Among the lists of several plastic films, shrink wrap is another type of plastic film. Shrink wrap holds things together and protects them from dust and weather. These films can be wrapped in anything, whether it’s one thing or a bunch of things. The heat is transmitted into the film to create a tight-fitting, self-sealed package. We can use shrink wrap to bundle small items together and to protect big stuff like dry-docked boats.
The PSI, it is indicated how much force the shrink film will exert on your goods. Understanding the force of the shrink is essential when packaging a multi-pack that must be firmly contained without being damaged, especially when modifying your shrink gear. This won’t matter if the shrink force is large and the packaging wood. Previously, polyolefin films had a high shrink force. Shrink workforce is minimized by using new polyolefin compositions.
Over the market, Bi-axially or preferentially oriented shrink films are available. Bi-axially oriented Ecofriendly packaging films shrink in both directions (machine direction and cross direction) at the same rate. A preferentially orientated film is used less and reduces product distortion.
One can change the shrink percentages by using preferentially oriented film. And the same can be kept by using bi-axially oriented films, like 40/40, 30/30, or 20/20.
A free shrink is the amount of shrinkability in a film before coming into contact with your product. For the achievement of better packaging in terms of looks, one can change the shapes and sizes with high degrees of free shrink.
Resistance to puncture/Tear
The test of resistance to puncture can determine how difficult it is to break the film and how difficult it is to shred it once it is punctured. eco-friendly films with strong puncture resistance often have lesser tear resistance and vice versa. Choose an appropriate shrink film that balances product security and easy access to authentic goods. Keep your shrink wrap in a perfect storage space which should not be too cold until you’re ready to use it to avoid the film becoming brittle.
MVTR (Moisture Vapor Transmission Rate)
Moisture Vapor Transmission Rate determines how much moisture will or will not pass through the film. If low moisture is transferred into or out of your package, it affects the life of the shelf; thus, you must pay attention to this. In order to reduce the chances of the occurrence of fog, you should think about modifying atmospheric packaging.
Anti Fog films are used on food packaging (both fresh and frozen) so that the food can be prevented from fog forming on the film’s surface.
Moisture can generate fog which makes it difficult to see the product through the film.
Odour barrier films help in keeping keep away from undesirable odours from entering or exiting your shipment.