OCC - Pulping

SKU: C-770Duration: 28 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.


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

Supplemental and Recycled Fiber Series (Details)
Includes 13 courses for $499/year.

Pulping Library (Details)
Includes 72 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.

Course Details


Training Time: 28 minutes

Compatibility: Desktop, Tablet, Phone

Based on: Industry Standards and Best Practices

Languages: English, Portuguese, Spanish

OCC plants convert recycled old corrugated containers into pulp that can be used on paper and board machines to make valuable pulp and paper products. This course describes the "repulping" process which converts unpacked OCC bales into a pulp slurry using a repulper.

Learning Objectives

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

  • Describe the purpose of repulpers in OCC plants
  • List safety hazards and safety guidelines associated with repulpers
  • List the process steps for OCC repulping
  • Identify and describe major components of repulpers
  • Identify and describe primary process flows

Key Questions

The following key questions are answered in this module:

What are the components of a repulper?
A typical OCC repulper consists of a vat, a rotor, an extraction plate, pumps, a junk trap and a ragger.

What range of pulp consistency is used in repulpers?
There are different repulper types. Low consistency repulpers operate at consistencies below 6%, medium consistency is 6-12%, and high consistency repulpers operate from 12-19%.

What is the difference between batch and continuous repulpers?
In batch repulpers, the addition of OCC and water, slushing, diluting, and dumping are completed in a series of steps. Because continuous repulpers operate continuously they have a higher capacity because they don't need to stop to fill or dump.

What is the purpose of the rotor?
A repulper rotor has two major purposes: to agitate the fiber-water slurry, and to keep the extraction plate mounted under the rotor clear.

What is the purpose of a junk trap or ragger?
The junk trap and ragger remove large contaminants from the repulper vat and protect downstream equipment from damage and wear.

Sample Video Transcript

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

A typical OCC repulper consists of a vat, rotor inside the vat, one or more pumps each with an extraction plate, a junk trap, and a ragger. The OCC bales are typically fed into the repulper vat by a conveyor system along with a measured amount of dilution water. The rotor positioned at the bottom or side of the vat is used to break up the OCC into separate fibers suspended in the water. The ragger and junk trap are used to collect and remove large contaminants from the top and bottom of the vat respectively, and the extraction plates are used to screen the slushed pulp as it exits the vat in order to protect downstream equipment. The OCC pulp is then pumped to the next process step.

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.