Obtain a uniform nip impression for roll setup, maintenance, consistency, and longevity
Taking routine nip impressions can help identify:
- Nip pressure and uniformity
- Roller alignment
- Proper machine setup
- Crowning (under- or over-crowning)
- Diameter variations
- Deflections
- Blanket & surface wear
Nip Pressure Measurement Options
Fujifilm Prescale™ Film
single-use nip impression paper
Also known as nip impression paper or a Fuji impression, Prescale film is used to measure pressure between nip rolls and calender rolls.
- Snapshot pressure measurements
- Visual pattern of peak pressure
- One-time use
I-Scan™
multi-use nip pressure measurement system
A powerful, versatile tool that accurately measures and analyses dynamic contact pressure between rolls.
- Used to understand full surface area of the nip
- Over 200 sensors to choose from in different shapes and pressure ranges
- Real-time display of pressure sensor data
NPAT™
advanced nip pressure alignment tool
The NPAT™ captures nip footprints and relative pressure distribution between nip rolls.
- Used to measure pressure distribtion, nip width, and cross width across rolls
- Clear visual representation of rolls using static snapshots
- Ideal for large nip roller areas
Comparison of Nip Impression Systems
FujiFilm Prescale (“Nip Impression Paper” / “Fuji Impression”)
Nip impression paper is used to measure contact pressures and is as easy as passing the film through the nip rollers. The film structure consists of micro-encapsulated colour forming and developing material. When pressure is applied to the film, a red colour impression is formed in varying density according to the amount of pressure and pressure distribution.
Main features
- Film is available in rolls and can be cut to size
- 7 available pressure ranges up to 30,000+ psi
- Peak pressure snapshot
- Optional digital analysis software
I-Scan™
I-Scan is a versatile solution for optimising a process or manufacturing parameters. The I-Scan nip impression sensor is placed in the nip for real-time roller pressure measurement. With a wide range of sensor form factors and data analysis tools in the software, I-Scan is a powerful tool for a research and development team to improve yield.
Main features
-
Ideal for engineering team analysis
- Recording & playback of dynamic pressure images
- Fast (100 Hz) sensor scanning
- Supports high-temp sensors
Nip Pressure Alignment Tool™ (NPAT)
NPAT is an advanced, easy-to-use tool used to capture nip footprints and relative pressure distribution between nip rollers. The system utilises a sensor made up of an array of thin and flexible pressure-sensitive bands, which can be configured to match the size of an application.
Main features
-
Helps prevent equipment and product damage
- Provides quantifiable and credible data
- Easily maintained in the field
- Allows for proper machine set-up, machine comparison, and preventative maintenance
