Web offset printing
Transcription
Web offset printing
Web offset printing Roll & Web Handling Drying & Emission Control Technologies Engineered Systems & Services w w w. m e g t e c . co m Roll and Paper Handling MEGTEC’s splicers feature core breaking and tension control, simultaneous cut and paste under tension with a constant short tail length, easy roll loading, independent drive and PLC control. A choice of automation levels and load bearing versions are available. MEGTEC also supplies zero speed splicers. The MEGTEC MP splicers are the new highly modular generation of high performance core-driven splicers. Their compact design and lowest possible height is ideal for limited space requirements, especially in newspaper printing. All MP models feature core acceleration. The new roll is accelerated by an AC-motor from the center of the roll. This process improves control and eliminates contact with the paper surface and potential damage. The straight continuous splice preparation is simple, avoids the creation of air-pockets and provides better handling of damaged out-of-round rolls. MP11: Core chucks, core acceleration and braking The MP11 is a match-speed splicer, designed with a focus on multi-web single wide newspaper printing presses. Motorized chuck insertion and automatic expansion increase operating efficiency and safety. Roll loading is by a push button for chuck engagement with automatic tightening at the end of insertion. The MP14 is a match-speed splicer, designed for multi-web single wide commercial printing presses. It is capable to carry roll weight up to 1,700 kg. Core braking by 4-Quadrant motors gives high responsive drive and braking which provides a constant web tension irrespective of variation of press speed. The MP22 is a match-speed splicer designed for double wide, high production newspaper printing applications. It is capable to carry newspaper rolls up to 1,720 mm (67 inches) wide with a roll diameter of 1,270 mm (50 inches) and is available with load bearing option. MP14: Quadrant core acceleration and braking Model Code Product Name Engineering Spec Application TYPE Roll-Weight WEB width MP1_: single MP_0: shaft 10: 1000 kg 1012 mm MP2_: double MP_1: 1-Q 17: 1700 kg 1280 mm MP_2: 2-Q 1720 mm MP_4: 4-Q MP101000 1012 MP241700 1720 MP11-1000MP11-1400 MP14-1700 MP22-1700 Maximum running & splicing speed 12.7 m/s (2500 fpm) 12.7 m/s (2500 fpm) 14.5 m/s (2850 fpm) 14.5 m/s (2850 fpm) Maximum roll weight 1000 kg (2200 lbs) 1700 kg (3750 lbs) 1700 kg (3750 lbs) Maximum roll diameter 1270 mm (50 inches) 1270 mm (50 inches) 1270 mm (50 inches) 1270 mm (50 inches) Minimum splicer diameter 450 mm (18 inches) 450 mm (18 inches) Maximum web width 1020 mm (40 inches) 1020 mm (40 inches) 1020 mm (40 inches) 1720 mm (67 inches) Standard web tension range 100 - 250 N 1400 kg (3100 lbs) 100 - 250 N 450 mm (18 inches) 80 - 250 N 450 mm (18 inches) 80 - 400 N The DLP-K is a match speed splicer which has been designed and configurated to exactly match the requirements of fast-running single wide newspaper presses. It is available in 1020 mm (40”) web width only and allows to run rolls up to 800 kg (1760 lbs). The DLP-K splicer features: • PLC tension control with pneumatic dancer arm • Dual pneumatic brakes on each arm with web tension control from roll core • High speed single belt acceleration • Motorized individual roll alignment prior to splice • Splicer carriage with pneumatic activated knife and roller • Roll loading directly from floor into arms • Loading and unloading on same side • V T515 Operator screen display and local push-button control panel • Remote control of sidelay, web tension and brakes The DLP-K splicer is modeled after the successful DLP series which has sold more than 1,000 units worldwide and is now manufactured in Shanghai. The MEGTEC SE Zero Speed Splicer provides an easy way to improve quality, maintain maximum productivity, and ensure minimal core waste. The splicer features innovative components such as an automatic splice trigger, accurate web tension control, and dual unwind. It accommodates two full rolls of paper, each up to 1270 mm (50”) in diameter. SE splicers are available in CE, UL standards to meet compliance in various regions. DLP-K SE Maximum running & splicing speed 11.6 m/s (2280 fpm) 7.6 m/s (1500 fpm) Maximum roll weight 800 kg (1760 lbs) 1588 kg/ 3500 lbs) Maximum roll diameter 1270 mm (50 inches) 1270 mm (50 inches) Minimum splicer diameter 550 mm (22 inches) Maximum web width 1020 mm (40 inches) 1020 mm (40 inches) Standard web tension range 100 - 400 N 88 - 266 N Drying and Emission Control Technologies Integrated Air Flotation Dryer and Oxidizer for High Performance Commercial Printing The Dual-Dry TNV is the proven answer to the demanding needs placed on heatset printers by the increased