• Influence of forming conditions on fiber tilt

    rush-drag) is a reflection of low shearing forces at that condi - 1. Definition of angles, looking down on the web from the felt side. I. Glossary of variables. MD, CD, ZD Machine, cross-machine, and thickness directions J, J Local jet velocity vector and magnitude W, W Wire velocity vector and magnitude β .

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  • White paper: Flow Sheets 101

    2/25/2010· This paper will touch on the three types of flow sheet geometry: tapered, bullet, and blunt. Also discussed ... including furnish, rush/drag ratio, flow rate, slice opening and more. This takes significant process ... affecting overall paper machine productivity.

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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 ... • Rush/drag or jet/wire ratio • Fabric tension (may be too low) • Excessive fabric wear • Fabric drainage capacity (may need to increase fabric drainage)

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  • What influences the TSI Area and how does it show in .

    8/31/2016· In Paper Making we also talk about Drag and Rush. This is the Ratio between the Jet Speed and the Wire Speed. ... How you run the Paper Machine is very much depending on the Paper .

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  • Jet-to-Wire Speed Difference

    The "wire" is the continuous belt of forming fabric. Often it is possible to improve the uniformity of paper by running at a non-zero jet-to-wire speed difference. "Rushing the sheet" means that the jet speed is higher than the wire speed.

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  • Paper machine headbox | pulp paper mill

    12/16/2017· 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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  • Improved Energy Efficiency in Paper Making Through ...

    Energy Use on the Paper Machine • Paper machines use between 50% and 80% of mill energy (when there are no pulp mills on site) • Some of this is electrical energy used in drives and in running vacuum pumps and stock pumps (for moving fluids) • But steam used in drying the sheet is the biggest energy consumer • Water content of the sheet:-when sheet is just formed, 99.1% is water ...

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  • PAPERMAKING - PAPTAC

    differences in the speed of the jet and the fabric speed (termed "rush" or "drag") will induce a strong degree of alignment in the fibers. This will cause a directionality in paper properties so that the tensile strength, for example, will be much greater in the machine direction of the paper than in the cross-machine direction.

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  • Improving Paper Machine Efficiency/Productivity .

    @article{osti_920308, title = {Improving Paper Machine Efficiency/Productivity through On-line Control}, author = {Aidun, Cyrus K}, abstractNote = {This project involves implementing a new technology, microforming, in a headbox to produce an isotropic sheet with significant reductions in the MD/CD stiffness ratio (increasing CD specific STFI) and improved sheet uniformity.

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  • Paper Sheet Formation Video - Convergence Training

    Paper Library Includes 97 courses for $1,499/year. ... If the wire speed is greater than the jet speed, the wire will "drag" the fibers in the machine direction. ... Define "jet-to-wire ratio" and "rush/drag" Describe the terms "rushing" and "dragging"

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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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