GL&V

The BTF™ Hydraulic Headbox System is designed to optimize the performance of all fourdrinier machines: low speed, high speed, light weight, heavy weight, single-ply, multi-ply, coated and uncoated. It is without parallel in its ability to develop tensile ratio, fiber orientation, and sheet formation. Our lamella-equipped nozzle design eliminates tiger stripes, for improved formation and sheet surface appearance. The added adjustability of our edge flow control can help optimize fiber orientation profiles for all flow conditions. The BTF Headbox is designed to assist in control of tensile ratios to optimize sheet strength. The BTF™ Headbox System is comprised of three Modules: The Central Distributor; the Dilution Profiling Device; and the Headbox. Implementing just two of these Modules allows conversion of your existing conventional slice lip warping Headbox into a Consistency Profiling Headbox. This conversion permits independent control of CD basis weight and fiber orientation while providing exceptional dimensional sheet properties as well as energy savings. With almost 200 BTF systems in operation around the world, this modern technology has arrived. Full 316L Stainless Steel fabrication (optional materials available) Electro polished wetted parts Durable, robust, proprietary hose materials and interior finish provide a service life of 10+ years Zero recirculation required from the fan pump, alleviates +- 10% flow load from your existing fan pump Polycarbonate, graphite and CPVC lamellas available Precise, repeatable adjustment on Headbox controls and dilution valves Outstanding pulsation elimination capacity Compact, highly effective and efficient dilution system Excellent, narrow control of CD basis weight profile Superior sheet edges Wider saleable sheet potential Fast grade change Excellent control of fiber orientation Excellent control of tensile ratio Improve paper properties, formation, drainage and caliper Exceptional flow range capability Eliminates header recirculation from the fan pump Greater grade mixproduct mix capability Improved CD control permits better CD caliper which can improve pressing and drying efficiency

Three basic body designs cover the full range of applications. These units usually follow Hydrofoils on the table and drainage can be up to three times greater by the use of an external vacuum source. To deal effectively with the wide variety of conditions GL&V manufactures a comprehensive range of standard units with different numbers of blades and blade spacing so that the optimum layout can be obtained for any given machine. GL&V Vacufoil™ The Vacufoil technology is a dewatering device consisting of a sealed stainless steel foil box upon which a number of foil blades can be mounted and an external vacuum applied. GL&V Multi-Purpose Drainage Unit The Multi-Purpose Drainage unit (MPD unit) is intended for use where stock conditions, grades or speeds vary and drainage capability needs to be tailored to the dewatering demands. The MPD unit is constructed similar to a Vacufoil with a waterfall outlet. When vacuum assistance is not required the unit can be isolated and run as a normal Hydrofoil. If higher turbulence is needed, alternate blades can be replaced with control blades to actively induce micro-turbulence. GL&V TwinVac and EnerVac™ Water removal is a function of both the amount of water in the sheet and the vacuum applied. By dividing the unit into two sections, each with its own independent vacuum level, we achieve optimum water removal rates across the unit. This way, up to 50% more water can be drained by the unit compared to a conventional Vacufoil, while drag load is reduced resulting in lower energy demands. The Twin-Vac design has blades at a constant pitch across the two sections of the unit. The EnerVac™ technology operates at higher vacuums and has blades at different pitches across the two sections of the unit. The Enervac design offers a versatile dewatering system that provides improved sheet quality and economical operation. The unit is specifically designed to reduce energy consumption and improve drainage versatility. All units are made from corrosion resistant AISI 316L stainless steel. GL&V Vacufoil™ Minimal deflection from internally stiffened rigid structure Easy vertical and horizontal adjustment Units are designed to accept plastic or ceramic blades GL&V Multi-Purpose Drainage Unit Triple mode design–adaptable to suit various conditions GL&V TwinVac and EnerVac™ Sheet is not exposed to atmosphere between sections–so water cannot migrate back into the sheet Independent control of vacuums allows for precise sheet moisture control

