Barrier film or sheet and laminated packaging material comprising the film or sheet and packaging container made therefrom
US-2018170019-A1 · Jun 21, 2018 · US
Layered polyester film
US11318662B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11318662-B2 |
| Application number | US-201616066212-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 26, 2016 |
| Priority date | Dec 28, 2015 |
| Publication date | May 3, 2022 |
| Grant date | May 3, 2022 |
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Abstract
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To provide a layered polyester film having excellent mechanical properties, transparency, heat resistance, and in particular excellent gas barrier property. A layered polyester film containing a polyester film and a thin film layer including mainly an inorganic compound, wherein the polyester film is a biaxially oriented polyester film including a dicarboxylic acid component containing mainly a furandicarboxylic acid and a glycol component containing mainly ethylene glycol, the thin film layer is formed on at least one surface of the polyester film, the inorganic compound is at least one of aluminum oxide and silicon oxide, and the layered polyester film has a plane orientation coefficient ΔP of not less than 0.100 and not more than 0.200, a film thickness of not thinner than 1 μm and not thicker than 300 μm, and an oxygen permeability of not less than 0.1 mL/m 2 /day/MPa and not more than 80 mL/m 2 /day/MPa under a temperature of 23° C. and a humidity of 65%.
First claim
Opening claim text (preview).
The invention claimed is: 1. A layered polyester film comprising a polyester film and an inorganic compound layer including mainly an inorganic compound, wherein the polyester film is a biaxially oriented polyester film including a dicarboxylic acid component containing mainly a furandicarboxylic acid and a glycol component containing mainly ethylene glycol, the inorganic compound layer is formed on at least one surface of the polyester film, the inorganic compound is at least one of aluminum oxide and silicon oxide, and the layered polyester film has a plane orientation coefficient ΔP of not less than 0.100 and not more than 0.200, a film thickness of not thinner than 1 μm and not thicker than 300 μm, and an oxygen permeability of not less than 0.1 mL/m 2 /day/MPa and not more than 80 mL/m 2 /day/MPa under a temperature of 23° C. and a humidity of 65%. 2. The layered polyester film according to claim 1 , wherein the polyester film has a heat shrinkage rate of not less than 0.01% and not more than 30% when heated at 150° C. for 30 minutes. 3. The layered polyester film according to claim 1 , wherein the polyester film has a heat shrinkage rate of not less than 0.01% and not more than 20% when heated at 150° C. for 30 minutes. 4. The layered polyester film according to claim 1 , wherein the polyester film has a heat shrinkage rate of not less than 0.01% and not more than 10% when heated at 150° C. for 30 minutes.
Assignees
Inventors
Classifications
- C08J7/0423Primary
with at least one layer of inorganic material and at least one layer of a composition containing a polymer binder · CPC title
Resistant to heat · CPC title
Polyesters, e.g. PET, i.e. polyethylene terephthalate · CPC title
Heat stability · CPC title
Dicarboxylic acids and dihydroxy compounds · CPC title
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Frequently asked questions
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- What does patent US11318662B2 cover?
- To provide a layered polyester film having excellent mechanical properties, transparency, heat resistance, and in particular excellent gas barrier property. A layered polyester film containing a polyester film and a thin film layer including mainly an inorganic compound, wherein the polyester film is a biaxially oriented polyester film including a dicarboxylic acid component containing mainly a…
- Who is the assignee on this patent?
- Toyo Boseki, Furanix Technologies Bv
- What technology area does this patent fall under?
- Primary CPC classification C08J7/0423. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue May 03 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 12 related publications on this page (citations in our corpus or others sharing the same primary CPC).