• Couch Roll

    The function of couch roll (pronounced "cooch") of a paper machine is to remove water by application of vacuum. It also serves as the final "wrap" where the wet web exits the forming fabric on its way to the wet-press section. The surface of the couch roll is covered with rows of small holes.

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  • Forming section roll cover for tissue machines | Valmet

    Improved reliability with forming roll covers. Roll covers operate in a wet, corrosive environment in the forming section of tissue machines. The frequency of roll rotation is extremely high as the small rolls have to carry fabrics to reach the desired machine speed.

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  • Paper Machine System Diagram - TMEIC

    Forming Section A typical flat former is a continuous rotating wire (today this is plastic) mesh that removes water from the paper by sucking it out of suspension. Multi-layer paper machines and paper board machines include additional forming sections (one forming section for each layer of paper). Forming section drives have a high

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  • Paper Machine Design and Operation--Descriptions and ...

    Optimization of Roll Drainage 97 Blade Section Drainage 97 4.15 Paper Quality Considerations 98 4.16 High-Consistency Forming 99 4.17 Paperboard Machine Formers 101 4.18 Tissue Machine Formers 103 Valmet "C-Wrap" 103

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  • STUDY OF STOCK JUMP AND VACUUM FORCE ON

    The First Paper Machine of Louis Robert The Donkin Machine A Typical Modem Fourchnier Machine nie Forming Board Table Roll Action Gravity Foil vs. Table Roll Dewatering Action Illustrating Comparative Pressure Peaks Vacuum Profiles on a 3 Degree Gravity Foil and a 1.14 mm Step Foil Shapes of Vacuum Pulse at Step Depths 0.533 and 1.143 mm

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  • roll covers for the Schaefer Rolls paper making industry

    Machine position Hardness Cover thickness Features roll covers for the paper making industry Y Compound SchaeferRolls SchäferRolls&Co.KG Renningen,Germany Tel +49 /7159/80 6- 0 ©SchaeferRolls us3–03/2010 Sava-Schäferd.o.o. Kranj,Slovenia Tel+386 /4206-5363 SchaeferRollsInc. Farmington,N.H.,USA Tel+1 /603 -335 -1786

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  • A brief overview of the fourdrinier paper making process ...

    Jan 28, 2013· Each roller in the Dryer Section can have a diameter of several metres, the width of the a reel of paper can be 10 metres long and weigh several tonnes. From Top Box to Dry End could cover the distance of a football field.the machines are so large that operatives have to use three wheel scooters to move from one end to the other.

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  • Roll covers for paper and board | Valmet

    Roll covers from recyclable and renewable raw materials. Could paper machine roll covers be made of recycled or even bio-based raw materials? After less than two years' intensive R&D work, Valmet has introduced new composite covers for press, guide and calender rolls representing a new, more sustainable generation of roll cover materials.

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  • Forming section and sheet forming - Valmet

    The forming section concepts include solutions for gap forming, hybrid forming and Fourdrinier applications which can be used for new line installations and rebuilds alike. OptiFormer Gap, Hybrid and Fourdrinier application methods are available in the OptiFormer family. Valmet's forming sections provide energy-efficient operation with high ...

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  • Design of a paper slitting and rewinding machine for a ...

    Paper slitting and rewinding is the process of cutting a large jumbo reel of paper by moving it through an array of knives before rewinding it on one or more shafts into smaller standardised winds for custom uses (Wikipedia, the free encyclopedia, 2015). Machines known as slitter-rewinders are used to cut parent reels into various roll widths

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  • Terminology On Paper & Pulp: Types of Paper and ...

    Fourdrinier Paper Machine Named after its sponsor, with its modifications and the Cylinder machine, comprise the machines normally employed in the manufacture of all grades of paper and board. The fourdrinier machine, for descriptive purposes, may be divided into four sections: the wet end, the press section, the drier

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  • Paper machine headbox | pulp paper mill

    Dec 16, 2017· The paper machine headbox is an equipment that supply very low consistency stock into the forming section uniformly. The formation and uniformity of the final paper product depends on the dispersion of the fiber and fillers.The furnish delivery system varies on the construction of the headbox.

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  • Paper Machine System Diagram - TMEIC

    Forming Section A typical flat former is a continuous rotating wire (today this is plastic) mesh that removes water from the paper by sucking it out of suspension. Multi-layer paper machines and paper board machines include additional forming sections (one forming section for each layer of paper). Forming section drives have a high

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  • Lead Roll – Press Section Pulp & Paper — Paper Machine .

    (guide and tension) in the forming section have been coated with ARC S2 Vacuum grit blasting roll surface ARC 858 being applied Curing ARC coated surfaces Pulp & Paper — Paper Machine ARC 858 Coating Case Study 034 EN23593.32 09/14

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  • Paper forming products - Woollard & Henry

    Woollard & Henry manufactures a Cover Cantilever System both for banknote cover fitting to the ECM and plain covers to be fitted to a Dandy roll. Specifically designed to suit your application and available space, fixed or transportable options. ... We can provide complete design and manufacture of a Short Forming Section for lightweight ...

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  • TEN MYTHS REVEALED ABOUT PAPER MACHINE VACUUM .

