Process

%

Chemical

^oC

Time(min)

PH

Comments

Washing

200

Water

35

0.2

Rockol  642

0.2

Formic acid

20

         Drain

100

Water

35

    Rechroming

3

Chrome (26/33)

0.5

Rockol FM-222

0.3

sodium formate

60

30

4.3

O.N (Run5min-stop1min)

         Drain

150

Water

35

         Neutralization

1.5

Sodium formate

30

0.6

Sodium bicarbonate

3×15

5-5.1

Check Ø with B.C.G

         Drain

Washing

300

Water

35

5

Drain

100

Water

35

    Retannage

3

Rockytan RE-808S

30

4

Rockytan RR7

30

2

Rockytan RP2

2

Chestnut extract

         Dyeing

3

Dye

60

Check Ø penetration

0.3

Formic acid

30

4.5

         Drain

100

Water

50

      Fatliquoring

1

Rockol OFM-345

3

Rockol LNP-375

2

Rockol OPS-322

60

1

Formic acid

2×15

3.7

0.1

Rockol FM-222

5

         Drain

Washing

200

Water

20

5