Abstract: A method of wrapping a tray of produce or other articles requiring ventilation is provided. A ventilated package produced in accordance with the method is also provided. In accordance with the method, a sheet of flexible plastic film is applied to an open ended tray. The sheet includes a perforated portion which is bounded by non-perforated lateral edge portions. The sheet is positioned with respect to the tray such that the perforated portion is located over the open end of the tray while the non-perforated lateral edge portions extend over opposing portions of the rim of the tray and down the side walls thereof. The sheet is stretched in such a manner that the non-perforated lateral edge portions are subject to more severe stretching than the perforated portion of the sheet. The sheet accordingly will not tend to tear despite the presence of perforations.

Abstract: A receptacle for food products and the like is provided. A plastic film is tightly wrapped about a preformed package such as a tray containing wet food products. The film defines a pair of opposing flaps and an area of overlapping film portions extending between the flaps and adjacent to the bottom surface of the tray. Heat and pressure are applied to the wrapping at the bottom surface of the tray to provide a flat, sealed film surface. A strip of adhesive tape is applied to the flat film surface, thereby connecting the opposing flaps and providing a seal over the seam defined by the overlapping film portions. The tape is then heated to cause the adhesive to flow, thereby improving the seal. The wrapping is prevented from moving from its original position by the tape and is accordingly substantially leak-proof.