Formed polymer film package for microwave cooking

For use in a microwave oven, a folded package holding cookable food products to be heated for consumption, said package being substantially formed of a polymer film, said polymer film having a pair of side edges and being folded to form a tube having overlapping side edges, and said package being of the tubular formed type having a series of walls and having a formed bottom panel, said walls comprising a front panel, a back panel, and inwardly folded gusseted side panels, said panels being disposed such that the package can be substantially flattened with the gussets closed and the front and back panels substantially arranged in contiguity with each other along a center section and between said gussets, said package having an upper edge, said package also having said bottom panel providing lower closure for the package, and with said food products to be cooked resting within the package and substantially upon the said bottom panel, said panels formed from said polymer film, at least one of said wall panels in combination with the bottom panel having a manufacturer's joint formed therein, the manufacturer's joint extending the height of the tubular formed package before the formation of its formed bottom panel, said manufacturer's joint disposed approximate said overlapping side edges of the polymer film forming the folded package, a narrow paper strip disposed within the manufacturer's joint and intermediate the said overlapping side edges of the polymer film forming the package, said paper strip being adhesively secured by means of a heat resistant adhesive within the said joint to said overlapping side edges of the polymer film, said heat resistant adhesive being a polyvinyl acetate, and said formed joint being heat resistant to the microwave energy generated during usage of the said package while microwave heating of said food products, said package being substantially fully transparent.