Unhairing / liming agent
Chemical & Physical Data:
A mixture of special unhairing agent and auxiliaries, free of Sodium Sulfide.
Light red liquid
1. DOWELLON UHA can replace sulphide completely or partially to loosen hair roots, remove hair and epidermis in liming process.
2. DOWELLON UHA is an environmental friendly product, does not release sulphide to environment.
3. DOWELLON UHA has strong capability of preventing excessive swelling. Limed pelts treated with DOWELLAN UHA tend to give soft and moderately swelled with remarkable reduction of growth marks, neck wrinkles; belly draws, loss of substance in lose areas of the pelt.
4. DOWELLON UHA helps to open up fibre collagen and imparts better softness and fullness in final leather.
DOWELLON UHA has good unhairing effect at pH range from 10-13, DOWELLON UHA can be used in traditional hair burning and hair saving unhairing system as well as in modern environmental friendly unhairing system in combined with DOWELLON UHE,DOWELLON UHB and DOWELLON OPF. This system is free of sulphide and lime.
In traditional hair burning system, 1%-1.5% DOWELLON UHA can be used together 0.5%-1.0% sulphide to remove the hair completely; we suggest using DOWELLON UHA at the beginning of unhairing process.
In hair saving system, add 1%-1.5% DOWELLON UHA together with 1%-2% lime, the hair trunk is immunized by the lime as the pH value increase, at the same time DOWELLON UHA penetrates and loosen up the hair root and remove the hair trunk completely in one piece from the grain surface.
In environmental friendly system, the hides are pre-treated by adding 0.3-0.6% unhairing enzyme DOWELLON UHE for 1-2 hours time, followed by 1%-2% DOWELLON UHA and 0.5%-1.0% DOWELLON UHB, add 1.5%-2.5% sodium hydroxide and 0.5%-1.0% DOWELLON OPF as the next step to achieve satisfactory results in unhairing and open up of collagen fibre.
120L plastic drum
1 year storage in sealed original package at 5-35℃.Bags should be tightly resealed each time after material is taken from them, and their contents should be used up as soon as possible after they have been opened. Direct contact with this product may irritate skin and mucous membrane，rinse with running water if contacted with skin. Non-dangerous chemical.