1, phoenix eye, button door, flat eye of the common name is "buttonhole".

Also called "button hole".

The phoenix eye is the opening of the hole is wide at one end and narrow at the other, and with a small tail, like the eyes of the phoenix. Usually the phoenix eye is used for I-buttons (for denim), or larger buttons on jackets.

Flat eyes, on the other hand, are those that are the same width at both ends of the hole, and are usually used on men's shirts.

2, hit the date, also do bar-tack. because of its shape like a date, the term to do set knot.

Used as a fixing and increase the tension. Example is very simple, jeans on the ear (commonly known as pants nose child) of the top and bottom of the date.

It is connected to the pants by the dates, so it will be more solid. The date on the jeans is the most common, on the placket, the end of the safety line on both side seams, the ends of the back pockets, and so on.

Expanded:

Phoenix eyes, also known as buttonholes, is a Chinese word for the English button-hole. It refers to the small hole that covers the button, which is called phoenix eye because it is shaped like a human eye. Open phoenix eye is a process in the garment industry, usually the last process in the processing chain, after the open phoenix eye is washing.

Phoenix eyes are mainly used in the apparel industry, divided into practical phoenix eyes and decorative phoenix eyes. Practical phoenix eye is cut, with practical connection function; decorative phoenix eye is not cut, play a decorative role, enhance the aesthetic design.

Buy clothing, formal way of clothing or branded clothing, practical phoenix eyes are cut, because the current machine eye technology is much higher than the artificial eye technology, machine eye clothing beauty and accuracy is much higher than artificial.