alum tanning的意思|示意

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Alum tanning is a type of leather tanning process which uses an alum salt as a tanning agent. It was used in Europe from the 11th century until 1858, before it was replaced by chrome-tanning.

The alum tanning technique involves treating leather in a solution of alum, water, and some other ingredients such as wax and oil. The leather is usually soaked in the solution for 3-6 weeks, and is then dried, oiled, and finished. The leather produced through this method was often known as vegetable tanned leather, as alum is naturally derived.

Alum tanning produces leather that is hard and strong, but also has good light and water-resistant qualities. It is also durable and flexible, making it perfect for shoes, belts, wallets, and other leather accessories.

The main benefit of alum tanning is that it is a natural process, meaning that there are no toxic chemicals involved. It is also a renewable resource, making it a more sustainable choice than chrome-tanning.

Overall, alum tanning is a safe, natural, and sustainable way to create beautiful leather products. It produces leather that is strong, durable, and resistant to light, water, and abrasion, making it a great choice for any leather creation.