Asymmetrical Pourable Package Upper Wall Design
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Solution Overview
Problem
Existing packages for pourable products require excessive welding of overlapping flaps, leading to internal tensions and potential breakages during manufacturing and use.
Innovation Solution
A package design with an asymmetrical upper wall and connection means using consecutive folded and overlapping flaps to connect the upper fin with the rear wall, reducing the need for excessive welding and distributing tension across the rear folding portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional symmetrical upper portions are used, then manufacturing is simpler, but functional improvements and pouring ease are limited
Solution Approach 1:
The patent applies asymmetry by configuring the upper portion with an asymmetrical front wall having different lateral edges - a first lateral edge extending further than the second lateral edge. This creates an asymmetrical upper surface that provides improved pouring characteristics while maintaining manufacturability through controlled welding of connection means.
2Shape
If excessive welding of overlapping flaps is performed, then functional forms are achieved, but internal tensions and breakages increase
Solution Approach 1:
The patent applies local quality by concentrating the welding operations in specific localized areas through connection means that join flaps in controlled sequences. Rather than excessive welding throughout, the connection means are positioned to provide structural support at critical locations, reducing overall welding volume and internal tensions while maintaining shape integrity.
Solution Approach 2:
The patent segments the upper portion formation into distinct connection means - a first connection means and a second connection means - that weld flaps in separate, controlled steps. This segmentation allows each welding operation to be optimized independently, reducing cumulative internal tensions and improving package reliability.
3Ease of manufacture
If conventional welding methods are used, then manufacturing is straightforward, but excessive material overlap is required
Solution Approach 1:
The patent applies preliminary action by pre-configuring the blank with specific flap arrangements and crease lines that guide the welding process. The connection means are designed to join flaps in predetermined sequences, allowing manufacturing to proceed efficiently with minimal material overlap while maintaining structural integrity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution allows for a stable and functional package with reduced risk of breakages, enabling easy pouring and efficient manufacturing without excessive material overlap.
Implementation Method 1
welding them together by heat or by ultrasound
Implementation Method 2
welding them together by heat or by ultrasound
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
Package (10) for pourable product, comprising a front wall (12), an opposing rear wall (13), a first (14) and a second (15) lateral wall interposed between them on respective opposing sides, a lower wall (16) and an opposing upper wall (17) essentially in contact with respective upper edges of the front (12) and rear (13) walls and inclined both with respect to the latter and also with respect to the lower wall (16).