Paper Machine Alternative Drying Systems

SKU: C-746Duration: 31 Minutes Certificate Included

Pay-per-view (PPV) format perfect for individual users.

Get immediate access to this interactive eLearning course online. Must be used within 30 days, expires 48 hours after launch.

Great for in-person classroom training or as an alternative to DVD.

Includes printable documents and Convergence Video Player for Windows systems. Content expires after 1 year.

Ideal for corporate licensing and volume users who also need administrative tracking and reporting on training.

Get this interactive eLearning course into your LMS or learn how you can leverage our LMS to deliver training to your workforce.

Need multiple courses or have lots of users? Just let us know a little more about what you need and we’ll get you some great volume pricing.

 Need help deciding? Compare delivery formats.

Course Details


Training Time: 31 minutes

Compatibility: Desktop, Tablet, Phone

Based on: Industry Standards and Best Practices

Languages: English

On most conventional paper and board machines, the energy required to dry the sheet to the desired moisture target at the reel is supplied by a series of rotating steam-heated dryer cylinders or cans. This module briefly covers the principles behind this system of drying. It will discusses applications where this system is not the best choice, and where alternative drying techniques can be used. These alternatives include: Yankee drying, through-air drying, infrared drying, impulse drying, and air impingement drying.

At the end of this module, you will be able to:

  • Identify and describe the major components of a multi-cylinder dryer section
  • Describe the principles of operation of multi-cylinder dryer sections
  • List some the drying alternatives to multi-cylinder drying
  • List the advantages and disadvantages of multi- cylinder drying
  • Describe the process and typical components for Yankee drying
  • Identify typical products in which Yankee drying is applied
  • Describe the process and typical components for through-air drying
  • Identify typical products in which through-air drying is applied
  • Describe the process and typical components for impulse drying
  • Identify typical products in which impulse drying is applied
  • Describe the process and typical components for infrared drying
  • Identify typical products in which infrared drying is applied
  • Describe the process and typical components for air flotation drying
  • Identify typical products in which air flotation drying is applied

The following key questions are answered in this module:

What are some of the weaknesses of conventional multi-cylinder dryer systems?
Multi-cylinder dryer systems have relatively low drying rates so require a lot of space, they respond rather slowly to control changes, and they inherently offer poor control of cross-machine moisture profiles.

Can Yankee dryers be used in the production of non-tissue grades?
Yankee dryers can also be used to produce machine-glazed (MG) papers. On these machines, there is no dryer coating, steam pressures and temperatures are lower, and additional dryers are necessary to assist in sheet drying.

How does through-air drying increase the bulk, softness, and water absorbency of the sheet?
Through-air drying machines do not employ any wet pressing, so the sheet is never crushed.

Infrared drying is not usually very economical, so why is it used at all?
Infrared dryers are small so they are sometimes used to add incremental drying capacity. They can also provide additional control over cross-machine moisture profiles, or non-contact drying for paper coatings.

What is air impingement drying?
Air impingement drying involves blowing hot dry air onto a wet sheet. Yankee dryer hood systems involve this type of drying, and air impingement is also used in flotation dryers.

Below is a transcript of the video sample provided for this module:

Infrared dryers heat a wet sheet using radiant heat transfer. A hot surface gives off infrared radiation, which is absorbed by the fibers and the water around the fibers. The absorbed energy quickly heats the water to its evaporation temperature and drives the water from the sheet. Infrared radiation can be generated either by electrical elements or by passing natural gas through a catalyst coated material, which burns the gas without a flame to create a very hot surface. Although the drying rate created by infrared heaters is much higher than conventional steam heated dryer cylinders, the overall economics are not as favorable. For that reason, infrared heating is used only in specialty situations.

Use the additional resources and links below to learn more about this topic:

Customer Q&A

Ask a Question

Sorry, we're missing some information

How do I log in to watch a video that I have already paid for?

Easy! Moments after you purchase your pay-per-view (PPV) course, you'll receive an email with login details. Just click the link and log in with your user name and password and you're on your way!

I would like to have some of my employees take 5 of your driving related courses, how can i set this up?

We're in the process of making bulk purchases and purchases for multiple users easier. But for now, you can order multiple courses and just let us know who you'd like to assign courses to. With an email for each user, we can set up their training plans and make sure everyone gets the eLearning assignments they need.

How can I get your paper-making courses for free?

Well, we can't blame you for asking... And while we're a for-profit company, there are situations with students and certain educational organizations where we can help out with a selection of eLearning. However, our online courses are extremely economical. And our paper industry courses are in very high demand. So, without knowing more about your situation, we think you'll get loads of value from the $39 you'll spend on any of our premium courses.

Do you have eLearning in Portuguese?

Yes, we do! And in addition to primary English narration, we produce many courses in a growing number of languages, including Spanish, Chinese, Dutch, German, Italian, Japanese, Korean, Polish, Russian, Tamil, and Thai.

I'm unemployed, but I really like your eLearning. Do I get a certificate when I complete a course?

Yes! All of our courses allow you to print a completion certficate upon successfully passing the integrated test at the end of eLearning. In the future, we'll have badges for you to use in your LinkedIn profiles.
Added to Cart! Click here to view your cart.