Quality Control System for your demands

The OnQ ModuleSteam controls the moisture cross profile in the press. It brings about high dry content, good moisture cross profiles and improved threading in the dryer section.
High runability and clear production increases are the outstanding advantages of the OnQ ModuleSteam steam box. With especially easy maintenance, it offers an extraordinary potential to increase dry content and profiling due to its vaporization zones. By vaporizing the paper web and lowering the water’s effective viscosity in the stock, the OnQ ModuleSteam steam box increases the effectiveness of the press nip.

Due to its small space requirement, it can be easily retrofitted into an existing press section. The design principle of the OnQ ModuleSteam steam box allows the smallest widths of the profiling zones.

With its innovative nozzle and valve technology, the OnQ ModulePro nozzle moisturizer delivers an optimal moisture cross profile over the entire paper web, ensuring smooth processing to the reel.
OnQ ModulePro with Profilmatic MP moisture cross profile control delivers optimal moisture results, even for simultaneous treatment of moisture cross profile, total moisture and curling. An optimal spray angle and ultra-fine drops of water produced by a finely atomizing dual-substance nozzle provide for uniform water absorption over the entire web. Higher quality paper at the reel or before the calender or coating unit improves winding at the reel, reduces breaks and allows a lower dry content at the reel or higher web speeds.
Depending on the installation location, OnQ ModulePro is used for moisture cross profiling, curl reduction or remoistening.

Poor moisture profile and unwanted marks in the paper are often the results of defective nozzle moisturizers. Since the replacement of the complete system is associated with high investment costs, this occurs only rarely. To counteract this problem Voith developed the V30 upgrade nozzles: Here you just have to replace the air-atomizing nozzles instead of completely replacing the nozzle moisturizer. This will give you a much finer spray pattern over a larger volume range compared to competitors’ nozzles, as well as a better paper quality due to a finer mark-free spray application.
Nozzle replacement is easily done by screwing out the old mouthpiece of the nozzle and screwing in the new V30 upgrade nozzle from Voith. Both the spray beam itself and the control remain untouched. Replacement of the nozzle requires a detailed technical check in advance.

The OnQ ModuleJet is an automatic control system that consistently ensures the highest quality of the basis weight cross profile in headboxes with dilution water technology.
Control of the basis weight cross profile with OnQ ModuleJet is done by adjustment of the dilution water valves that are arranged over the machine width through the actuator system. The inflow of dilution water is exactly dosed by means of precise linear movement. In combination with the Profilmatic control software, the OnQ ModuleJet actuator system guarantees uniform basis weight cross profiles and provides for short engagement times after malfunctions. The optimal valve position is calculated by Profilmatic with the aid of various algorithms and adjusted by the actuator system.

The OnQ ModuleJet actuator system is used in headboxes with dilution water technology for cross profiling.

Installing OnQ ModuleTap actuators ensures the highest consistent quality of the basis weight cross profile in headboxes with dilution valves (ball valves).
With OnQ ModuleTap, a consistently high basis weight profile quality is guaranteed by means of a rotary motion (0-90°) on the basis of the profiles measured. The combination of Profilmatic control software and the OnQ ModuleTap actuator system provides good and stable basis weight cross profiles and short engagement times until reaching the guaranteed quality values after downtimes, grade changes or breaks.

OnQ ModuleTap is used in headboxes where dilution water dosing is carried out via ball valves. The automatic control system is especially suitable for retrofitting headboxes from various manufacturers that have no dilution water system.

The OnQ ModuleStep actuator controls the cross profile of the grammage. Simultaneous adjustment of all actuators ensures good control dynamics and clearly improved profile quality.
Control of the cross profile with the OnQ ModuleStep is done through mechanical profiling by zones of the headbox aperture, using stepper motors. The resulting contoured headbox outlet corrects the cross profile in the desired manner. The adjusting unit - consisting of stepper motor, gears, micrometer and hand wheel - was specially designed for the harsh environmental conditions in the paper and board industry. Adjusting increments of 0.6 micron ensure good control quality. Each actuator includes an integrated status and diagnostic display. The actuator adjustment is precisely measured by means of position, protectingthe aperture of the headbox from damage.

OnQ ModuleStep actuators can be installed on all headbox types. They are especially suitable for retrofitting older headboxes.

OnQ ModuleCoat is used for coat weight cross profile control on blade coating units and OnQ ModuleSpeed for coat weight cross profile control on film coating units. Both systems ensures uniform distribution of the coating color in machine cross direction.
Cross direction control with OnQ ModuleCoat / OnQ ModuleSpeed takes place via adjustment by zones of the profiling device. For this, the actuator is equipped with an incremental and absolute encoder. The additional position feedback provides absolute reliability for protection of the profile rail. The auto-mapping function of the Profilmatic control automatically checks the correlation between actuator position and measurement position in the paper web. This allows uniform distribution of the coating color. The "mapping model" adjusts to the measured change.

OnQ ModuleTherm is suitable for the control of the thickness profile on the calender for all calender types and all paper and board grades. With OnQ ModuleTherm, profiling is carried out by tempered air.

Due to the technical performance spectrum, the Unterkochen team decided to modernize the quality control technology with the ComCore QCS system by Voith Digital Solutions. ComCore is an automation platform developed specifically for the paper industry. It comprises digital assistance, measurement and control systems that can also be expanded with the OnEfficiency and OnCare product families.