Form, fill and seal apparatus and methods for applying one-way valves to flexible packages
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United States of America Patent
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Feb 20, 2018
Issued Date -
N/A
app pub date -
Mar 19, 2015
filing date -
Mar 24, 2014
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Abstract
Disclosed are apparatus and methods for producing bags filled with a flowable particulate material from a continuous tube of flexible material. The apparatus includes a one-way valve application station having a valve applicator mechanism and a cutting and heating mechanism configured for movement with the bag through the apparatus. The valve applicator mechanism holds a one-way valve for insertion within the bag as the bag is moved through the apparatus. The cutting and heating mechanism is configured to be moved in unison with the valve applicator mechanism to cooperate with it to cut a vent hole in the bag at the valve and to weld the valve to the bag. Then the valve applicator mechanism and the cutting and heating mechanism are moved to apply another one-way valve to another filled bag and the bag with the valve secured thereto is sealed. The resulting sealed bag is suitable for stable palletization.
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