Vacuum Sealers Explained

Vacuum Sealers remove oxygen from a package prior to sealing the bag.  By removing oxygen from the package, vacuum sealing can extend the life of a food package or prevent rust of industrial items.  Some vacuum sealers also provide gas purge/gas flush which can flush your pouch with nitrogen to ensure the complete removal of any oxygen in your pouch.   Barrier type of bags must be used to ensure a proper vacuum...some sealers such as the external vacuum sealer require special channel or embossed bags in order to vacuum and seal.  There are three major categories of vacuum sealers:  external vacuum sealer, nozzle vacuum sealer, and the chamber vacuum sealer.  We carry vacuum sealers in all three categories.  Click here for our vacuum sealer product line.

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External Vacuum Sealers

External Vacuum Sealers In an external vacuum sealer, your product remains outside of the vacuum sealer and a vacuum pump extracts air from a small vacuum cavity. 

 

Bag Type:  Only embossed/channeled bags can be used

Process:  Air is extracted through the ridges on the pouch after the machine’s lid is closed over the bags’ end

Pros

  • Inexpensive

Cons

  • Embossed pouches more expensive than standard vacuum pouches
  • Not practical for higher volume user
  • Slower than commercial vacuum sealers
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Nozzle Vacuum Sealers

In an external vacuum sealer, your product remains outside of the vacuum sealer; a nozzle draws air out of the bag and retracts so the bag can be sealed.

Bag Type:  Standard

Process:  Air is extracted by means of a retractable nozzle which is placed in between the vacuum pouch.  Bag conforms around product as air is extracted

Pros:

  • Fast and light vacuum
  • Best for fresh vegetables and other “crushable items”
  • Gas flush option allowing perishable items to be sealed

Cons: 

  • External compressor may be required (our SINBO household vacuum sealer does not require an external compressor)
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Chamber Vacuum Sealers

Chamber Vacuum Sealers

In a chamber vacuum sealer, the product is placed completely in a machine before sealing. 

Bag Type:   Standard

Process:  Product is placed in the chamber and the lid is closed.  A vacuum pump extracts air from the chamber; when the air has been extracted, the sealer will then seal the bag.  Air allowed back into the chamber and the vacuum sealed product can be removed

Pros:

  • Highest possible vacuum pressure Identical vacuum extracted each time
  • Best for liquids and/or grains Gas flush option allowing perishable items to be sealed

Cons

  • Usually larger machine so occupies more space