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    METHOD AND APPARATUS FOR SEALING A POLYMER COATED PAPER OR BOARD
    11.
    发明专利
    METHOD AND APPARATUS FOR SEALING A POLYMER COATED PAPER OR BOARD 未知

    公开(公告)号：CA2552408A1

    公开(公告)日：2005-07-28

    申请号：CA2552408

    申请日：2005-01-12

    Applicant: STORA ENSO OYJ

    Inventor： VESANTO RISTO ,  LAAKSO PETRI ,  HOVIKORPI JARI ,  MAEAETTAE PAEIVI ,  PENTTILAE RAIMO ,  MIIKKI NINA

    IPC: B29C65/16 ,  B31B50/64 ,  B31B50/66

    Abstract: 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 se al 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.

    12.
    发明专利
    未知

    公开(公告)号：FI20031247A

    公开(公告)日：2005-03-04

    申请号：FI20031247

    申请日：2003-09-03

    Applicant: STORA ENSO OYJ

    Inventor： VESANTO RISTO ,  MAEAETTAE PAEIVI

    IPC: B31B50/64 ,  B29C65/00 ,  B29C65/10 ,  B31B1/64

    Abstract: The invention relates to a heat-sealing method, in which a polymer material (1) forming the seal is melted or softened with an air flow (4) blown to the sealing point (11). In accordance with the invention, water (7, 9) is added to the air flow in order to increase the moisture content of the hot sealing air. The air is heated by resistance heating or flame heating and the water can be introduced in the hot air flow in the form of water, which subsequently evaporates, or in the form of water vapour. The method is suitable i.a. for producing packaging containers by sealing polymer­coated paper or board.

    "> Método y aparato para sellar un papel o cartón recubierto ( estucado,
    15.
    发明专利
    Método y aparato para sellar un papel o cartón recubierto ( estucado, " couché") con polímero 未知

    公开(公告)号：ES2383113T3

    公开(公告)日：2012-06-18

    申请号：ES05701730

    申请日：2005-01-12

    Applicant: STORA ENSO OYJ

    Inventor： MAEAETTAE PAEIVI ,  LAAKSO PETRI ,  HOVIKORPI JARI ,  PENTTILAE RAIMO ,  MIIKKI NINA ,  VESANTO RISTO

    IPC: B29C65/16 ,  B31B50/64 ,  B31B50/66

    Abstract: Un método para sellar elementos (3, 4) de papel o cartón recubierto con plástico, el método consiste en unir los elementos a lo largo de la línea de sellado fundiendo el recubrimiento de plástico de por lo menos un elemento con rayos láser (11), el recubrimiento de plástico, cuando solidifica, genera la unión pegada de los elementos uno con el otro, caracterizado porque los elementos (3, 4) que se quieren sellar se sujetan en posición adyacente a la línea de sellado con el fin de mantener los elementos en posición fija durante el sellado y porque el sellado se realiza mediante un agente de sellado (7), que se mueve a lo largo de la línea de sellado y presiona los elementos para que se separen, con el fin de mantener abierto el punto de sellado, dirige los rayos láser (11) hacia el punto de sellado abierto para fundir el plástico y finalmente presiona los elementos uno contra otro para cerrar el sello.

    18.
    发明专利
    未知

    公开(公告)号：FI118379B

    公开(公告)日：2007-10-31

    申请号：FI20040290

    申请日：2004-02-25

    Applicant: STORA ENSO OYJ

    Inventor： MAEAETTAE PAEIVI ,  LAAKSO PETRI ,  HOVIKORPI JARI ,  VESANTO RISTO

    IPC: B31B50/64 ,  B23K26/18 ,  B29C65/16 ,  B31B20060101 ,  B31B50/66 ,  B65B51/22

    Abstract: 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. carbon black, may be admixed in the plastic coating of the board or paper or the plastic film formed on the counter-surface, or the pigment may be located on the surface of the material to be sealed or its fiber layer, or on the counter-surface to which the material is sealed, e.g. as a component of printing ink applied to the counter-surface.

    19.
    发明专利
    未知

    公开(公告)号：FI20060319A0

    公开(公告)日：2006-03-31

    申请号：FI20060319

    申请日：2006-03-31

    Applicant: STORA ENSO OYJ

    Inventor： VESANTO HELI ,  MAEAETTAE PAEIVI ,  PENTTINEN TAPANI ,  JAERVELAE PENTTI ,  ELORAE MARJO ,  HIETARANTA TAPIO ,  VESANTO RISTO

    IPC: A23L35/00 ,  B65D20060101

    Abstract: 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.

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