Splash-proof zipper VS Waterproof zipper?

Waterproof zippers on shoulder bags come in two main types: splash-proof zippers and fully waterproof airtight zippers. Let's explore the differences between them and whether they are made of coated webbing.

Splash-proof zippers are typically made by laminating a layer of PU film onto a nylon webbing zipper tape. This construction creates a barrier that can withstand light splashes and moisture, preventing water from seeping through the zipper teeth. While splash-proof zippers offer some degree of water resistance, they are not fully waterproof and may not provide adequate protection in heavy rain or when submerged in water.

In contrast, fully waterproof airtight zippers are constructed differently. They feature zipper teeth directly molded onto coated webbing, creating a 360-degree waterproof seal. This design ensures that even when fully immersed in water, the zipper remains watertight, keeping the contents of the bag dry. Fully waterproof airtight zippers are commonly used in outdoor gear and specialized waterproof bags where superior water resistance is essential.

After knowing the difference and features of these two zippers, here we have some selection considerations:

1. If the bag does not require waterproofing or if it uses non-waterproof fabrics, splash-proof zippers with PU film may suffice.

2. For outdoor and water-resistant bags, fully waterproof airtight zippers made with coated webbing are recommended to provide reliable protection against water ingress.

In summary, waterproof zippers on shoulder bags can be made of either splash-proof laminated zippers or fully waterproof airtight zippers. While splash-proof zippers offer basic water resistance, fully waterproof airtight zippers made with coated webbing provide superior protection against water infiltration, making them ideal for outdoor and water-resistant bags where reliable waterproofing is crucial.