Corrugated Packaging Container With Integrated Closure Flaps
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Solution Overview
Problem
Existing corrugated cardboard packaging containers require multiple materials and complex manufacturing processes, leading to high costs and resource inefficiency.
Innovation Solution
A corrugated cardboard packaging container design using a single corrugated board element with partial or exclusive use of the outer face sheet for closure flaps, eliminating the need for a separate cardboard sleeve and reducing the number of manufacturing steps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a separate cardboard sleeve is used to form closure flaps around a corrugated board frame, then the packaging container can be closed at the lid and bottom, but the production process becomes complex and resource-intensive
Solution Approach 1:
The patent merges the frame and closure flap functions into a single corrugated board element. The corrugated board is designed with integrated lid flaps and bottom flaps that are part of the same continuous structure, eliminating the need for a separate cardboard sleeve while maintaining closure functionality
Solution Approach 2:
The single corrugated board element serves multiple functions simultaneously: it provides the structural frame, forms the closure flaps, and enables opening and closing operations. This multi-functional design replaces the traditional two-element system (frame + sleeve) with one universal component
2Strength
If multiple materials (corrugated board and cardboard) are used to manufacture the packaging container, then the container can achieve structural stability and closure functionality, but the production becomes costly and material-intensive
Solution Approach 1:
The patent uses homogeneous material throughout - a single corrugated board element with consistent structure and properties. This eliminates the need for different materials (corrugated board and cardboard) and reduces material variety while maintaining structural integrity and closure functionality
Solution Approach 2:
The corrugated board itself acts as a composite material structure with fluted intermediate layer and outer liners, providing both strength and flexibility. This internal composite structure replaces the need for multiple external material layers
3Strength
If the entire corrugated board is used to form closure flaps, then the container achieves high stability, but the ease of opening and closing is reduced
Solution Approach 1:
The patent applies different structural qualities to different parts of the corrugated board. The main body retains the full corrugated structure for stability, while the flap areas are designed with modified properties (partial flute removal or different configuration) to enable easier bending and opening/closing operations
Data Source
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AI summary
The present invention relates to a corrugated cardboard packaging container (10) comprising at least three interconnected side walls (12, 14, 16, 18) to form a receiving space (20) of the packaging container (10), at least one bottom flap (22, 24, 26, 28) for closing the bottom of the packaging container (10), wherein the bottom flap (22, 24, 26, 28) is hinged to a bottom end of the side wall (12, 14, 16, 18), and at least one lid flap (30, 32, 34, 36) for closing the lid of the packaging container (10), wherein the lid flap (30, 32, 34, 36) is hinged to a lid end of the side wall (12, 14, 16, 18) and the corrugated cardboard extends into the receiving space. (20) oriented inner cover sheet (44) of paper or cardboard,The invention comprises at least one first corrugated sheet (42) made of paper or cardboard applied to the inner cover sheet (44) and an outer cover sheet (40) made of paper or cardboard on the side of the first corrugated sheet (42) opposite the inner cover sheet (40), pointing away from the receiving space (20), wherein in the area of the lid flap (30, 32, 34, 36) and/or the bottom flap (22, 24, 26, 28) at least partially only the outer cover sheet (40) of the corrugated board is formed. The invention further relates to a blank (38) made of corrugated board for producing a receiving container (10) and a method for producing a blank.