Patent ID: 8701888
Filing Date: 2014-04-22
Classification: B65D,Y10T

Abstract:
1. An air-sealed body, comprising: two outer films, stacked together vertically; two inner films, positioned between the two outer films; a plurality of heat resisting materials, spread between the two inner films; a first transverse heat-sealing line, adhered the two inner films and the two outer films; a plurality of second transverse heat-sealing lines, positioned at two ends of each of the two outer films and adhered the two outer films; an air passage, positioned in the two outer films between the first transverse heat-sealing line and one of the second heat-sealing lines, the air passage comprising an air-filling port for filling air; a plurality of longitudinal heat-sealing lines, adhered the two outer films and the two inner films; a plurality of air columns, positioned between the two outer films among the first transverse heat-sealing line, the other one of the second transverse heat-sealing lines and the longitudinal heat-sealing lines; a plurality of air inlets, formed by heat sealing the two outer films and the two inner films together on the portions that the two inner films are spread with the heat resisting material and overlapping with the first transverse heat-sealing line, and adapted to communicate the air passage with the air columns; a plurality of heat-sealed blocks, comprising a first portion and a second portion, the first portion positioned in the air passage, adhering the two outer films and the two inner films, and the first portion having a first side and a second side, the heat-sealed blocks being reduced in width from the first side near the first transverse heat-sealing line to the second side for guiding the air flowing toward the air inlets, the second portion positioned on each of the longitudinal heat-sealing lines and protruded out of the longitudinal heat-sealing line, two sides of the heat resisting material adjacent adhered the heat-sealed blocks respectively to form the air inlet between two adjacent heat-sealed blocks, one end of the heat resisting materials aligned with the first side of the first portion, another end of the heat resisting materials aligned with the lower periphery of the second portion; and a plurality of heat sealing points, positioned in the air passage, disposed corresponding to a middle portion between the first side and the second side, and adhered one of the two inner films and one of the two outer films adjacent thereto: wherein the air enters the air-filling port and expands the air passage, and the two outer films are pulled apart upward and outward in a longitudinal direction and contracted upward in a transverse direction to drive the heat-sealed blocks to move and thrust the two inner films, and the portions of the two inner films spread with the heat resisting material are pulled apart upward and outward in a longitudinal direction to open the air inlets, meanwhile since the two outer films are deformed from a flat structure to a three dimensional structure with arced outline and pulled apart outward, the opening of the air inlet is ensured via driving the two inner films to be pulled apart outward by the heat sealing points, and after entering the air columns through the air inlet the air presses the two inner films to close the air columns.