Reinforced Package Liner Attachment System
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Solution Overview
Problem
Existing methods for forming reinforced packages struggle to efficiently combine flexible liners with rigid carton constructs, particularly in accommodating articles of varying shapes and sizes, and ensuring secure sealing and support for products like dry bulk or liquid materials.
Innovation Solution
A system and method involving a blank conveyor and a liner-forming assembly that seals and cuts a tubular web to attach a flexible liner to a carton blank, using heat-sealable materials like polyethylene, and forming a reinforced package with sealed margins and hemmed edges for enhanced support and product containment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a flexible liner is attached to a rigid carton blank to form a reinforced package, then the package can accommodate articles of varying shapes and sizes and provide secure containment, but the process complexity increases due to the need for sealing and attaching the liner to the blank
Solution Approach 1:
The patent combines the liner-forming operations (sealing and cutting) with the blank conveying process into an integrated system. The liner is formed and attached to the blank in a continuous process where the liner-forming assembly is positioned along the blank conveyor, merging multiple operations into a unified workflow that reduces overall process complexity.
Solution Approach 2:
The liner is formed into a tubular web with sealed margins and hemmed edges before being attached to the blank. This preliminary formation of the liner structure allows for standardized attachment processes and ensures the liner is ready for immediate attachment, reducing on-the-spot complexity during package assembly.
2Reliability
If heat-sealable materials like polyethylene are used to seal the tubular web, then secure sealing and product containment are achieved, but the manufacturing process requires additional sealing equipment and energy input
Solution Approach 1:
The patent utilizes the phase transition properties of heat-sealable materials like polyethylene, which melt and bond when heated, then solidify to form secure seals. This phase change mechanism provides reliable sealing with controlled energy input, as the material itself facilitates the bonding process through its thermal properties rather than requiring complex external bonding systems.
3Productivity
If the liner is formed by sealing and cutting a tubular web in real-time, then production efficiency is improved, but the precision of cutting and sealing must be maintained to ensure proper liner formation
Solution Approach 1:
The patent replaces traditional mechanical cutting and sealing methods with a coordinated system where the liner-forming assembly uses controlled thermal and mechanical actions along the moving blank conveyor. The sealing and cutting operations are synchronized with the conveyor motion, allowing real-time formation while maintaining precision through coordinated control rather than complex mechanical positioning systems.
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 solution enables the creation of robust, versatile reinforced packages that can hold diverse products by securely attaching a flexible liner to a rigid carton, providing effective support and containment while allowing for easy loading and sealing, thus addressing the challenges of shape accommodation and product security.
Implementation Method 1
a sealer that at least partially engages the first web and the second web to at least partially seal at least a portion of the first web and the second web together to form a sealed margin of the tubular web
Data Source
AI summary
A method of forming reinforced packages. The method can comprise moving a blank in a machine direction on a blank conveyor, and forming a tubular web while moving a first web of material and a second web of material in the machine direction. The forming the tubular web can comprise at least partially sealing at least a portion of the first web and the second web together to form a sealed margin of the tubular web. The method further can comprise forming a liner by cutting the tubular web, forming an attached blank by attaching the liner to the blank, and moving the attached blank in the machine direction on the blank conveyor.