What this guide covers
1. Waterproof vs airtight zippers
Both keep water out, but they are not the same product — and they need different manufacturing precision.
| Type | Seals against | Typical uses |
|---|---|---|
| Water-resistant zipper | Splashes, light rain | Jackets, bags, everyday outerwear |
| Waterproof zipper | Sustained water exposure | Outdoor gear, sportswear, marine products |
| Airtight zipper | Water and air/pressure | Dry suits, protective clothing, inflatable and medical products |
The waterproofing comes from a coated or laminated film bonded over the zipper chain. Airtight zippers demand the tightest sealing tolerance and the most consistent lamination — which is why the equipment grade matters.
2. The machines that make waterproof zippers
Waterproofing is added on top of a standard zipper line. The dedicated machines:
- Coating / glue machine — applies the adhesive or coating base layer to the tape.
- Film lamination machine — bonds the waterproof film onto the chain under heat and pressure.
- Metallization / film coating machine — for metallic or reflective finishes on plastic zippers.
- Curing oven — sets the coating and film at a controlled temperature.
- Cutting & incision machine — trims and finishes the sealed zipper precisely.
- Logo printing machine — optional, for branded waterproof tape.
See Jeso's waterproof zipper machine range for the equipment that covers each step.
3. The waterproof zipper production line
A complete waterproof zipper line runs in this order:
- Produce the base chain on a standard plastic or nylon zipper line.
- Apply the coating or adhesive base layer.
- Laminate the waterproof film onto the chain.
- Cure the assembly in a temperature-controlled oven.
- Cut and finish with the incision machine.
- Mount sliders and stops, then test for water and air tightness.
4. Choosing waterproof zipper equipment
Three factors decide the right line:
- Grade target — water-resistant gear and airtight products need different sealing precision. Buy for the grade you sell.
- Film compatibility — confirm the machine handles the film type and width your customers specify.
- Consistency — a leaking seam fails the whole zipper. Stable lamination and curing control is worth paying for.
Building a waterproof zipper line?
Jeso (Primo Zipper Group) manufactures the full range of waterproof and airtight zipper equipment — coating, lamination, curing, cutting and printing machines — backed by 40+ years of experience as a direct China factory.
Request a Free Quote5. Frequently asked questions
- What is the difference between a waterproof and an airtight zipper?
- A waterproof zipper blocks water with a coated or laminated film. An airtight zipper is a higher grade that also seals against air and pressure — used in dry suits, protective clothing and inflatable products — and needs more precise sealing equipment.
- What machines are needed to produce waterproof zippers?
- On top of a standard line: a coating/glue machine, a film lamination machine, a curing oven, and a cutting and incision machine. A logo printing machine is optional.
- Can a standard zipper machine make waterproof zippers?
- No. Standard machines make the base chain; waterproofing needs additional coating, lamination, sealing and curing equipment added to the line.