The smaller the waterproof bag, the higher the production difficulty. Small waterproof bags, such as mobile phone waterproof bag and waterproof waist bag. Among them, mobile phone waterproof bag is easier to make. After all, it is planar, but the waist bag is much more complex. It is not twice as difficult to make it into three-dimensional 3D.

Podragon brand is the ancestor of all waterproof waist bag. It has accumulated rich experience in the design and production of small waterproof bags.

The materials involved in the waterproof waist bag mainly include waterproof fabrics that can be welded with high frequency, such as TPU membrane surface fabrics, and waterproof zippers, which can integrate closely with each other and are not easy to tear.

Because the cutting piece is flat, but the products produced are three-dimensional, it is necessary to make bending treatment on some surfaces, that is, there is spline design. Therefore, in the fixture of high-frequency welding, we should have three-dimensional thinking and the idea and test of energy production.

For those who are not good at making small waterproof bags, the first is thinking, the second is technology, and the third is methods and experience. If there is a short board, the product rate is very high and the cost is high.