Seal End Carton Opening Reclosing Tab Mechanism
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Solution Overview
Problem
Seal end type folding cartons lack a convenient and secure mechanism for easy dispensing and reclosing of particulate products, which limits their usability in applications requiring repeated access and resealing.
Innovation Solution
A seal end carton design featuring an opening and reclosing feature created by perforation and fold lines, allowing the carton to be opened and closed without adding material, using a tab mechanism that secures the aperture with friction, enabling easy product dispensing and resealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a seal end carton is designed without an opening mechanism, then the carton structure remains simple and secure, but the ability to dispense and reclose contents is lost
Solution Approach 1:
The carton structure is segmented into separate functional components: a base body, a removable end panel, and an aperture closure mechanism. This segmentation allows the dispensing and reclosing functions to be added without redesigning the entire carton, resolving the contradiction between operational ease and structural simplicity.
Solution Approach 2:
An intermediate closure component is introduced between the aperture and the external environment. This closure mechanism acts as a mediator that allows the carton to maintain its simple overall structure while enabling controlled dispensing and secure reclosing through the aperture.
2Adaptability or versatility
If material is added to create an opening and reclosing feature, then dispensing and reclosing functionality is achieved, but manufacturing complexity and cost increase
Solution Approach 1:
The closure component is designed to perform multiple functions: sealing the aperture, enabling reclosing, and maintaining structural integrity. This multi-functionality reduces the need for additional specialized parts, allowing reclosing functionality to be added without proportionally increasing manufacturing complexity.
Solution Approach 2:
The design utilizes changes in material parameters such as fold lines, score lines, and adhesive application patterns to create the reclosing mechanism. By modifying parameters of existing carton materials rather than introducing entirely new components, the patent achieves adaptability while maintaining ease of manufacture.
3Reliability
If a complex opening mechanism is added, then reclosing capability is achieved, but the carton becomes harder to manufacture from a flat blank
Solution Approach 1:
The flat blank is pre-configured with scored lines, perforated lines, and pre-marked fold lines that guide the formation of the three-dimensional closure structure. This preliminary action ensures that when the blank is folded and sealed, the closure mechanism forms accurately without requiring high precision during the final assembly, resolving the contradiction between reliable closure and manufacturing precision.
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 carton allows for easy and secure dispensing of products while maintaining the contents within, facilitating repeated opening and closing without material addition, enhancing usability in various industries such as food storage and dispensing.
Implementation Method 1
using a tab mechanism that secures the aperture with friction
Data Source
AI summary
A seal end carton having a feature that creates an aperture and that may be opened and reclosed. The carton may be constructed from a flat carton blank that is then folded and sealed. The carton further includes an opening and reclosing feature that can be opened and reclosed multiple times.