开罐用拉环及罐盖
By setting a convex arc surface and an inclined surface structure between the fixing part and the rolled edge part of the pull ring, the rigidity of the pull ring is enhanced, the problem of deflection after thinning is solved, and an easy-to-open can lid design is achieved.
CN122402908APending Publication Date: 2026-07-17ALUTEMILL HOLDINGS CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ALUTEMILL HOLDINGS CO LTD
- Filing Date
- 2025-12-31
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
The existing pull tabs have reduced stiffness after being thinned, making them prone to bending when opening the can and difficult to open the lid effectively.
Method used
A convex arc surface and an inclined surface structure are provided between the fixing part and the rolled edge part of the pull ring. The buckling part is formed by connecting the first inclined surface and the second inclined surface, which enhances the inner circumferential embedding of the rolled edge part and improves the rigidity.
Benefits of technology
It effectively prevents bending when opening the can, and the thin-walled pull ring makes it easy to open the can lid, ensuring a smooth can opening operation.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN122402908A_ABST
Abstract
本发明提供开罐用拉环及罐盖，实现开罐用拉环的薄壁化并防止开罐时的挠曲。该拉环在拉环主体上设置有：具有铆钉孔部的固定部、用于将开口片下压而开口的鼻部及为了将鼻部下压而被拉起的拉起部，拉环形成有卷边部，卷边部由周缘部向背面侧卷入而成，在沿拉环主体的长度方向的中心线上的纵截面中，卷边部由凸圆弧面形成，凸圆弧面的顶点部向上凸出，在凸圆弧面与固定部之间形成有与固定部连接的第一倾斜面、与凸圆弧面相连的第二倾斜面及连接这些倾斜面的凹状屈曲部，相对于固定部平面的第一倾斜面的倾斜角度θ1和第二倾斜面的倾斜角度θ2满足θ1>θ2，从固定部与第一倾斜面的连接部到凸圆弧面顶点在中心线上的距离为2.15mm以上且2.65以下，高度为0.95mm以上且1.25mm。
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Citation Information
Patent Citations
Tab, tab manufacturing tool, and tab manufacturing method
JP2009538803A
Tab for stay-on-tab type can lid, and method for manufacturing the same
JP2010179924A