Patent ID: 8777486

Claim:
A packaging bag having a steam venting function, comprising: first and second sheets facing each other and having edges which are sealed, the first sheet having a foldable portion including a first outer panel facing a second inner panel, the first and second panels being separated by a fold, and the foldable portion having a sealed region and an un-sealed region; a steam venting port formed in the un-sealed region through the inner panel; a steam venting port formed in the un-sealed region through the outer panel; a peelable tape in the foldable portion, said peelable tape including a steam venting port formed therethrough corresponding in position to the steam venting port of the outer panel, wherein the peelable tape includes a peelable side which is sealed to the inner panel at the sealed region, and a non-peelable side which is sealed to the outer panel at the sealed region, wherein the peelable tape extends over the steam venting ports in the un-sealed region, and wherein, when steam of a predetermined pressure is in the bag, the peelable side peels from the inner panel to allow steam to escape the bag through the steam venting port in the inner panel and through the steam venting port in the peelable tape and the corresponding steam venting port in the outer panel, but the non-peelable side does not peel from the outer sheet, wherein the foldable portion has a width extending from the one sealed edge to another sealed edge, and the peelable tape extends substantially along the width, and wherein sides of the peelable tape includes holes through which the inner and outer panels contact each other and are sealed together at the sealed edges defining the width of the foldable portion, so as to further position the peelable tape relative to the foldable portion.