In recent decades, chrome tanning has been the most common and dominant form of tanning. Compared to its predecessor vegetable tanning, chrome tanning is much faster. But with sustainability now an industry priority, the environmental disadvantages of chrome tanning are becoming harder to overlook. In line with their commitment to responsible chemistry, Stahl offers a metal-free tanning system that enables tanners to produce high-quality leather more sustainably: Stahl EasyWhite Tan®.
Stahl EasyWhite Tan® enables tanners to produce leathers of the highest quality. Specifically, leather tanned using Stahl EasyWhite Tan® is soft and smooth, while remaining dimensionally and thermally stable. The collagen fibers are less damaged during the tanning process since no pickle is used. This results in a tighter grain, less nubucation, and decreased vein visibility. Additionally, the stronger fibers make the leather more durable, tear-resistant, and versatile, enabling the production of high-quality leathers that are thinner and lighter than ever before.
Improved environmental impact
The production of these outstanding leathers has a significantly improved impact on the environment. For instance, Stahl EasyWhite Tan® enables tanners to reduce the salt content of wastewater by at least 80%. What’s more, by using a metal-free tanning system, tanners can reduce chemical usage by a third. And finally, water usage can also be halved: in conventional chrome tanning, around 12,000 liters of water are required for the production of 1,000 hides. By contrast, with Stahl EasyWhite Tan®, only 6,000 liters of water are required.
Increased process efficiency
Besides reducing environmental impact without compromising on leather quality, Stahl EasyWhite Tan® also offers tanners the opportunity to shorten the tanning process. Specifically, both the pickling and basification process steps required in chrome-tanning are no longer necessary – enabling time savings of around seven hours. Along with this, the required working and machining time and risk of manufacturing errors also decrease.