VACUUM STORAGE BAG WITH EXHAUST VALVE AND PRESSURE-SEALING ZIPPER
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United States of America Patent
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N/A
Issued Date -
Dec 4, 2014
app pub date -
Jul 3, 2012
filing date -
Dec 2, 2011
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A vacuum storage bag comprising a plastic bag film, an exhaust valve and a pressure-sealing zipper is provided. The exhaust valve includes a valve plate, a valve seat and a valve cover, the exhaust valve configured between an upper film and a lower film of the plastic bag. One side of the valve seat is bonded to an inner surface of one of the films. Numerous grooves are spread over the other surface of the valve seat, and are wrapped tightly by the valve cover. A cone head is raised in the center of the valve plate between valve seat and the film, and tightly mates with a conical boring of the valve seat. A narrow air duct is formed by the grooves of valve seat and cover, and could filter air in the bag to prevent dust from entering sealing surface between the valve plate and the valve seat.
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