Hinged Package Raised Seal Line Gap Minimization
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Solution Overview
Problem
Conventional hinge-lid packages for smoking articles are prone to not closing properly, allowing contaminants like moisture and dirt to enter, and the use of locking mechanisms can lead to manufacturing complexity and damage.
Innovation Solution
A package design featuring a container with an inner frame and a lid hingedly connected, where a raised seal line minimizes the gap between the inner frame and the lid when closed, formed by structured ink or varnish, ensuring a secure seal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional hinge-lid packages are used without additional sealing features, then the package structure remains simple, but the gap between the lid and inner frame allows contaminants to enter
Solution Approach 1:
The patent applies a raised seal line at the specific location where the lid meets the inner frame to create a localized sealing feature. This raised seal line is formed only at the critical gap area rather than throughout the entire package structure, providing contamination protection precisely where needed while maintaining overall structural simplicity.
Solution Approach 2:
The patent modifies the geometric parameter of the sealing surface by creating a raised seal line with a specific height profile. This parameter change in the seal line's elevation creates an effective seal against the lid's recessed sealing surface, preventing contaminant entry through the gap without requiring complex mechanical structures.
2Reliability
If locking mechanisms are added to keep the package closed, then the closure reliability improves, but the manufacturing complexity increases and the locking mechanisms can be damaged
Solution Approach 1:
The patent removes the locking mechanism entirely from the package design and replaces it with a passive raised seal line structure. This extraction of the complex locking system eliminates manufacturing complexity and potential damage to locking components while maintaining closure functionality through the seal line's physical barrier against contaminants.
Solution Approach 2:
The raised seal line structure provides self-service sealing functionality that does not require additional locking mechanisms. The seal line's raised profile automatically engages with the lid's recessed surface when closed, creating a self-sealing effect that prevents contaminant entry without requiring complex active locking systems that can fail or be damaged.
3Manufacturing precision
If a raised seal line is formed on the inner frame and/or lid, then the sealing effectiveness improves by minimizing the gap, but the manufacturing process becomes more complex
Solution Approach 1:
The patent forms a raised seal line with a controlled height parameter (typically 0.05-2.0mm) on the inner frame and/or lid. This parameter change in the seal line's elevation creates an effective seal against the opposing surface, minimizing the gap to prevent contaminant entry. The raised seal line can be integrated into existing molding or forming processes, adding minimal complexity to manufacturing while achieving precise gap control.
Data Source
AI summary
The present disclosure relates to a package for a delivery system. The package includes a container and a lid hingedly connected to the container about a hinge line, and an inner frame received in the container. The inner frame has a portion that extends from the container which is received in the lid when the lid is closed. The package further includes a raised seal line that is formed on the portion of the inner frame and/or on an inner surface of the lid. The raised seal line is configured to minimize a gap between the portion of the inner frame and the inner surface of the lid when the lid is closed. The present disclosure also relates to a method of manufacturing the package.