Laminate, and packaging material, packaging bag and stand-up pouch each comprising said laminate, and multi-layer substrate
US-2021023828-A1 · Jan 28, 2021 · US
Multilayer body and packaging material
US12565028B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12565028-B2 |
| Application number | US-202318332888-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 12, 2023 |
| Priority date | Dec 17, 2020 |
| Publication date | Mar 3, 2026 |
| Grant date | Mar 3, 2026 |
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- Title
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- Abstract
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- First independent claim
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- CPC / IPC classifications
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Abstract
Official abstract text for this publication.
This multilayer body is provided with a base layer, an intermediate layer, a heat seal layer, a first adhesive layer that is provided between the base layer and the intermediate layer, and a second adhesive layer that is provided between the intermediate layer and the heat seal layer. The base layer, the intermediate layer, and the heat seal layer are configured to include polyethylene. In a case where the base layer is a stretched polyethylene film, the intermediate layer is an unstretched polyethylene film, and in a case where the intermediate layer is a stretched polyethylene film, the base layer is an unstretched polyethylene film. The proportion of polyethylene in the multilayer body is 90% by mass or more.
First claim
Opening claim text (preview).
What is claimed is: 1 . A multilayer body comprising: a base layer; an intermediate layer; a heat seal layer; a first adhesive layer that is provided between the base layer and the intermediate layer, wherein the first adhesive layer is obtained by curing an adhesive having a gas barrier property; and a second adhesive layer that is provided between the intermediate layer and the heat seal layer, wherein the second adhesive layer is obtained by curing an adhesive having a gas barrier property, wherein the base layer, the intermediate layer, and the heat seal layer are configured to include polyethylene, wherein the base layer is a stretched polyethylene film, and the intermediate layer is an unstretched polyethylene film, and wherein a proportion of polyethylene in the multilayer body is 90% by mass or more. 2 . The multilayer body according to claim 1 , wherein any one of the base layer and the intermediate layer includes a gas barrier layer. 3 . The multilayer body according to claim 2 , wherein the gas barrier layer includes a deposited layer. 4 . The multilayer body according to claim 3 , wherein the deposited layer is formed of metal oxide. 5 . The multilayer body according to claim 1 , wherein the base layer includes an ink layer on a first surface facing the intermediate layer. 6 . The multilayer body according to claim 5 , wherein the ink layer has a light shielding property. 7 . A packaging material formed of the multilayer body according to claim 1 by joining the heat seal layer.
Assignees
Inventors
Classifications
- B65D65/40Primary
Applications of laminates for particular packaging purposes {(B65D1/0215, B65D1/28, B65D3/22, B65D5/0281, B65D5/563, B65D9/30, B65D29/02, B65D31/02, B65D75/26, B65D77/2024, B65D81/1275, B65D81/3811, B65D81/3823, B65D81/3834, B65D81/3846, B65D81/3858, B65D81/3874, B65D81/3886, B65D81/3897 take precedence; laminates per se or laminated packages characterised by the composition or)} · CPC title
Packaging equipment or accessories not otherwise provided for · CPC title
Water vapor barrier · CPC title
Oxygen barrier · CPC title
Resistant to cut · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US12565028B2 cover?
- This multilayer body is provided with a base layer, an intermediate layer, a heat seal layer, a first adhesive layer that is provided between the base layer and the intermediate layer, and a second adhesive layer that is provided between the intermediate layer and the heat seal layer. The base layer, the intermediate layer, and the heat seal layer are configured to include polyethylene. In a ca…
- Who is the assignee on this patent?
- Toppan Holdings Inc
- What technology area does this patent fall under?
- Primary CPC classification B65D65/40. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Mar 03 2026 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).