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.

公开(公告)号：CA2624040C

公开(公告)日：2016-04-05

申请号：CA2624040

申请日：2006-09-28

Applicant: STORA ENSO OYJ

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

IPC: B65D1/34 ,  B29C43/20 ,  B31B45/00 ,  B31B50/59 ,  B32B27/10 ,  B65B43/08 ,  B65D20060101 ,  B65D1/40

Abstract: 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.

公开(公告)号：CA2557506C

公开(公告)日：2012-12-04

申请号：CA2557506

申请日：2005-02-24

Applicant: STORA ENSO OYJ

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

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

Abstract: 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. 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 fibre 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.

公开(公告)号：ES2343467T3

公开(公告)日：2010-08-02

申请号：ES05717245

申请日：2005-02-24

Applicant: STORA ENSO OYJ

Inventor： MAATTA PAIVI ,  LAAKSO PETRI ,  HOVIKORPI JARI ,  VESANTO RISTO

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

Abstract: Método para sellar un material de papel o cartón (1, 4) contra una contrasuperficie fundiendo un polímero que está presente en el punto de sellado, siendo el sellado llevado a cabo dirigiendo un haz láser (8) a través de una capa de fibra (4) del material a la zona de sellado (9) fundiendo con ello el polímero (5, 11, 12, 14, 15) y generando así el sellado; caracterizado por el hecho de que el láser procede de una fuente láser de diodo o de Nd:YAG (7) y un pigmento absorbente de radiación está dispuesto en la zona de sellado.

公开(公告)号：CA2624040A1

公开(公告)日：2007-04-05

申请号：CA2624040

申请日：2006-09-28

Applicant: STORA ENSO OYJ

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

IPC: B65D1/34 ,  B29C43/20 ,  B31B45/00 ,  B31B50/59 ,  B32B27/10 ,  B65B43/08 ,  B65D20060101 ,  B65D1/40

Abstract: 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.

公开(公告)号：FI20050975A

公开(公告)日：2007-03-30

申请号：FI20050975

申请日：2005-09-29

Applicant: STORA ENSO OYJ

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

IPC: B65D20060101 ,  B29C43/20 ,  B31B45/00 ,  B31B50/59 ,  B65D1/34 ,  B65D1/40

Abstract: 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.

公开(公告)号：CA2557506A1

公开(公告)日：2005-09-01

申请号：CA2557506

申请日：2005-02-24

Applicant: STORA ENSO OYJ

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

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

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.

公开(公告)号：ES2348810T3

公开(公告)日：2010-12-14

申请号：ES06794093

申请日：2006-09-28

Applicant: STORA ENSO OYJ

Inventor： TANNINEN PANU ,  HOVIKORPI JARI ,  MAATTA PAIVI ,  LAAKSO PETRI ,  VESANTO RISTO

IPC: B65D1/34 ,  B29C43/20 ,  B31B45/00 ,  B31B50/59 ,  B32B27/10 ,  B65B43/08 ,  B65D20060101 ,  B65D1/40 ,  B65D5/42

Abstract: Un procedimiento para fabricar una bandeja de cartón (7) que tiene un fondo (3), paredes laterales (4), y una pestaña de borde (5), comprendiendo el procedimiento las etapas de - proporcionar una preforma (1) de cartón recubierto de plástico (9, 10) con zonas concéntricas para el fondo, las paredes laterales y la pestaña de borde de la bandeja, - cortar la preforma (1) más delgada desde su lado opuesto al revestimiento de plástico (9), extendiéndose los cortes (6) transversalmente a través de las zonas para las paredes laterales (4) y la pestaña de borde (5) de la bandeja, - moldear la preforma (1) en la bandeja (7), incluyendo el moldeo comprimir la preforma a lo largo de los cortes (6) y plegar doblemente el revestimiento de plástico (9) en las compresiones (8), y - fundir el revestimiento de plástico (9) en las compresiones (8) para sellar el revestimiento a sí mismo y para estabilizar la bandeja (7) para conservar su forma.

公开(公告)号：FI117933B

公开(公告)日：2007-04-30

申请号：FI20050975

申请日：2005-09-29

Applicant: STORA ENSO OYJ

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

IPC: B65D1/34 ,  B29C43/20 ,  B31B45/00 ,  B31B50/59 ,  B32B27/10 ,  B65B43/08 ,  B65D20060101 ,  B65D1/40

Abstract: 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.

公开(公告)号：FI20040290A

公开(公告)日：2005-08-26

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 ,  B31B

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.