Abstract: A support for a photographic printing paper comprising (a) a polyolefin synthetic resin layer containing a white inorganic filler, (b) an opaque layer of a synthetic paper or a synthetic resin film, (c) a synthetic resin layer having a greater stiffness than the polyolefin synthetic resin layer and (d) a synthetic paper or a synthetic resin film layer on which writing is possible, wherein the relative thickness of the polyolefin synthetic resin layer (a) is not more than about 20% of the total thickness of the support and the relative thickness of the synthetic resin layer (c) having greater stiffness than the polyolefin synthetic resin layer (a) is not less than about 15% of the total thickness of the support.

Abstract: A packaging article using a thermoplastic film or sheet as a raw material therefor. The packaging article is provided with a bag opening in a region thereof. In forming the article, a front bag panel and a back bag panel are thermally fused together along their peripheral edges except the region defining the bag opening, into a bag form. The bag opening is associated with a flap for closing the same which is formed by extending either the front bag panel or the back bag panel and which has a reinforcing body thermally fused thereto. The reinforcing body is in the form of a laminate consisting of paper or synthetic paper having a thermoplastic layer applied thereto by lamination or by extrusion coating, which thermoplastic layer is thermally fused to the flap simultaneously with thermal fusion of the front and back bag panels.