緯欣企業有限公司
WELL SING ENTERPRISE CO., LTD.
緯全有限公司
WELL CHEM PRODUCTS INC.
5F, 294-3, SEC. 4 CHENG TEH ROAD, TAIPEI, TAIWAN, R.O.C.
FAX: (886-2) 2883-5595 TEL: (02) 2883-5616 E-mail: wlsing@ms2.seeder.net
Dyes for Leather－3
The information give in this shade card is based on our general experience and where applicable, on the results of tests on samples of typical manufacture. However, because of the many factors, which are outside our knowledge and control, which can affect the use of these products, we cannot accept liability for any injury, loss or damage resulting form reliance upon such information.
Welleather Dyes
ON FULL CHROME SIDE LEATHER
% Base on the shaven weight of leather (from wet blue)
WETTING BACK:
300% Water 50℃
0.3% Wetting Back Agent
1.0% Ammonia (0.88) 60min
DEGREASING:
250% Water 40℃
0.3% Degreasing Agent 30min
Rinsing
RETAINING:
15-% Water 40℃
3.0% Chromatin B 60min
NEUTRALIZATION:
2.0% Neutralization Agent
1.2% Sodium For Mate 20min
0.8% Sodium Bicarbonate 40min
TANAGER:
6-8% Resin Tannin 90min
Washing PH: 4.8/5.0
DYEING AND FAT LIQUORING:
150% Water 50℃
1.0% Leveling Agent 10min
X% Dyestuff 20min
6.0% Fat liquor 60min
X/2% Formic Acid 20min
PH: 3.8/4.0
1.0% Cationic Liquid 20min
Rinsing in cold water
PROPERTIES AND FASTNESS
Properties and fastness of leather dyestuff have been assessed, when the proper method is available, according to the international I.U.F. rules.
The figures, referred to the gray scales or to other evaluation methods, take the usual meanings i.e.:
1－poor, 3－fair, 5－very good
(A) PROPER TILES:
Solubility : assessed at 60℃ in distilled water.
Penetration : assessed on (2.0%)chrome calf (cr.) and (5.0%) chrome suede calf's.)
(B) FASTNESS:
Light : by exposure to remotest of dyeing on chrome calf (cr.) and suede chrome calf (cu.) obtained with the percentages already mentioned.
(I.U.F. 402)
Washing : 30min.at 40℃ with 5g/1laury sodium soleplates.
(I.U.F. 423)
P V C Migration:
Together with a piece of white pigmented; plastic zed P V C a test piece of a dyeing on full grain chrome calf (cr.) and of a dyeing on crusted suede spite (su.) topped by 50 gm weight for 3 days at 80℃/176℉
