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    Method and apparatus for deep-drawing a tray from sheet material
    1.
    发明授权
    Method and apparatus for deep-drawing a tray from sheet material 有权

    公开(公告)号：US11548257B2

    公开(公告)日：2023-01-10

    申请号：US15034365

    申请日：2014-10-17

    Applicant: Stora Enso OYJ

    Inventor： Jari Räsänen ,  Henry Lindell ,  Kimmo Nevalainen ,  Panu Tanninen ,  Sami Matthews ,  Mari Hiltunen ,  Outi Kylliainen

    IPC: B29C51/30 ,  B31F1/00 ,  B29C51/08 ,  B29C51/14 ,  B31B50/59 ,  B31B110/20 ,  B29K105/00 ,  B29L9/00 ,  B29L31/00

    Abstract: The invention relates to a method and an apparatus for deep-drawing a tray (1) from fiber-based sheet material (2), such as polymer coated board. The apparatus comprises a female moulding tool (3), which comprises a cavity (7) for forming the tray bottom outwardly, a male moulding tool (4), which comprises a plunger plate (11) for forming the tray bottom inwardly, the plunger plate being movable with respect to the cavity for forming the tray, and clamps (6, 15) with an interface for holding the sheet material and forming a tray rim flange. According to the invention by laterally distancing at least one of the moulding tools (3, 4) from the sheet material leeway is provided for free forming of the tray side walls while wrinkling or tearing of the same is avoided. Spacer plates (13) may be positioned behind the plunger plate (11), to adjust its position in relation to the cavity (7) of the female moulding tool (3). The cavity may have a separate bottom plate (8) and spacer plates (9) there below, or screw means may be provided for adjusting the distance of the bottom of the cavity from the clamp interface and thereby varying the depth of the tray.

    METHODS FOR MAKING PAPER OR BOARD, A BOARD TRAY AND PULP PARTICLES COATED WITH FOAMABLE POLYMER FOR USE IN THE SAME
    5.
    发明申请
    METHODS FOR MAKING PAPER OR BOARD, A BOARD TRAY AND PULP PARTICLES COATED WITH FOAMABLE POLYMER FOR USE IN THE SAME 审中-公开

    公开(公告)号：US20200308768A1

    公开(公告)日：2020-10-01

    申请号：US16076197

    申请日：2017-02-06

    Applicant: Stora Enso OYJ

    Inventor： Jari Räsänen ,  Mari Hiltunen ,  Ali Harlin ,  Hanna Koskela ,  Christiane Laine ,  Laura Kela

    IPC: D21F11/00 ,  C08J9/16 ,  B31F1/00 ,  B65D1/34 ,  C08J9/228 ,  D21H21/22 ,  D21H21/56

    Abstract: The invention concerns a method of manufacturing paper or board, the paper or board obtained by the method, and a method of producing a tray from the board. In a fibrous stock for papermaking is incorporated an amount of polymer coated fibrous particles, which even have a foaming agent such as moisture contained therein. A web is formed from the fibrous stock on a forming fabric of a paper or board machine, followed by pressing and drying to a finished paper or board. As the paper or board is sufficiently heated the foaming agent within the particles evaporates, causing expansion and foaming of the polymer coating, which adds to malleability of the board as it is moulded into a shaped article such as a board tray. The invention even covers production of doubly coated fibrous particles for use in said methods, the inner coating layer being of a foamable polymer with a higher melt flow rate and the outer coating layer being of a non-foaming polymer of a lower melt flow rate.

    METHOD AND APPARATUS FOR DEEP-DRAWING A TRAY FROM SHEET MATERIAL
    6.
    发明申请
    METHOD AND APPARATUS FOR DEEP-DRAWING A TRAY FROM SHEET MATERIAL 审中-公开
    方法和装置从板材中深入一张纸盘

    公开(公告)号：US20160288445A1

    公开(公告)日：2016-10-06

    申请号：US15034365

    申请日：2014-10-17

    Applicant: STORA ENSO OYJ

    Inventor： Jari Räsänen ,  Henry Lindell ,  Kimmo Nevalainen ,  Panu Tanninen ,  Sami Matthews ,  Mari Hiltunen ,  Outi Kylliainen

    IPC: B31F1/00 ,  B29C51/14 ,  B29C51/30 ,  B29C51/08

    CPC classification number: B31F1/0077 ,  B29C51/08 ,  B29C51/082 ,  B29C51/145 ,  B29C51/30 ,  B29C51/306 ,  B29K2105/256 ,  B29K2995/0067 ,  B29K2995/0069 ,  B29L2009/005 ,  B29L2031/712 ,  B31B50/592 ,  B31B2110/20 ,  B31F1/00

    Abstract: The invention relates to a method and an apparatus for deep-drawing a tray (1) from fiber-based sheet material (2), such as polymer coated board. The apparatus comprises a female moulding tool (3), which comprises a cavity (7) for forming the tray bottom outwardly, a male moulding tool (4), which comprises a plunger plate (11) for forming the tray bottom inwardly, the plunger plate being movable with respect to the cavity for forming the tray, and clamps (6, 15) with an interface for holding the sheet material and forming a tray rim flange. According to the invention by laterally distancing at least one of the moulding tools (3, 4) from the sheet material leeway is provided for free forming of the tray side walls while wrinkling or tearing of the same is avoided. Spacer plates (13) may be positioned behind the plunger plate (11), to adjust its position in relation to the cavity (7) of the female moulding tool (3). The cavity may have a separate bottom plate (8) and spacer plates (9) there below, or screw means may be provided for adjusting the distance of the bottom of the cavity from the clamp interface and thereby varying the depth of the tray.

