In terms of bag making, the production process is a very complex process, and if the production of a bag needs to be completed, many processes need to be coordinated and produced, and each process in this process is very important.  If there is a process that is not done well, the bag will be of little use, so every process involved in bag making is very important. Car lines are very important for making bags to maintain the shape, and Jonah Leather Goods is very particular about using lines.

Commonly used threads for handbags are cotton thread, transparent thread (fish silk thread), nylon thread, three-strand nylon decorative thread, etc. The quality of nylon thread is the best, and the thread of this material will be used in general leather bags. There are different thicknesses of thread, if you want to sew more firmly, use a thicker thread. The strength and thickness of the thread can indirectly reflect the shape of the overall bag. On the contrary, the thread of the poor product is thinner, which is easy to break without light feeling, and even the angle of the sewing stitch is unstable.

The outer part of the bag body generally uses thicker nylon thread, the inner part generally uses thinner nylon thread, and the inner lining generally uses cotton thread. The color of each part of the car line is required to match the color of the fabric, visually consistent, and the car line is smooth and tidy. The stitches of the higher-grade bags are relatively fine, and if they are too sparse, the tear strength will be affected. The stitch density requirement of the handbag industry is "one inch seven and a half needles", and Qiao Na Leather Co., Ltd. strictly follows this standard in the production of goods.

· Detailed explanation of car line classification

1. 402 polyester thread (polyester-cotton thread) open thread is generally used for denser and thinner materials, or for positioning, the normal open thread pitch is: 3CM9.5 needle; dark thread is: 3CM9 needle; positioning is: 3CM9 needle ± 1 Needle.

2. 202 polyester thread (polyester-cotton thread) is very commonly used, and boutique bags are generally used for car lining or positioning. Generally, the needle distance of the open thread is: 3CM9 needle; the dark thread is: 3CM8.5 needle; the positioning is: 3CM8 needle ± 1 Needle.

3. 210D nylon (high-strength thread) is generally used for boutique and high-end bags, and is mostly used on the surface of bags. Generally, the needle distance of open thread is: 3CM9 needle; the dark thread is: 3CM8.5 needle.

4. 500D nylon (high-strength thread), commonly used in boutique bags with PU artificial leather and surfaces that need to be decorated with thread, generally PU and canvas needles are 3CM8 needles, and fabrics are 3CM8.5 needles.