Rotatable Cutter Dispensing Stick for Hygienic Product Application
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Solution Overview
Problem
Conventional dispensing mechanisms for semi-solid products like lip balm, lipstick, and glue expose the product to ambient air, leading to drying out and contamination, which affects product efficacy and hygiene, and poses health risks due to bacterial and fungal growth.
Innovation Solution
A dispensing stick design featuring a rotatable disc-shaped cutter element with a curved blade hinged to the cylindrical body, allowing for controlled exposure and protection of the product, which can be retrofitted to existing designs, incorporating a sealing gasket to prevent external contaminants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the actuator mechanism pushes the entire mass of the product upwards for dispensing, then the product becomes accessible for application, but the product is exposed to ambient air leading to drying out and contamination
Solution Approach 1:
The product dispensing system is segmented into two distinct operational phases: a protected storage state where the product mass remains sealed within the container, and an active dispensing state where only a small exposed portion is made accessible. The cutter element creates a sealed dispensing interface that separates the exposed product from the protected product mass, allowing easy access while maintaining protection for the bulk product.
Solution Approach 2:
The cutter element acts as an intermediary mechanism between the product and the external environment. It creates a controlled opening that allows the product to be accessed and dispensed while simultaneously maintaining a seal that prevents ambient air and contaminants from reaching the protected product mass. The cutter blade forms a sealing interface that mediates between accessibility and protection requirements.
2Productivity
If the product is repeatedly exposed to ambient air during use, then the product can be applied, but bacterial and fungal growth occurs posing health risks
Solution Approach 1:
The system segments the product into an exposed application portion and a protected storage portion. The cutter creates a defined boundary where only the necessary amount of product is exposed for application, while the remaining product mass stays sealed and protected from contaminants that cause bacterial and fungal growth, maintaining hygiene and safety.
Solution Approach 2:
The cutter element serves as an intermediary barrier that enables product application while preventing contaminant ingress. It creates a controlled interface that allows the exposed product to be accessed for application but simultaneously seals off the protected product mass from environmental contaminants, thereby preventing microbial growth and maintaining product safety.
3Productivity
If the product mass is pushed upwards through the opening, then dispensing is achieved, but the unused portion remains susceptible to spoilage
Solution Approach 1:
The dispensing system segments the product exposure into a minimal necessary portion and a protected bulk portion. The cutter creates a sealed interface that allows efficient dispensing of the exposed product while simultaneously protecting the unused product mass from environmental factors, thereby extending the product's shelf life without compromising dispensing efficiency.
Solution Approach 2:
The cutter element acts as an intermediary sealing mechanism that enables efficient product dispensing while protecting the unused portion. It creates a controlled opening that allows the actuator to push product upward for dispensing, but simultaneously maintains a seal that prevents spoilage of the protected product mass, thereby extending shelf life.
4Object-affected harmful factors
If a protective mechanism is added to shield the product, then product integrity is improved, but the device complexity increases
Solution Approach 1:
The protective function and the dispensing function are merged into a single integrated cutter element. The cutter serves dual purposes: it creates the opening for product access and simultaneously forms a sealing interface that protects the product mass. This merging of functions provides effective product protection without significantly increasing device complexity.
Solution Approach 2:
The cutter element is designed as a multi-functional component that performs both cutting and sealing operations. It creates the dispensing opening while simultaneously acting as a protective seal for the product mass. This universal component provides comprehensive product protection without adding multiple separate protective mechanisms, thereby avoiding excessive complexity.
Data Source
AI summary
A dispensing stick designed for products such as lip balm, lipstick, or glue. The dispensing stick features a cylindrical body with an actuator mechanism at one end and an opening at the other for dispensing the product. Notably, the dispensing stick incorporates a rotatable disc-shaped cutter element, hinged to the cylindrical wall adjacent to the opening. This cutter element, equipped with a curved blade, is coupled to the body via a pin and operates in a plane parallel to the opening. The design allows for a cutting action as the product is pushed through the opening, thereby addressing issues related to product hygiene and longevity.