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EIT Persians to Clothing Nappa
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Product  |   Stripping  |   Retannage  |   Neutralisation  |   Fatliqouring   |   Dyeing  |   After Treatment  |   Notes

Raw Material     Vegetable pretanned E.I. Persians  
Product Used Top

Levapon OL

  Anionic wetting and degreasing agent

Chromosal B

  Chrome tanning material with approx. 33 % basicity

Tanigan PAK

  Lightfast retanning material with buffering neutralizing effect

Baymol A Liq

  Non-ionic degreasing and wetting agent
Percentage on dry weight
Wetting Back

1000.0%

  Water 40° C

15 min

      Drain Float  
Stripping / degreasing Top
 

200.0%

  Water 40° C  
 

4-6%

  Sodium sulphite undissolved

15 min.

Add

2.0%

  Levapon DL (dukyte 1:5 40° C)  
      pH of float approx. 6.0  
Rinsing     Water 30° C

15 min

Retannage Top
 

200.0%

  Water 30° C  
 

1-1.5%

  Formic acid 85 % (dilute 1:10)

10 min

      pH of floats; 3.5-3.7  

Add

15.0%

  Chromsal B undissolved

5hrs

      pH of floats: 3.5-3.8  
      Horse up overnight  
Neutralisation Top
 

200.0 %

  Water 40° C  
 

3.0 %

  Tanigan PAK undissloved

15 min

Add

1-1.5 %

  Sodium bicarbonate (dilute1:10)

45 min

      pH of float:6.0-6.5  
      Cross section blue (BCG)  
Rinsing     Water 50° C

10min

Fatliqouring Top
 

200.0%

  Water 50° C  
 

2.0%

  Cutisan TMK  
 

10.0%

  Water 70° C for emulsifying

30 min

Rinsing     Water 50° C

5 min

      Horse up overnight, set out, suspension dry, condition, stake, buff, weigh (=dry weight)  
Percentage on dry weights:
Dyeing Top
Wetting Back

1000.0%

  Water 50° C  
 

0.5%

  Baymol A Liq. (dilute 1:5 30° C)

45 min

      Drain float  
Predyeing     Without float  
 

2/3

  Dyestuff undissolved approx.

30 min

      Until desired penetration is reached  

Add

    Formic acid 85%

75-100% on weight of dyestuff used

(Dilute 1:10)

30 min

Add

500.0%

  Water 60° C

10 min

Add

4.0%

  Chromosal B undissolved

45 min

      Drain float  
Top Dyeing

500.0%

  Water 50° C  
 

1/3

  Dyestuff (dissolved hot)

20min

Add

    Formic aicd 85%

100% on weight of dyestuff used (dilute 1:10)

30 min

Rinsing     Water 50° C

10 min

After treatment Top
 

200.0%

  Water 50° C  
 

1.0%

  Persiderm SIN  
 

2.0%

  Persoftal SWA

30 min

      Horse up overnight, set out, suspension dry, condition, mill, toggle  
Notes Top
  1. For optional stripping effects possible add in 2 to 3 parts
  2. After treatment with Persiderm SIN (water-soluble repellent agent) and Persoftal SWA (anionic auxiliary) improves the handle of the suede and gives a silk lustre effect

Source:Bayer-Tanning-Dyeing-Finishing
Warranty: Our technical advice, given verbally, in writing or any way of trails can obly be considered as suggestion without warranty. This also applies whre protective rights of third party are involved. It doesnot release you from the obligation testing the product with regard of their suitablity for the indended processes and applications. In other respect, our Sales conditions apply


13/12/02
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