Whether for commercial or household items, keeping both sealed and clean is a necessity when shipping or storing items. Sealing certain foods also keeps them fresher longer. One method of doing this is with one of a variety of shrink wrap machines. These machines use both heat and some type of plastic wrap or sheeting to remove excess air and then seal the plastic around the item. The type of plastic used will vary with the type of item being sealed. Anything that will stand up to the heat used can be sealed using these machines.
The machines vary in size and complexity depending on what is being sealed, and how much production you need to do. Specialty shrink wrap machines are available for those who package things such as pharmaceuticals or vitamins. As these should not be exposed to extreme high temperatures, these shrink wrap machines use lighter plastic and lower temperatures to seal the bottles.
Shrink wrap systems with tunnels are the fastest and most effective way to package a wide variety of products. The L-bar sealer cuts the film and the heat tunnel quickly shrinks it. These systems can be used with either PVC or Polyolefin film and are designed to package CDs, DVDs, cushions for outdoor chairs, and other goods.
A straight bar system, also called I-bar shrink wrap long island machines, are designed for low to mid-volume use. The straight bar machine is used to cut film around a product after which a heat gun shrinks the film. These are very cost effective and are very easy to use. An example of a product this could be used on would be frozen pizzas.
Shrink wrap L sealers are capable of quickly cutting film without the smoke and odor of a standard straight bar sealer. The two-sided cut provides a better seal and speeds up packaging. These can be used in conjunction with a heat tunnel or a heat gun.