Detailed classification of cloth bag buttons?

We gave a general introduction to the classification of cloth bag buttons in the "cloth bag buttons", and we will give a detailed explanation on the following topics

We know that cloth wrapped button is a kind of button that wraps cloth (or leather) on the button. Therefore, it can be called cloth wrapped button or cloth wrapped button, leather wrapped button or leather wrapped button. The following classification takes cloth wrapped button as an example (button can also be written as button, and the button described in this article is the same as button)

The raw materials of cloth wrapped buttons include plastic, aluminum, copper, and iron, which are formed by combining with fabric or leather coating. However, cloth wrapped buttons are usually classified not by material, but mainly by use: cloth wrapped buttons and cloth wrapped buttons