A modern semi-rapid vegetable tanning with high exhaustion [premium content]
A new approach to vegetable tanning has been developed that brings together the technical advantages of both pit and drum vegetable tanning systems. The system operates with a very high uptake of vegetable tannins, and eliminates the need for
common salt in the pickle stage that normally precedes drum tannage.
World Leather - Dec12/Jan 2013
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A new green leather [premium content]
As a result of close cooperation between N-Zyme BioTec and LGR, a tanning process has been developed and optimised on bovine hides using activated olive residues.
World Leather - Apr/May 2012
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Innovation Part 1: Recycling and regeneration [premium content]
Twenty world standard tanneries have opened their doors for in-depth study as part of Tannery of the Year Awards 2009 and 2011. Considerable technical information has been published in World Leather following these visits, and there has been an emphasis on environmental aspects. This article is the first in a series that picks out some of the highlights from the innovation stories these top tanneries have shared with us.
World Leather - Oct/Nov 2011
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Today’s view on vegetable extracts in wet-end processing [premium content]
Vegetable tannins are compounds of vegetable origin from various parts of trees and plants. They have been known and used by tanners for over two thousand years, but until the 19th century they were mainly used in the form of raw, untreated material such as bark. Then chemical companies began to increase the tanning content yield by extraction using an autoclave followed by spray drying. This resulted in extracts such as chestnut or mimosa with more than 70% concentrated tanning power.
World Leather - Oct/Nov 2011
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Vegetable tannins are compounds of vegetable origin sustainable organi... [premium content]
This paper describes an innovative organic tanning system suitable for a wide range of leather articles. The system is not based on metal salts or aldehydes and produces a very white and stable intermediate. As the pickle step is no longer necessary and any potential excess tanning agent hydrolyzes to toxicologically uncritical products, both the effluent and the resulting shavings present tangible advantages to the tanner.
World Leather - Oct/Nov 2011
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Balancing innovation with commercial reality [premium content]
In today’s commercial world, innovation usually results from a ‘what if ’ or ‘can we get rid of a problem’ discussion. Innovation for innovation’s sake is a luxury that many major companies, with multiple stakeholders, simply cannot afford, although it won’t necessarily prevent an individual pursuing an idea.
World Leather - Oct/Nov 2011
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Wet-green leather: the ultimate green tannage [premium content]
A new tanning system has moved from concept, through the development stages and now into manufacture on production scale. Based on initial development work by Lederinstitut Gerberschule Reutlingen in conjunction with N-Zyme BioTec GmbH, this new tannage has been turned into a practical reality by Heller-Leder.
World Leather - Oct/Nov 2011
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Studies on assembly and de-assembly of collagen [premium content]
Collagen type I is the main component of skin. There are still unanswered questions in the mechanism of tanning that make it necessary to continue research on this topic. There is a need to understand tanning more clearly, or rather the interaction between collagen and tanning agent.
World Leather - Oct/Nov 2011
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The roots of raw material [premium content]
National Beef’s ambition to make its wet blue plant in Missouri an example for the whole industry is well on the way to becoming true.
World Leather - Oct/Nov 2011
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X-Tan – new leather qualities by sustainable organic tanning [premium content]
This paper describes an innovative organic tanning system suitable for a wide range of leather articles. The system is not based on metal salts or aldehydes and produces a very white and stable intermediate. As the pickle step is no longer necessary and any potential excess tanning agent hydrolyzes to toxicologically uncritical products, both the effluent and the resulting shavings present tangible advantages to the tanner.
World Leather - Oct/Nov 2011
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