ACA Scan

Automated online porosity scanner – for roll to roll data

ACA Scan is a compact and intelligent scanner platform designed for automated porosity and permeability measurement on moving web. It delivers real-time CD (cross direction) and MD (machine direction) profiles, complete with visual color maps, giving you reliable roll-to-roll data for continuous quality control – without manual effort.

Ideal for small to medium-sized production lines, ACA Scan is most commonly used with the ACA Permi sensor for online porosity measurement.

Key Benefits of ACA Scan

Fully automated operation

ACA Scan performs porosity measurements without manual intervention. The system runs automatically, providing consistent, real-time data for quality control and process optimization.

Flexible and fast scanning

The scanning speed can be adjusted to match your production process. This ensures optimal measurement performance across different line speeds and product types.

Compact and lightweight design

Designed with space-saving in mind, ACA Scan features a light mechanical structure that fits seamlessly into existing production lines – even in limited spaces.

Quick installation and easy maintenance

ACA Scan is built for hassle-free deployment. Installation is fast and straightforward, and the automatic cleaning cycle minimizes maintenance needs, ensuring long-term reliability.

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Key application areas

Paper & Board

  • Up to 80% of coating quality is determined by the properties of the base paper. ACA Permi enables real-time monitoring and control of base paper porosity and uniformity – helping to improve coating performance and significantly speed up grade changes.

  • Uniform roll and sheet formation is essential for excellent print quality. Since formation and air permeability are closely linked, ACA Permi helps optimize both in real time—improving runnability and accelerating grade changes.

  • Air permeability is the single most critical property in sack kraft paper. If it is too low, the sack won’t breathe during filling; if too high, strength may suffer. ACA Permi ensures optimal porosity to balance airflow and mechanical strength.

  • High strength in kraft paper is achieved through refining, which is directly linked to porosity. ACA Permi enables real-time monitoring of porosity to optimize refining processes. Customers report less variation, improved strength, and reduced energy costs.

  • Porosity affects key properties such as tar levels, taste, combustion temperature, and filtration. ACA Permi maintains air permeability (e.g. 30–50 CU) at target levels efficiently, saving both time and material during grade changes.

  • Uniformity is critical for impregnation and consistent image quality. ACA Permi provides online control of base sheet air permeability, helping to improve the quality of the end product in decorative laminates.

  • Filtration performance depends heavily on media consistency. ACA Permi performs roll-to-roll porosity profiling and detects even the smallest variations. It measures over 10,000 points per roll in real time, ensuring consistent quality and saving time during production.

  • Strength and visual appearance in packaging board rely on consistent formation and porosity. Air permeability correlates directly with board strength and printability. ACA Permi supports accurate quality control and helps reduce energy use during refining.

Nonwovens

  • Waste from broke is costly, especially in glassfiber production. ACA Permi shortens grade change times by 15–50% through real-time control and improves uniformity in critical end-use applications like filtration.

  • High-performance nonwovens require a consistent structure throughout the roll. ACA Permi analyzes more than 10,000 data points per roll to ensure advanced quality assurance, which is essential for stable converting and end-use performance.

  • Filter efficiency depends directly on the consistency of the media. ACA Permi ensures correct air permeability and pressure drop across the entire roll, while also helping to speed up grade changes and enhance overall filtration performance.

  • Lightweight and strong nonwovens require stable structural quality. ACA Permi detects permeability variations that can affect strength, ensuring better durability and reduced variability in the end-use application.

  • Additives used in production can clog felts and reduce the life of machine clothing. ACA Permi enables early detection of airflow blockages in felts and wires, helping to extend their service life. Customers report fast return on investment, especially in airlaid processes.

Films & Engineered Materials

  • Air permeability—typically measured in Gurley units—is a key property of battery separator films. Uniform porosity is essential for long cycle life and electrical safety. ACA Permi measures Gurley-equivalent values inline with high correlation and provides real-time roll profiling with 5,000 to 10,000 data points per roll.

  • Uniform breathability is crucial in applications such as diapers and food packaging. ACA Permi offers continuous control over breathability and roll consistency, which enhances both product performance and manufacturing efficiency.

  • Membrane films are used in high-end filtration applications, where quality must be precise. ACA Permi monitors air permeability roll-to-roll to ensure consistent membrane efficiency. It helps keep specifications within target and reduces time and costs during grade changes.

Sales & support

Alongside our industry-leading analyzers, we offer a full range of services—from installation and configuration to long-term maintenance and modernization. Whether you’re starting up a new line or optimizing an existing one, our team is here to help.

We’re always ready to explore the right solution for your specific needs—and if it doesn’t exist yet, we can help develop it. Custom applications are part of what we do best.