What is the difference between waterproof and water-repellent in backpack customization?

What is the difference between waterproof and water-repellent in backpack customization?
Anyone who knows something about the backpack customization industry knows that the waterproof performance of backpacks can generally be divided into three categories: non-waterproof, water-repellent, and waterproof. Most current backpack fabrics have a certain degree of water-repellent function, but backpacks with waterproof functions are not. not much. Many people are not very clear about the difference between water-repellent and waterproof backpacks. Today, the Aifree luggage manufacturer will introduce it to you. Let’s learn about it together!

1. Material difference

The biggest difference between a water-repellent backpack and a waterproof backpack is in the choice of materials. Water-repellent backpacks are generally made of ordinary fabrics, but a waterproof coating is added to the fabric to block the entry of some rainwater. When the backpack hits the rain, the rainwater will The water droplets in the shape of lotus leaves spread out smoothly and will not directly penetrate into the bag, thus having a certain waterproof effect. But if it rains heavily, it will be of no use. Moreover, the coated material has a certain service life, and it will become useless after a long time. Most of the materials used in waterproof backpacks are air-impermeable or breathable and water-impermeable. The coating is thicker, and the other side even has a film on it, which has better waterproof performance.

2. Differences in production technology

The production process of waterproof backpacks is more complicated than that of water-repellent backpacks. Many fully waterproof backpacks require mold opening when making them. The most common ones are some hard-shell backpacks. These all use the mold opening process, while water-repellent backpacks basically only need Just go to the traditional sewing process.

3. Differences in accessories

Regardless of waterproof backpacks or water-repellent backpacks, most manufacturers use zipper openings, which involves the choice of zipper accessories. Most water-repellent backpacks choose ordinary zippers, which are not waterproof and breathable, while waterproof backpacks choose zippers that are waterproof Yes, it will not penetrate when exposed to water, which can more effectively protect the items inside. There are several ways to open the mouth of a waterproof backpack: generally, the rolled mouth is used, that is, the bag mouth is aligned and then folded and fixed with buckles or other components to achieve a sealing effect. The other is a bayonet-type sealed bag mouth, which is mostly used for small waterproof bags and is not practical for large waterproof bags. Another type is the airtight zipper opening. Airtight zippers are waterproof zippers with a high waterproof level. This type of zipper is expensive and is generally used in advanced waterproof backpack openings, outdoor ice bags, and waterproof waist bags.