Specialty Products
Shrink Films
Printed Shrink Labels
Custom Printed Sleeves
Shrink Sleeves
Shrink Bands
Shrink Bags
Shrink Tubing
Multipacks
Preformed Shrink Bands

Equipment
Vacuum Machines
Shrink Wrap Systems
L-Bar Sealers
Heat Tunnels
Auto-Banding
Weighing/Filling
Skin Packaging
Pallet Wrapping
Laminating
Heat Guns
Blister Packaging
Bag Sealers

Calculate Sizes

Crystal-Vision
23870 Hawthorne Blvd.
Torrance, CA 90505
(800) 331-3240
(310) 373-6057
Fax (310) 373-6157
Email: cvpkgsys@aol.com

Vacuum Packaging Machines

These machines are used to “vacuum out” most of the oxygen from a bag containing food or electronics items. By removing most of the oxygen and immediately sealing the bag the shelf life of the food or electronics component is greatly extended. A longer shelf life allows foods to be stored in freezers or ambient temperatures without spoiling for a long period of time or the electronic component from corroding due to oxygen and moisture contamination.

Special “vacuum bags” must be used so that oxygen or moisture does not permeate through the wall of the bag and contaminate the product. Usually a co-extruded nylon plus polyethylene material is used in construction of these bags.

There are three major types of vacuum machines:

1. Chamber Vacuum Machine – the entire bag is put inside the chamber of the machine and a vacuum is pulled on the entire bag – then sealed.
2. Retractable Nozzle Vacuum Machine – The bag opening is placed over one or two nozzles that protrude into the bag and suck the air (oxygen) out of the bag only – then the nozzles retract out of the bag and the machine immediately seals the bag.
3. Channel Bag Vacuum Sealer – The bag opening is placed into the vacuum machine and air is sucked out of the bag through very small channels molded into one side of the bag. The machine then seals the bag closed after the desired vacuum is reached.

Crystal-Vision has both types of vacuum bags and all three types of vacuum sealing machines.