Digital Magazine

Measuring Roller Hardness

Hardness is defined as a material’s resistance to indentation when a static load is applied. There are a few different methods to measure hardness. This article refers to the 2 most commonly used in the roller industry.

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Surface Roughness of Rollers

Surface roughness plays an important role in determining surface COF (Coefficient of Friction), wear and release properties. The coefficient of friction often symbolized by the Greek letter µ, is a dimensionless scalar value which describes the ratio of the force of friction between two bodies and the force pressing them together.

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Specifying Precision Rollers: TIR & Taper

Tolerance requirements for rollers continue to become more stringent as quality demands for films and coatings increase. This is further driven by competitive pressures to save money on raw materials.

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Don’t Let Web Contamination Reduce Quality

Particles and fibers originating from the environment, product or processing line can be a concern for quality and customer satisfaction.

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KELVA Web Cleaning for Pharma and Medical Packaging

Dust-free packaging production in pharmaceutical and medical industries is a challenging goal to achieve.

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Why Web Cleaning?

Some facts about web cleaning that can make all the difference to your production.

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The Path to Sustainable Growth


COP26, NetZero, the UN SDGs – sustainability is one of the most critical issues of our time, and even in an era in which a global pandemic has dominated news headlines and legislative agendas, sustainability has remained near the very top of the agenda in business, politics, and the media.

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How a Full Lineup of Coatings Can Transform Packaging


Traditionally, packaging was developed and used primarily for functional purposes, allowing for the storage, transport and protection of everyday goods while only providing a little information.

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Troubleshooting Challenges on Press

The printing process can be complex and problems can sometimes arise. As a leading provider of inks, coatings and other pressroom supplies, Sun Chemical brings over 200 years of experience in the industry. Our experienced technical team has assembled a list of common printing challenges you could be experiencing and the solutions to each of those problems. Click on your printing process below to see the solutions to the printing challenges you may be facing.

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Methods and Design Considerations for the Application of Hot Melt Coatings
- Written by New Era Converting Machinery’s Tom Lombardo and Bob Pasquale.

As the use of hot melt coatings continues to grow and evolve so too have the operating parameters and requirements for applying these coatings. This article covers several of the coating methods currently used to apply hot melts, including a review of the typical operating parameters and conditions for each method. as well as the associated advantages or disadvantages. Additionally, we discuss the critical features that should be incorporated into the design of the application system. Though we touch upon the systems that are used to melt and deliver the hot melts to the coater, we do not cover them in any detail.

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Roll-2-Roll Sensor for Width Measurement and Monitoring

The Roll-2-Roll Sensor is more than just a sensor; it is a line scan camera with an integrated light source. Combined with the Roll-2-Roll Controller, the sensing system acts more like a machine vision solution but without the complexities of a typical vision system.

For the full article, please click here.

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