Uniform and skipfree quality with jet coating

OptiCoat Jet coating

OptiCoat Jet coating machine

OptiCoat Jet coating provides very uniform and skipfree coating quality. It gives the best possible surface smoothness compared to any other coating method. OptiCoat Jet coating station applies a surplus coating layer to paperboard surface with jet nozzles. The excess coating is scraped away by metering blade and returned on a return plate to the color collection pan. The desired coatweight is achieved by adjusting the angle or pressure of the blade. The impingement pressure is maximized with closed nozzle geometry.

Uniform coating quality

Fast start-up and web break recovery

Easy maintenance & operation

Excellent runnability

Uniform coating quality

OptiCoat Jet produces high quality coating on paper and board in both cross and machine direction. High quality backing roll is one of the reasons for reduced MD coatweight variation. Skipfree coating is a result of a very effective de-aeration in color circulation. The application method and cross direction control capabilities are important for uniform application and excellent CD profiles.

Fast start-up and web break recovery

All Valmet coating stations are fully pretested in workshop. The instrumentation and controls are integrated in the machine and all the controls located by the station frame. The interface and automation systems are user-friendly. After web breaks, coating can be re-started fast. Tailthreading is fast and reliable. A wide operating window enables good surface quality almost immediately after the coating is started.

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Easy to adjust, operate and maintain

Because of a wide operating window, coating quality is easily maintained high when speeding up the machine. The wide window and operator friendly automation facilitate finding the correct parameters for each paper or board grade. Clean coating process and easy wash-up speed up the maintaining operations.

Excellent runnability

Jet application is contactless resulting less breaks. Runnability is also improved because of a smaller doctor blade load compared to other application methods. Jet application also has excellent efficiency even at very high speeds.

 

Read more about Valmet's air drying & chemical systems, which complete high-quality coating & sizing

Read our latest customer success stories about Valmet OptiCoat Jet deliveries

Liansheng Pulp and Paper: big success with PM 1 carton board and PM 3 high-grade fine paper lines

Feb 27, 2024

Living up to expectations, Liansheng’s PM 1 carton board and PM 3 high-grade fine paper production lines have been recognized as a success not only by Liansheng, but also by their customers.

Low-carbon capacity with Jingui BM2

Oct 19, 2022

In 2021, APP Group successfully started up their new Jingui BM2 machine. The Valmet-supplied technology used in BM2 helps the company to meet its goals for low-carbon operations.

Hands-on quality at Stora Enso's Beihai Mill

Oct 27, 2017

Stora Enso’s packaging board is truly a team effort: the result of focused production practices, reliable technologies, a passion for quality control and full supply chain traceability, and the quest for perfect printability and convertability. It all comes together at the Beihai mill site in China.

Goals achieved with coater section rebuild in Mayr-Melnhof Kolicevo

Jul 6, 2017

All the targets for the project were achieved. Runnability is better than before, and the efficiency is better, too,” says Rok Sustar from Mayr-Melnhof Kolicevo in Slovenia. A multilayer curtain coater and a blade coater started up after a very short shutdown period in the summer of 2015. A supply system for the two layers of the curtain coater was also installed.

Interested in pilot trials?

Get in touch with our pilot trial experts to discuss how you could benefit from our pilot trial services.

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Planning a grade conversion?

The world is changing fast; the consumption of papers is decreasing and boards increasing. Update your paper machine with Valmet to produce more profitable products.

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How do you plan a successful rebuild?

Rebuilding a paper or board machine can improve the competitiveness of your business and your processes. Download our e-book to learn more.

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Watch our OptiCoat Jet related reference and product videos

Energy-efficient air drying at SAICA, El Burgo

Mar 25, 2019

Safety played a key role when SAICA El Burgo in Zaragoza, Spain, chose air drying technology for their new, Valmet-supplied off-line coating machine. High coating quality proved at pilot trials and energy savings compared to IR dryers were also important.

New off-line coating machine at SAICA El Burgo

Mar 25, 2019

A beautiful story of partnership to develop completely novel and innovative coated white top liner grades. Valmet supplied a new off-line coating machine at SAICA El Burgo in Zaragoza, Spain, where curtain coating head plays a key role.

Learn more about the services and automation solutions for coating

Coater roll covers

For highest quality coated board or paper, with high smoothness and gloss, in blade coating, Valmet offers a full range of reliable rubber roll covers as well as a high performing polyurethane cover. These roll covers have good wear resistance and strength properties ensuring long grinding intervals and long lifetime.

Roll maintenance

Valmet’s modular maintenance service solutions consists of roll maintenance, roll reconditioning, and roll upgrade services. These solutions help board and papermakers achieve maximum performance with transparent and consistently high-quality maintenance services.

Coater blades

Coater blades play an important role in the paper or board making process. They hugely affect efficiency, both materials and time, and have a major impact on final product quality. In blade coating, paper quality variations and rapid wearing of coater blades inevitably result in production losses and higher blade costs. The Valmet Coater Blade family consists of four carbide blades which leave a uniform layer of coating color on paper or board surface, thus creating an excellent finish for d...

Doctoring products

Doctoring affects machine runnability, paper and board quality, production costs, and production efficiency. Runnability can be improved by optimizing doctoring parameters and blade materials. Cleaner rolls result in better end-product quality. The blades can be selected to meet customers shutdown schedule which will lead to fewer blade changes resulting in lower blade costs. The reduction of unplanned shutdowns and costly downtime periods can be avoided by reliable and trouble-free doctoring....

Tail threading

A reliable tail threading process decreases tail threading times, minimizes waste and improves safety. This means an investment in your process is an investment that pays for itself. Whether you need improvements in paper or board machines, we have an advanced tail threading solution that clearly enhances your production efficiency. Our comprehensive range of tail threading services, from preventive maintenance to tail threading study secures optimal operation of your equipment and reduces threa...

Automation for Board and Paper

Valmet provides future-proof automation solutions for board and paper production. The industry-leading distributed control system (DCS), quality control system (QCS), analyzers and measurements continuously improve your process performance while achieving savings in fibers, chemicals, and energy.

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