A. Two – Step
Acid/Alkaline Cleaning
Acid Cleaners are not recommended for soap–type
texturing fluids. When applied the soap ingredient is converted to fatty acid on
oily water insoluble liquid. This liquid is not easily removed from the disk
surface in subsequent alkaline cleaning steps.
Acid cleaning can also fix residues of oily
materials on the surface;, such as fatty acids, hydrocarbon oils and silicone
oils. The acid cleaner will make them more strongly attached to the surface. If
an acidic cleaner is used in the brush-cleaning step, the oily substances will
smear or spread on the PVA and the disk surface will be more difficult to remove
completely with the subsequent alkaline cleaning.
However, if you would like to use the “two –
step” cleaning process, then you can use the following acidic cleaners:
NuKlean AC 202,
NuKlean AC 205, NuKlean AC 207, NuKlean AC 207, NuKlean AC 209
Our acidic cleaners can be
used in spray, immersion, ultrasonic and scrub stations.
They are formulated to clean soap containing
texturing fluids.
For the alkaline cleaning step you can use:
NuWet DM 36, NuWet
DM 41, NuWet DM 49, NuWet DM 50, NuWet DT 67, NuWet DT 75,
NuWet DT 78
These are heavy duty
alkaline cleaners for difficult to remove organic residues, and particulates.
Our cleaning products can
be tweaked to meet your cleanliness requirements. Or, we can custom formulate a
new cleaner for you exclusively.
B. Alkaline Cleaning
Mildly alkaline products can be used in the
post-texture spray and immersion steps.
These products
will remove the texturing fluids containing soaps without converting the soap
into fatty acid, as well non-soap fluids. It is important to remove most of the
texturing slurry in the early stages of cleaning. These products are buffered.
Mild alkaline buffered
cleaners:
NuRinse BR 33,
NuRinse BR 54, NuRinse BR 55
Then, stronger alkaline
cleaners can be used in the pre-sputtering cleaning step. These products will
remove organic residues, diamond particles and swarf. They are non-chelated.
High alkalinity cleaners:
NuWet DM 30, NuWet
DM 41, NuWet DT 64, NuWet DT 67, NuWet DT 72, NuWet DT 78
Removing Aluminum oxide
slurry can be accomplished with acidic cleaners such as:
NuKlean AC 205,
NuKlean 209
Or, mild alkaline cleaners
such as:
NuRinse BR 33,
NuRinse BR 54, NuRinse BR 55, NuWet DM 42
Colloidal Silica can be
removed with:
NuWet DM 42,
NuWet DM 43
Post – Polish
Cleaning
Alkaline cleaners are most
effective in removing the polishing slurry. The following products can be
used.
NuWet DM 33, NuWet
DM 36, NuWet DM 41, NuWet DM 50
Post – Texture
Cleaning
Alkaline cleaners are most
effective in removing texturing slurries, including particulates. You can
use the following:
NuWet DM 41,
NuWet DM 46, NuWet DM 50, NuWet DM 300
As a pre – sputter cleaner
you can use our unique acidic cleaner NuKlean GD 11.
Removing Unusual
Contaminants From Glass Disks
We can custom formulate
cleaners to remove specific contaminants from your disks.
