| Customization: | Available |
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| Material: | POF |
| Type: | Shrink Film |
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Shrink sleeves are now growing in popularity for cans, bottles, and other containers, but there are still many people in need of quality product packaging who don't know how these labels work. Here's a quick breakdown of what a shrink sleeve label is and what makes it different from other labeling solutions.
What is a Shrink Sleeve?
Shrink sleeve labels are full-color, 360-degree printed labels that utilize heat in the application process to conform the label to the shape of the container. The labels are typically printed on either plastic or polyester film material and are commonly used on aluminum cans and glass or plastic bottles.
Benefits of Shrink Sleeves
One of the greatest advantages of using shrink sleeves is that it allows you a 150 percent increase in label real estate compared to pressure sensitive labels. This additional space can be used to help tell your brand story, add more imagery, or make room for all of the regulatory information that needs to go on your label.
Beyond branding, shrink sleeves can function as more than just a label. Like in the Tylenol example, shrink sleeves can double as tamper-evident sealing to give your products the extra security they need with a perforated shrink cap. Shrink sleeves can also be used to package multiple items together for the purpose of offering it as one product. Because shrink sleeves are form-fitting, you can package different sized and shaped containers, like free samples or two-for-one deals, together easily.
Another benefit of using shrink sleeves is that they are very made of very durable materials. This makes them an excellent labeling option for products like hair care products and beer that are often in humid or moisture-heavy environments like showers and refrigerators.
How Do Shrink Sleeves Work?
Like regular labels, shrink sleeves give you a means to add branding and product information on a container. The process of applying a shrink sleeve involves shrinking a film sleeve with steam or heat so that it conforms to the shape of your container instead of laying on the surface with an adhesive. However, before you can apply the shrink sleeve there are a few different steps that have to happen.
As the name suggests, one of the key differences between shrink sleeves and pressure sensitive labels (i.e. sticker-like labels) is that they come in "sleeves." Like pressure-sensitive labels, shrink sleeves can be printed on flexographic or digital printing presses. Unlike traditional labels, the ink is printed on the inside of the sleeve instead of on top of the label material. This allows the film to naturally protect the ink as it adheres to the container.
Once the sheets are printed, they need to be converted into sleeves. Some print shops, like Blue Label, do this step in-house to limit the number of times people handle these delicate products before they are applied. Other printers may need to send the sheets to shrink sleeve converters, which results in more opportunities for someone to mishandle the shrink sleeves, obstruct the ink, or cause some form of damage to these labels.
Regardless of who completes the process, the converter will seam the ends of the sheets together to leave openings at the top and bottom of the newly created sleeve. This is done by taking the ends of the film and sealing them together with a specific type of glue to create a loose cylinder. These seams are then inspected to ensure that the sleeves won't break open as they're applied. Once done, the film is inspected and shipped as either rolls or individual sheets depending on your application needs.
One of the big draws of shrink sleeves is that it conforms to the shape of your container: every angle, curve, or unique shape. However, this also means that your label design needs to be properly prepared to conform to this shape as well.
Due to the shrinking process, your label design will warp as the sleeve is heated and conforms to your container. Similar to how you need to adjust your design for tapered pressure-sensitive labels, you'll need to pre-distort your design based on the shape of your container. As such, you'll want to work with a label designer and label printer who can pre-distort designs for custom container shapes before your sleeves are printed.
Once your sleeves are ready, it's time to apply them to your containers. In addition to printers - and sometimes converters - you may also require an applicator if you don't have the right equipment in house. Either way, the sleeves are slipped over your containers and sent through a heat or steam tunnel, where the intense heat will shrink the film around the container.
It's important to note that since the film is made to react when exposed to heat, it's vital that they don't get too hot or cold before they're applied to your containers. Excess temperature in either direction can cause pre-shrinkage or affect the ink on the labels, which can impact the quality of the label and even render them unusable. As such, proper storage and shipping is a must, especially since you may require multiple locations to create and apply shrink sleeves.
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