Film for packaging materials, packaging materials equipped therewith, packaging bags and packaging bodies

Abstract

Heat treatment can impart excellent slipperiness to oil-in-water dispersion contents. To provide films for packaging materials, etc. [Solution] The packaging film of the present disclosure comprises a first resin layer containing a polyolefin resin and a porous filler. The ratio Y / X of the thickness X μm of the first resin layer to the average particle diameter Y μm of the porous filler is 0.02 to 3.5, and the content of the porous filler in the first resin layer is 0.5 to 30% by mass. The packaging material of the present disclosure also comprises a base material and a packaging film provided on the base material. In the above packaging material, the packaging film is made of the above packaging film, and the surface of the first resin layer of the packaging film opposite to the base material is exposed.

Claims

[Claim 1] The first resin layer comprises a polyolefin resin and a porous filler, The ratio Y / X of the thickness X μm of the first resin layer to the average particle diameter Y μm of the porous filler is 0.02 to 3.

5. A packaging film in which the content of the porous filler in the first resin layer is 0.5 to 30% by mass. [Claim 2] The packaging film according to claim 1, wherein the oil absorption capacity of the porous filler is 100 to 380 mL / 100 g. [Claim 3] The packaging film according to claim 1 or 2, wherein the arithmetic mean roughness Sa of the surface of the first resin layer is 2.0 μm or less. [Claim 4] The packaging film according to any one of claims 1 to 3, wherein the average particle size of the porous filler is 5 μm or more. [Claim 5] The packaging film according to any one of claims 1 to 4, wherein the porous filler has a main body and a covering portion that covers at least a part of the surface of the main body, and the covering portion is made of a hydrophobic material. [Claim 6] The packaging film according to any one of claims 1 to 5, wherein the first resin layer further contains at least one additive selected from the group consisting of an elastomer composed of a block copolymer of polypropylene and polyethylene, a polypropylene-based elastomer, and a polyethylene-based elastomer. [Claim 7] Substrate and A packaging film provided on the substrate, Equipped with, The aforementioned packaging film is made from the packaging film described in any one of claims 1 to 6. A packaging material in which the surface of the first resin layer of the packaging film that is opposite to the substrate is exposed. [Claim 8] A packaging bag for containing oil-in-water dispersion contents, A packaging bag formed using the packaging material described in claim 7, wherein the first resin layer is arranged on the inside. [Claim 9] The packaging bag according to claim 8, A package comprising an oil-in-water dispersion type contents sealed inside the aforementioned packaging bag.

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