Popcorn Packaging Flap Closure Automation
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Solution Overview
Problem
Existing popcorn packaging devices face challenges in automating the closure mechanism and ensuring consistent volume for optimal popping, as the hooking system is complex and lacks variability to accommodate different kernel volumes, leading to potential burning or insufficient expansion.
Innovation Solution
A modified hooking system with a tab and slot design, where the tab has a protruding shape offset from its ends, allows for simplified automation of flap closure and optional volume expansion by deforming the flaps upward, and a production line with specific stations for automated closure and folding of the device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a hooking system with tabs is used to close the flaps, then the flaps can be kept in the closed position, but the automation of the closing process becomes very complex
Solution Approach 1:
The patent removes the tabs from the flaps entirely, extracting the problematic element that caused automation complexity. Instead of using tabs that require complex alignment and insertion mechanisms, the invention uses a simple overlapping flap design where the flaps interlock through their geometry alone, enabling straightforward automated closure without complex hooking mechanisms
Solution Approach 2:
Rather than using protruding tabs that need to be inserted into slots (a complex operation requiring precise alignment), the invention inverts the approach by using recessed shapes in one flap that receive protruding portions of the other flap. This reversal simplifies the automation process as the flaps naturally guide themselves into the correct position during closure
2Device complexity
If the box volume is fixed to ensure proper closure, then the closure mechanism is simple, but the popcorn may burn or not expand properly when kernel volume varies
Solution Approach 1:
The patent introduces a folding side wall mechanism that allows the box volume to dynamically adjust based on the amount of popcorn. The side walls can fold between different positions to increase or decrease the internal volume, enabling the same closure mechanism to work properly across a range of kernel volumes while maintaining simple closure geometry
Solution Approach 2:
The invention changes the volume parameter of the box by incorporating folding side walls that can assume multiple configurations. This allows the box to adapt its internal capacity to match the volume of popcorn being packaged, ensuring optimal popping conditions without requiring complex closure mechanisms for each volume variant
3Volume of moving object
If the side walls are folded manually after closure, then the device can be compacted for storage, but the folding process cannot be automated
Solution Approach 1:
The patent designs the side walls with pre-scored fold lines and hinge structures that enable automated folding. The preliminary configuration of the side wall geometry allows automated machinery to fold the walls along predetermined paths, transforming the manual folding process into an automated operation while achieving compact storage volume
Solution Approach 2:
The side walls are segmented into multiple sections with defined fold lines, allowing each segment to be independently manipulated by automated folding mechanisms. This segmentation enables the complex folding sequence to be broken down into discrete, automatable steps while achieving the compact storage configuration
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
Facilitates automated closure and volume adjustment for consistent popcorn expansion, simplifying the manufacturing process and ensuring optimal popping conditions.
Implementation Method 1
one of which is made of a material that facilitates the absorption of the energy of the electromagnetic waves, also called a 'susceptor'
Implementation Method 2
The tray is closed by a lid that is glued at the periphery with a hot-melt glue
Data Source
AI summary
A packaging and cooking device includes a bottom, top and four side walls, each including a first fold line parallel to and slightly distant from the bottom, a second fold line parallel to the first line, two opposing side walls including two diagonal fold lines in the portion of the side walls located above the first line, the top including two flaps, each having a free edge and connected to two opposing side walls and a hooking system enabling flaps to be held in closed position. The hooking system includes a tab connected to the free edge of a first flap and a cut-out, provided in a second flap for inserting the tab in an insertion direction, the cut-out extending in a direction approximately perpendicular to the insertion direction and including a projecting shape offset relative to the ends thereof and oriented in the direction opposite to the insertion direction.