How to avoid fatty spew on leather? Download our free whitepaper on fatty spew and learn about its background, where it comes from, and what can be done to prevent its formation. On processed leathers it is sometimes observed that, over time, an undesired white milky film appears on top of the leather. This white layer often gives rise to debates on its origin and causes, and in some cases leads to a claim for damages. The phenomenon described is called ‘fatty spew’. The possible sources of fatty spew may be of diverse nature, they are similar in one respect. They always originate from high melting point substances. Download the whitepaper ‘Fatty Spew’ My email address** First name** Last name** Company name** Stay informed Please keep me informed about the latest news on Royal Smit & Zoon and the leather industry.Consent* I have read and accepted the Terms & conditions and Privacy Statement. Δ What is fatty spew? All fats have a tendency to migrate through the leather when they are not irreversibly fixed to the matrix. Free saturated fatty acids, as all other substances, are sensitive to the influence of temperature. One of temperature’s effects is that it can change a substance’s appearance. The reason for the white layer on the grain is the high melting point, which is about 60°C to 70°C for all of the substances causing fatty spew. Below this temperature they begin to solidify but remain undetectable to the eye. Interesting for you Discover more on Wet End C14 explained C14 or carbon-14 is the longest-lived radioactive isotope of carbon, whose decay allows the accurate dating of archaeological, geological and hydrogeological artifacts. C14 relates to the renewable carbon content of a material and can be directly measured using analytical tools. Leather, a renewable material Leather starts with a hide or skin, which is a natural material and 100% bio-based. By using products in the leather making process with a high level of bio-based content, the level of renewability of the material remains high. Whitepaper Chrome VI In this whitepaper on Chrome(VI) you can learn about its background, its relation to wetblue, the risks, ways to avoid it and available test methods. Wet End Discover Stay informed Receive the latest company news and industry updates Subscribe Share this:
