Paper Machine Refining

SKU: C-692Duration: 42 Minutes

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.

Language:  

$39
 Add to Cart

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.

Language:  

$299
 Add to Cart

Great for trainers or groups who need unlimited online access to multiple courses. Available in two ways:

Stock Preparation Series (Details)
Includes 5 courses for $299/year.

Paper Library (Details)
Includes 92 courses for $1,499/year.

Ideal for corporate licensing and high volume users.

Get Convergence courses into your current LMS to track and report employee training. Or contact us to learn more about the advantages of licensing our courses with the Convergence LMS.

Get Pricing Info

 Need help deciding? Compare delivery formats.

Course Details

Specs

Training Time: 42 minutes

Compatibility: Desktop, Tablet, Phone

Based on: Industry Standards and Best Practices

Languages: English, Spanish
 Multiple languages available for USB and Enterprise (SCORM/AICC) formats. Contact us for more info.

Refining is one of the critical process steps in engineering the structure of paper and board as it has a major influence on fiber quality. Refining mechanically alters the fibers by brushing, hydrating, and cutting them. This course will describe low consistency refining as well as refining actions as they relate to double disc refiners. It also discusses the different refiner types, key components of a double disc refiner, typical control strategies, and the effects of refining on sheet properties.

Learning Objectives

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

  • Describe the effects of refining on wood fibers
  • Identify safety hazards and safety guidelines associated with refiners
  • State the objectives of refining
  • Identify the different refiner types
  • Identify and describe the key components of a refiner
  • Describe the operation of refiners
  • List the typical control strategies
  • Identify the effects of refining on sheet properties
  • Explain the effects of over-refining

Key Questions

The following key questions are answered in this module:

What is the purpose of paper and board machine refining?
The main purpose of most paper and board machine refining is to improve certain sheet properties, including strength and density-related properties.

What happens to the fibers during refining?
The fiber cell walls are delaminated, allowing them to absorb more water and increasing their flexibility. External fibrillation of the fiber surfaces increases the surface area available for bonding, and some fiber cutting and creation of fines takes place.

Why is it important to keep the flow rate through a refiner steady?
Flow rate determines the amount of time the fibers are available for treatment in the refiner. Low flow can lead to fiber cutting, fiber channeling in the plate grooves, and poor strength development. High flow can cause plugging and poor fiber development.

Why do broke fibers and recycled fibers not respond as well to refining?
Broke and recycled fibers have already been refined and contain some shorter fibers, which don't respond as well to refining. Also, they have been previously dried, so don't absorb water as readily, making them more difficult to refine.

Sample Video Transcript

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

All paper and board machine refiners are hydraulic machines with high-speed rotating elements. They are similar to centrifugal pumps in that fluid friction and centrifugal forces have a considerable influence on their operation. Each refiner consists of one or more sets of rotating or rotor plates opposite one or more sets of stationary or stator plates. These plates are positioned very close together. As stick-stock is pumped between the plates. Bars and the plate surfaces treat the surface of the fibers, in order to expose greater amounts of surface area suitable for bonding. Besides fibers selection and pulping method, refining offers the best opportunity for paper makers to enhance the quality of the end product.

Customer Q&A

I would like to have several employees take multiple courses. How can I set that up?

We're in the process of making bulk course and multiple user purchases easier. But for now, you can order multiple courses and contact us with details on who you'd like to assign courses to. We can set up each user's training plan and make sure everyone gets the eLearning assignments they need.

Can I get a free full-length preview of a course to see what this course covers?

While we do our best to offer details on course contents, we don't normally offer full-length previews. But please contact us with more details for a better understanding of what your organizaton needs and how we can help.

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 each eLearning course.

How do I log in to take a course that I have already paid for?

You'll receive an email with login details moments after you purchase your pay-per-view (PPV) course. Just click the login link and enter the user name and password provided.

Do you have courses in different languages?

Yes. While all of our courses are originally produced in English, we develop many courses in a growing number of languages, including Chinese, Dutch, German, Italian, Japanese, Korean, Polish, Portuguese, Russian, Spanish, Tamil, and Thai. Available languages are normally displayed in the Course Details section on each course page.
Added to Cart! Click here to view your cart.
Training Software
eLearning Courses
Solutions
Convergence Training Newsletter

Stay up to date on our products and offerings and get safety, compliance, and training administration tips in our free monthly newsletter.

©2016 Convergence Training | Privacy Policy