Paper Composite Container With Oblique Bottom For Upright Stability
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Solution Overview
Problem
Flexible tube-type containers require modification to stand upright when placed on their bottom, while maintaining compatibility with existing bottle production lines and ensuring recyclability, as current designs are not recyclable and pose challenges in welding near cosmetic formulas.
Innovation Solution
A container design featuring a tubular body with at least 50% paper content, a bottom with an annular distal end and oblique portion forming an angle, allowing upright standing and easy attachment, and a laminate structure for recyclability, including a central disc and annulus with EVOH barrier layers for compatibility with production lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the container uses traditional plastic material for the tubular body, then it can be easily manufactured and sealed, but it is not recyclable and has high environmental impact
Solution Approach 1:
The tubular body is made of a composite material comprising at least 50% by weight of paper and at most 50% by weight of plastic, combining the recyclability and renewable properties of paper with the manufacturability and sealing properties of plastic. This composite structure resolves the contradiction between ease of manufacture and recyclability.
2Ease of manufacture
If the container bottom is designed with a ridge-shaped structure, then it can be sealed by welding the skirt to itself, but the container cannot stand upright on its bottom
Solution Approach 1:
Instead of designing the bottom to be sealed by welding the skirt to itself (traditional approach), the invention inverts the approach by making the bottom a separate piece that is attached to the tubular body. The bottom includes an annular distal end with a flat configuration that provides a stable base for the container to stand upright, while the tubular body is sealed by welding the edge of the skirt to itself. This inversion resolves the contradiction between ease of manufacture and standing capability.
3Adaptability or versatility
If the container is designed to stand upright on its bottom, then it is compatible with bottle production lines, but the welding operation near cosmetic formula becomes complex and risky
Solution Approach 1:
The container is segmented into distinct components: the tubular body and the bottom are separate pieces. The tubular body is sealed by welding the skirt to itself, while the bottom is a separate component with an annular distal end that provides standing capability. This segmentation allows the container to stand upright on its bottom (compatible with bottle production lines) while simplifying the welding operation, as the welding is performed on the tubular body away from the cosmetic formula containment area, reducing complexity and risk.
Data Source
AI summary
A container (1) extending along a longitudinal axis (X) and including a tubular body (10) having a longitudinal weld (11) substantially parallel to the axis (X), a bottom (20) and a head (30), the tubular body (10) including at least 50% by weight of paper, the bottom (20) including an annular distal end (21) and an oblique portion (22), the oblique portion (22) extending along an axis (Y) forming an angle α with the longitudinal axis (X), the tubular body (10) being attached to the bottom (20) at the level of the oblique portion (22).