METHOD OF MANUFACTURING A MOULDED PULP PRODUCT AND PULP MOULDING APPARATUS

    公开(公告)号:EP3708709A1

    公开(公告)日:2020-09-16

    申请号:EP19173703.0

    申请日:2019-05-10

    IPC分类号: D21J7/00

    摘要: The method includes the following steps: activating the vacuum source (10), injecting an amount of pulp into the internal mould chamber (3) through the mould opening (7), thereby forming a pulp preform on the internal mould surface (8), injecting a dewatering and heating fluid through the mould opening at gradually increasing pressure until a maximum pressure, thereby performing a dewatering and drying step whereby the pulp preform on the internal mould surface is dewatered and dried, deactivating the injection of dewatering and heating fluid, deactivating the vacuum source, and extracting the moulded pulp product. Further included is a step of initiating rotation of the mould (2) about the central axis (4) of the mould and increasing rotational speed gradually, maintaining a maximum rotational speed of the mould at least during a substantial part of the dewatering and drying step, decreasing rotational speed gradually until standstill of the mould.

    TOOL OR TOOL PART FOR USE IN A PROCESS OF MOLDING A PRODUCT FROM A PULP SLURRY

    公开(公告)号:EP3656917A1

    公开(公告)日:2020-05-27

    申请号:EP20151612.7

    申请日:2014-12-22

    申请人: Celwise AB

    IPC分类号: D21J3/00 D21J7/00

    摘要: The present document discloses a tool or tool part for use in a process of molding a product from a pulp slurry. The tool or tool part comprises a self-supporting tool wall portion having a product face, for contacting the product, and a back face on the other side of the wall relative to the product face. The tool wall portion presenting pores, which are provided by a plurality of channels extending through the tool wall portion, from the product face to the back face. The channels are straight or curved with no more than one point of inflection.

    VERFAHREN UND VORRICHTUNG ZUM HERSTELLEN EINES DREIDIMENSIONALEN ERZEUGNISSES AUF DER BASIS VON CELLULOSE

    公开(公告)号:EP3587665A1

    公开(公告)日:2020-01-01

    申请号:EP18179933.9

    申请日:2018-06-26

    申请人: A&R Carton GmbH

    发明人: MACK, Ralf

    IPC分类号: D21J1/08 D21J1/16

    摘要: Verfahren zum Herstellen eines dreidimensionalen Erzeugnisses auf der Basis von Cellulose umfassend die folgenden Schritte:
    • Ein Cellulose enthaltener Rohling wird vor einer die Form des Erzeugnisses definierenden, formgebenden Oberfläche eines Formwerkzeuges positioniert,
    • ein bedrucktes Flachmaterial wird vor der formgebenden Oberfläche des Formwerkzeugs positioniert und mit einer Bedruckung registergenau auf die formgebende Oberfläche ausgerichtet und
    • der Rohling und das Flachmaterial werden erhitzt, gegen die formgebende Oberfläche gepresst und zu dem dreidimensionalen Erzeugnis geformt.