The Cause and Countermeasure of the Color Shift of Leather Products
◆Reasons why Leather Products are Discolored
First of all, leather products are the concept of something that loses color.
There are two causes of color loss, the first one of the dyes and pigments contained in leather is transferred to another fiber material or leather, the other reason seems to be adhesion of fine fiber powder of dyed leather.。
The first case is the color discoloration of general leather products, where the binding of leather dye and pigment is weak and it stains other fibers etc.。
The second is when buff powder produced by suede or nubuck raising treatment remains to the end.
Our color loss is the first case, the general color loss。
Then, Is there any prevention the cause?[weak binding of leather dyes and pigments]?
◆Leather Jean Water Repellent Glass Coating Test Animation
◆Can We Prevent the Color Change of the Leather Products?
After examining, variously it is difficult to make leather [high dyeing fastness leather] which does not lose color for the following reasons。
Low temperature dyeing (High temperature dyeing improves fixation, but leather has low heat resistance and loses its texture)
Eluted by sweat and rain because it uses a highly diffusive acid dye that dyes the cross section of the skin
The bond between the leather and the dye is weaker due to the addition of a large amount of fatliquor (which imparts a softening effect) after dyeing
In addition, it seems that there are also situations where "the current reactive dyes that require high pH have limited use because they damage the leather substrate".
It would be fine if the surface was completely processed so as not to lose color, but then the goodness of the leather product would be lost, so it would be like both inside and outside.
◆How to prevent discoloration
Anyway, it is preferable to use it without touching rain or sweat.
You should avoid using leather on rainy days.
Don't forget a umbrella even on sunny days.
In addition, sweat increases from early spring to summer.
Of course not to touch leather directly to the body,
When wearing light clothes such as white or beige, it is better to make sure that there is no situation where leather products are strongly pressed against the body.
When I was walking with the shoulder bag of black leather diagonally, the leather and the rubbed part may be blackened, so avoid the leather products always contacting the body, and sometimes change hands, put it on the elbow, by hand It is recommended to have.
After that, try to maintain the water repellent as much as possible. Specifically, it is to do waterproof spray and exclusive waxing。
◆If you still want to use leather products without worrying rain or sweat
With Glation ultra water repellent coat, you can use leather products without worrying about rain and sweat by applying a special coat to the surface, to prevent moisture contact,
We do not get rid of acid rain, alcohol, sweat and dirt that cause color fading with super water repellent.
Also, unlike general household waterproof spray, the effect lasts for one year.
Depending on the frequency of washing, it may last a little longer.
