VALMET OY . Soft calender roll cover Valmet Calender Roll Cover CPU Cleaning Washing with plain or soapy water or a sodium hydroxide solution is recommended. OptiCalender Metal belt’s dwell time is 4-15 times longer than with a shoe nip calender and 100 times longer than with a conventional soft nip calender. Our calender roll cover product line offers an extensive cover choice for all application requirements. Valmet's suction roll seals are marketed under the brand name Valmet Seal Strip Flex*. CALENDER ROLLS. A calender comprising a plurality of superimposed hard rolls and a number of soft rolls arranged to load laterally a plurality of these hard rolls. With aqua cooling technology, pilot-type conditions are brought to production-level, by cooling down the web before the calendering nip. Valmet roll services; roll maintenance, roll covers and new rolls improves production efficiency and increases roll run times in papermaking. A calendering method and calender in which a web material is passed through a calender, the calender being defined by two rolls having resilient roll coatings and being loaded towards each other so that due to the resilient nature of the roll coatings an extended nip is defined. See Valmet roll cover selection. This auction is live! At a hardness of 91 ShD, the cover is less stiff than other covers of the same hardness. medium calender loads and speeds. Valmet Calender Roll Cover CL-EC is suitable for supercalender polymer, calender DC and calender intermediate/polymer roll positions. But the durability of the cover has not suffered, making this the ideal cover for modern multi-nip calendering conditions. Combining highest wear resistance with the best load-speed durability, this cover gives the longest regrinding intervals under the most difficult calen-dering conditions. OptiCalender Multinip calendering. Valmet Calender Roll Cover Eco Cover color Hardness Cover thickness Transient temperature Surface roughness Maximum loading Green 90 ShD 12.5 & 15 mm (0.5 & 0.6") 120°C (245°F) 300 kN/m (1,650 pli) Ra < 0.6 µm (< 25 µin) Eco For economical soft calendering ŸAll-round soft and supercalender cover with good wear resistance and good surface You need to be registered and approved to bid at this auction. Valmet's roll maintenance solutions consists of maintenance, reconditioning and upgrade services to improve tissue machine's runnability and reliability. Manchester 2-Roll Hard Nip Calender Stack, 194"x36" Diameter Top Roll, 194"x22.5" Bottom Controlled Crown Roll with Impact Systems Thermal Profiling, Chilled Iron Top Roll, Spare Rolls ... Valmet Damatic XD Scanners for Weight/Caliper/Coating Weight . Valmet – OptiCalender Metal Belt The secret behind OptiCalender Metal Belt calender lies in two factors; an extremely long dwell time and the most effective plasticization. Independently Driven Roll Positions, 230-2570 PLI Roll Nips Loading Capacity. Valet OptiLoad 10-Roll Supercalender with 299" Web Width On-Line For 28-40 Lb/3300 Sq Ft SC Paper Grades. Valmet’s multinip calender is used both in off-line and on-line applications. The paper rolls 3a and 3b and the top and bottom hard rolls 1a and 1b may have the construction of known Kusters rolls. Valmet is the first company in the world to offer roll covers based on biomaterials and recycled materials for board, paper, tissue and pulp making. A paper machine (or paper-making machine) is an industrial machine which is used in the pulp and paper industry to create paper in large quantities at high speed. The soft rolls are arranged in pairs formed by two soft rolls opposite each other at both sides of the same hard roll. It can lead to great improvements in line profitability. Valmet's roll grinding service with 3D measurement: longer roll running times and minimal vibration for board and paper making. Profiling performance is affected by the number of control zones on deflection compensated bottom and top rolls. It's long delivery list shows it to be a favourite for many calender processes. Reel . Fig. A Benefits Valmet Calender Roll Cover CPU Cover color Hardness Cover thickness Maximum It is available in a wide range of hard-ness, from 89 to 92 ShD, to suit all types of calender processes, from today's soft calenders to traditional supercalenders and modern multi-nip calenders. These new composite covers for press, guide and calender rolls are now available for the first customer deliveries. Other Classes: 100/173 . Watch the auction as a guest You have been outbid. For the best chance of winning, increase your maximum bid. A … Valmet Calender Roll Cover Eco Cover color Hardness Cover thickness Transient temperature Surface roughness Maximum loading Green 90 ShD 12.5 mm (0.5") 120°C (245°F) 300 kN/m (1,650 pli) Ra < 0.6 µm (< 25 µin) Eco For economical soft calendering ŸAll-round soft and supercalender cover with good wear resistance and good surface US5806415A US08/852,107 US85210797A US5806415A US 5806415 A US5806415 A US 5806415A US 85210797 A US85210797 A US 85210797A US 5806415 A US5806415 A US 5806415A Authority US United States Prior art keywords rolls relief valves roll hydraulic Prior art date 1996-05-06 Legal status (The legal status is an assumption and is not a legal conclusion. e cover has been designed for spe-cial soft calendering processes. Includes Symcd/HP Polymer Covered