TANKROM® OB
Tankrom® OB is a self-basifying
basic chromium sulphate. There is no need for any
basification agent for chrome tanning process.
Tankrom® OB which is produced
to minimize the defects emerging from basification,
offers the following benefits for leather:
As
Tankrom® OB contains basification agent,
basification is not necessary and current controls
are not required.
Saves
time and labour.
Makes
chrome tanning process easy.
Gives
good fullness, bright color.
A
uniform leather quality is obtained.
| TECHNICAL
PROPERTIES |
| Chromium Oxide
Content (Cr2O3 %) |
21,0 |
|
APPLICATION
Tankrom® OB is added directly
into the drum in powder form. Tankrom OB should
be used 6-10% on pelt weight in main tanning for
pickled hide and skin whose pH must be 3.2-3.3.
After adding Tankrom OB, drum should
be run without waiting. Using paddle is not suitable
for self-basifying system.
For successful chrome tanning, some
tanning conditions such as bath length, bath temperature,
basification and tanning time are important besides
the type and amount of basic chromium sulphate used.
Some of our advices are as follows:
Low
bath length should be preferred as much as possible,
in order to accelerate penetration and to raise
final temperature and chrome exhaustion.
Since
penetration is encouraged by low bath temperature;
starting temperature of tanning should be 15-20
OC and temperature should be raised gradually to
35-40 OC at the end of the chrome tanning by mechanical
action or heating system of the drum.
Drum
should be run at least 8-10 hours continuously.
As no special supervision is required, the chrome
tannage may be allowed to proceed automatically
during the evening and night hours.
At
the end of tanning, drum should be drained and rinsed
with warm water approximately 15 minutes.
PACKAGING
25 kg inner layer polyethylene, outer
layer polypropylene woven bags; palletized, shrink
wrapped.
STORAGE CONDITIONS
Store in cool and dry places. Keep away
from sunlight and heat sources.
SAFETY PRECAUTIONS
Harmful effect on skin and eye. After
contact with skin and eye wash immediately with
water. Avoid breathing the dust.
(Data given are indicative and
represent only the average results of our analysis.)