The GL&V Forming Boards are custom designed to fit your machine and suit any application. They are engineered to suit the particular geometry between the breast roll, slice and machine rails for your specific paper machine. All units are made from corrosion resistant stainless steel to specification AISI 316L. Internally stiffened rigid structure Integral stainless steel support plate for leading blade Vertical and horizontal adjustments Fine-tuning of horizontal position with adjuster pad Units are designed to accept plastic or ceramic blades Optional GL&V Variboard Mechanism MD location adjustability to conform to the jet impingement MD movement synchronization via cross shaft with indicator plates Vertical adjustment Units are designed to accept plastic or ceramic blades

Top Former units are designed to improve sheet quality, formation, smoothness and two-sidedness by drainage from the top side. High impulse from blade forming to enhance the formation and gentle low-energy dewatering through roll forming are offered in the top former units. C Former™ - Flexible combination of blade and roll forming, providing excellent sheet improvement at low-energy consumption in vacuum and drive requirements. V-Former™ - Vacuum assisted inverted dewatering forming shoe. For high speed operation and increased dewatering capability. Complete safety audit for guarding and safe operation Solid 316L and steel 316L Clad construction Modular and cantilever unit for ease of installation on existing fourdrinier Accessibility for proper operation Adjustability to optimize sheet property Improved formation Improved two-sidedness Improved smoothness Flexible operation Low vacuum consumption and drive HP for the C-Former™ system High speed and drainage capacity for the V-Former™ system

GL&V is the world leader in oxygen delignification, having supplied over one hundred forty medium consistency oxygen delignification installations worwide. Oxygen delignification has been done in several ways, high consistency, meduim consistency, one stage or two stage. The state of the art design today is the GL&V DUALOX® system which delignification with oxygen is primarily intended to facilitate your next stage of the process, i.e. bleaching. More effective delignification enables you to reduce the use of hazardous and expensive chemicals in the bleach plant. The GL&V patented DUALOX® design with a short retention time pre-reactor followed by a booster pump and a second stage 60 minute reactor. This concept offers to enhance performance of a two stage system with a lower investment cost. The oxygen delignification system is of the GL&V patented DUALOX type in two-reactors. The process was designed using reaction kinetic equations, which were translated into a mill context. The equations state that the oxygen delignification process proceeds via two different phases, a very rapid initial phase and a slow final phase. As a consequence, the retention time is divided unequally between the two reactors, with a short retention time of 5-10 minutes designed in the first reactor and a longer retention time of 60 minutes in the second reactor. The temperature in the first reactor is kept at a lower level to treat the pulp more mildly here in order to retain as high a final viscosity as possible. In the second reactor a higher temperature to ensure that the desired outgoing kappa number is reached. In this second kinetic phase the temperature does not affect the selectivity of the process meaning that the temperature level does not compromise the high final viscosity. The pressure is kept at a high level throughout the whole of the system in order to make the oxygen dissolve easily stay in solution for as long as possible. In order to maintain a high pressure in the second reactor apart from a mixer also a booster-pump is placed between the two reactors. This way the pressure is increased to a high level again. The DUALOX system is a compact two-reactor oxygen delignification system setting a standard for the state-of-the-art technology. It allows a high delignification degree to go hand in hand with a good selectivity. Extended delignification feasible More selective delignification A simple design Optimum conditions for the delignification process Flexibility to adjust pressure and temperature in both reactors

GL&V offers a complete family of fourdriner forming sections, either in single or multiple ply versions. All components are offered from drainage equipment, structural components, rolls and suction rolls, stretchers and guiding system, breast roll lowering system, doctoring and showering. Customized approach for rebuild permits the review of existing fourdrinier; in some instances by lengthening the forming section to accommodate higher production levels or improvements in the sheet properties for machine with marginal forming length. Modernization of the structural components to permit a more efficient wire change by converting to porter bar, cantilever or C-frame arrangement, or simply replace corroded structural members. Complete safety audit for guarding and safe operation Full 316L Stainless Steel fabrication or Steel with 316L clad Porter bar, Cantilever or C-frame arrangement Heavy duty construction 316L complete save all system for proper white water collection Complete walkway system for accessibility Safe and clean operation Corrosion free construction Facilitate and minimize wire change time Accessibility for operation