AIR EVACUATION SYSTEM
for the SAXON range of Continuous Heat Sealers

• Developed to extract surplus air from plastic bags during the heat sealing operation using a Saxon continuous hot air heat sealer

• Helps eliminate the balloon effect which can result in unstable palletization

• Can be fitted to a wide range of SAXON sealers

• Reduces the volume of stacked goods

• Variable insertion probe

• Amount of air withdrawn can be easily controlled from air reduction to partial vacuum

• Evacuation pump has no moving parts

• Programmable control

• Suitable for a wide range of bags, products and applications

• Designed to work with plastic bags containing micro perforations allowing air to escape

• In certain applications, evacuation to partial vacuum can also be achieved adding to the range of possible uses

• Low maintenance

• Consistency of operation

• Can be programmed to operate continuously (while the bag is moving) or on a START/STOP basis (while the bag is stationary)

HOW THE 'AIREVAC' WORKS

Once the filled bag has been trimmed ( and cleaned if the AIRWASH BAG TOP CLEANER is fitted) The Saxon 'Airevac' system opens the top of the bag momentarily with vacuum cups and inserts the suction probe. The top of the bag then creates a seal around the probe and air is withdrawn under vacuum. The probe then withdraws and the bag proceeds along the conveyor for immediate heat sealing.

OPERATING PARAMETERS

PRODUCT TYPES	CONTINUOUS OPERATION	START/STOP OPERATION
Non-powders i.e. solids and larger granules	General small bags up to 5Kg and approx up to 200mm wide, surplus air removal only. Amount of air removed depends on speed and width of bag.	All bags up to 25Kg. Air removal up to and including partial vacuum condition.
Powders i.e. fine granules, powders greater than 7um	Requires special treatment - consult with our technical department	All bags up to 25Kg. Surplus air removal only.
Pastes, Liquids, and Fluids	Requires special treatment for both operations. Consult with our technical department.
BAGS	CONTINUOUS OPERATION	START/STOP OPERATION
Bag Width	Max - no limit Min - Greater than 200mm	Max - *350-500mm Min - 100mm
Bag Thickness	75-150 microns (3-6 mils)	50-200 microns (2-8 mils)
Bag Spacing	75mm (3")	*300-900mm (12"-36")
Speed of operation	10.6 m/min 35 ft/min	No limit - subject to certain conditions
Bag Material	Any smooth, non-dimpled, non-porous material
Bag Type	Flat pillow sacks or gussetted sack (subject to certain conditions)
	*Depending on SAXON model being used

UTILITY REQUIREMENTS

110/115V, Single Phase, 50/60 Hz 220/250V, Single Phase, 50/60 Hz

AIR REQUIREMENTS

Pressure: Minimum 6 bar (90) psi, clean dry air

Minimum delivery flow rate: 210 liters/min (7.4 cfm) using a minimum 8mm bore pipe or tube

Air Consumption: Typical average for air reduction on a 25Kg bag is about 10 liters (0.35 cu.ft.) per bag