Vacuum is a modified form of atmosphere packaging that many companies have incorporated so far since inception. A vacuum maker machine removes atmospheric oxygen from the package that is getting sealed. After removal of oxygen from the vacuum bag, the product is then sealed off and ready to be distributed. Oxygen is usually the primary contaminant of the most products. Removal of the oxygen will increase the product’s shelf life among other benefits. This form of packaging can protect both non-consumer and consumable products. This sealing process is usually straightforward though it incorporates various steps.
History of Vacuum Sealing
The use of modified atmosphere packaging (MAP) dates back to an early 19th century, but most of its accounts got publicity after World War II. Before the World War II, this process of packing was utilized, the air in the latex bags was first removed before the sealing. After the end of WW II, the use of plastics became more popular and got commercialized. This period then opened the age of vacuum sealing.
Vacuum Packaging Requirements
In vacuum packing operations, the primary requirements are the vacuum sealer or the vacuum packaging machine and the bags for sealing. Also, equipment such as external air compressor is needed and more so the inert gas to be used.
Types of Vacuum Bags
The vacuum bags are used for packaging the products before the product is released to the customers. These bags vary in thickness, shape and the level of oxygen permeability. When choosing a vacuum bag, you should go for the one that is thick enough to keep the product safe. The most common thickness is 3 mm but the long products different thickness is used. Here are the common types of vacuum bags:
Channeled vacuum bags
These types of bags have its sides embossed and are commonly used vacuum sealers at home. The embossed channel will allow air to escape from the bag with ease.
Zippered Vacuum Bags
This type of bags are consumer friendly and has a re-closable zipper that allows any person to open without the need for scissors easily.
Notched Vacuum Bags
This is another type of bag that any user can use at their homes as it has an easy opening platform.
Foil Vacuum Bags
This is a common type of vacuum bag that is mostly used in coffee storage. The foil will keep the UV light away that might compromise the packaged product.
Types of Vacuum Sealers
For the smooth process of vacuum sealing, the right vacuum sealer should be incorporated. There are various vacuum sealers available in the market, and you should choose the one that is capable of sealing your products well within the shortest time. Below are the different types of vacuum sealers:
Nozzle vacuum sealing
In this type of sealing, air is removed through the nozzle before the product is sealed.
Chamber vacuum packing
This form of packing involves the use of heat seal closure to remove the atmospheric air containing oxygen from the vacuum bag.
Vacuum skin packaging
Vacuum skin packaging involves removal of air using two roles of the film before it is sealed.
Hot-fill vacuum packaging
In this form of packaging, a plastic bag is dipped into hot water to remove excess oxygen before it is sealed off.