    Abstract translation: 本发明涉及一种用于从诸如聚合物涂布板的纤维基片材（2）深拉一托盘（1）的方法和装置。 该装置包括一个阴模成型工具（3），它包括用于向外形成托盘底部的空腔（7），一个阳模制工具（4），其包括用于向内形成托盘底部的柱塞板（11） 板可相对于用于形成托盘的空腔移动，以及具有用于保持片材的界面的夹具（6,15），并形成托盘边缘凸缘。 根据本发明，通过横向间距将片材材料余料中的至少一个模制工具（3,4）设置成用于托盘侧壁的自由形成，同时避免了其起皱或撕裂。 间隔板（13）可以位于柱塞板（11）的后面，以调节其相对于阴模塑工具（3）的空腔（7）的位置。 空腔可以在其下方具有单独的底板（8）和间隔板（9），或者可以设置螺旋装置用于调节空腔的底部与夹紧界面的距离，从而改变托盘的深度。

    Method and apparatus for deep-drawing a tray from sheet material
    9.
    发明授权
    Method and apparatus for deep-drawing a tray from sheet material 有权

    公开(公告)号：US11241855B2

    公开(公告)日：2022-02-08

    申请号：US15518178

    申请日：2015-10-08

    Applicant: Stora Enso OYJ

    Inventor： Jari Räsänen ,  Kimmo Nevalainen ,  Henry Lindell ,  Panu Tanninen ,  Sami Matthews ,  Mari Hiltunen ,  Outi Kylliainen

    IPC: B31F1/00 ,  B31B50/44 ,  B65D1/26 ,  B65D1/34 ,  B31B70/00 ,  B31B160/10 ,  B31B50/59 ,  B31B100/00 ,  B31B50/25

    Abstract: The invention relates to a method and an apparatus for deep-drawing a tray (1) from a blank of sheet material (2). The blank is provided with score lines, which determine the location of wrinkles formed in the process. The apparatus comprises a female moulding tool (3), which comprises a cavity (7) for forming the tray bottom outwardly, a male moulding tool (4), which comprises a plunger (11) for forming the tray bottom inwardly, the plunger being movable with respect to the cavity for forming the tray, and clamps (6, 15) with an interface for holding the sheet material and forming a tray rim flange. According to the invention by laterally distancing at least one of the moulding tools (3, 4) from the sheet material leeway is pro-vided for free forming so that wrinkling of the tray side walls is achieved in a controlled manner. Spacer plates (13) may be positioned behind the plunger (11), to adjust its position in relation to the cavity (7) of the female moulding tool (3). The cavity may have a separate bottom plate (8) and spacer plates (9) therebelow, or screw means may be provided for adjusting the distance of the bottom of the cavity from the clamp interface and thereby varying the depth of the tray.

    CONTAINER FOR LIQUID CONTAINING FOOD PRODUCTS
    10.
    发明公开
    CONTAINER FOR LIQUID CONTAINING FOOD PRODUCTS 审中-公开

    公开(公告)号：US20230339646A1

    公开(公告)日：2023-10-26

    申请号：US17997842

    申请日：2021-05-04

    Applicant: Stora Enso OYJ

    Inventor： Ville Ribu ,  Nina Miikki ,  Mari Hiltunen ,  Juha Varis ,  Panu Tanninen ,  Mika Kainusalmi

    IPC: B65D1/44 ,  B65D1/34 ,  B65D81/34 ,  B31B50/59 ,  B31B50/88

    CPC classification number: B65D1/44 ,  B65D1/34 ,  B65D81/3453 ,  B31B50/592 ,  B31B50/88 ,  B31B2110/35

    Abstract: The present invention relates to a container for liquid containing food products, manufactured by press forming of a polymer coated fiber based substrate, said container comprising a bottom portion, a sidewall portion and a top flange portion, wherein said press forming has resulted in the formation a plurality of creases extending in a direction from the bottom portion to the top flange portion and further across the top flange portion. The container comprises an indentation pattern (130, 140, 150, 160, 170, 180, 190a, 190b, 200) formed at a creased inner surface of said sidewall portion and/or at a creased top surface of said top flange portion, said indentation pattern preventing migration of liquid from a liquid containing food product in the container along said creases. The invention relates also to a method for manufacturing such container.

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