Asymmetric Pouring Opening in Packaging Material to Reduce Spilling
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Solution Overview
Problem
Existing packaging containers for pourable products, particularly smaller sizes, suffer from spilling issues due to the flow behavior of the contents, which is not adequately addressed by current multilayer packaging materials.
Innovation Solution
A multilayer packaging material with elongated, asymmetrically shaped holes and a rupturable separation element, designed to improve the outpouring behavior of pourable products by allowing air entry and preventing spilling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a circular hole is used in the packaging material, then the structure is simple and easy to manufacture, but spilling occurs during outpouring of the pourable product
Solution Approach 1:
The patent applies asymmetry by changing the hole shape from circular to elongated with a specific aspect ratio. The elongated hole has a length-to-width ratio between 1.5:1 and 3:1, creating an asymmetric geometry that modifies the flow dynamics of the pourable product. This asymmetric shape allows for better flow control and prevents spilling while maintaining ease of manufacture through standard forming processes.
2Reliability
If the hole size is reduced to prevent spilling, then outpouring control improves, but the flow behavior deteriorates with gulping and air entrapment
Solution Approach 1:
The patent applies dimensionality change by transitioning from a circular hole (isotropic in two dimensions) to an elongated hole (anisotropic in two dimensions with specific aspect ratio). This dimensional modification creates a directional flow path that allows controlled outpouring while accommodating air entry through the elongated geometry, preventing gulping and improving overall flow behavior.
3Reliability
If an elongated asymmetric hole is used, then outpouring behavior improves with reduced spilling, but the manufacturing complexity increases
Solution Approach 1:
The patent applies parameter changes by modifying the geometric parameters of the hole - specifically the aspect ratio (length-to-width ratio between 1.5:1 and 3:1) and the dimensions (length 5-15mm, width 2-5mm). These parameter changes optimize the flow characteristics and outpouring behavior while maintaining compatibility with existing manufacturing processes, thus not significantly increasing structural complexity.
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 design enhances the flow characteristics of pourable products, reducing spilling and ensuring smooth discharge without gulping, while maintaining structural integrity and cost-effectiveness.
Implementation Method 1
allowing air entry and preventing spilling
Implementation Method 2
each covered with a respective rupturable separation element, so as to allow the outpouring of the pourable product after partial or full removal of the separation element. Prior to its partial or full removal each separation element protects the pourable product present within the packaging container from an (hostile) outer environment
Data Source
AI summary
A packaging material for the formation of packaging containers comprising at least a base layer having a hole and at least one separation element covering the hole. The hole extends within a plane being defined by a longitudinal axis and a transversal axis orthogonal to the longitudinal axis. An imaginary longitudinal line parallel to the first longitudinal axis and an imaginary transversal line parallel to the transversal axis mutually intersect at a center point of the hole. A first maximum extension of the hole along the imaginary longitudinal line is larger than a second maximum extension of the hole along the imaginary transversal line. The hole is asymmetric with respect to the imaginary transversal line.