Abstract: A flexible, sealable container apparatus having a substantially pinch-bottomed configuration prior to expansion of the bag during cooking. The container apparatus includes substantially quadrilateral regions of adhesive. The shape and positioning of the quadrilateral regions, with diagonals substantially collinear to panel edges of the container apparatus, serves to articulate the container apparatus into a substantially rectangular-bottomed configuration during cooking, while improving the integrity of the bottom region seals against blowout and/or leakage.

Abstract: A vented container apparatus for storing various vapor and gas exuding articles formed from two or more plies of sheet material operably adhered together. A venting corridor is formed between at least two of the plies by a void flanked by the sheet adhering medium. A first hole connects the venting corridor to the interior of the container proximate to one end of the container and a second hole distally spaced from the first hole connects the venting corridor to the exterior of the container, proximate to the other end of container.

Abstract: A sealable square bottom container apparatus comprising one or more plies of sheet material. The square bottom of the container apparatus includes a continuous ring of sealable adhesive to form a substantially sift-proof bottom panel after articulation and sealing of the bottom of the container apparatus. Such a continuous ring forms a positive seal towards preventing the inadvertent migration or seepage of articles from within said container apparatus, particularly articles such as oils, steam, fluids and fine powder materials--without the need for an additional patch, sealing pastes or preliminary welds applied to the bottom of the container apparatus.

Abstract: A cooking apparatus and process for cooking food therewithin, wherein the apparatus facilitates cooking of various types of food in cooking containers, in which at least minimal agitation of the food to be cooked is desired, and wherein the food, as well as the apparatus may be expandable during the cooking process. A food containment region is provided for acceptance of the food to be cooked prior to operably sealing the cooking container. Container positioning portions are operably associated with at least a section of the cooking container so as to temporarily maintain the cooking container in a vertically supported orientation after insertion of the apparatus within an oven.