MULTI-LAYER BARRIER FILM, METHOD FOR PRODUCING SAME, AND PACKAGING MATERIAL INCLUDING SAME
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United States of America
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Issued Date -
Dec 12, 2024
app pub date -
Oct 20, 2022
filing date -
Oct 20, 2022
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Abstract
Embodiments of the present invention relate to a multi-layer barrier film, a method for producing same, and a packaging material including same. The multi-layer barrier film has an oxygen permeability of at most 30 cc/m2·atm·day and is composed of at least two different resin layers that are alternately laminated. The two different resin layers include: a first resin layer including an aliphatic polyester-based polymer; and a second resin layer which is resin layer 2a including butenediol vinyl alcohol copolymer (BVOH) or resin layer 2b including ethylene vinyl alcohol (EVOH).
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