Scienta Quality Control System

Scienta QCS System for Resin Impregnated, Lacquer Coated and Specialty Paper

Scienta QCS System utilizes the latest measurement, data processing, and communication technology with advanced scanners to offer easy-to-use process control tools, which allow clients to maximize their process performance on paper or printing machines. Scienta QCS System is tailored to customers' specific requirements utilizing a modular hardware designs. All components are based on open standards to ensure affordability and to guarantee future flexibility. The System is designed and solidly built to withstand heat, dust, resin, etc. and relies on 50 years of measurement experience. Data from the QCS scanning sensors is processed with high performance 32-bit RISC processors to get the power needed to do real-time floating-point calculations in the sensor board.

Vits Systems GmbH and Scienta have worked together for many years to ensure a trouble free integration of the Scienta Online System into any existing or new Impregnation or Coating lines. The online measuring system is integrated into the production line mechanically through different web stabilizing solutions. The threading chain support is not a problem as the Online scanners have been designed to pass the threading chain bracket.

The Online measurement is automated as much as possible to take into account web breaks, paper splices and emergency situations. All electrical connections between the production line and the Online system have been implemented and thoroughly tested over the years. Even the Operator Panel functions can be integrated into the line displays as Scienta uses the same hardware components used in the production line.

Optimizing the production process with accurate sensor technology
Scienta offers accurate Basis Weight measurement technology based on Beta radiation absorption, precise moisture measurement based either on microwave technology or on absorption of near infrared light (NIR). Measuring using microwave technology is based on the dielectric property of materials. Water has a much higher dielectric constant than cellulose.

The proportion of moisture in the paper sheet will therefore be strongly reflected in its dielectric constant. In NIR technology water molecules have a property to oscillate at certain known wavelengths. NIR light contains these wavelengths. When light is transmitted through paper, NIR light is absorbed by the water molecules contained in the paper in proportion to the amount of water there is. Addition to above basic measurements, Scienta offer Corundum content measurement utilizing Ash Sensor technology through gamma radiation absorption. Ash Sensor is a double-sided measurement using gamma rays (either as a natural source or from an X-Ray tube) detected by a Scintillation detector. As the Gamma detector is more sensitive to hard substances (like Corundum), the Ash Sensor can be used to selectively measure abrasive additives in Liquid Overlay or similar products. The Ash sensor is naturally also sensitive to any ash residing in the raw paper.

Manufacturer: Scienta Oy; Jorvas, Finland; http://www.scienta.fi

Technical Specifications:

Construction
160 x160mm (6.3in. x 6.3in.) electro plated I-beam steel construction bolted onto 20mm (0.8in.) thick end plates.
Physical Dimensions
Scanner Width: 6800mm (268in.) max
Beam Width: 6000mm (236in.) max Machine-Direction: 372mm (1 4.6in.)
With three sensors at 0º pass angle: 600mm (23.6in.) Scanner Height: 11 70mm (46in.)
Weight: 1 000kg plus 1 00kg/m
(2000lbs plus 1 00lbs per ft)
Maximum Sheet Width 5100mm (200in.)
Scanning Speed
Scanning speed is governed by an inverter assuring smooth operation of the heads. Normal scanning speed is 100-200mm/second (4in./second).
Head Positioning
The heads use web edge detectors to seek out the web and automatically adjust for width and web position changes.
Single-Point Positioning Accuracy + 3mm (+ 0.12in.)
Maximum Ambient Temperature 55ºC (1 30 F) standard
Power Requirement
110-230 VAC, 50/60 Hz, 1 kW
Drive Belt
Steel reinforced polyurethane timing belt
Scanner Drive120 W AC motor with heavy duty tooth wheel gear box.
Guiding system
10 large diameter 80mm (3.1 5in.) neoprene covered wheels supported by a machined and tempered I-beam.
Instrument Air
6 bars (90psig) oil free (0.01 µm filter) 1 00 l/min.
s steel guides.