A waterproof zipper, as the name suggests, is specially made to avoid any liquid penetration. The most common application of waterproof zippers is on outdoor equipment to provide protection against the rain. However, the application is not solely limited to that, as we can find them on many products such as ski suits, cotton-waded jackets, diving suits, raincoats, tents, waterproof shoes, fishing wears, and waterproof bags.
There are a lot of factors you should consider when purchasing and using waterproof zippers. We will first discuss several key factors that can help you get the right fit for your needs.
For patterned or printed fabrics (i.e. logo), you should pick waterproof zippers dedicated for printed fabrics (printing series waterproof zippers).
If you need temperature resistance (both high and low), you should choose TPU waterproof zippers or imported PU waterproof zippers.
For uniforms with special signs (i.e, police or army uniform), you should choose reflective waterproof zippers to maintain visibility.
For heavy-duty tests and industrial applications, numerous pulling back and forth of the zipper is often involved, imported PU waterproof zippers are the best choice.
Imported PU waterproof zippers are generally the most expensive choice, followed by TPU waterproof zippers. For a tight budget, PVC waterproof zippers are generally the most affordable choice.
3. Waterproof Quality
The width of the center seam greatly determines the waterproof performance. The wider the central seam, the worse generally the waterproofing quality.
4. Waterproofing Film
You should choose a film that won't come off easily after repeated washing or exposure to low and high temperature. A high-quality film will guarantee the durability of the waterproof zipper.
5. Color Differences/Color Fastness
When choosing colored waterproof zippers, you should consider the color difference between the zipper tape and the film. Ideally, the color difference should be controlled below 5% to maintain aesthetic balance.
For maximum color uniformity on the surface without little to no turbidity point, colored film waterproof zippers are recommended.
You should also consider the color fastness (resistance to running or fading) when purchasing waterproof zippers.
6. Surface Smoothness
The film surface should feel flat and smooth. Generally, the smoother the film, the better.
Waterproof zippers should be environmentally friendly, passing the OEKO-TEX100 standard certification or other similar eco-friendly certifications.
In short, always opt for reliable waterproof zipper suppliers and try to maintain a balance between the application, waterproof quality, budget, waterproofing film, color differences/color fastness, eco-friendliness and surface smoothness.
Tips for Proper Use and Maintenance
In the previous part, we have discussed the basic tips you could follow while purchasing waterproof zippers. Now, we will continue by discussing several tips for using waterproof zippers.