Wide-Opening Glass Container Sealing Lip Design
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Solution Overview
Problem
Wide-opening glass containers for fluid products face challenges in sealing and retention due to manufacturing tolerances and potential contamination from adhesives, especially when using traditional sealing methods like gluing, which can be incompatible with the product and fail to provide a secure attachment of dispensing members.
Innovation Solution
A container design featuring a single glass part with a wide opening and a closure member equipped with a sealing lip that forms a radial pressure against the neck, combined with a gluing area accessible from outside to prevent contamination, and a seal to enhance retention and sealing, using materials like plastic and elastomers for resilience and compatibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a wide-opening glass container is used to improve aesthetics and allow internal decoration, then the visual appeal and design flexibility are enhanced, but the sealing reliability deteriorates due to significant manufacturing tolerances making it difficult to seal and close the container
Solution Approach 1:
The sealing system is divided into multiple functional components: an intermediate member with a sealing element for the primary seal, and a separate retaining member for mechanical retention. This segmentation allows each component to be optimized independently - the sealing element for tolerance compensation and the retaining member for mechanical strength.
Solution Approach 2:
An intermediate member is introduced between the closure member and the glass container neck. This intermediary component carries the sealing element and provides a compliant interface that accommodates manufacturing tolerances of the wide-opening glass container, enabling reliable sealing despite the challenging geometry.
2Reliability
If traditional gluing methods are used to seal the container, then the sealing function is achieved, but the risk of product contamination increases due to adhesive incompatibility and the need for additional retaining parts
Solution Approach 1:
The harmful adhesive is extracted from the sealing function. The sealing is achieved through a dedicated sealing element on the intermediate member that creates a mechanical seal, eliminating the need for adhesive and thereby removing the contamination risk associated with product-contact adhesives.
Solution Approach 2:
The sealing element is designed as a separate, replaceable component that can be easily manufactured and replaced if needed. This disposable-like approach ensures that sealing functionality is maintained without permanent adhesive bonds that could contaminate the product.
3Strength
If a hoop and gasket are forcibly inserted into the neck during assembly, then the closure member can be retained, but the friction causes the gasket to roll onto itself storing energy that creates vertical force requiring additional retaining parts
Solution Approach 1:
The sealing element is designed with elastic compliance, allowing it to deform during insertion and then return to its original shape. This dynamic behavior absorbs the insertion energy through elastic deformation rather than transmitting it as vertical force, eliminating the need for additional retaining parts.
Solution Approach 2:
The compliant sealing element acts as a cushioning element that absorbs the impact and friction energy during forced insertion. By designing the sealing element with inherent compliance, the system预先 prepares for the insertion energy, preventing gasket rolling and vertical force generation.
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 solution effectively seals the container, prevents contamination, and ensures secure attachment of the dispensing member, improving the aesthetics and functionality of wide-opening glass containers by maintaining a tight seal and compatibility with various dispensing systems.
Implementation Method 1
the closure member further comprises at least one sealing lip suitable for forming a sealing area between the neck and the closure member
Implementation Method 2
a seal to enhance retention and sealing, using materials like plastic and elastomers for resilience and compatibility
Data Source
AI summary
A container for fluid product comprises a single glass part. The single glass part comprises a shoulder and a neck which define an internal channel. The container for fluid product comprises a closure member tightly mounted in the internal channel. The closure member is suitable for carrying a dispensing member capable of dispensing content from the container for fluid product to outside the container for fluid product through the closure member. The closure member further comprises at least one sealing lip suitable for forming a sealing area between the neck and the closure member.