag or container packages formed of blanks (1), among other things.Type: ApplicationFiled: January 12, 2005Publication date: June 5, 2008Applicant: Stora Enso OyiInventors: Paivi Maatta, Petri Laakso, Jari Hovikorpi, Raimo Penttila, Nina Miikki, Risto Vesanto
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Publication number: 20070295445Abstract: The invention relates to a method for sealing a fibre-based material (1, 4) to a counter-surface to be bonded to it by melting polymer present at the sealing point. In accordance with the invention, the sealing is performed by directing a laser beam (8) through the fibre layer (4) of the material to a radiation-absorbing pigment disposed in the sealing area (9), with the absorption heat melting the polymer (5) and generating the sealing. The method allows sealing of plastic-coated paper or board to itself, to another plastic counter-surface or also to paper or board without any plastic coating. It is also possible to seal uncoated paper or board to paper or board containing plastic, such as plastic-coated paper or board, or to a plastic film. The absorptive pigment, e.g.Type: ApplicationFiled: February 24, 2005Publication date: December 27, 2007Applicant: Stora Enso OyjInventors: Paivi Maatta, Petri Laakso, Jari Hovikorpi, Risto Vesanto
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Publication number: 20070290027Abstract: The invention relates to a ready-made food package, to a method for manufacturing it and to the use of polymer-coated board in the ready-made food package. The package is manufactured by placing the food (16) in a raw state in the tray (2) where the food is baked, and by closing the tray with a lid (4) after baking. In accordance with the invention, the lid (4) is formed from a blank cut from polymer-coated board, the blank being placed over the mouth of the tray (2), and then the edges (9) of the blank are bent under the rim flange (6) of the tray and heat-sealed to the lower surface (11) of the rim flange by means of the polymer coating (14) of the board. The lid can be additionally heat-sealed to the upper surface (10) of the rim flange, so that two sealing lines (15) will be formed inside each other in the package. Accordingly, the tray (2) can be formed of polymer-coated board or optionally of polymer or aluminium alone.Type: ApplicationFiled: March 17, 2005Publication date: December 20, 2007Applicant: Stora Enso OYJInventors: Paivi Maatta, Panu Tanninen, Risto Vesanto
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Publication number: 20060222825Abstract: The invention relates to a method for using a polymer-coated paper or board as a printing substrate, to the printed product thus obtained and to the use of the coating. The invention relates to repeated use of the printing substrate, so that the printing ink is removed with a solvent from the surface that has been printed once, and the printing substrate thus cleaned is used for reprint. In accordance with the invention, the printing surface is formed of polysiloxane, to which polyester or styrene acrylate-based toners attach so as to be irremovable by mechanical means, yet removable by washing with a suitable solvent, such as acetone, for instance. A polysiloxane-coated paper or board is suitable especially for electro-photographic print with a dry toner, which can be fixed to the printing surface by fusion.Type: ApplicationFiled: April 7, 2004Publication date: October 5, 2006Inventors: Sami Haakana, Risto Vesanto