Posted: 25 July 2012 at 12:05pm | IP Logged

I believe the analytical test is designed to cover the client wearing socks and not to go bare onto the skin.  This is an argument that you wil have to take up with your client.

If you want to improve the wet rub of your leather, you need to have a discussion with your dye supplier to get you a dye that has better rub resistance.  Obviously this will come at a price.

Let me know what the outcome is please.

Posted: 25 July 2012 at 2:45pm | IP Logged

Dear Soala:  The theoretical answer to your problem is much too complicated to solve, especially with the lack of information that is customarily given by a tanner attempting not to get scolded by the tannery owner/administrator admonishing not to give-out company "secrets" away for free!  You don't even give an inkling wether the problem is due to loose, but strongly dyed leather-fiber bits, or colloidally aggregated dye particles not bound to the collagen because the aggregation into a pigment particle by the dye, by forces that are too strong for too a weak cationic fixing system in your production.  It is difficult for a tannery employee to get free advice to save time and money to solve a problem! 

I propose that while this is done and I would expect that if successful, your company make a small donation, not to me but to ALCA, the sustainer of this forum!

Please temporarily shelve this problem while we determine what really is the real problem with an emergency temporay solution of applying a very thin (thus non-hardenning) aqueous-EMULSION nitro-laquer coat on the flesh side just before ultimatelly drying and perhaps lightly plating and shipping the leather to the customer!  For this there is no charge as it is done as a courtesy from ALCA, but a detailed study and solution will cost you some!