Method and apparatus for producing a fibre web

Riku Pihko (Inventor), Jani Lehmonen (Inventor), Kay Rökman (Inventor)

    Research output: PatentPatent


    According to an example aspect of the present invention, there is provided an apparatus and a method comprising a forming section for feeding an aqueous furnish of fibres on a moving surface to form a shape of a product and a pressing and heating section for removing water from the shaped product received from the moving surface. The pressing and heating section comprises a felt and metal belt that are set to run against each other for receiving the furnish from the moving surface and heating elements for heating the web in at least two pulses including at least one first pulse wherein the product is pressed for at least 10-200 ms on a first pressure and at least one second heating and smoothing pulse wherein the product is heated at least for 10-200 ms on a pressure that is higher than the first pressure, and at least one of the surfaces pressing the product being the smooth metal belt.

    Patent family as of 14.12.2021
    BR112019006917 A2 20190625 BR20191106917 20171004      
    CN110036153 A 20190719 CN201780075268 20171004      
    EP3523476 A1 20190814 EP20170787465 20171004      
    EP3656915 A1 20200527 EP20190218678 20171004      
    FI127892 B 20190515 FI20160005747 20161005      
    FI20165747 A 20180406 FI20160005747 20161005      
    US10954632 BB 20210323 US20190339476 20171004      
    US2020040528 AA 20200206 US20190339476 20171004      
    US2021156089 AA 20210527 US20210167115 20210204      
    WO18065668 A1 20180412 WO2017FI50696 20171004

    Link to currentpatent family on right 

    Original languageEnglish
    Patent numberUS10954632
    IPCD21F 11/ 00 A I
    Priority date4/10/17
    Publication statusPublished - 6 Feb 2020
    MoE publication typeH1 Granted patent


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