Cosmetic Unit With 3D-Printed Shell and Compatible Tank
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Solution Overview
Problem
The existing methods for manufacturing cosmetic units, such as injection molding and blow molding, are inadequate for producing small batches with quick turnaround and 3D-printing faces challenges with material compatibility and sealing issues, especially when creating units with complex designs on demand.
Innovation Solution
A cosmetic unit design featuring a tank made of cosmetic-compatible material surrounded by a rigid outer shell that allows for standard manufacturing processes and 3D decoration, with a flexible cap for hermetic sealing and an applicator for easy application, enabling quick and cost-effective production of units with complex designs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If 3D-printing is used to manufacture cosmetic units with complex designs on demand, then design variety and production speed are improved, but material compatibility and sealing reliability deteriorate
Solution Approach 1:
The cosmetic unit is divided into separate functional components: a 3D-printed outer shell providing design variety, a separately manufactured tank made of cosmetic-compatible material for reliable sealing, and a cap with applicator. This segmentation allows each component to be optimized independently - the shell for aesthetic customization while the tank ensures product safety and sealing reliability.
Solution Approach 2:
The tank acts as an intermediary component between the 3D-printed shell and the cosmetic product. It provides a reliable, chemically inert barrier that ensures proper sealing and product compatibility, while the outer shell provides the desired aesthetic design. This intermediary solution resolves the conflict between design flexibility and sealing reliability.
2Reliability
If standard injection molding or blow molding is used to manufacture cosmetic units, then manufacturing reliability and material compatibility are improved, but production flexibility and design customization deteriorate
Solution Approach 1:
The manufacturing process is segmented into different stages: the tank is manufactured using reliable standard molding processes ensuring material compatibility and sealing, while the outer shell is 3D-printed to enable rapid design customization. This segmentation allows each manufacturing method to be applied where it provides the greatest advantage.
Solution Approach 2:
Different parts of the cosmetic unit have different quality requirements. The tank requires high material compatibility and sealing quality, achieved through standard molding. The outer shell requires design flexibility and aesthetic quality, achieved through 3D-printing. This local quality approach optimizes each component for its specific requirements.
3Shape
If a single integrated component is manufactured using 3D-printing to achieve design freedom, then design complexity and customization are improved, but material safety and sealing tightness deteriorate
Solution Approach 1:
The cosmetic unit is segmented into components with different material properties: the outer shell can use various 3D-printable materials for design freedom, while the tank uses specifically selected cosmetic-compatible materials that prevent contamination and ensure safety. This segmentation eliminates the need to compromise material safety for design freedom.
Solution Approach 2:
The tank serves as an intermediary barrier between the cosmetic product and the environment, made from materials specifically chosen for their safety and compatibility with cosmetics. It provides a reliable seal and prevents contamination, while the outer shell provides design freedom without directly contacting the product.
Data Source
AI summary
Cosmetic unit (1) comprising a container (2) filled with a flowable cosmetic that can be removed through an access opening of the container (2), and a cap (3) for closing the access opening of the container (2), whereas the cap (3) carries an applicator (17), wherein the container (2) is formed by a tank (12) made of cosmetic compatible material and a rigid outer shell surrounding at least the tank (12).