use of light-weight paper, uncoated paper, heavier ink coverage, lower web tensions, higher press speeds and ultra-side web widths. These parameters all require superior web handling and process efficiency. Performance Benefits of Dual-Dry TNV • High quality printed products with low waste • Dual-Dry system for high lateral web stability without web touching • Proportional length of each zone for maximum process quality • Integrated oxidizer for VOC (Volatile Organic Compounds) environmental compliance • Low energy consumption with 65% efficiency exchanger and optional Exhaust Reduction System ERSplus • Digital exhaust control • Automatic paper temperature control • PLC with diagnostic assistance and modem • High reliability and low maintenance • No condensate formation in the dryer, marking on chills or folder • Minimum number of components, standard commercial burner Dual-Dry air nozzle system combines two air bars, one dedicated for web handling and the other for heat transfer. Semi-Commercial Heatset Package MEGTEC’s semi-commercial package will offer web press manufacturer and printers alike an economic package with local manufacturing in China which will bring new business opportunities and cost savings to publishers and printers in today’s evolving media industry. It also allows printing houses to produce a wide variety of work including newspapers, coated advertising inserts and magazines in high quality which is in high demand from readers. The hybrid configuration will include zero speed splicer, heatset dryer, infeed and chill stand (shaftless), web guide and silicon coater for high print quality jobs. • COANDA ColorPlusTM dryers feature reliable and low maintenance, low operating costs, easy to use and trouble-free design, temperature control and a heavy duty construction. • MEGTEC Infeed: A compact, closed loop infeed system which give precise web tension control to maintain accurate register and reduce waste. • The MEGTEC Web Guide: a compact, state-of-the-art digital controller which meets the most demanding needs of any printer. • MEGTEC Chill roll stands cool the printed webs, after drying, and prepare it for finishing and folding operations. • The MEGTEC Silicone Coater applies a thin film of silicone to the moving web, eliminating web static electricity and helps prevent marking of the web by downstream equipment. Air Pollution Control Technologies (RTO) Thermal oxidizers are the industry standard for achieving clean air compliance in heatset printing. MEGTEC, world leader in providing clean air compliance for heatset web printers, offers a major innovation in low flow regenerative thermal oxidation with the Millennium Regenerative Thermal Oxidizer. This unique, compact system can meet the needs of a wide variety of industrial applications at flows extending to 23.700 Nm3/h (15,000 SCFM). The MILLENNIUM provides the efficiency, effectiveness and reliability of RTOs at affordable capital, installation and operating costs. The MILLENNIUM features: • Compact and cost-effective design with integrated ductwork, unique singlebox configuration • Money saving media with low resistance ceramic heat exchange media minimizes pressure drop for smooth operations and reduced electrical operating costs • Exceptional fuel efficiency even at low solvent concentrations, the system can sustain thermal conditions with the heat released during VOC oxidation, requiring no additional fuel for VOC destruction; • Regulatory compliance • Fast and easy installation since the system is preassembled, prewired, prepiped and pretested at the factory • Secondary heat recovery available for applications where higher solvent loading yields more heat than is needed to sustain oxidation. The recovered energy can be returned to process applications or used to reduce other plant energy requirements. Millennium RTO Flow capacityUp to 23.700 Nm3/h (15,000 SCFM) VOC destruction 98-99 % Thermal efficiency 95 % System fanForce draft w/VFD Optional secondary Yes heat recovery Heat exchange media Ceramic Worldwide Presence Global Service, Parts Support & Regional Locations Regional Locations ✦ Global Headquarters Manufacturing ✦ Regional Headquarters Engineering De Pere, WI Columbus, OH • Regional Parts, Service Service Standish, UK Maidenhead, UK Åmål, Sweden Göteborg, Sweden Maintal, Germany Evry, France Ingre, France Vero Beach, FL Pune, India Shanghai, China Melbourne, Australia MEGTEC Systems Shanghai Ltd. 2,300 sqm facility located at No. 125 Lane 1190 Jiujing Road Jiuting Town, Songjiang District Shanghai 201615 3 AMERIC AS C orpor a te H e a d q u a rters MEGTE C S y s t e m s , I n c . D e P e r e , W I , US A Te l e p h o n e : + 1 9 2 0 3 3 6 5 7 1 5 Solvent Recovery Division MEGTE C S y s t e m s , I n c . 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