Comments on: Acidic Damage in the Sulfur-Black Dyeing of Denim

By: Debasish

Debasish — Wed, 01 Dec 2010 03:38:44 +0000

Dear Mr Mercer,

Thanks for your post. I need your further advise on below which we are facing issue in Blue Black and BLack Denim which are as under

1. PH Value cant control during Garment Laundry
2. Garment Color Fastness to washing, Perspiration, rubbing & Dry cleaning is failing continuously.

Hence would you please suggest how can we resolve above issue in bulk Production

By: Najam

Najam — Thu, 07 Oct 2010 18:48:22 +0000

i am very jubilant to contact you.actually i am in contact with sandeep agarwal.he suggested me to contact you.i am working in rope dyeing since last seven years.now a days i am facing a serious problem with my all articles.i.e the problem of quick washdown.i need to have maximum depth of the shade(pure blue).i am using the indigo 40% vat solution.i am using the indigo feed rate up to more than 7.5%.i.e 2100ml/min to achieve the required depth of shade.But as it goes to washing,indigo bleeds very quickly.this shade is running with 8 dips.only preweting is followed.because of this problem indigo costing is going out of the limit.what would you like to suggest to resolve this issue.i will be very thankful to u if you could help me out.waiting for your response.
regards
Najam Iqbal

By: mila villavicencio

mila villavicencio — Fri, 04 Jun 2010 04:25:05 +0000

Thanks mr. mercer for having this post, i learned more about sulfur dyeing & how to solve some of the problems that i encountered in actual production.