Curved Side Wall Profile for Moisture-Sensitive Curable Product Dispensing
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Solution Overview
Problem
Existing containers for moisture-sensitive curable products, such as cyanoacrylate, face challenges in maintaining shelf life due to premature curing caused by inadequate moisture barriers and lack of flexibility, which complicates controlled and predictable dispensing.
Innovation Solution
A container design with a curved side wall profile that regulates compressive force and distance, providing a compressive force absorber to prevent yield points and ensure consistent dispensing, while maintaining suitable barrier properties using materials like HDPE and polypropylene, allowing for improved flexibility and controlled dispensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the container wall is made with uniform thickness to improve moisture barrier and shelf life, then product stability is improved, but container flexibility and ease of dispensing deteriorate
Solution Approach 1:
The container wall is divided into distinct zones with different thicknesses: a first zone with greater thickness for moisture barrier and a second zone with lesser thickness for flexibility. This segmentation allows each zone to perform its specific function optimally.
Solution Approach 2:
Different portions of the container wall are assigned different thickness qualities based on their functional requirements. The base and lower side wall portions have greater thickness for barrier protection, while the upper side wall portions have lesser thickness for dispensing flexibility.
2Duration of action of stationary object
If the container material provides sufficient moisture barrier to extend shelf life, then product stability is improved, but container flexibility for controlled dispensing deteriorates
Solution Approach 1:
The container structure is segmented into barrier-focused regions (base, lower walls) and flexibility-focused regions (upper side walls, dispensing areas), allowing simultaneous optimization of both shelf life and dispensing control.
Solution Approach 2:
The container utilizes composite construction with varying material thicknesses and potentially different material compositions in different zones to achieve both moisture barrier performance and mechanical flexibility for controlled dispensing.
3Ease of operation
If the container is made flexible to allow manual squeezing dispensing, then ease of operation is improved, but product stability and moisture barrier deteriorate
Solution Approach 1:
The container wall thickness is segmented so that flexible zones are strategically placed in areas requiring manipulation while thicker barrier zones are positioned at the base and lower portions to maintain moisture protection.
Solution Approach 2:
Flexibility is locally introduced in specific wall portions where manual manipulation is needed, while maintaining high barrier quality in other portions where moisture protection is critical, achieving both dispensing ease and product stability.
Data Source
AI summary
A container suitable for dispensing dispensable moisture sensitive curable products such as a CA with a container body which forms an internal reservoir for holding the product a dispensing aperture provided in the container body. Opposing side wall have a curved profile along its path between the front and rear walls which is arranged to regulate a compressibility ratio between the compressive force regulated to move at least one of the front and rear walls toward the other and the distance compressed so that a yield point is not reached, within a compressive dispensing range of movement of said at least one wall, beyond which the container becomes substantially easier to compress. The dispensing force required is predictable and regular while a desired flexibility is achieved.