How about the waterproof effect of the real outdoor waterproof bag?

Outdoor travel, the waterproof function of waterproof bags is particularly eye-catching. What is a waterproof bag? Outdoor waterproof bags, as the name suggests, are waterproof bags, but few people know where the waterproofness of bags is really reflected? Then the real outdoor How is the waterproof effect of the waterproof bag?

1. Understand the reasons for the waterproof function of the waterproof bag

Outdoor waterproof bag, the waterproof function comes from its fabric. Generally, the surface of the fabric is treated with a waterproof agent, or the surface of the fabric is coated with plastic, PU, PVC, PA, etc., to make the fabric waterproof. When testing whether the waterproof bag has a waterproof coating, you can test the fabric with water on site. If the fabric has obvious water droplets after watering, it is a waterproof bag.

2. The waterproof function strength of the waterproof bag

After understanding the waterproof fabric, let's understand the waterproof function strength of the waterproof bag. First of all, we have to know the waterproof index of the fabric. The standard of the waterproof bag is the water pressure resistance - how many MM water columns can be supported on each square centimeter area, and it is impervious to water for one hour. The waterproof degree of general waterproof nylon is 1000-2000mm, which can withstand short-term rain; 5000mm rains for a long time; the US military standard is 7000mm. The key point of all waterproof indicators is not how much water is waterproof, but the pressure and time of the water. A simple understanding is that the size and speed of raindrops and the time of exposure to rain will cause different waterproofing effects under natural conditions.

3. Durability of the waterproof bag

The durability of the waterproof bag is to go through multiple tests of time, high torture and pressure, so it is important to find a light and wear-resistant material! In addition, the waterproof bag itself has the reliability of the sewing thread, the zipper and the opening If the contact point between the strap and the main body of the waterproof bag is not strong enough, you should also pay attention to the strengthening treatment of the waterproof bag and the double-layer treatment of the bottom of the waterproof bag.