Patent ID: 7780353

Claim:
A bag for retaining the warmth and crispiness of food items contained therein, comprising: a) cellulose-based, oven-durable outer and inner plies which are at least partially adhesively affixed together by means of two or more of an upper transversal adhesive layer, a lower transversal adhesive layer, and at least one longitudinal adhesive layer; b) a bag interior defined by adjacent faces of said inner ply; and c) at least one pocket formed between said outer and inner plies, each of said pockets being defined by at least one of the upper transversal adhesive layer and the lower transversal adhesive layer, and by two adjacent longitudinal adhesive layers; wherein said outer and inner plies are pierced with a plurality of apertures such that the apertures pierced within said outer ply are not aligned with the apertures pierced within said inner ply and that the apertures pierced within said outer ply are offset from the apertures pierced within said inner ply by a predetermined dimension.