Converting Blogs

Dave’s Favorite Defects: Blocking

By Dr. David R. Roisum  
Blocking is when wound-roll layers stick together too aggressively. Of course, it is your customer, the unwind, that defines how much is too much.
Blocking is a tight defect common with adhesive products but is also seen on many coated and printed products as well as some film chemistries. Find out why blocking favors the bottom of a wound roll and why the mechanics are the TTP factors plus chemistry.

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