Coating material for gas barrier, gas barrier film, and laminated body
US-2017210909-A1 · Jul 27, 2017 · US
Gas barrier packaging material
US10155365B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10155365-B2 |
| Application number | US-201615349622-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 11, 2016 |
| Priority date | May 15, 2014 |
| Publication date | Dec 18, 2018 |
| Grant date | Dec 18, 2018 |
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- Title
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Abstract
Official abstract text for this publication.
A gas barrier packaging material includes: a support; and a gas barrier layer made up of an adhesive layer (A) which is disposed on one surface of the support and contains an aqueous polyurethane resin (a1), a water soluble polymer (a2) and a curing agent (a3) with a formulation ratio of the aqueous polyurethane resin (a1) and the water soluble polymer (a2) in the range from 10:90 to 60:40 in mass ratio, and a barrier layer (B) which is formed on the adhesive layer (A).
First claim
Opening claim text (preview).
What is claimed is: 1. A gas barrier packaging material comprising: a support; and a gas barrier layer made of an adhesive layer (A) which is disposed on one surface of the support and contains an aqueous polyurethane resin (a1), a water soluble polymer (a2) that is at least one of a polyvinyl alcohol polymer and its derivatives and a curing agent (a3) with a formulation ratio of the aqueous polyurethane resin (a1) and the water soluble polymer (a2) in the range from 10:90 to 60:40 in mass ratio, and a barrier layer (B) which is formed on the adhesive layer (A), wherein the barrier layer (B) contains at least a polyvalent metal salt of a polycarboxylic acid polymer (b1), and, when an infrared absorption spectrum of the barrier layer (B) is measured by a transmission method, a ratio (α/β), which is a ratio of a maximum peak height (α) of an absorbance in the range from 1490 cm −1 to 1659 cm −1 to a maximum peak height (β) of an absorbance in the range from 1660 cm −1 to 1750 cm −1 , is 1 or more. 2. The gas barrier packaging material of claim 1 , wherein the support contains polyolefin.
Assignees
Inventors
Classifications
with two or more layers, where at least one layer of a composition contains a polymer binder · CPC title
Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA · CPC title
All layers being polymeric · CPC title
of paper or cardboard · CPC title
Metallic coating · CPC title
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Frequently asked questions
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- What does patent US10155365B2 cover?
- A gas barrier packaging material includes: a support; and a gas barrier layer made up of an adhesive layer (A) which is disposed on one surface of the support and contains an aqueous polyurethane resin (a1), a water soluble polymer (a2) and a curing agent (a3) with a formulation ratio of the aqueous polyurethane resin (a1) and the water soluble polymer (a2) in the range from 10:90 to 60:40 in m…
- Who is the assignee on this patent?
- Toppan Printing Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification B32B27/08. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Dec 18 2018 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 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).