The categories of buttons that we use more often in our daily lives are: plastics, metals, and natural products. After being processed into buttons by several materials, it is difficult to distinguish them. Then how can we distinguish these different buttons and let Xiaobian introduce them?
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 will be relatively easy to break and will become soft 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.
Buttons are of various types and are rich in materials. Some of the above distinctions are only a small part. Do you remember them?
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