ULTRASOURCE Ultravac 500, Руководство пользователя

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UltraSource LLC • 1414 West 29th Street • Kansas City, MO 64108-3604 • 800.777.5624 • 816.753.2150
3.6
OPERA
TION
OPERA
TION
Sealing with Air-Assist
All machines are equipped with regulators for air-assisted sealing. Set the air pressure
regulator to 20 p.s.i. increasing to a maximum of 40 p.s.i. While a good seal can be
obtained without air-assist, use of air-assist is recommended when gas back-flushing above
average pressure, using shrink pouches, packaging a product that easily contaminates the
seal area of the pouch, trying to overlap pouches, wrinkles cannot be avoided in the seal
area, or when using the Double Seam Seal Option.
Gas Flush Option
Gas flushing is the introduction of an inert gas into the chamber after the vacuum stage
is finished. Gas can be used as a filler to prevent crushing of the product after sealing, as
a means to prolong shelf life, or as a means to maintain desirable product appearance.
Commonly used gasses include nitrogen, carbon dioxide, or a mixture of both. Consult your
local gas supplier to select the proper gas for your product.
WARNING
Explosion hazard.
Do not use a gas with an oxygen content greater than 22% with gas flush option.
Double Seam Seal Option
All machines are equipped with standard seal bars having a single seal element per seal
bar. The double seam seal bars have two seal elements per seal bar. We recommend using
air-assisted sealing with this option to achieve best results.