Internally Reinforced Bag Header Seal
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Solution Overview
Problem
Conventional methods for reinforcing bag handles often compromise the integrity and appearance of large bags by adding extra material externally, which can interfere with graphics and create undesirable edges, while internal reinforcement methods like gussetting may detract from the bag's appearance and are not always effective.
Innovation Solution
The method involves internally reinforcing the bag header with a reinforcing material sealed within the bag material, using a seal that passes through both layers of the bag material and the reinforcing material, ensuring the reinforcing material is positioned internally and securely attached, allowing for stronger handles without external interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If extra material is added externally to reinforce the handle area, then the handle strength is improved, but the appearance of the bag is compromised and graphics are interrupted
Solution Approach 1:
Instead of adding reinforcing material to the exterior of the bag as in conventional approaches, this patent places the reinforcing material on the interior side of the bag header. The reinforcing material is positioned between the bag material layers and sealed within the bag structure, thereby maintaining exterior appearance while providing interior reinforcement for handle strength.
Solution Approach 2:
The reinforcing material is nested within the bag structure by placing it between the bag material layers. The bag material is folded over the reinforcing material and sealed to contain it internally, creating a nested configuration where the reinforcing material is embedded within the bag header structure without protruding to the exterior.
2Strength
If gusseted edge is created by folding material into itself, then the handle area strength is improved, but the bag appearance is compromised and manufacturing complexity increases
Solution Approach 1:
The patent combines the reinforcing material placement with the bag sealing process. The reinforcing material is positioned and then sealed to the bag material in a single integrated operation, rather than requiring separate gussetting and folding steps. This merging of operations simplifies the manufacturing process while achieving the same reinforcement effect.
3Strength
If extra strip of material is applied to exterior of bag, then the handle strength is improved, but the graphics printing quality is compromised due to interference with printed graphics
Solution Approach 1:
Instead of applying reinforcing material to the exterior where graphics are printed, the patent inverts the approach by placing the reinforcing material on the interior side of the bag header. This allows graphics to be printed on the exterior surface without interruption or interference from reinforcing material edges or attachments.
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
This approach enhances the strength of the bag handles, reducing the risk of deformation or breakage during handling, while maintaining a smooth exterior for graphic printing and improving user comfort, all within a streamlined manufacturing process.
Implementation Method 1
applying a seal that passes through the bag material and the reinforcing material
Data Source
AI summary
Systems, devices, and methods are described for providing a bag having an internally reinforced header. A reinforcing material is combined with a bag material to provide strength to the reinforced header. The reinforcing material and the bag material are aligned during manufacturing such that the reinforcing material is positioned in a header area of a bag formed by folding the bag material. A seal that passes through both the reinforcing material and the bag material retains the reinforcing material within the bag header. A bag handle may then be punched into the header through the bag material and the reinforcing material.