Exploring Traditional Fasteners | Zips
We all use them in our daily lives, but just how much do we really understand about zips or do we just take them for granted?
The components of zips
This is a small bar that sits at the top and it stops the slider from coming off the top of the zipper tracks.
As the name may well suggest, this is a bar at the bottom that acts the same as a top stop but is at the bottom of the zipper tracks.
|This acts to separate and join the zipper tracks.
|The part that you’re probably most familiar with and used to pull the zip up and down.
|The fabric that is sewn onto an article. The teeth are attached to this.
Components of Separating Zips only
Only used with separating zips, this stops the slider from coming off the bottom.
Again, this only applies to separating zips and is used to hold the opposite side of the zip in the retainer box.
The different zip types
Now you know all about the anatomy of a zip, it’s time to take a look at the different types of zips that exist. The most common of these are:
- Closed-end zips
- Open-end zips
- Two-way zips
- Continuous chain
Let’s take a look at these in turn:
For anyone who may be unfamiliar with working with, and sewing, zips, closed-end zips are the place to start. Why? Well, they’re incredibly easy to get to grips with. You’ll find that this type of zip has a bottom stop. As we have seen, this is a metal bar that goes across the bottom of the zipper and acts to hold it together in one piece.
Open-end zips are also sometimes referred to as separating zips. As the name suggests, this kind of zip separates at the bottom. These are the best choice when it comes to fastenings that require opening and closing. You’ll find that open-end zips are commonly used in jackets and coats.
Two-way zips do just what their name suggest: they work two ways. This means that they can be closed, or opened from either end. These are great for flexibility and also security as the zips can be padlocked together. You’re most likely to come across two-way zips on the likes of backpacks and suitcases.
These are zips that have no beginning or end. Continuous chain can be cut to the length that’s required. The fact that there’s no pull tab or bottom stop means that you get to purchase the zipper tape by the metre. If using continuous chain, zip pulls are something that will need to be bought separately. The advantages of continuous chain are that users have great control over the appearance and they are perfect for when long zips are needed.
The materials used for zips
Whether you’re looking at continuous chain, open-end zips or any of the other types, you will find that these are made in a variety of ways, using a variety of materials. The most common of these include:
- Nylon coil zips
- Plastic moulded
- Metal zips
- Invisible zips
Next, we’ll take a look at each of these in turn:
Nylon Coil Zips
These types of zips have the teeth made from nylon rather than the likes of plastic or metal. It’s made from nylon monofilament which is then coiled before being woven or stitched into the zipper tape. These nylon teeth are perhaps the most flexible type and they’re extremely popular when it comes to luggage, tents and jackets. The popularity stems from the fact that they are extremely strong as well as being easily repairable.
Plastic Moulded Zips
Moulded plastic zips are commonly made from acetal polymer plastic. They feature symmetrical teeth that interlock. When compared to other zip types, they tend to have more defined and substantial teeth. This leads to them being referred to as ‘chunky’. You’ll usually find these zips being used on handbags and clothes, such as jackets. The downside with these zips is that they can be difficult to fix should they be broken.
With teeth made out of metal, this zip type is probably the most sturdy, as well as being the most durable. Potential downsides here can be the weight of them and the fact that they’re harder to shorten and work with generally. One of the reasons that they tend to be used on the likes of jeans is because they are highly resistant and are capable of withstanding numerous washes without becoming damaged.
Also known as concealed zips, these are designed to be practically invisible. You’ll find that these types of zips have extremely fine teeth and, to go a fine finish, there usually sewn into the seam in garments. If they’re fitted correctly, you should only be able to see the pull tab. These zips are largely used in dressmaking in instances when the designer does not want the zip to be visible from the outside of the garment.
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