We will see buttons with different materials in the process of purchasing buttons, and how should we identify the buttons of these materials? If you give you a bunch of buttons of different colors and styles, can you quickly determine what kind of buttons they are made of? In fact, there are traces to identify the material of different buttons.
In our common buttons, it can be roughly divided into plastic buttons (plastics, resins), metal buttons, natural buttons, etc. Each button is different in the production process. Although some buttons look the same in appearance, the use of internal materials is totally different. Like our common Yiwu resin buttons, Yiwu metal buttons, Yiwu natural buttons, these are conventional buttons to distinguish it is relatively simple.
For plastic buttons and resin buttons, since the plastic buttons are all formed by die-casting, there will be a line at the edge of the button. This is called a mold line. Some factories may remove this line during subsequent processing, and the appearance will become close to the resin button. However, the same amount of plastic buttons are lighter than resin buttons, and the surface of the resin buttons will be smoother, but it is easily scratched and chipped. If placed in water, the resin buttons may also become soft.
In contrast, copper buttons and iron buttons are much more distinguishable. They can be tested with magnets, or they can be scraped off with a hard object. If the brass is brass, the inside is a copper button. If it is black, Iron button. In the metal buttons, there is a type of button called alloy buttons. Due to the die-casting, the alloy buckles are relatively heavy, and it will obviously feel that the interior is solid.
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