Packaging Material Film, Packaging Material, Packaging Bag, And Package Body

Abstract: The present disclosure relates to a packaging material film comprising a first resin layer that includes a polyolefin resin and a filler. In a first embodiment, protrusions are formed on the first resin layer surface by the filler, and the water sliding angle at room temperature of an oil film on the first resin layer surface is 20° or less as measured by the below measurement method. In a second embodiment, the ratio Y/X of the surface area ratio Y of the first resin layer surface to the arithmetic mean height Sa X µm of the first resin layer surface is 0.4-8.0 µm-1. (Measurement method) A packaging material comprising a base material and a packaging material film is used to form a packaging bag such that a first resin layer is disposed on the inner side thereof. Oil-in-water dispersion-type content is enclosed in the packaging bag to form a package body, and the package body is subjected to a retort process and a boiling process. The water sliding angle at room temperature of an oil film formed on the first resin layer surface is measured using a contact angle meter under the conditions of a liquid amount of 20 µL and a velocity of 90°/min.

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