Corichem products range from soaking to top coats24 October 2005
Corichem have a great number of new products which range from the beamhouse, through tanning and retanning to the finishing department. Here we list just a few.&rtreturn;In the field of soaking agents, Sapol RV is a product specially developed to help the absorption and the dispersion of the water inside the leather fibres, so that there is a fast and uniform soaking during the beamhouse phase and an excellent re-wetting of the crust leathers. Sapol RV is a combination of anionic and non ionic surfactants, of new concept that combines an excellent efficiency with a good biodegradability. The recommended amount of use varies between 0.3%-0.5%.&rtreturn;Corizim SB 1300 is an enzymatic auxiliary with a high soaking action used for dry, fresh salted and fresh hides and skins. To develop the efficiency of this product to the maximum, it is recommended for use at 26-27°C and in a pH range of between 7 and 11. Corizim SB 1300 is used in quantities that can vary between 0.1 and 0.5%, depending on the type of hides and skins to be soaked.&rtreturn;For liming, Corilime H is a specific liming auxiliary agent. It is used as a levelling agent for the hides and skins, promoting the elimination of wrinkles and skin yield which is estimated at nearly 1.5-3.5%. Depending on the kind of leather, the required amount of Corilime H can vary from 0.7% to 1.2%. The grain of leather treated with Corilime H appears very fine, clean and smooth. Corilime H is especially used in the processing of bovine leather. Apart from considerably increasing its yield, thanks to the elimination or smoothing of wrinkles, Corilime H avoids belly boarding and related loose grain. The product is not sensitive to iron salts nor to alkaline salts.&rtreturn;In deliming and bating, Solecal SCA/B is a deliming agent for pelts to thoroughly remove calcium salts in the skins. It acts fully and evenly by removing salt deposits from the pores and from hair bulbs. Washing subsequently allows perfect bating and uniform tanning, with less likelihood of blots appearing on wet-blue skins. At the end of deliming, the skin does not swell and the final pH is always lower than 7, which is very important for continuation of processing. Solecal SCA/B is used in amounts of 1-2 % in the float with water at 35°C.&rtreturn;Corizim P 100 digests keratin residues as well as any un-dissolved interfibrillar matter. Its bating action cleans the grain effectively and makes the skins elastic and fine without damaging their structure. Corizim P 100 can be used for various types of leather, both vegetable and chrome tanned. When used in low quantities, it is ideal for skins that should have a firm, tight touch; when used in larger amounts it is ideal for softer, mellower skins. Generally, Corizim P 100 is used in a single deliming and bating bath, both in paddles and drums; the recommended amount varies from 0.5% to 3% of the pelt weight.&rtreturn;For degreasing, Sapol ECO is a combination of powerful ecological surfactants. It helps to vigorously emulsify all natural fats. It can be used alone without any auxiliaries, both in re-wetting and soaking and in deliming, bating and de-pickling stage. It is especially suitable for degreasing goatskins, lambskins, bovine packers and pigskins. Recommended amounts for use vary from 0.5% to 1% depending on the kind of leather.&rtreturn;Sapol VT is a combination of powerful ecological surfactants and polar solvents. Thanks to the synergy of its components, Sapol VT enables the combination of effective degreasing and emulsifying capacity together with good wetting. These properties allow the use of Sapol VT both in soaking and re-wetting or during the deliming, bating or de-pickling stage. Sapol VT is suitable for the production of articles with perfect dye levelness and good mellowness of finished skins. Indeed, the grain of the skin appears fine and even and leathers are never too loose. Recommended amounts for use vary from 0.5%, when European or normally fat hides and skins are processed, up to 1% when very fat hides such as packer bovines have to be degreased. &rtreturn;In the category of beamhouse auxiliaries, Benisol B 110 is an antibacterial specifically formulated for the complete microbial protection of the hides in baths. A percentage of about 5-0.1% of Benisol B 110 is recommended, calculated on the weight of skins. &rtreturn;Benisol B 500 is an antibacterial with large action range against bacteria, fungus, algae and mildew. Its excellent activity derives from the combined action between a mixture of phenols, able to confer a high antibacterial and fungicide power. Skins are protected from micro-organisms for a long period of time because they easily absorb Benisol B 500. Quantity of use and application methods of Benisol B 500 can vary from tannery to tannery and they are mainly influenced by the thickness and the content of natural fats into the skins and by the stocking time of the treated hides. The percentage of use varies from 0.1% in the pickling bath to 0.4% for vegetable and chrome tanned skins. &rtreturn;Basificante TB is an alkaline powder with uniform and fine distribution of particles and slow solubility in acid solutions. Added to tanning baths, it causes a gradual pH increase without sharp variations, as happens with bicarbonates, soda, mix containin dolomite. It produces a perfect distribution of chrome throughout the leather. Consequently, the grain appears very fine. Marine magnesia oxide reacts with sulfuric acid and forms only soluble salts. Other products, containing calcium ions, form an excessive quantity of insoluble salts within the leather with consequently negative effects on the levelling of dyeing (areas not dyed) and on dye crossing throughout the hide.