In the buttons we touch everyday, the materials can be roughly divided into three types: plastic buttons (resin, plastic), metal buttons (copper, iron, alloy), natural buttons (shells, wood, coconut shells, bamboo) . Each different material needs to be processed into buttons by different processes. However, after some buttons are formed, it is difficult to judge its material appearance. In actual use, how do we distinguish between these different button materials? China Button Industry Network will take you to find out! In plastic buttons, it is divided into plastic buttons and resin buttons. Among them, plastic buttons are generally made by die-casting, so there is a line at the edge of the button. This line is also referred to as a mold line. Some factories use aesthetic processing to remove the line. In comparison, its weight is slightly lower than that of the resin. Most of the resin is carved by mechanical and then polished, so the surface is without any traces, more clean and smooth. However, the resin buttons are relatively easy to break and will soften when placed in boiling water. For metal buttons, there are three kinds of copper buttons, iron buttons and alloy buttons. To distinguish between copper buttons and iron buttons is relatively simple, just use the magnet to try it. Another method is to scrape off the plating on the surface with a hard object. The brass buttons will have a brass color and the iron buttons will be black. The alloy button is formed by die-casting, and the inside is solid, so it has a mold line and is heavy. In the molding process, it is basically polished and polished. Want to learn more about buttons: accessible
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How to distinguish the button material