Multi-Layered Thin Film Coating for Impact-Resistant Cosmetic Containers
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Solution Overview
Problem
Conventional multi-layered thin films with metallic layers on cosmetic containers are prone to damage due to brittleness, especially when subjected to drops, which is a result of their inherent fragility.
Innovation Solution
A manufacturing process involving a primer layer on a substrate, followed by a transparent lower coating, an aluminum thin film layer, a flexible intermediate coating, and an upper coating, enhancing impact resistance and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a metallic thin film layer is formed on the substrate to provide aesthetic appearance, then the visual appeal is improved, but the brittleness and susceptibility to damage increase
Solution Approach 1:
The patent applies composite materials by creating a multi-layered thin film structure consisting of a primer layer, transparent lower coating layer, aluminum thin film layer, flexible transparent intermediate coating layer, and upper coating layer. This composite structure combines the aesthetic properties of the metallic aluminum layer with the flexibility and durability of the polymer coating layers, resolving the contradiction between visual appeal and impact resistance.
Solution Approach 2:
The patent employs flexible shells and thin films by introducing a flexible transparent intermediate coating layer between the brittle aluminum thin film layer and the upper coating layer. This flexible layer acts as a buffer that absorbs impact energy and prevents crack propagation, thereby improving impact resistance while maintaining the aesthetic appearance provided by the aluminum layer.
2Reliability
If a multi-layered thin film structure is implemented to improve impact resistance, then the durability is improved, but the manufacturing complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the thin film structure into five distinct functional layers, each with specific properties and purposes. This segmentation allows for optimized performance of each layer while maintaining overall impact resistance. The systematic division into primer, lower coating, metallic film, intermediate coating, and upper coating layers makes the complex structure manageable and manufacturable through sequential deposition processes.
Data Source
AI summary
An embodiment relates to a process for manufacturing a multi-layered thin film and a cosmetic container that includes such a multi-layered thin film. A process for manufacturing a multi-layered thin film may include: forming a primer layer on at least one substrate selected from a group consisting of PET (polyethylene terephthalate), PETG (polyethylene terephthalate glycol), PCTA, and PCTG; forming a transparent lower coating layer on the primer layer; forming an aluminum thin film layer on the lower coating layer; forming a flexible transparent intermediate coating layer on the aluminum thin film layer; and forming an upper coating layer on the intermediate coating layer.