The Quebracho Colorado extracts and its derivates are worldwide known since 1900's as natural products that allow tanners to produce a wide variety of tanned leather with a natural feel and a beautiful look. Unitán, with its two factories ISO 9001-2000 certified, has the world's bestselling vegetable extract product line. Our vegetable extracts are environmentally- friendly and give our customers the best choice for their leather production in a natural way.
Pickled skin ph 3.6/3.8
Process for full thickness or split skin.
50%
PICKLED BATH
Ph: 3.8/4,0 °Be: 6/8
5 - 7%
UNIQUE JR
1 - 2%
Dispersing syntan
(Naftalensulphonic syntan)
0.3%
FUNGUICIDE
RUN 3hs. THEN AUTOMATIC RUN (10´/Hs) OVER NIGHT TILL COMPLETE PENETRATION. –DRAIN-
30 %
WATER 30°C
2 - 3%
PHENOLIC SYNTAN
0.3%
FUNGUICIDE
RUN 2hs
0.5%
FORMICA ACID
RUN 30'
UNLOAD WITHOUT WASH – PILE REST OVER NIGHT – LIGHT SETTING OUT
PILE GRAIN TO GRAIN and COVER VERY GOOD UIT BLACK NYLON – REST IN FRESH PLACE.
Full Crupon Size
Delimming And Pickled To Ph= 3,6 / 3,8.
PRETANNING PROCESS
4 RPM
50%
PICKLED BATH
Ph: 3,8/4,0 cross section light green B.C.G °Be: 7
UNIQUE JR
Dispersing syntan
NAFTALENSULFÓNICO)RUN 120'
AUTOMATIC OVER NIGHT 5'/ HR
TANNING PROCESS
ADD
1.0%
PHENOLIC SYNTAN
RUN 30'
15%
SOLUBLE QUEBRACHO EXTRACT (1)
RUN 120'
30%
WATER 25°C
15%
SOLUBLE QUEBRACHO EXTRACT (1)
RUN 90´
0.5%
SULPHITED OIL
RUN 30´
15%
SEMISOLUBLE QUEBRACHO EXTRACT (2)
1.0%
PHENOLIC SYNTAN
RUN 4 A 6 Hs – THEN AUTOMATIC 5´/Hs. OVER NIGHT TILL FULL PENETRATION
AFTER 15/30 Hs Check final Temp =38°C / 40° C
DENSIDAD FINAL °Be= 15 / 17 °Bé(aprox)
0.2%
FORMICA ACID
RUN 120' pH = 3,8/3,6
DRAIN
WASH
150%
WATER 25°C
RUN 5'
DRAIN
PILE REST 24 / 48 Hrs - SAMMING – SABE (If it is necesary) – % OVER SHAVED WEIGHT
SAMMING VERY GOOD IN MACHNIE
BLASHING AND FATLIQUOR PROCESS
16 / 18 RPM
RUN 15' ONLY CRUPON SIZE (without water)
0.3% - 0,8%
UNICLAR
RUN 30'
1.0%
MAGNESIUM SULPHATE
1.0/2.0%
GLUCOSE
0.5%
ACID NAPHTALENE SYNTAN
2.0%
UNIQUE XE
1%
REPLACEMENT PHENOLIC
RUN 90'
1 - 3%
SOLE LEATHER OIL
RUN 60'
0,5%
ACID PHENOLIC SYNTAN
RUN 30'
UNLOAD / PILE REST / MECHANICAL OPERATION FOR SOLE LEATHER / HANG DRY
(1) = SOLUBLE QUEBRACHO EXTRACT: ATO / ATG / LIGHTAN / UNIQUE CHD .
(2) =SEMISOLUBLE QUEBRACHO EXTRACT: ATS / ATD / CHA .
LIMMING and SPLIT SKIN aprox. 3,0 / 4,0 mm
DELIMMING and PICKLED to pH = 3,6 / 3,8 - % OVER LIMMING WEIGTH or PICKLED WEIGHT + 50%.
PRECURTIDO
RPM 4 a 6
50%
PICKLED BATH
Ph: 3,8/4,0 – Light green with B.C.G °Be: 6
1,0/2,0%
Dispersing syntan
(Naftalensulfónico) RUN 30´
4.0%
UNIQUE JR
RUN 120' - Check penetration 30% aprox.
TANNING PROCESS
10%
SOLUBLE QUEBRACHO EXTRACT (1)
RUN 60'
ADD
30%
WATER A 25 °C
10.0%
SOLUBLE QUEBRACHO EXTRACT (1)
RUN 90´
1.0%
SULPHITED OIL
RUN 30'
10.0%
SEMISOLUBLE QUEBRACHO EXTRACT (2)
RUN 4 a 6 Hs. AUTOMATIC OVER NIGHT (5´/Hs) CHECK COMPLETE PENETRATION