Concerntrate on tanning and varied quality checks
help us to deal with all kinds of orders.
PROUD OF TANNING
Our uncompromising pursuit of tanning quality
Vegetable tanned leather
We use thick enough hide, quite rare tanning pits, mimosa from Brazil and take a month to make our hard, donnot strech vegetable tanned leather. During that period, we monitor the concertraiton and the temperature of the agent carefully. And during the drying process, we decrease the unevenness by adjusting progress speed.
Chrome tanned leather
We are one of those first companies that introduced chrome tanning techniques into this country. After a century's accumulation, we have reached our best solution about temperature, basicity of chrome and pH in the drum. And we carefully manage them everyday. Furthermore, as the conditions of each season are different, we also take them into account by checking the leather and do necessary adjustments all the time.
Wet white leather
In Japan, only we make this kind of leather now. It uses a special and eco-friendly tanning stuff. By monitoring the process thoroughly, we can get soft, heat resistant leather. Then we add vegetable tanning stuff during retanning, to adjust its feeling and characters, and finally we can make really strong heavy retanned leather.
Leather goods like shoes and bags, have different quality requirments depends on species, use and manufacture method. In Sanyo, we have our own physical property test room. There, we can do over 10 different tests, like "Breathability", "Tensile strength", "Ball-burst test", "Rubbing fastness" etc.. These years, we also make nonflamable leather, antibacterial leather and anti dry cleaning leather.
Hides comes into our factory in wet-salted condition. We procure hides mainly from North America and Europe.
Treat hides with water, to clean them, remove salt and other soluble matter and to rehydrate and soft them. We adjust the time and chemicals according to hides' conditions.
After fleshing, we treat hides with a concentrated solution of sodium sulphide to remove the hair.
After all the beamhouse process finished, tanning process will make hides heat resistant and flexible and change "hide" into "leather". It is the most important step in the whole leather manufacture.
Retan is to give already tanned leather a further tanning treatment tyo modify its properties, then add dyeing stuff to give it required color, at last treat leather with fat to make it soft.
Remove the water to make leather stable and ready to finish. Veg-tanned leather is usually air-dry, while we use machines like vacuum to dry chrome tanned leather and wet white leather.
A series treatments applied to leather to give it the desired properties, such as protect the grain side, or give it a beautiful appearance.
Before delivery, we will check leather carefully to make sure they have met JIS standard, customers' standards or our own standards.
Use leather measuring machine to measure the size of leather, then we carefully pack and deliver them to our customers.
If you are interested in our leather,
or you have any questions about leather,