Can lid
US-12157160-B2 · Dec 3, 2024 · US
Method for manufacturing easy open end
US9079239B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9079239-B2 |
| Application number | US-200913131150-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 26, 2009 |
| Priority date | Nov 27, 2008 |
| Publication date | Jul 14, 2015 |
| Grant date | Jul 14, 2015 |
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- Title
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Abstract
Official abstract text for this publication.
A method of manufacturing an easy open end includes the steps of using a laminated steel sheet with resin films formed on both surfaces of the laminated steel sheet, and forming a panel structure and a score. A score die used for forming the score includes a scoring edge having a cross section in which a tip is a curve and two sides with the tip interposed therebetween are tangent to the curve. The tip is the curve having a curvature radius ranging from 0.2 to 0.4 mm, and the two sides have elevation angles θ in a range of 0.3≦tan θ≦1.0 to an end surface. The panel structure is formed by a motion that is synchronous with a motion in which the score die is pressed to a surface of the laminated steel sheet during the formation of the score.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method of manufacturing an easy open end, the method including the steps of using a laminated steel sheet with resin films formed on both surfaces of the laminated steel sheet, and forming a panel structure and a score, wherein a score die used for forming the score includes a scoring edge having a cross section in which a tip is a curve and two sides with the tip interposed therebetween are tangent to the curve, wherein the tip is the curve having…
Assignees
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Classifications
Operations & Transport · mapped topic
Cross-Sectional Technologies · mapped topic
- B21D51/443Primary
Operations & Transport · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
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Frequently asked questions
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- What does patent US9079239B2 cover?
- A method of manufacturing an easy open end includes the steps of using a laminated steel sheet with resin films formed on both surfaces of the laminated steel sheet, and forming a panel structure and a score. A score die used for forming the score includes a scoring edge having a cross section in which a tip is a curve and two sides with the tip interposed therebetween are tangent to the curve.…
- Who is the assignee on this patent?
- Kojima Katsumi, Kubo Hiroshi, Yamanaka Yoichiro, and 3 more
- What technology area does this patent fall under?
- Primary CPC classification B21D51/443. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Jul 14 2015 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).