Patent ID: 7992601
Filing Date: 2011-08-09
Classification: B31D,B65B,B65D,F16K,Y10T

Abstract:
1. An air lock valve provided with cut holes, disposed between two outer films, the outer films being adhered to each other by means of hot sealing to form an air chamber, the air lock valve comprising: two inner films, folded together vertically, a part of ends thereof being adhered to each other; at least one air inlet, formed by severed portions of the partly adhered ends of the inner films; at least one air passageway, connected to the air inlet and formed between the inner films; and at least one cut hole, disposed on any one of the two inner films, each cut hole being disposed at one side of the air passageway; and at least one branch air passageway connecting the air passageway at one end thereof and the cut hole at the other end thereof, wherein the air lock valve is adapted to allow outside air to flow into the air passageway via the air inlet and flow to the branch passageway along the air passageway, so that the outside air is filled into the air chamber via the cut hole and the air chamber is filled with air and inflated, and the air lock valve is adapted to allow air in the air chamber to thrust the inner films to cause the air passageway to be blocked and the air in the air chamber to be locked.