Elliptical Laminated Hole Composite Pack Pouring Element
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Solution Overview
Problem
Existing composite packs with laminated holes face limitations in outflow diameter and production costs due to restrictive hole shapes and sizes, leading to suboptimal pouring performance and increased production expenses for new tools and recalibration.
Innovation Solution
The composite pack design features a cutting element with a hollow cylinder shape and screw cap, where the cutting line extends beyond the laminated hole's edge, allowing an optimally sized outflow diameter, and includes guidance means with varying thread pitches and interruptions to reduce friction and enhance penetration, along with an eccentric arrangement of the pouring element to accommodate high production tolerances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the cutting element is designed with a larger cylinder diameter to achieve a larger outflow diameter, then pouring efficiency is improved, but the cutting element becomes less stable and more difficult to guide through the laminated hole
Solution Approach 1:
The cutting element is divided into multiple functional zones along its length: an upper guidance section with external threads for stable engagement with the basic body, a middle cutting section that extends beyond the laminated hole to create the pouring opening, and a lower section for sealing. This segmentation allows each part to perform its specific function optimally without compromising overall stability.
Solution Approach 2:
The cutting element transitions from a simple cylindrical shape to a complex three-dimensional form with varying diameters, thread structures, and extended cutting edges. By utilizing dimensional variations along the cylindrical axis, the design achieves both guidance stability and effective cutting capability simultaneously.
2Productivity
If the laminated hole is made larger to improve outflow, then pouring performance is enhanced, but production costs increase due to new tools and recalibration requirements
Solution Approach 1:
The laminated hole is pre-formed in the composite material before the pouring element is attached. This preliminary action allows the hole to be created using existing production tools and processes, avoiding the need for new tooling. The cutting element then utilizes this pre-prepared hole to create the final pouring opening, combining economic manufacturing with optimized pouring performance.
Solution Approach 2:
The invention optimizes the parameters of the laminated hole (size, shape, position) to match the cutting element's cutting line. By carefully selecting and adjusting these parameters within existing production capabilities, the design achieves larger outflow diameter without requiring complete tooling redesign, thus balancing performance improvement with manufacturing cost constraints.
3Productivity
If the cutting line extends beyond the laminated hole edge to achieve optimal outflow diameter, then pouring efficiency is improved, but the cutting element requires more complex guidance means to maintain stability
Solution Approach 1:
The guidance system is segmented into multiple interaction points: external threads on the cutting element engage with corresponding threads on the basic body, creating stable rotational guidance. Additional guidance features such as ribs, grooves, or cam surfaces are distributed along the cutting element's length, providing continuous directional control as the cutting line extends beyond the laminated hole.
Solution Approach 2:
Different sections of the cutting element have different guidance requirements. The upper section, where stability is most critical, has more extensive thread engagement and guidance features. The middle cutting section, where the cutting line extends beyond the hole, has localized guidance elements that provide directional control only where needed. This local differentiation reduces overall complexity while maintaining stability.
Data Source
AI summary
The invention illustrates and describes a composite pack, in particular a parallelepipedal cardboard/plastic composite pack for pourable products, having an elliptical laminated hole which is provided in the composite pack gable, with an elliptical main axis and an elliptical minor axis, and a pouring element, comprising a basic body, a cutting element movably guided in the basic body and having the shape of a hollow cylinder with a cylinder outer diameter and a resealable screw cap, wherein the screw cap serves for opening the composite pack for the first time by activation of the cutting element, which thus forms a pouring opening in the region of the laminated hole and wherein first guidance means configured on the cutting element interact with second guidance means configured on the basic body. In order to create the largest possible outflow diameter, while maintaining an already existing variant of a laminated hole, or in order to optimise the system of laminated hole and cutting element below its normal limits, it is provided that the cylinder external diameter is at least as big as the length of the elliptical minor axis. This leads to the side wall of the hollow cylinder-shaped cutting element extending the laminated hole at least in sections.