    • Now consider the older paper machine which has been rebuilt 1, 2, or 3 times and ask what the vacuum system might have looked like with a clean sheet of paper. • Following a survey of one newly rebuilt machine with a new press, many problems were identified with improper vacuum control and excess vacuum capacity.

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  • Breast roll / forming roll - Hannecard

    Hannecard >> Industries >> Paper >> Forming section >> Breast roll / forming roll >

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  • Paper Machine Vacuum Systems - Convergence Training

    Vacuum systems perform three main functions on paper and board machines. In the forming section, vacuum is used to help de-water the stock as the sheet forms. In the press section, vacuum is used to de-water and clean the press felts, which in turn remove water from the sheet.

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  • Papermaking PAPERMACHINE – PRESSING 1. INTRODUCTION

    The paper web formed on the wire part or the forming section passes onto the press section. Pressing of the web on the paper machine follows entering of wet web through the nip of two rolls running under pressure. ... Phase-4 covers the point where the paper starts to expand and becomes

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  • Paper Machine Suction Rolls and Roll Covers - YouTube

    Jun 05, 2014· Visit https://goo.gl/cDnJdW to view the full video and purchase access to our other Paper, Box, and Tissue courses. Though their design and construction are ...

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  • Dewatering aspects at the Dewatering aspects at the ...

    Dewatering aspects at the forming section of the paper machine - Rewetting and forming fabric structure WWW.KAU.SE ISBN 978-91-7063-745-2 (pdf) ISBN 978-91-7063-744-5 (print) i Abstract The underlying motives of the research undertaken here are twofold:

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  • Roll covers in the paper machine Calender

    Hard roll coatings in the calendering section of the paper machine have a major impact on the quality of the paper produced. The surface properties of the hard thermo rolls determine the quality of the finished product. We engineer our covers to provide the optimum paper surface character - istics while providing extended run cycles under high spe-

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  • Paper Machine - an overview | ScienceDirect Topics

    The dryer section of the paper machine dries the paper by way of a series of internally steam-heated cylinders that evaporate the moisture. The dryer section of a paper machine removes between 1.1 and 1.3 kg of water per kg of paper compared with 200 and 2.6 kg in the forming and press sections, respectively. It is significantly more expensive ...

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  • Roll covers for forming section | Valmet

    The universal task for roll covers in the forming section is to maintain roll dimensions such as the roll diameter profile in CD, so that wires can be rotated and guided smoothly and gently in the rolls without slipping or other problems. Valmet lead roll covers protect rolls in harsh, abrasive and wet environment from wear and corrosion.

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  • Heat Shrinkable Roll Covers | Zeus

    Printer and Photocopier Rollers – When used to cover print rollers, our heat shrink can extend the life of your roller while improving the quality of the image; better quality imaging means that printer speeds can be increased.. Paper Processing Rollers – For this application, FEP roll coverings applied to feed rollers improve paper handling for more trouble-free operation.

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  • Fourdrinier paper machine forming section - YouTube

    Jun 26, 2016· Fourdrinier paper machine forming section TDM Paper Machine. ... Yankee cover: Breath type shield Forming type: Fourdrinier paper forming machine ... Paper Machine Suction Rolls and Roll Covers ...

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  • On suction box dewatering mechanisms

    Water removal on a Fourdrinier paper machine (Krook, 1996). During paper making, effective dewatering is very important for cost-effective paper production and good runnability on the paper machine. It occurs in all three sections of a paper machine, i.e. the forming, press and drying sections. In the forming section, water is removed by ...

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  • roll covers for the Schaefer Rolls paper making industry

    Machine position Hardness Cover thickness Features roll covers for the paper making industry Y Compound SchaeferRolls SchäferRolls&Co.KG Renningen,Germany Tel +49 /7159/80 6- 0 ©SchaeferRolls us3–03/2010 Sava-Schäferd.o.o. Kranj,Slovenia Tel+386 /4206-5363 SchaeferRollsInc. Farmington,N.H.,USA Tel+1 /603 -335 -1786

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  • Paper Machine Suction Rolls & Roll Covers - Convergence ...

    Roll cover selection should take into account the functions of the roll and the operating conditions. Learning Objectives Explain the purpose of suction rolls in the forming and press sections of a paper or board machine

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  • The Pulp and Paper Making Processes

    the ''wet end* of the paper-forming machine. In the paper making process, the dilute stock passes through a headbox that distributes the fiber slurry uniformly over the width of the paper sheet to be formed. The "web" of fiber that will make the new paper sheet is formed on a continuously moving

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  • Roll Covers | Xerium

    Roll Covers. Since 1886, Xerium's Stowe Woodward division has been at the forefront of fabricating rubber, polyurethane, ceramic and composite roll covers for steel rolls used in the most demanding applications of papermaking and other industries. Papermakers rely on our roll cover technologies and roll refurbishment services to keep them in full production.

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  • Paper machine showers | pulp paper mill

    May 22, 2014· All the section in paper machine needs shower. Wire cloth should be free from contaminants in order to keep sufficient open area for proper drainage, surface characteristics, to quality sheet marking and longer life. Press felts should also be cleaned for reduce paper .

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About us

Founded in 1982, Dekelon Paper Making Machinery Co.,Ltd. has always striven to meet and exceed customer expectations and continue to update and improve...

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