Multizone-Controlled, Deflection Compensated Rolls Top … The purpose of a calender is to change the surface properties and caliper profile of paper so that they are better suited for the requirements of the printing method and further processing. For the highest quality coated paper, Valmet offers a full range of roll covers for coating process in paper making. These properties are imparted to the paper by calenders, which are equipped with up to 15 rolls. Benefits. The calender 10 is a vertical calender with four rolls, comprising a calender frame 11,12 on which four rolls 13,14,15,16 of the calender are mounted as a stack of rolls so that the rolls form three calendering nips N 1,N 2,N 3 between them. Abstract: An actuator (10a, 10b) for calender rolls (3, 4) in a machine calender connected on-line to a paper machine, wherein the actuator is situated between the calender frame (9) and support arms (11), which adjust the movable calender rolls (3,4), in order to load and unload the nips (N.sub.3, N.sub.2) formed by the calender roll (3, 4) in question and its counter roll (3, 2), and to … Valmet provides paper and boardmakers with a wide range of reels to match their specific needs and various reeling challenges. Valmet’s calendering technology provides innovative solutions for all paper and board grades. It is used as the standard seal material for all new suction rolls, and as a replacement for conventional seal strip materials in the case of older rolls. Therefore, the control of the deflection of the calender rolls and the control of the distribution of the line pressure at the nip defined between the filled rolls and hard rolls becomes difficult and complicated. Very durable hot spot resistant cover for the most severe calendering conditions, such as very heavy load and high speeds Ÿ ermo rolls ŸHard calender rolls Applications Valmet Calender Roll Cover CO is a very hard and very smooth roll cover for calender hard rolls. BELOIT/VALMET SUPER CALENDER ROLL WITH NEMATRON TOOLBOX2 CONTROL (CI) In World Class Offering of a Large Paper Mill. Pele Oy Valmet Aqua cooling calender With conventional roll nip, the best calendering results are achieved when the web is cool and stiff, like in pilot trials. Spinnaker is the North America Distributor for calender rolls from Leonard Breitenbach GmbH of Germany (website), a leading designer and manufacturer of calender rolls for paper machine calenders, super calenders, hot/soft calenders, and other paper manufacturing and finishing processes. Valmet Asset Manager is a web-based system which contains all critical roll-related information in one place. The roll nips in a resilient-nip calender are so-called soft roll nips, i.e., nips in which a hard roll forms a pair of rolls with an elastically resilient roll. Looking for composite, polyurethane, rubber covers or hard coatings for papermaking? From application engineering through casting, machining, shipping, installation and after sales service, Spinnaker and Breitenbach are your best source for calender rolls. The OptiCalender Multinip loading principle makes it possible to load all nips with the same linear load, resulting in efficient plasticization of paper in the very first nips. Primary Class: 100/162R. spreader roll, new tail threading plates, and calender loading and roll control modified. According to Valmet's dividend policy, the company aims to distribute at least 50 percent of the annual net profit in dividends. Valmet Calender Roll Cover CO prolongs the roll lifetime by preventing wear of the hard chilled layer. It features excellent resistance to all normal process and cleaning chemicals. The calender of the invention which is illustrated in FIG. Valmet's roll grinding services provide precise profile and roundness shapes for roll and cylinder surfaces for papermaking. The type of calendering technology applied is determined by machine process conditions like speed and web width as well as the paper or board quality desired. e cover may be wiped clean with an aliphatic hydrocarbon solvent. By letting Valmet help you in selecting the right reel for your grade, machine speed and web width, you can make full use of this potential. Valmet, 04 (FI) Primary Class: 100/162B. There is usually clear potential for improving production efficiency and line capacity in the finishing area. 2-Roll Calender . In Calender Roll Cover CJ, Valmet brings on the market a cover directed specifically at coated grades. ŸCalender deection-compensated rolls ŸCalender intermediate/polymer rolls Applications Valmet Calender Roll Cover CL is a family of roll covers for best performance in the calender. The calender is comprised of frame elements and equipment and rolls mounted on the frames. ŸCalender intermediate/polymer rolls Applications Valmet Calender Roll Cover CP is a tough cover for all paper grades. It pro-vides long regrinding intervals and high-quality paper and board production. Valmet Calender Roll Cover CPU is a soft calender roll cover that provides a long nip, good impact resistance and maximized bulk. Contacting with a heated thermo roll of calender, the softening point of paper surface decreases with moisture content, and a Valmet's new polyurethane materials offer a softer composite cover for demanding calendering conditions.
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