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What is a waterproof zipper?

May 11,2024 BSL

A waterproof zipper is a zipper with a waterproof function, usually used in outdoor sports equipment. Specially treated waterproof zippers are mainly used for waterproofing/rainproofing. Mainly used in raincoats, ski suits, down jackets, diving suits, tents, raincoats, waterproof shoes, fire suits, bags, outdoor jackets, fishing suits, dry bags, outdoor backpacks, soft portable, and other outdoor activity products. Coolers, seamless products, etc. Its design helps prevent moisture from seeping into the gaps between zippers, thus protecting the contents inside from moisture. This kind of zipper usually uses special materials and structures, such as coatings, sealing tapes, or waterproof zipper pullers, to ensure good waterproof performance in humid or rainy environments.


waterproof zipper

There are several common types of waterproof zippers


Coated zipper: This type of waterproof zipper covers the zipper chain with a waterproof coating, such as polyurethane or fluorocarbon resin. This coating effectively prevents moisture from penetrating the interior of the zipper.


Sealed zippers: Sealed zippers add a layer of sealing tape or strips on both sides of the zipper chain to prevent moisture from seeping in through the gaps in the zipper. This design provides a higher level of waterproofing.


Heat-sealed zipper: Heat-sealed zipper uses heat-sealing technology to seal both sides of the zipper chain together to form a completely sealed structure, thereby achieving a waterproof effect. This type of zipper is often used in products that require a high degree of waterproof performance.


Waterproof zipper pullers: Some zipper designs use waterproof zipper pullers. These heads usually use special structures or materials, such as silicone seals, to effectively prevent moisture from penetrating.

These different types of waterproof zippers differ in design and working principle, but their common goal is to provide reliable waterproof protection and are suitable for use in products with various outdoor and waterproof needs.


Waterproof zippers can be divided into several types based on their manufacturing materials



Plastic waterproof zippers: This type of zipper is typically made from plastic materials such as polyvinyl chloride (PVC) or polyurethane (PU). These materials have good waterproof properties and are suitable for general outdoor sports equipment and rain gear.


Metal waterproof zippers: Metal waterproof zippers are usually made of stainless steel or aluminum alloy, and the surface has been specially treated to enhance waterproof performance. This type of zipper is suitable for products that require a higher level of waterproofing, such as diving gear or military gear.


Coated waterproof zippers: Coated waterproof zippers add a waterproof coating, such as polyurethane or fluorocarbon resin, to ordinary zippers. This design provides moderate waterproofing and is suitable for general outdoor gear and rainwear.


waterproof zipper


Silicone waterproof zipper: This type of zipper is made of silicone material, which has excellent softness and waterproof properties. It is often used in products that require a high degree of waterproof protection, such as diving equipment, water sports clothing, etc.


Composite waterproof zipper: Composite waterproof zipper combines different types of materials, such as plastic, metal, and coated materials, to achieve better waterproofing effects. This kind of zipper is suitable for products that require higher waterproof performance.


These waterproof zippers made of different materials differ in waterproof performance, durability, and scope of application. The selection needs to be considered based on the specific use environment and needs.