Child-Resistant Reclosable Bag Zipper with Integrated Secondary Seals
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Solution Overview
Problem
Existing child-resistant reclosable bags often require graspable tabs for opening, which can be difficult to manipulate and result in manufacturing scrap, and the opening feature is typically not incorporated during bag fabrication, leading to a random location of tabs.
Innovation Solution
A child-resistant reclosable bag design featuring a zipper with primary and secondary seals, where the secondary seals are strategically located and integrated during bag fabrication, eliminating the need for graspable tabs and allowing for precise registration with the bag.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If graspable tabs are added to enable opening of child-resistant bags, then ease of operation is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent extracts the opening function from a separate tab component and integrates it into the zipper seal structure itself. The secondary seal is formed as part of the zipper assembly during molding, eliminating the need for separate graspable tabs while maintaining the ability to open the bag.
Solution Approach 2:
The patent combines the sealing function and the opening initiation function into a single integrated structure. The secondary seal serves both as a sealing element and as the engagement point for opening the bag, merging two functions that were previously separated in traditional tab designs.
2Ease of operation
If graspable tabs are used for opening, then ease of operation is improved, but manufacturing scrap and cost increase
Solution Approach 1:
The secondary seal is molded as an integral part of the zipper assembly, combining materials and reducing the need for separate components that would generate scrap during manufacturing. This eliminates the material waste associated with producing and attaching separate tabs.
3Ease of operation
If tabs are added after bag fabrication, then ease of operation is improved, but manufacturing precision and registration are worsened
Solution Approach 1:
The secondary seal is formed during the initial bag fabrication process rather than being added later. This preliminary integration ensures proper registration and alignment with the bag structure, eliminating positioning errors that would occur with post-fabrication attachment.
Solution Approach 2:
The secondary seal and bag structure are manufactured as an integrated assembly, ensuring precise registration without the need for separate attachment operations that would compromise alignment accuracy.
Data Source
AI summary
A child-resistant reclosable bag includes a container configured to retain one or more items, and a zipper coupled to the container. The zipper includes one or more primary seals, and one or more secondary seals at one or more defined locations. The one or more secondary seals at the one or more defined locations provide one or more areas to be engaged to peel open the container.