What is Masujiro
Unique product
The tin alloy we handle is a new material "ETENA" jointly developed by the Tokyo Antimony Crafts Cooperative and the Tokyo Metropolitan Industrial Technology Research Center.
It is stronger than 100% tin and has a luster similar to silver.
Using this "ETENA" as a material, unlike the manufacturing method with Tinware such as Kyo-tin, Naniwa-tin, and Satsuma-tin, which have a history of 300 years, we put hot water (melted tin alloy) in the mold and use it as an advanced technology.
A major feature is that it incorporates a traditional Japanese technique called the "Mold hand casting molding method", which is a patented manufacturing method in which craftsmen who have a certain skill cast one by one.
By this material and manufacturing method, We succeeded in creating a clear finish on the mirror surface of the tin surface, which cannot be achieved with overseas products and conventional tinware.
The finished tinware shines like a silver product.
Currently, only our company has the technology of convex pattern of mirror finish even in the world.
This manufacturing method has been designated as a "Traditional Craft" by the Japanese Minister of Economy, Trade and Industry in 2015 .
Feature of "Masujiro"
"Masu" has been familiar to Japanese people since ancient times, but at present, there is no metal "Masu", only wood and plastic.
In order to cast "Masu" with metal material, a method of realizing a thick square structure by press working and welding requires a welding technology that is almost impossible.
The usual technique had the big drawback that the inside surface was not beautifully finished.
So, we thought that it could be achieved only by the method of pouring the mold, but even with this method, there was a drawback in that very high technical skill is required and the product itself becomes very heavy by using the metal material.
Therefore, the reason why metal materials are not suitable for “Masu” is that they are only made of wood or plastic.
However, Masujiro has become a tin "Masu" by realizing a technically difficult "hollow structure" and reducing its weight.