Reclosable Pouch Dual Closure Mechanism Segmented Web
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Solution Overview
Problem
Existing reclosable pouches with two closure mechanisms face challenges in providing secure sealing and ease of use, as they often require high opening forces and can inadvertently open due to internal bursting forces or stress from contents.
Innovation Solution
A reclosable pouch design featuring two closure mechanisms with distinct profiles and attachment points, where one mechanism is secured to the pouch walls only at a single area, allowing for a perceived single closure point, reducing the force required for closure and minimizing inadvertent opening due to internal pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two closure mechanisms are both fully attached to pouch walls across their entire width, then sealing security is improved, but the force required to open the pouch increases and the mechanisms may inadvertently open due to internal pressure
Solution Approach 1:
The first web is segmented into an attached portion (laminated to pouch wall) and an unattached portion (free to move). This segmentation allows the closure mechanism to be secured at one location while maintaining flexibility elsewhere, reducing the force needed to open the pouch while preserving sealing security.
Solution Approach 2:
Different portions of the first web have different attachment qualities: the first portion is firmly laminated to the pouch wall for secure anchoring, while the second portion remains unattached to allow movement and reduce opening force. This local differentiation resolves the contradiction between security and ease of opening.
2Stability of the object's composition
If two closure mechanisms are both fully attached to pouch walls, then structural stability is improved, but the mechanisms may inadvertently open due to internal bursting forces
Solution Approach 1:
The first web is divided into attached and unattached portions, allowing the closure mechanism to be anchored at specific points while remaining flexible in other areas. This segmentation prevents uniform stress distribution that could lead to inadvertent opening while maintaining overall structural stability.
Solution Approach 2:
The attachment parameter is changed from fully attached to partially attached for the first web. This parameter change allows the closure mechanism to accommodate internal pressure variations without transmitting uniform stress across the entire web, thereby preventing inadvertent opening while maintaining structural integrity.
3Reliability
If closure mechanisms are positioned to provide secure sealing, then sealing effectiveness is improved, but the complexity of the closure system increases
Solution Approach 1:
The first web serves multiple functions: it provides structural support when attached, allows movement when unattached, and positions the closure mechanism. This multi-functionality reduces the need for additional components, maintaining simplicity while achieving effective sealing.
Solution Approach 2:
The unattached portion of the first web automatically adjusts its position based on pouch filling and closing actions, providing self-positioning functionality. This eliminates the need for complex adjustment mechanisms while ensuring proper closure mechanism alignment for effective sealing.
Data Source
AI summary
A reclosable pouch includes a body portion having first and second opposing sidewalls and a first web having a first portion attached to the first sidewall and a first unattached portion. The first web is disposed on an internal side of the first sidewall. The reclosable pouch further includes a second web having a second portion attached to the second sidewall and a second unattached portion. The second web is disposed on an internal side of the second sidewall. Additionally, the reclosable pouch includes a first closure mechanism having first and second closure profiles with the first closure profile disposed on the first web at the first attached portion and the second closure profile disposed on the second web at the second attached portion. Furthermore, the reclosable pouch includes a second closure mechanism having third and fourth closure profiles with the third closure profile disposed on the first web at the first unattached portion and the fourth closure profile disposed on the second web at the second unattached portion.