Guidance and tips for purchasing waterproof zippers

A lot of factors should be taken into consideration when you are purchasing waterproof zips, ranging from the application of these zips to the environmental protection.

1. Application

 For heavy-duty tests that involve numerous pulling back and forth of the zips, you should select imported PU waterproof zips.

For better resistance to low/high temperature, you should choose imported PU waterproof zips [-80℃, 200℃] or TPU waterproof zip [-40℃to-50℃, 100℃-180℃].

 For uniforms with safety signs, for example, the traffic police uniforms, you should choose reflective waterproof zips.

For custom-made fabric patterns/logo printing, you should pick the printing series waterproof zips.

2. Budget

Imported PU waterproof zips are the most expensive, followed by TPU waterproof zips.

3. Waterproof Effect

The width of central seam is closely related to the performance of waterproof zips. Extremely wide central seam will exert a negative effect on the waterproof effect.

4. Waterproof Film

The film won’t come off or tear easily regardless of exposure to low temperature or repeated washing. A high-quality film also guarantees a longer service life.

5. Color Difference/Color Fastness

 Colored waterproof zips should feature minimum color difference. The color difference between the film and the zip tape should be controlled below 5%.

  If you would like to achieve color uniformity on the surface with no turbidity point, we would recommend color film waterproof zips.

 Apart from color difference, the color fastness of waterproof zips should also be taken into account when you are making a purchase.

6. Appearance

The film surface should feel smooth and flat.

7. Degree of Smoothness

The more smooth, the better.

8. Environmental Protection

Waterproof zips should be environmentally friendly, passing the certification of OEKO-TEX100 standard.

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