It is just about two inch by i inch water stain on the leather seat.
Cause by rain and sun bake the water left some shrink-hardened spot
Attachment 5300
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It is just about two inch by i inch water stain on the leather seat.
Cause by rain and sun bake the water left some shrink-hardened spot
Attachment 5300
Shrinkage leather has 2 level to take care of:
The leather structure
and the finishes.
The leather structure is hydrated and stretched back by manipulating or massaging it while the leather structure is plump up and soften up.
this process will return the shrinkage back to original is done patiently.
When the leather structure is back to dimension Fatliquor-5.0 need to be replenished to return the leather to suppleness.
However,
When mush effort is to resort the shrinkage, in most cases the finishes are damaged and will need refinishing.
We are talking about leather restoration for both the leather structure and the finished and not about water stain due to pH difference.
"The leather structure is hydrated and stretched back by manipulating or massaging it while the leather structure is plump up and soften up.
this process will return the shrinkage back to original is done patiently."
Did you mean apply hydrate 3.3 then massaging the leather? so the Fatiquor 5.0 will not help the shrinkage right.
how will this procedure destroy the black finish? will the color off original after doing this?
>>> Did you mean apply hydrate 3.3 then massaging the leather? so the Fatiquor 5.0 will not help the shrinkage right.
Fatliquor-5.0 may assist the Hydrator-3.3 at a continuous wet phase at the working end – soften up first prior to replenishing the original diminished fatliquor so that when the leather dries it will be supple. Tips before the leather becomes completely dry manipulating or massaging it until dry will produce a more supple leather.
The reasons:
When leather is shrunk, the leather fiber within the leather structure becomes stick together and the air space is compromised that result in stiffness.
These sticks together fibers need to be relaxed and comes separates both horizontal and vertical to allow free movement of the fiber structure.
It is only when the leather structure is restored that Fatliquor-5.0 thereafter restores the leather to its suppleness when dry. Fatliquor-5.0 its fat plumps the leather with fullness and the oil lubricates the leather structure with smoothness when flexed.
In practice:
The Shrunk areas are saturated with Hydrator-3.3 and may be left on the spot with a layer of cotton pad or tissue paper and cover with a plastic cling wrapper to control evaporation.
When the leather stiff spot soften up, a ballpoint tip tool or from the tip of a teaspoon is worked over a clear plastic sheet to stretch out the leather surface. Working over a clear plastic sheet helps prevent or reduce rippled finishes from delamination. Note that when finishes ripples is apparent, even though it is carefully taken care of will soon rub off with friction rubs when one slide in and out of car. Sooner or later it need to be refinished for normal usage.
Fatliquor-5.0 can be slowly added to the working out of the shrinkage alongside with Hydrator-3.3 to same some time as soon as the saturated leather structure softens up.
>>> how will this procedure destroy the black finish? will the color off original after doing this?
The leather rejuvenating process (Hydrator-3.3 > Fatliquor-5.0 > Hydrator-3.3) will not affect the color in appearance. The blistering effect with airspace has already ‘destroy’ the bonding between the finishes and the leather crust. Thus easily removed during the restoration process or may not becomes as durable as the other areas since the bonding has already being compromised. If the finishes stays intact it is recommended that Protector-B+ or B be applied at a routine basis to reduce friction rubs.
Kit-Ap7.cl system is recommended for restoring both the structure and the finishes.
Attachment 5301
http://www.leatherdoctor.com/kit-ap7...finishing-kit/
Roger Koh
Leather Care System Formulator / Practitioner / Consultant / Instructor / Coach
[email protected]
General Product Description
Attachment 5302
Leather DoctorŽ Hydrator-3.3 is a waterbased pH 3.3 leather-safe hydrator. It is a fatliquor preconditioner with multi functional abilities. Surface application is primary to check for even surface tension free of blotchiness prior to fatliquor replenishing. Structural application will require saturating to an optimum level with moisture oozing out when gently pressed between thumb and fingers.
The multi functional abilities include:
a) To check for surface tension for an even appearance free from blotchiness prior to fatliquor replenishing.
b) To plumps, relaxes and separates crushed, shrunk and stick together fibrils for manipulating away-unwanted creases and wrinkles.
c) To clean the leather of structural foreign contamination, the plump and limp leather is squeeze with towel laid between the leather and a smooth spatula or equivalent.
d) To rectify alkaline overexposure areas by facilitating colloidal water movement to redistribute the leather constituents from surrounding areas.
e) To activate the dormant dyestuff within the leather structure for color refreshing.
f) To facilitates colloidal water movement within the inter-fibrillary spaces for wicking foreign soiling particulates to resurface.
g) To stabilize, pH balance and charge the protein fiber below its iso-electric point (pI) ionic positive to hydrogen bond with the ionic negative fatliquor more effectively.
This universal Hydrator-3.3 is for all leather types including pigmented, aniline, vachetta, nubuck, suede, hair-on-hide and woolskin.
Instruction:
A. Surface Tension Inspection:
A1. Spray Hydrator-3.3 evenly and wipe with lint free towel to free of surface tension for an even appearance prior to fatliquor replenishing.
B. Stiffness, Creases and Wrinkles:
B1. Saturate the thickness of the leather to an optimum level with moistures oozing out when gently pressed between thumb and fingers.
