Abstract: A paper feed system suitable for use with a patty making machine to provide paper for separating patties, including a stack of sheet-form paper having a deformable element on the side edge thereof, a paper hopper, and a guide on the inside surface of a sidewall of the paper hopper for engaging the deformable element. Two guides are provided, each on opposite sidewalls of the hopper, engaging deformable elements on opposite sides of the paper stack. Preferably, the guides are male guides extending from the sidewalls with the end adjacent to where the paper is dispensed thicker than the remainder of the guide to support the paper. The deformable elements cooperate with the guides so that the paper is deformed by an extreme bend, but not torn, when each sheet is dispensed from the hopper. A stack of individual sheets of paper usable with this system includes recesses on opposite sides of each sheet of paper, where the recesses receive the guides when stacked in the hopper.

Abstract: A stack of paper is provided for separating portions produced by a portion control machine. The paper is dispensed from a paper feed system that feeds the bottom-most sheet from the stack along support rails that support opposite edges of the sheet. An integral stiffening strip extends between the opposite side edges of each sheet for stiffening the sheet therebetween and to minimize bowing of the sheet when supported at its opposite side edges. The stiffening strip has an arcuate cross-section, and the stiffening strip includes a rigidifying wax coating that is impregnated in the sheet at least to a greater extent in other areas of the sheet than at the strip. The invention also contemplates a method of fabricating the sheets of paper.