Patent ID: 7681734
Filing Date: 2010-03-23
Classification: B65D

Abstract:
1. An air evacuative binding type air packing bag, comprising: two outer films, stacked together vertically; two inner films, positioned between the two outer films, a heat resistant material being spread between the two inner films; at least one air cylinder, formed between the two outer films by adhering the two outer films to each other by means of hot sealing and used for storing air; an air filling passageway, positioned at one side of the air cylinder; at least one hot sealing point, positioned in the air filling passageway and between one sheet of the outer film and one sheet of the inner film, and sticking one sheet of the outer film to one sheet of the inner film; at least one air inlet, formed by adhering the two inner films to each other by means of hot sealing and used for communicating the air cylinder with the air filling passageway, air entering the air filling passageway pulling apart the two sheets of the outer film outward, and driving two sheets of the unstuck inner film to pull apart outward through the hot sealing points to open the air inlet, allowing the air to be filled in the air cylinder via the air inlet; a first cushioning wall, formed by bending one side of the air cylinder; a second cushioning wall, formed by bending another side of the air cylinder; and an accepting space, positioned between the first cushioning wall and the second cushioning wall and used for accepting an article, air in the accepting space being evacuated to allow the first cushioning wall and the second cushioning wall to bind the article up.