Abstract: A packaging material film according to the present disclosure includes a first resin layer that contains a polyolefin resin and a porous filler. A ratio Y/X of an average particle size Y ?m of the porous filler to a thickness X ?m of the first resin layer is 0.02 to 3.5, and a content percentage of the porous filler in the first resin layer is 0.5 to 30 mass %. A packaging material according to the present disclosure includes a substrate and a packaging material film disposed on the substrate. In the packaging material, the packaging material film is formed of the above packaging material film, and a surface of the first resin layer of the packaging material film on a side opposite from the substrate is exposed.

Abstract: A method for manufacturing a packaging body according to the present disclosure includes the steps of: (A) preparing a packaging material that includes an innermost layer containing a resin composition containing a polypropylene resin and a filler dispersed in the resin composition, a ratio Y/X of an average particle diameter Y ?m of the filler to a thickness X ?m of the innermost layer being 0.02 to 3.5; (B) producing a packaging body that has the packaging material and an oil-in-water dispersion-type content hermetically housed by the packaging material; and (C) subjecting the packaging body to a heating treatment so as to absorb oil contained in the content into the innermost layer.

Abstract: A liquid-repellent layer forming resin composition comprises a polypropylene resin (A) and a silylated polyolefin (B), wherein the polypropylene resin (A) comprises a random polypropylene resin (Al) and a block polypropylene resin (A2) with a mass ratio (Mass of random polypropylene resin (A1)/Mass of block polypropylene resin (A2)) in the range of 20/80 to 80/20.

Abstract: A liquid-repellent layer forming resin composition comprises a polyolefin resin (A), a silylated polyolefin (B), and a compatibilizer (C) having a site compatible with the polyolefin resin (A) and a site compatible with the silylated polyolefin (B), wherein a polyolefin site of the silylated polyolefin (B) is incompatible with the polyolefin resin (A).