REZEREXSM
Laboratory Approved Restoration of Sticky Shed Tapes
The Sticky Shed Solution:

The Rezerexsm Process

Many experts assert that the Sticky Shed syndrome has as its sole chemical cause the deterioration of the oxide binder by hydrolysis. Published for the first time is the visual evidence that Sticky Shed Syndrome contamination of magnetic tape has as its major chemical causal origin in the tape's deteriorated carbon black back coating.   Carbon black particles are extremely small in size at about .05 microns and thus cannot be seen with the unaided eye.  High magnification (electron microscope pictures at 800X taken by Chemir Analytical Laboratory) of the magnetic tape's oxide surface shows carbon black particles from the deteriorated back coating are all over the oxide's rust colored surface. Others have completely overlooked these critical, small, carbon particles' chemical activity for decades.    

Sticky Shed contamination has a number of causes.  First and foremost, hydrolysis breaks down the carbon black back coating components and turns them into a gooey black substance.  Second, the direct result of the physical contact from the tape's two coatings touching eachother when wound in layers on hubs and reels is the mechanical contact transfer of this deteriorated carbon black back coating material onto the oxide's surface causing oxide coating problems. 

Third, hydrolysis breaks down the chemical structure of the bond links of the binder chemicals.  Additional mechanical contact contamination of sticky shed debris material comes off the tape surfaces and gets onto various parts of the tape machine.  This causes many mechanical and sonic problems such as squealing, high scrape flutter and major high frequency scanning losses at the playback head gap. 


Figure 1 is a picture of the contaminated oxide surface before restoration.  It shows that the carbon black particles have transferred mechanically from the back coated surface onto the oxide surface. 


Figure 2 is a picture of the same oxide surface after Rezerex processing.  It shows that the formerly Sticky Shed contaminated oxide surface is now clean of all Sticky Shed and carbon black particles. 


Figure 3 is a picture of the back coated side before Rezerex processing.  It shows massive amounts of carbon black materials on the back coated side of the tape's base film. 


Figure 4 shows the same side  of the film surface after Rezerex processing.  It is now clean of all carbon black material and Sticky Shed contamination.
 

Rezerex’s patented processing safely removes all the carbon black back coating from the base film and cleans the contaminating debris from the oxide's surface.  The tape's surfaces and its oxide binder are fully restored to excellent mechanical, magnetic and sonic performance.  Rezerex’s process stops and reverses hydrolysis’ destructive chemical activity and puts the tape’s chemistry into the desired equilibrium conditions.  This returns the tape to its near original condition and makes tape the ideal archival medium.  The tape can now be preserved for a very long archival life span. The Rezerex process thus eliminates any future possibility of Sticky Shed Syndrome being caused by deteriorated carbon black back coating problems as all this troublesome material is discarded.