Corrugated Container Reinforcing Linerboard Bonding
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Solution Overview
Problem
Existing corrugated fiberboard containers used for shipping perishable goods face challenges in containment due to their susceptibility to failure, leading to product loss and increased costs, with current reinforcement methods being costly, labor-intensive, and environmentally detrimental.
Innovation Solution
A container design incorporating an additional linerboard bonded to the corrugated fiberboard structure, which enhances the structural integrity and reduces the need for external reinforcements, using materials like spunbonded olefin for the additional linerboard and aqueous-based or hot-melt adhesives for bonding, allowing for increased strength and cost-effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If multi-wall combinations or heavy linerboards are used to increase container strength, then container strength and leakage prevention are improved, but manufacturing cost and environmental impact worsen
Solution Approach 1:
The patent applies reinforcement selectively at critical stress points (bottom panels, gusset areas, and horizontal reinforcement zones) rather than uniformly throughout the entire container. This localized approach uses additional linerboard only where structural integrity is most needed, reducing overall material consumption compared to multi-wall combinations while maintaining necessary strength levels.
Solution Approach 2:
The patent creates a composite structure by bonding additional linerboard to the base corrugated fiberboard container walls and bottom panels. This composite construction combines the inherent strength of the corrugated medium with the reinforcement layer, achieving enhanced structural performance without the material intensity of full multi-wall constructions.
2Strength
If embedded filament-reinforcing tapes or internal reinforcement are used, then bulge and tear resistance are improved, but device complexity and manufacturing cost worsen
Solution Approach 1:
The patent removes complex internal reinforcement elements (filament tapes, internal strapping systems) and replaces them with a simpler external solution: additional linerboard bonded to the container's outer surface. This extraction of internal complexity while maintaining or improving strength characteristics directly addresses the contradiction.
Solution Approach 2:
Instead of placing reinforcement internally within the container walls, the patent inverts the approach by applying reinforcement externally to the outer surface of the container panels. This external reinforcement strategy achieves the same structural benefits with significantly reduced complexity and easier manufacturing.
3Reliability
If external tensioned strapping is used for reinforcement, then containment against dynamic forces is improved, but ease of manufacture and recycling worsen
Solution Approach 1:
The patent merges the reinforcement function with the container wall structure itself by bonding additional linerboard directly to the panels. This integration eliminates the need for separate strapping components and their associated application processes, making manufacturing more efficient while maintaining containment performance against dynamic forces.
Solution Approach 2:
The patent uses additional linerboard material that is homogeneous with the base container material (both being paper-based corrugated fiberboard components). This material compatibility simplifies manufacturing processes and ensures uniform bonding characteristics, unlike heterogeneous materials such as polymeric or metallic strapping that require specialized handling and application equipment.
4Strength
If polymeric or metallic reinforcements are used, then container strength is improved, but environmental recyclability worsens
Solution Approach 1:
The patent employs additional linerboard made from the same or similar paper-based corrugated fiberboard materials as the base container. This material homogeneity ensures that the reinforced container can be recycled together as a single material stream, avoiding the contamination and processing complications that arise from combining dissimilar materials like polymeric or metallic reinforcements with paperboard.
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 additional linerboard reinforcement increases the container's strength and durability, reducing the risk of leakage and breakage, while minimizing environmental impact and manufacturing costs, allowing for more efficient and cost-effective production.
Implementation Method 1
at least one additional linerboard being coupled to at least a portion of the first linerboard
Data Source
AI summary
A container is disclosed. The container comprises a side portion including a plurality of side panels. The container further comprises a bottom portion including a plurality of bottom panels. Each of the plurality of bottom panels extend from a respective one of the plurality of sides. The container includes a first linerboard, a second linerboard, at least one corrugated medium positioned between the first and second linerboards, and at least one additional linerboard being coupled to at least a portion of the first linerboard.