Vacuum storage bag with exhaust valve and pressure-sealing zipper

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.

1 . A vacuum pressure-sealing storage bag comprising;
 a plastic bag film;   an exhaust valve; and   a pressure-sealing zipper;   wherein the exhaust valve comprises a valve plate, a valve seat and a valve cover, the valve plate is configured between the valve seat and the plastic bag film being bonded to the valve seat,   wherein an air duct is configured between the valve seat and an inner surface of the valve cover.   
     
     
         2 . The vacuum pressure-sealing storage bag according to  claim 1 , wherein the valve plate is made of soft polymer, and is provided between the plastic bag film and the valve seat, and a raised cone head is provided in a center of the valve plate, and tightly mates with a conical boring of the valve seat. 
     
     
         3 . The vacuum pressure-sealing storage bag according to  claim 1 , wherein one surface of the valve seat is bonded to the inner surface of the plastic bag film, and a plurality of grooves and convex ribs are spread over the other surface of the valve seat, and are wrapped tightly by the valve cover, whereby a narrow and winding air duct is formed by the plurality of grooves and convex ribs together with the inner surface of the valve cover. 
     
     
         4 . The vacuum pressure-sealing storage bag according to  claim 1 , wherein the pressure-sealing zipper is configured at an opening of the vacuum pressure-sealing storage bag.