METHOD FOR PRODUCING LAMINATE FOR PACKAGE
To improve airtightness of a laminate containing a resin film.SOLUTION: There is provided a method for producing a laminate for a package which comprises: a step of subjecting a resin film 10 containing a polyethylene terephthalate to surface modification treatment by reactive ion etching; and a ste...
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Main Authors | , , |
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Format | Patent |
Language | English Japanese |
Published |
21.09.2022
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Subjects | |
Online Access | Get full text |
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Summary: | To improve airtightness of a laminate containing a resin film.SOLUTION: There is provided a method for producing a laminate for a package which comprises: a step of subjecting a resin film 10 containing a polyethylene terephthalate to surface modification treatment by reactive ion etching; and a step of laminating a gas barrier layer 11 on a surface subjected to surface modification treatment, wherein a laminate 20 contains the resin film 10 and the gas barrier layer 11 laminated on the resin film 10, the resin film 10 contains a terephthalic acid component, an isophthalic acid component and a naphthalene dicarboxylic acid component as a dicarboxylic acid component of a polyester, the molar ratio of the isophthalic acid component to the total mass of the dicarboxylic acid component and a diol component is 2×10-1 mol% or more and 9×10-1 mol% or less and the molar ratio of the naphthalene dicarboxylic acid component is 1×10-2 mol% or more and 6×10-2 mol% or less.SELECTED DRAWING: Figure 2
【課題】樹脂フィルムを含む積層体の気密性を向上する。【解決手段】包装体用積層体の製造方法であって、ポリエチレンテレフタレートを含む樹脂フィルム10に反応性イオンエッチングによる表面改質処理を行う工程と、表面改質処理が行われた表面にガスバリア層11を積層する工程と、を有し、樹脂フィルム10は、積層体20は、樹脂フィルム10と、樹脂フィルム10に積層されたガスバリア層11と、を含み、樹脂フィルム10は、ポリエステルのジカルボン酸成分として、テレフタル酸成分、イソフタル酸成分、及びナフタレンジカルボン酸成分を含み、ジカルボン酸成分及びジオール成分の合計質量に対するイソフタル酸成分のモル比率が2×10-1mol%以上9×10-1mol%以下であり、ナフタレンジカルボン酸成分のモル比率が1×10-2mol%以上6×10-2mol%以下である。【選択図】図2 |
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Bibliography: | Application Number: JP20210036758 |