Cosmetic Container Internal Wall Thickness Variation
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Solution Overview
Problem
Conventional cosmetics containers made through blow molding lack structural strength, necessitating adjustments in exterior shape to enhance durability, which can result in unevenness and aesthetic issues.
Innovation Solution
A cosmetics container design with varying wall thickness and curved surfaces internally, allowing for enhanced structural strength without altering the exterior shape, and featuring a light-permeable material that creates an optical effect when holding cosmetic materials, providing both strength and visual stimulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the wall thickness is increased to enhance structural strength, then the container becomes heavier and more material is consumed, but the exterior shape becomes uneven and aesthetic quality deteriorates
Solution Approach 1:
The patent applies local quality by varying the wall thickness at different locations within the container body. The wall thickness is increased at specific locations (such as the bottom wall and side walls) to enhance structural strength where needed, while maintaining uniform thickness at other locations to preserve aesthetic appearance. This allows the container to have both strength and uniform exterior shape simultaneously.
Solution Approach 2:
The patent resolves the contradiction by moving the thickness variation from the exterior dimension to the interior dimension. The uneven thickness distribution is confined to the internal structure of the container, while the exterior surface maintains a uniform, smooth appearance. This dimensional separation allows strength enhancement without compromising aesthetic quality.
2Strength
If the exterior shape is adjusted to enhance structural strength, then strength is improved, but the design flexibility and aesthetic options are reduced
Solution Approach 1:
The patent enables design flexibility by allowing different exterior shapes to be created without being constrained by structural strength requirements. Since the thickness variation is internal, designers can freely choose various exterior shapes (cylindrical, rectangular, curved, etc.) while the internal thickness distribution provides the necessary structural support for each shape.
Solution Approach 2:
The patent separates the structural function from the aesthetic function by placing thickness variation in the internal dimension. This allows the exterior shape to be optimized for aesthetics and design flexibility, while the internal structure is optimized for structural strength, thereby resolving the contradiction between strength and design flexibility.
3Ease of manufacture
If the wall thickness is uniformly distributed, then manufacturing is simpler, but structural strength is insufficient
Solution Approach 1:
The patent achieves a balance between manufacturing simplicity and structural strength by implementing thickness variation only in specific critical areas (such as the bottom wall and selected side wall portions) rather than throughout the entire container. This localized approach maintains relative manufacturing simplicity while providing enhanced structural strength where it is most needed.
Data Source
AI summary
A cosmetics container having enhanced structural strength regardless of exterior container shape is provided. In the container body of the cosmetic container, the right side wall part and the left side wall part defined by the shape of the inside of the container body are configured to have a thickness in the main body upper portion that is thicker than the thickness in the main body middle portion. Also, the front wall part and the back wall part defined by the shape of the inside of the container body are configured such that in the main body lower portion. Additionally, the portions connecting sideways with the right side wall part and the left side wall part are thinner than in the central portion.