substantially larger air gaps in between than otherwise possible with the presence of interlocking woven warp 2 a these air gaps within said venting band 9 thus form the desired venting structure for the bag of the present invention the method by which these venting bands 9 on the cylindrical body panel 10 are manufactured is described below the method of manufacturing the bag starts with the tubular weaving of yams of warp and weft materials with a well known circular loom whereby an elongated tubular structure is formed with woven warp and weft strands fig1 is a perspective view of a portion of the weaving mechanism inside a circular loom wherein a full circle of radially converging warp strands 2 are interlockingly woven with another set of circumferentially directed weft strands 3 for easiness of viewing neither the full set of warp and weft strands nor the circular weaving heads are shown after passing through the underside of a concentration ring 1 the just woven cylindrical web turns vertical in direction forming a cylindrical body panel 10 and continues to be pulled upwards toward an ultimate take up roller which is not shown here the direction of the woven warp 2 a is parallel to the tubular axis whereas the direction of the woven weft 3 a is perpendicular to the tubular axis around the periphery of the concentration ring.