Shrink tunnels are used for packaging with heat different shrink wrapped items. They do vary in sizes, and the ways that they do this. they usually create heat, and they do this to everything that runs there. The most common are circulating, infrared, and also the steam tunnels, each with the pros and cons.
The Types
The steam shrink tunnels utilize shrink sleeves and some bottles that are cylindrical. They utilize steam in order to heat the bottles, but they do require a little bit more setup.
The infrared ones usually use infrared to shrink the items, and they’re great for different products and films, and they usually are decent in terms of costs.
Then there are recirculating tunnels, which are great due to the durability and price that they have, and they’re great for shrinking films and other items that are there. They are great for a variety of products and options, and usually, the tunnel type determines the way that they’ll be packaged too. There are also other factors that determine this too, so keep that in mind.
The Factors that Impact the Speed
There are a few factors that do impact the speed.
The first is power. The power that’s supplied to this is huge, and usually, a tunnel that’s running around 220 v is usually able to add more heat than something running around 110v. This also is great for determining the motor size too, as the amperage plays a factor.
The size of the tunnel and the product also plays a part. A product that’s in there for longer shrinks the total amount that’s wrapped. The length of the product also needs to be considered when buying shrink tunnels.
The film also is another thing to consider as well. Thicker films do need more heat, and they need slower speeds through the conveyor belt. This influences the temperature of the tunnel, and other settings too.
You should also look at the testing that’s there too. With a lot of different factors influencing the products that are shrank through these tunnels, as we find ways to test these products, there are different methods that are really good with shrink tunnels, and you can test these to see how many are able to go through. The methods of testing do determine the speed that’s in the shrink tunnel, for products that are certain sizes and dimensions.
PVC film that’s shrinking usually tends to shrink at a temperature that’s much lower than the other types. That’s why a lot of shrink film testing for PVC starts at lower temperatures than the polyolefin types of films.
The conveyor speeds also are related to the products that get packaged every single minute. One singular package is around 10 or so inches in terms of length. With the spacing of the products, it also means that the products per minute that go in there are approximately the feet per minute, and you can look at the film type that’s used within the tunnel as well.
Determining the tunnel that you need is important, because it determines how fast the products will go through the tunnel, and there are some amazing benefits that come out of this too, especially if you decide to utilize them.
If you’ve been waiting for the right type of tunnel, or have no idea what the right tunnel might be for something like this, then contact a specialist, and have them help you not only determine the right tunnel, but also the stretch film for your needs too.
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