• Papermaking PAPERMACHINE – PRESSING 1. INTRODUCTION

    pressing operation is important for the capacity and economy of a paper machine and has great influence on paper quality. It determines the dryness of the sheet entering the dryer section. It has a major impact on the structure and runnability of the paper and thus the operating efficiency of the machine .

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  • Paper Machine Drives - Eaton

    Up to 70 lb paper 0.035 70 to 90 lb paper 0.056 90 to 130 lb paper 0.056 130 lb and above 0.056 Reel Up to 125 lb - except kraft 0.008 Above 125 lb - except kraft 0.008 All kraft paper 0.008 Presses Main press: (plain or suction) pair of main rolls 0.024 ˚ Power Requirements of Fourdrinier Machines Machine Section NRL Dual press Side rolls ...

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  • TEN MYTHS REVEALED ABOUT PAPER MACHINE VACUUM .

    couch, flatboxes, press, or uhle boxes because our vacuum factor is low compared to the TAPPI factors. A good guide for evaluating sheet solids exiting the former and press is in TAPPI TIP 0404-47, Paper Machine Performance Guidelines. This has values for each grade, with typical ranges and exceptional performance levels.

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  • R Rolling bearings in paper machines

    paper machine 1. Wire roll 2. Forward drive roll 3. Forming roll (suction roll) 4. Suction couch roll 5. Pick-up roll 6. Spreader roll 7. Felt roll 8. Shoe press 9. Drying cylinder 10. Vacuum roll 11. Guide roll (wire roll) 12 Deflection com-pensating press roll (soft calender) 13. Thermo roll .

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  • The Paper-Making Machine | ScienceDirect

    The construction of the machine, however, was different in that breast-roll and chest were in the middle of the machine; the wire and moulds travelled to the left and delivered their paper to a couch-roll, which picked it up onto an endless felt, and this carried it high above the machine back over the breast-roll and over the chest to the ...

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  • Troubleshooting paper machine vacuum systems: part I: low ...

    Sep 01, 2001· Free Online Library: Troubleshooting paper machine vacuum systems: part I: low vacuum levels can be caused by roll problems, vacuum line disturbances, and plugged pump screens.(Vaccum Systems) by "Solutions - for People, Processes and Paper"; Business Forest products industry

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  • Suction couch roll : Varaoke International Oy

    Kullervonkatu 20 B 112, 33500 Tampere, Finland +358 10 292 2090 Office hours: Monday – Friday: 9.00 – 17.00 Follow us on Facebook. Local time: 10/20/2020 01:07:55 pm

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  • Effect of Couch Roll Parameters on Paper Machine ...

    Effect of Couch Roll Parameters on Paper Machine Performance (English) Reese, R. A. / Technical Association of the Pulp and Paper Industry New search for: Reese, R. A.

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  • (PDF) The impact of press felt design on paper machine ...

    ric after the couch roll in paper forming [8] where pressure is absent. The amount ... Water removal by wet pressing on paper machines depends on many factors such as press impulse, pressure ...

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  • Papermaking OVERVIEW AND INTRODUCTION 1. Introduction and ...

    The Fourdrinier table of a paper machine consists of foils, table rolls, breast roll, couch roll, suction boxes, wire rolls, and other parts. The fabric on which the sheet of fibre is formed is a finely woven synthetic fabric of strands made of specially fine drawn and filaments, woven into a screen. Various types of weave are used to obtain ...

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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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  • Roll covers with competitive advantages | Voith

    Roll covers in tissue machines need to offer excellent wear and thermal resistance with high hardness stability to provide excellent operational safety. Coatings for Yankee cylinders must withstand rough conditions and therefore offer high wear and corrosion resistance.

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

    Breast Roll 41 Deckle Rulers 41 Forming Board 41 Table Rolls 42 Foils (Foil blades) 42 Wet Suction Boxes 44 Dry Suction Boxes 44 Dandy Roll 45 Couch Roll 47 Couch Press 48 Wire Turning Roll 49 3.2 Closed Transfer 49 3.3 Forming Fabric 50 Fabric Designs 50 Seaming 51 Fabric Quality 52 3.4 Auxiliary Rolls 54 Guide and Stretch Rolls 54 Bowed Roll 56

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  • Papermaking OVERVIEW AND INTRODUCTION 1. Introduction .

    Older paper machines sometimes use table rolls for this purpose. However, most modern paper machines now use foils. After the foil section on the forming table, the moving fabric passes over a series of vacuum boxes and then over a couch roll. Often, a dandy roll is located on top of the forming fabric over the suction boxes. This is a light ...

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  • Paper Machine Vacuum Suction Couch Roll - Buy paper ...

    Paper Machine Vacuum Suction Couch Roll, find complete details about Paper Machine Vacuum Suction Couch Roll, paper machine vacuum suction couch roll, vacuum roll paper machine, suction roll paper machine - Pulp equipment,Paper machine,Finishing equipment,Pulp equipment spare parts,Paper machine spare parts-SHANDONG EASTTAI PAPER MACHINERY CO.,LTD.

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  • Effect of Couch Roll Parameters on Paper Machine ...

    Effect of Couch Roll Parameters on Paper Machine Performance (English) Reese, R. A. / Technical Association of the Pulp and Paper Industry New search for: Reese, R. A.

