Container for an instant food

Claim 1

A double-walled container for instant food comprising: an outer receptacle of synthetic resin including a smooth peripheral side wall and having an open top and a closed bottom with two cylindrical portions near the open top of the outer receptacle; said cylindrical portions merging with each other through a tapered portion and the lower of the cylindrical portions merging with the remaining part of the receptacle by a second tapered portion; said lower cylindrical portion having a plurality of inward projections formed circumferentially at intervals on the peripheral side wall of the outer receptacle, adjacent but spaced from said open top of the outer receptacle; an inner receptacle of synthetic resin containing therein instant food, the inner receptacle including a lower corrugated peripheral side wall and having a closed bottom and a brim substantially flush with the open top of the outer receptacle, the apex of each corrugation being in contact with the peripheral side wall of the outer receptacle below said second tapered portion and forming an air space between the outer and inner receptacles; two parallel annular ribs formed on the inner receptacle above the corrugated peripheral side wall, adjacent but spaced from said brim of the inner receptacle and defining therebetween an annular groove receiving said inward projections of the outer receptacle, thereby holding the inner receptacle within the outer receptacle; said ribs engaging said tapered portions; a flange formed on and around said brim of the inner receptacle and extending outwards beyond the open top of the outer receptacle in a plane including the brim of the inner receptacle, the free end of the flange being curled downward and spaced from the outer surface of the outer receptacle; and a covering of a pliable material bonded to said flange, thereby sealing said instant food within said inner receptacle.