What chemical raw materials are used for plastic buttons?

Button materials are generally divided into plastic (resin, plastic), metal buttons (copper, iron, alloy), natural buttons (shell, wood, coconut shell, bamboo). All kinds of materials need to be made into buttons, and the process is different. Some buttons look the same, and even people in the industry can not distinguish them clearly with their eyes. Therefore, damage can only be distinguished by scraping the coat.

Buttons are distinguished from plastic buttons and resin buttons: plastic buttons and resin buttons. Plastic (including various plastics) buttons are generally die cast, so there will be a line on the edge of the button. This clamping line may be removed in subsequent processing by some factories, but its weight will be lighter than that of resin (of course, some special plastics will be heavy). Resin buttons are mechanically carved and then polished, so the surface is smooth without full mold line. But it is fragile, and the surface is easily scratched. It will become soft in boiling water.

How to distinguish copper buttons from iron buttons: buttons made of copper and iron materials can be known by using a magnet and scraping off the electroplated layer on the surface with a hard object. The brass color (gold) on the copper button surface. The iron buckle is black, which is the color of the raw material.

How to determine whether it is an alloy button: the alloy button is relatively heavy and is made by die casting. All die lines are usually polished and polished, which may not be visible, but they are heavy and solid.