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    METHOD AND APPARATUS FOR MOULD-FORMING EXPANDED PLASTICS FOAM BLOCKS.
    51.
    发明公开
    METHOD AND APPARATUS FOR MOULD-FORMING EXPANDED PLASTICS FOAM BLOCKS. 失效
    方法和设备发泡塑料泡沫块 - 通过模具的生产。

    公开(公告)号：EP0172853A4

    公开(公告)日：1987-11-23

    申请号：EP85900959

    申请日：1985-02-26

    申请人： TREFFNER PETER ,  TREFFNER CHARLES

    发明人： TREFFNER PETER

    IPC分类号： B29C44/20 ,  B29C44/28 ,  B29C44/58 ,  C08J9/22 ,  B29C43/10 ,  B29C67/22

    CPC分类号： B29C44/206 ,  B29C44/445 ,  Y10S264/15

    摘要： A method of making an expanded plastics foam block section and uniting it with a prior made, or partly made, section comprising the steps of charging a mould space of which one end is defined by a surface of the prior section with expandable plastics beads, initiating the expansion and fusion of the beads to create a cohesive but largely unexpanded mass of beads, obtruding the prior section into the mould space to compress a zone of the cohesive mass adjacent to the said one end, increasing the temperature and pressure in the mould space to complete the expansion and fusion process and to compress the end zone of the prior section to bring its end substantially to its unobtruded position, lowering said pressure and temperature, and ejecting the newly made block section from the mould space. Apparatus for performing the method is also disclosed.

    OPTICAL DETERMINATION OF A CONTROL SIGNAL FOR SLABSTOCK POLYURETHANE FOAM PRODUCTION
    54.
    发明公开
    OPTICAL DETERMINATION OF A CONTROL SIGNAL FOR SLABSTOCK POLYURETHANE FOAM PRODUCTION 审中-公开

    公开(公告)号：EP4257327A1

    公开(公告)日：2023-10-11

    申请号：EP22167358.5

    申请日：2022-04-08

    申请人： Evonik Operations GmbH

    发明人： KIWITT, Jörn ,  LANDERS, Rüdiger ,  TOMUSCHAT, Philipp

    IPC分类号： B29C44/60 ,  B29C44/28 ,  B29C44/56 ,  B29C44/46

    摘要： Disclosed herein is a method of producing a polyurethane foam block (137) using a foam production machine (100) configured for producing polyurethane foam as a slabstock (137) using a continuous slabstock process defined by at least one process parameter, such as a raw material output factor or a conveyor speed, the foam production machine including a mixing head (102) configured to mix precursor reagents for forming a reactive mixture, and a conveyor (106) configured to receive the reactive mixture. The method comprises: mixing (800) the precursor reagents in the mixing head to provide the reactive mixture; dispensing (802) the reactive mixture to initiate foaming of the reactive mixture; receiving (804) the reactive mixture by the conveyor; cutting (806) the polyurethane foam block from an end portion (720) of the slabstock to produce a cut surface (724), wherein the polyurethane foam comprises foam cells, wherein the intersection of the cut surface with the foam cells forms a foam cell structure (906); acquiring (808) a digital image (742) of at least a portion of the cut surface using an imaging system (706), wherein the digital image depicts the foam cell structure; inputting (810) the digital image into a trained machine learning module (762, 1000, 1200), the trained machine learning module being trained to produce a two-dimensional segmentation (1012) of the foam cell structure at the cut surface; and receiving (812) a control signal (744) for changing the least one process parameter of the continuous slabstock process in response to inputting the digital image into the trained machine learning module.

    A SYSTEM FOR CONTROLLING THE SIZING OF A RISING FOAM EMULSION WEB TRAVELLING ON A CONVEYOR
    57.
    发明公开
    A SYSTEM FOR CONTROLLING THE SIZING OF A RISING FOAM EMULSION WEB TRAVELLING ON A CONVEYOR 审中-公开

    公开(公告)号：EP3907056A1

    公开(公告)日：2021-11-10

    申请号：EP20172690.8

    申请日：2020-05-04

    申请人： Mölnlycke Health Care AB

    发明人： LIBBY, Fred ,  KENNEDY, Tyler

    IPC分类号： B29C44/28 ,  B29C44/46 ,  B29C44/60

    摘要： The present disclosure relates to a system (1) for controlling the sizing of a rising foam emulsion (2) web travelling on a conveyor (4). The system comprising a plate arrangement (8) and an actuating arrangement (18). The plate arrangement (8) comprises at least a first (8a) and a second (8b) plate, each having a web-facing lower side (10) and an opposite upper side (12). The second plate (8b) is configured to be located downstream of the first plate (8a) with respect to the direction of travel of the foam emulsion web. The actuating arrangement (18) comprises a base portion (20) and a top portion (22). The top portion (22) is movable relative to the base portion (20) and operatively connected to the plate arrangement (8). The actuating arrangement (18) is configured to individually adjust for each plate a separating distance relative to the base portion (20), for controlling the rising of the foam emulsion web along at least a part of its travel.