A Guide To The Heavy Duty Zipper and Its Applications

heavy duty metal zipper

What is a Heavy-Duty Zipper?
As the name suggests, heavy-duty zippers are zippers specially designed to withstand hard wear or extreme weather conditions, with common applications such as outdoor equipment, raincoats, tents, and many other similar types of equipment.

To achieve that purpose, the zipper can either be made with stronger materials or with more sophisticated technologies, especially on its teeth or elements.

Although heavy duty zippers can vary to each other from designs, materials, technologies, and many other factors, here are some of the notable characteristics you can generally find.

  • Teeth Size: Commonly, heavy duty zippers are equipped with bigger individual teeth than those of standard zippers. Due to this reason, commonly heavy duty zippers will require roughly 30% more force to open and close.
  • Tape: Contrary to popular belief, the zipper tapes utilized in both heavy-duty zippers and standard ones are similar, with few exceptions.
  • Stiffness/Rigidity: Heavy duty zippers are commonly made with a more rigid/stiff material, thus, they rarely follow the contours of the garment/fabric material. With that in mind, heavy duty zippers applications in wearable items are limited.
  • Strength: Heavy duty zippers are especially stronger when you pull them from the side.

One other common misconception is that the teeth in a heavy-duty zipper can be replaced individually. That’s certainly not the case, and if you broke one of the teeth,you will need to make a replacement as with standard zippers.

After we’ve understood the common characteristics of a heavy duty zipper, let us discuss different types and applications available on the market.

Applications of Heavy-Duty Zippers
Heavy-duty zippers are commonly classified based on its applications, and although there are many variations available on the market, here are some of the notable ones.

Two-Way Zippers
The two-way zipper is a common application for heavy-duty zippers. As the name suggests, two-way zippers can be opened at both ends of the zipper tape. Common examples of two-way zippers applications are on luggage and bags, as well as on some tents. Learn more.

Separating Zippers
In separating zippers, the teeth are separated completely when the zipper is unzipped all the way. We commonly see this type of zipper on jackets and coats. Heavy-duty versions of separating zippers are also commonly used in astronaut suits, firefighter suits, and other similar applications.

Extra Long Zippers
Extra long zippers are usually defined for those with long length and are commonly found on sleeping bag and tents.

Water-resistant zippers
Water-resistant zippers, as the name suggests, are commonly manufactured with a special material, technology, or finish to prevent water leakage. Common applications are found on raincoats and waterproof bags.

Marine Zippers
Similar to water-resistant zippers, with additional protection from salt water corrosion. A common example of this application is a boat seat cover.

Self-mending/Self-Repairing Zippers
Self-repairing zippers can re-align their own teeth when they got stuck or misaligned, simply by opening and closing the zipper. As long as the teeth are not completely broken, they will be re-aligned.

As heavy duty zippers are generally intended for applications with safety approach, purchasing the right zipper with a proper quality will be highly essential.

Make sure to purchase your heavy duty zippers from a reputable manufacturer, although your initial cost might be higher, you can save more money in the long run by avoiding replacement costs. If you need further assistance in purchasing heavy duty zippers, don’t hesitate to give us a call, and our team of experts will be more than happy to assist you.

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