B2. Cover up with plastic wrapping to control evaporation and let it dwell up to 72hrs for softness.
B3. Manipulate by stretching and cross flexing to relax the leather to satisfaction prior to fatliquor replenishing.
B4. With satisfaction the Fatliquor-5.0 has to be immediately replenished while the leather is perhaps at 25% Hydrator-3.3 moisture level.
C. Cleaning:
C1). A combination of cleaning while saturating the leather is done with horsehair Brush-1 on the surface and towel extracting it. Deep cleaning beneath the surface from the leather structure for liquid stain is done with squeezing the leather with a smooth spatula with a towel in between to reduce abrasion and absorbing the foreign contamination – See F below
D. Rectify Alkaline Overexposure:
D1. Saturate the thickness of the leather to an optimum level with moistures oozing out when gently pressed between thumb and fingers.
D2. Cover up with plastic wrapping to control evaporation and let it dwell for redistributing of the leather constituents from surrounding area.
D3. Observe for appearance and test by finger for tactile squeaky feel prior to fatliquor replenishing.
E. Activating Dormant Dyestuff to Resurface:
E1. Saturate the thickness of the leather to an optimum level with moistures oozing out when gently pressed between thumb and fingers.
E2. Cover up with plastic wrapping to control evaporation and let it dwell up to 72 hours for excess dyestuff to resurface.
E3. Remove plastic cover and let it natural dry to observe color improvement prior to fatliquor replenishing.
F. Removing Penetrated Stains:
F1. Saturate the thickness of the leather to an optimum level with moistures oozing out when gently pressed between thumb and fingers.
F2. Cover up with plastic wrapping to control evaporation and let it dwell up to 72 hours for foreign soiling particulates to resurface.
F3. Remove plastic wrapping, replace with tissue paper without airspace to trap stains as it dries instead of remaining on the surface. Recommend that Fatliquor-5.0 is replenished in combination at this stage especially if the leather has already show signs of cracking.
F4. Peel tissue paper when crispy dry and erase with Eraser-4 or Eraser-5 for suede accordingly prior to fatliquor replenishing.
Attachment 5303
Leather DoctorŽ Fatliquor-5.0, a micro emulsion of fat, oil and water is an anionic charged pH 5.0 fatliquor for rejuvenating all leather types. It relaxes coarse breaks, creases and wrinkles enhance suppleness and prevent cracking. It softens the leather with stretchability, compressibility and flexibility, while enhancing its rip tensile strength greatly. It is for replenishing the original fat and oil that diminishes thru sun-bleaching, ageing, heat and alkaline overexposure or cleaning. On application, the water-encased molecule breaks free when hydrogen bond attraction takes place between the fat and oil with the protein fiber. The excess free water content wicks out leaving a breathing space behind for leather natural transpiration. The fat plumps the leather with fullness from easily collapsing into creases and wrinkles during stress or flex, while the oil lubricates the fibers so that they slide over one another smoothly like millions of inter-connecting hinges. Thus helps to keep leather at its optimum physical performance and prevent premature ageing. This universal Fatliquor-5.0 is for all leather types including pigmented, aniline, vachetta, nubuck, suede, hair-on-hide and woolskin.
Leather Approximate Quantity or Percentage of Fatliquor:
The quantities of fatliquor (fat and oil) contents retained in the leather after an universal tannery fatliquoring process may varies up to 14% depending on the leather types and it usage. This percentage drops as the fat and oil content diminishes or leaches through ageing, water, heat or chemical overexposure.
Leather rejuvenating or fatliquor replenishing is base on weight of the leather in relation to the percentage of remaining fatliquor. A simple calculation of percentage of fatliquor topping up requirement would be as follows:
If the weight of the leather in question is 100gm and fatliquor (fat and oil) content meter reading is less than 1%.
By applying 80gm of Fatliquor-5.0 to it will deliver an end result incremental of 13.3% fatliquor when dry as the 66.6% water contents evaporates.
In the leather rejuvenating Hydrator-3.3 > Fatliquor-5.0 > Hydrator-3.3 system, Hydrator-3.3 plays an important role by relaxing, opening up the inter-fibrillary spaces, facilitating and redistributing colloidal water movement, protonating and doing all the pre-conditioning work prior to fatliquoring including cleaning up any excess surface remnants to have a sticky-free surface. In practice the ratio for Hydrator-3.3 is 2 to 1 of Fatliquor-5.0.
It works out to be approximately 160gm of Hydrator-3.3 plus 80gm of Fatliquor-5.0 to replenish a 100gm dry leather from less than 1% back to the original tannery up to 14% fatliquor content.
Instruction:
1 Apply Fatliquor-5.0 and redistribute with foam brush until saturation.
2 Repeat applications each time water contents evaporate until fully saturated.
3 Drive remaining surface remnants free of milky fat and oil until it turns clear with Hydrator-3.3.
4 Allow natural drying for extra softness.
5 Suppleness for vegetable-tanned leathers is further stake or massage or flex accordingly with a little wet back with Hydrator-3.3 prior to doing so to prevent cracking from under replenished leather.
Tips:
1 When crispy dry, prior surface contaminations/damages may darkens as soiling particulates resurface.
2 Removes soiling particulates with Eraser-4 for all leathers including nubuck and Eraser-5 for suede.
3 Stretching the darken areas lightly will also lightens the appearance.