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  • Couch Roll - PrintWiki

    A rotating, perforated metal cylinder at the end of a fourdrinier papermaking machine's forming section that uses a vacuum to remove water from the wet paper web before the web is sent to the press section.After passing through the couch roll, the paper web is still about 80:85% water. (See Fourdrinier.). It is called a "couch roll" because the moving felt belts of the press section were at ...

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  • Suction Couch Roll At Paper Machines Manufacturer,Supplier ...

    PAP-TECH ENGINEERS & ASSOCIATES - is one of the leading manufacturer,supplier & exporter of Suction Couch Roll At Paper Machines from Jaipur,Rajasthan,India

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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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  • Why Do We Use Couch Rolls? - Fourstones Paper Mill

    Couch Rolls also take up less space within salons in comparison to towels, a box of 9 Couch Rolls at 40m takes up just 510mm x 325mm x 325mm, this is equivalent to 360m of paper. Overall the utility, cost effectiveness and environmental factors of Couch Rolls in the beauty industry are undeniable, a great hygiene solution.

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  • Fourdrinier - an overview | ScienceDirect Topics

    Bryan Donkin's staggered top couch-roll arrangement. This was a most important discovery on the part of Donkin and led to vastly improved performance of the paper-making machine, higher speeds and the elimination for good of the top wire, which had always been a source of trouble and expense.

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  • China Paper Machine Rolls,Suction Press Roll,Vacuum Couch ...

    Product categories of Paper Machine Rolls, we are specialized manufacturers from China, Paper Making Rolls, Vacuum Press Roll suppliers/factory, wholesale high-quality products of Vacuum Couch Roll R & D and manufacturing, we have the perfect after-sales service .

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  • Paper Machine Components - Paper Mill Equipment, Paper ...

    Couch Rolls. IEN# 126733 - Beloit Suction Couch Roll, 188" Drilled Face, 201.5" Overall Face, 230" Bearing Centers, 38" Diameter, 5/8" Hole Diameter, 7/8" Shell Thickness, Rubber Cover, Spare, Rebuilt By Hamilton Machine, Year 2010, Rebuilt So5355 For Information...

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  • Paper Machine Couch Roll-China Paper Machine Couch Roll ...

    China Paper Machine Couch Roll - Select 2020 Paper Machine Couch Roll products from verified China Paper Machine Couch Roll manufacturers, suppliers on Made-in-China.

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  • Making Paper - The Paper Machine

    All paper prior to about 1803 was made by hand on molds which were dipped into the stock to form the sheet. In 1799 Nicolas-Louis Robert, in France, invented a machine in which the stock was delivered to an endless traveling wire cloth by a sort of revolving fan, passed between small squeeze rolls, and wound up in the wet condition in a roll.

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  • Paper Machine Vacuum Couch Roll, Vacuum Couch Roll ...

    Couch roll is the last dehydration components of fourdrinier paper machine, but also is an important dehydration components of twin-wire former paper machine. Paper machine vacuum couch roll is mainly by vacuum pumping, is high-pressure difference dehydration. Vacuum Couch Roll Tips. At low speeds, water and air go into the couch roll and the ...

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  • (PDF) The impact of press felt design on paper machine ...

    ric after the couch roll in paper forming [8] where pressure is absent. The amount ... Water removal by wet pressing on paper machines depends on many factors such as press impulse, pressure ...

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  • Buy and Sell Used Paper Machine Rolls | Perry Process ...

    188″ Face X 38″ Diameter Beloit Suction Couch Roll. Stock #785-SC-2. Used Beloit suction couch roll, 188″ drilled face, 201.5″ overall face, 230″ bearing centers, 38″ diameter, 5/8″ hole diameter, 7/8″ shell thickness, rubber cover, spare. Rebuilt by Hamilton machine, year 2010. Rebuilt so5355. Location: Northeast USA. Add to ...

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  • 8 Paper Machine Troubleshooting - AstenJohnson

    paper machine. Although it is difficult to list all possible causes for all machine types, these lists can be used to provide guidance in troubleshooting most equipment. 8 1 Forming Section Troubleshooting Guide Symptom Areas to Consider Barring • Condition of rolls (vibration) • Seals on couch roll • Vibration on all machine elements

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  • Sami paper machine improvements - SlideShare

    Jun 21, 2016· Edge flutter of paper into the press nip might cause sheet breaks Suction pick-up rolls can be modified to extend the vacuum zone on the ends to assure the paper is adhered to the bottom of the pick-up felt Suction pick-up roll modernization Improved pick-up & web handling Roll modernization for improved : + Pick-up + Tail threading + Web ...

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  • Design and Development of Cantilever Stationary Siphon ...

    efficiency of the paper machine. Basically Paper Machine has four distinct sections as described below. II. SECTIONS OF MACHINES A. Forming Section Forming section commonly called the wet end is where the slurry of fibers filters out fluid a continuous fabric loop to form a wet web of fiber. High efficiency wire part with plain couch roll

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  • Why Do We Use Couch Rolls? - Fourstones Paper Mill

    The roll is generally placed at the either end of the couch, the end of the roll is then pulled over the couch to the desired length. The selected length of the Couch Roll is then ripped off using the perforated section. At Fourstones Paper Mill we provide strong perforations with our Couch Roll products. As the product is perforated, it will ...

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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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