A lid member for a food container comprising an easily-peelable area of the
layered structure having a
lubricant between the base layer and the surface sheet, a non-peelable opening area of the
layered structure disposed within the easily-peelable area; a non-peelable area of the
layered structure disposed adjacent to easily-peelable area, said lid member further comprising a first tab to peel off the lid member from the container body, a second tab formed on the easily-peelable area along the
boundary line between the non-peelable area and the easily-peelable area to open the apertures of the opening area, a first slit,
cut from the base layer to the
adhesive layer forming apertures in the opening area, a second slit,
cut from the surface sheet to the
adhesive layer, along the
boundary line between the easily-peelable area and non-peelable area, and a third slit,
cut from the base layer to the
adhesive layer and disposed where the second tab is mounted, from a foot-end of the second tab, spaced from the second slit, to a cross position with the second slit.