DEEP DRAWN PAPER TRAY A METHOD AND AN APPARATUS FOR MAKING IT AND A TRAY FORMED PRODUCT PACKAGE

    公开(公告)号:IN7882DEN2014A

    公开(公告)日:2015-04-24

    申请号:IN7882DEN2014

    申请日:2014-09-22

    Applicant: STORA ENSO OYJ

    Abstract: The invention concerns a deep-drawn paper tray (4), particularly a shallow tray made of paperboard or cardboard, a method and an apparatus for manufacturing such a tray by deep-drawing techniques, and a closed product package comprising the tray of the invention, particularly a heat-sealed gas- and liquid-tight food package. The tray comprises a bottom (4a) and upwardly expanding side walls around the bottom, the side walls of the tray being shaped to expand through a plurality of circumferential steps (4b, 4c, 4d) dimensioned low enough for obtaining wrinkle-free side walls for the tray. The outermost step is a flat, wrinkle-free rim flange (4d), which enables liquid and gas proof heat-sealing of a lid to form the package. The apparatus according to the invention may comprise upper and lower moulding tools (10, 11) with concentric movable frames (10b, 10c, l0d) for forming the tray bottom and side wall steps to paper blanks, and moulding tools (10) may be mounted onto a rotating turret (9) carrying a paper blank through working stations arranged along the turret circumference, to shape the tray bottom and the side wall steps at the consecutive stations.

    A METHOD FOR MANUFACTURING A MOLDED CELLULOSE FIBER BASED PRODUCT FROM AN LC-AND HC-REFINED PULP

    公开(公告)号:SE2330347A1

    公开(公告)日:2025-02-10

    申请号:SE2330347

    申请日:2023-08-09

    Applicant: STORA ENSO OYJ

    Abstract: The present invention relates to a method for manufacturing a cellulose pulp composition for a moldable cellulose fiber based web, said method comprising:a) providing a cellulose pulp composition comprising at least 50 wt% chemical or semi-chemical wood pulp based on dry weight,b) subjecting the cellulose pulp composition provided in step a) to low consistency (LC) refining at a consistency in the range of 1-7 wt% to an SR value in the range of 18-50 as determined by standard ISO 5267-1, c) subjecting the LC-refined cellulose pulp composition obtained in step b) to high consistency (HC) refining at a consistency in the range of 12-40 wt% with a refining energy of at least 150 kWh/t, andd) diluting the HC-refined cellulose pulp composition obtained in step c) to a consistency in the range of 0.1-10 wt%. The invention further relates to a method for manufacturing a moldable cellulose fiber based web and a method for manufacturing a molded cellulose fiber based product.

    Processo para produção de pelo menos uma camada de um produto de papel ou de papelão e um produto de papel ou de papelão

    公开(公告)号:BR112016029130B1

    公开(公告)日:2022-02-08

    申请号:BR112016029130

    申请日:2015-06-11

    Applicant: STORA ENSO OYJ

    Abstract: processo para produção de pelo menos uma camada de um produto de papel ou de papelão e um produto de papel ou de papelão. a presente invenção se refere a um processo para produção de pelo menos uma camada de um produto de papel ou de papelão. em concordância com apresente invenção, o processo compreende as etapas de: - sujeição de fibras celulósicas para tratamento térmico em que as fibras são tratadas em um alto conteúdo seco e em uma temperatura aumentada; - preparação de uma pasta fluida compreendendo referidas fibras tratadas termicamente; - formação de uma rede de referida pasta fluida; e: - desidratação de referida rede por intermédio do que uma camada de referido produto é formada. a presente invenção adicionalmente se refere a um produto de papel ou de papelão produzido em concordância com o processo acima mencionado.

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