MEMBER'S QUESTION;

What are the proper containerboard and combined board temperatures as they make their way through the corrugating process?

 

ASKRALPH RESPONDS:

Here is the temperature information that you will need to monitor the process. The absolute temperatures are critical, but so are the differences across the machine.  If the sheets are not “heating up” uniformly then one can experience difference in the combined board tests. You may also want to review the information in the April 19, 2008 edition of OBM.  See page 4.

Singleface liner existing the preheater	180 degrees
Medium entering the corrugating rolls	185 degrees
Singleface web liner existing the corrugating rolls	260 degrees
Single face web at the flute tips existing the corrugating  rolls	200 degrees
Doubleback liner entering the hot plates	195 degrees
Singleface web liner entering the hot plates	200 degrees
Dobleback liner exiting the hot plates into the cooling section	260 degrees
Adhesive in the glue pans	100 degrees